CN108260080B - Positioning method, device and system - Google Patents

Abstract

The embodiment of the invention provides a positioning method applied to a positioning system consisting of a positioning label and a positioning base station group, wherein the positioning base station group comprises at least two positioning base stations, and the method comprises the following steps: the positioning label periodically sends a positioning label broadcast message to the positioning base station group, the positioning label determines whether the positioning label leaves the positioning area of the positioning base station group according to a positioning label broadcast response message returned from the positioning base station group, and if the positioning label determines that the positioning label leaves the positioning area of the positioning base station group, the positioning label closes the positioning service function except the field-off judging function on the positioning label, so that the power consumption of the positioning label can be saved, and the power supply in the positioning label can continuously serve for a longer time.

Description

A positioning method, device and system

technical field

The present invention relates to the field of communication technologies, and in particular, to a positioning method, device and system.

Background technique

An indoor positioning system or a specific scene positioning system usually consists of a positioning tag, a positioning base station and a positioning server. The positioning tag periodically sends Bluetooth broadcast messages to the positioning base station. After the positioning base station receives the Bluetooth broadcast message of the positioning tag, it extracts the data and reports it to the positioning server through the network (for example, Wifi, ZigBee, 4G and other network communication can be used) (for example, it can include terminal devices such as PC, mobile phone, IPad, and notebook) After receiving the data sent by the positioning base station, the positioning server obtains the position information of the positioning tag through calculation, and processes various positioning services according to specific applications, such as displaying it on a designated map. During the research process, the inventor found that, regardless of whether the existing positioning tag leaves the positioning area, various positioning service functions on it continue to work, which will cause the positioning tag to continue to consume power and cannot effectively save power consumption.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a positioning method, device, system, and storage medium, which can save power consumption of a positioning device or a positioning tag. The embodiments of the present application also provide a positioning base station and a positioning system, which can save the power consumption of the positioning device or the positioning label and the positioning base station.

In one aspect, an embodiment of the present invention provides a positioning method applied to a positioning system composed of a positioning tag and a positioning base station group, where the positioning base station group includes at least two positioning base stations, and the method includes: The positioning base station group sends a positioning label broadcast message, and the positioning label determines whether it leaves the positioning area of the positioning base station group according to the positioning label broadcast response message returned from the positioning base station group. If it has left the positioning area of the positioning base station group, the positioning tag closes its own positioning service functions except for the departure judgment function.

By adding the departure judgment function of the positioning tag, and after judging that the positioning tag has left the positioning area of the positioning base station group, the other positioning service functions except the departure judgment on the positioning tag are turned off, so that the positioning tag can be saved. The power consumption of the positioning tag enables the power supply in the positioning tag to continue to serve for a longer time.

In a possible design, determining whether the positioning tag leaves the positioning area of the positioning base station group specifically includes: the positioning tag listening to the positioning base station on the same channel as sending the positioning tag broadcast message The positioning tag broadcast response message returned by the positioning base station in the group; if the positioning tag does not receive the positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, then It is determined that the positioning tag has left the positioning area of the positioning base station group.

In a possible design, the determining, by the positioning tag, whether the positioning tag leaves the positioning area of the positioning base station group specifically includes: the positioning tag listening to the location tag on the same channel as sending the positioning tag broadcast message. The positioning tag broadcast response message returned by the positioning base station in the positioning base station group; the positioning tag receives the positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, so The positioning tag broadcast response message includes the Bluetooth address of the at least one positioning base station; the positioning tag determines whether the Bluetooth address of the at least one positioning base station is regular, and if not, the count value is increased by 1, And when the count value does not reach the set threshold, continue to perform the above steps; when the count value reaches the set threshold, it is determined that the positioning tag has left the positioning area of the positioning base station group.

By judging whether the Bluetooth address returned by the positioning base station is a response message returned by a base station in the base station group, it can prevent the wrong judgment problem caused by the positioning tag broadcast response message that is not responded to by the Bluetooth of the base station, thereby improving the Accurate determination of positioning tag positioning; in addition, by setting a certain count value as a judgment reference, so as to avoid frequent departure and presence results, and frequently close and open the positioning service function on the positioning tag according to the positioning judgment results. .

In a possible design, the method further includes: if the positioning tag determines that the Bluetooth address of the at least one positioning base station is regular, then the positioning tag determines that it is in the positioning area of the positioning base station group, The count value is cleared to zero, and the location service function disabled on the location label is enabled.

In a possible design, the positioning tag determines whether the Bluetooth address of the at least one positioning base station is regular in one of the following ways: the Bluetooth address values of multiple positioning base stations in the positioning area are the same; the positioning The Bluetooth address values of the multiple positioning base stations in the area are incremented according to a specified step size; and the Bluetooth address values of the multiple positioning base stations in the positioning area are calculated according to a specific algorithm formula.

In a possible design, the positioning service function on the positioning tag other than the departure judgment function includes at least one of the following functions: a function of collecting positioning data, a function of calculating positioning data, and a function of sending positioning data.

In a possible design, the positioning tag broadcast message and the positioning tag broadcast response message use a special departure protocol, which is modified by modifying the scannable broadcast packet protocol and the linkable undirected broadcast protocol. Or the unlinkable broadcast protocol gets.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and can save power consumption by using the special departure protocol compared with the positioning tag based on the existing Bluetooth broadcast message protocol. Effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

By deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the communication between the positioning tag and the positioning base station for departure judgment is enabled. It is more flexible, has less overhead, and can save more power.

On the other hand, an embodiment of the present invention provides a positioning method applied to a positioning system composed of a positioning tag and a positioning base station group, where the positioning base station group includes at least two positioning base stations, and the method includes: in the base station group Any of the positioning base stations receives the first positioning label broadcast message periodically sent by the positioning label, the first positioning label broadcast message carries label information and address information of the positioning label, and the label information indicates the first positioning label. The broadcast message is a special departure protocol message; the positioning base station records the address information of the positioning tag; the positioning base station determines that the positioning tag is located in the positioning area of the base station according to the marking information, and sends a message to the positioning base station. The location label returns the location label broadcast response message.

Compared with the prior art, the positioning base station makes a judgment according to the existing Bluetooth broadcast protocol message, and the positioning base station makes a positioning judgment according to the special departure protocol message in the special departure protocol, which can make the departure judgment of the positioning base station more flexible. (Not limited to be sent together with positioning data), and due to the use of a special departure protocol message, the sending frequency is more flexible and is usually lower than the frequency of sending data in existing protocols, thereby saving the power consumption of the positioning base station. Because the existing existing Bluetooth broadcast protocol messages (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol) have certain limitations (for example, all require It is bound together with the sending positioning data) and the high sending and receiving frequency increases the power consumption of the positioning base station for positioning judgment.

In a possible design, the method further includes: if the positioning base station does not receive a second positioning tag broadcast message carrying the address information of the positioning tag within a set time, the positioning base station It is determined that the positioning tag leaves the positioning area of the positioning base station.

In a possible design, the method further includes: if the positioning base station receives a second positioning tag broadcast message carrying the address information of the positioning tag within a set time, determining the second positioning tag Whether the tag information in the positioning tag broadcast message is equal to the set value, the tag information in the second positioning tag broadcast message is used to indicate whether the second positioning tag broadcast message is a special departure protocol message; if If the tag information in the second positioning tag broadcast message is equal to the set value, it is determined that the positioning tag is in the positioning area of the positioning base station, and a positioning tag broadcast response message is returned to the positioning tag; if the If the tag information in the broadcast message of the second positioning tag is not equal to the set value, the count value is incremented by 1, and when the count value reaches the set threshold, it is determined that the positioning tag has left the positioning base station location area.

By setting a certain count value as a judgment reference, frequent occurrence of departure and presence results is avoided, and the positioning service function on the positioning label is frequently closed and opened according to the positioning judgment result. In addition, by judging whether the marking information in the second positioning tag broadcast message sent by the positioning tag is equal to the set value, the problem of judgment error caused by the Bluetooth message of the non-positioning tag can be prevented, thereby improving the accuracy of the positioning tag positioning judgment. It can also prevent the positioning judgment based on the non-specific departure protocol message of the positioning tag, so that the positioning judgment is only performed according to the special departure protocol message sent by the positioning tag, thereby saving the power consumption of the positioning base station positioning judgment.

In a possible design, the special departure protocol used in the location tag broadcast message and the location tag broadcast response message is modified by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol, or the unlinkable broadcast protocol. get.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and function-saving by using the special departure protocol compared to the positioning tag based on the existing Bluetooth broadcast message protocol. consumption effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

By deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the communication between the positioning tag and the positioning base station for departure judgment is enabled. It is more flexible, has less overhead, and can save more power.

In another aspect, an embodiment of the present application provides a positioning device, which is applied to a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, where the positioning device includes:

a transceiver unit, configured to periodically send positioning equipment broadcast messages to the positioning base station group;

A processing unit, configured to determine whether the positioning device leaves the positioning area of the positioning base station group through the positioning label broadcast response message returned by the positioning base station group, and when the positioning device leaves the positioning area of the positioning base station group In the case of , the positioning service functions except the departure judgment function on the positioning device are turned off.

By adding the departure judgment or positioning judgment function of the positioning tag, and after judging that the positioning tag has left the positioning area of the positioning base station group, the other positioning service functions except the departure judgment on the positioning tag are turned off, so that it is possible to The power consumption of the positioning tag is saved, so that the power supply in the positioning tag can continue to serve for a longer time.

In a possible design, the processing unit judging whether to leave the positioning area of the positioning base station group specifically includes: the processing unit monitors the positioning base station group on the same channel as sending the positioning label broadcast message The positioning label broadcast response message returned by the positioning base station in the It is determined that the positioning device has left the positioning area of the positioning base station group.

In a possible design, the processing unit judging whether to leave the positioning area of the positioning base station group specifically includes: the processing unit monitors the positioning base station group on the same channel as sending the positioning label broadcast message The positioning tag broadcast response message returned by the positioning base station in the The broadcast response message includes the Bluetooth address of the at least one positioning base station; the processing unit determines whether the Bluetooth address of the at least one positioning base station is regular, and if it is not regular, the count value is incremented by 1, and the When the count value does not reach the set threshold, continue to perform the above steps; when the count value reaches the set threshold, it is determined that the positioning device has left the positioning area of the positioning base station group.

By judging whether the Bluetooth address returned by the positioning base station is a response message returned by a base station in the base station group, it can prevent the wrong judgment problem caused by the positioning tag broadcast response message that is not responded to by the Bluetooth of the base station, thereby improving the Accurate determination of positioning tag positioning; in addition, by setting a certain count value as a judgment reference, so as to avoid frequent departure and presence results, and frequently close and open the positioning service function on the positioning tag according to the positioning judgment results. .

In a possible design, the processing unit is further configured to, if the positioning tag determines that the Bluetooth address of the at least one positioning base station is regular, the positioning tag determines that it is in the positioning area of the positioning base station group , clear the count value to zero, and enable the location service function disabled on the location label.

In a possible design, the processing unit determines whether the Bluetooth address of the at least one positioning base station is regular in one of the following ways: the Bluetooth address values of multiple positioning base stations in the positioning area are the same; the positioning The Bluetooth address values of the multiple positioning base stations in the area are incremented according to a specified step size; and the Bluetooth address values of the multiple positioning base stations in the positioning area are calculated according to a specific algorithm formula.

In a possible design, the positioning service function on the positioning tag other than the departure judgment function includes at least one of the following functions: a function of collecting positioning data, a function of calculating positioning data, and a function of sending positioning data.

In a possible design, the positioning tag broadcast message and the positioning tag broadcast response message use a special departure protocol, which is modified by modifying the scannable broadcast packet protocol and the linkable undirected broadcast protocol. Or the unlinkable broadcast protocol gets.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and function-saving by using the special departure protocol compared to the positioning tag based on the existing Bluetooth broadcast message protocol. consumption effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

By deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the communication between the positioning tag and the positioning base station for departure judgment is enabled. It is more flexible, has less overhead, and can save more power.

On the other hand, an embodiment of the present application provides a positioning base station, which is applied to a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning base station is any one of the positioning base stations in the positioning base station group. A positioning base station, the base station includes: a transceiver unit configured to receive a first positioning label broadcast message periodically sent by the positioning device, where the first positioning label broadcast message carries label information and the address of the positioning device information, the marking information indicates that the first positioning label broadcast message is a special departure protocol message; a processing unit, used for the positioning base station to record the address information of the positioning device, and the positioning base station records the address information of the positioning device according to the marking The information determines that the positioning device is in the positioning area of the base station, and instructs the transceiver unit to return a positioning tag broadcast response message to the positioning device.

Compared with the prior art, the positioning base station makes a judgment according to the existing Bluetooth broadcast protocol message, and the positioning base station makes a positioning judgment according to the special departure protocol message in the special departure protocol, which can make the departure judgment of the positioning base station more flexible. (Not limited to be sent together with positioning data), and due to the use of a special departure protocol message, the sending frequency is more flexible and is usually lower than the frequency of sending data in existing protocols, thereby saving the power consumption of the positioning base station. Because the existing existing Bluetooth broadcast protocol messages (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol) have certain limitations (for example, all require It is bound together with the sending positioning data) and the high sending and receiving frequency increases the power consumption of the positioning base station for positioning judgment.

In a possible design, the processing unit is further configured to determine that the processing unit does not receive a second positioning tag broadcast message carrying the address information of the positioning device within a set time. The positioning device leaves the positioning area of the positioning base station.

In a possible design, the processing unit is further configured to: determine the Whether the tag information in the second positioning tag broadcast packet is equal to the set value, the tag information in the second positioning tag broadcast packet is used to indicate whether the second positioning tag broadcast packet is a special departure protocol packet ; If the marking information in the second positioning label broadcast message is equal to the set value, then determine that the positioning device is in the positioning area of the positioning base station, and return the positioning label broadcast response message to the positioning device; If If the flag information in the broadcast message of the second positioning label is not equal to the set value, then the count value is increased by 1, and when the count value reaches the set threshold value, it is determined that the positioning device has left the Locate the location area of the base station.

By setting a certain count value as a judgment reference, frequent occurrence of departure and presence results is avoided, and the positioning service function on the positioning label is frequently closed and opened according to the positioning judgment result. In addition, by judging whether the marking information in the second positioning tag broadcast message sent by the positioning tag is equal to the set value, the problem of judgment error caused by the Bluetooth message of the non-positioning tag can be prevented, thereby improving the accuracy of the positioning tag positioning judgment. It can also prevent the positioning judgment based on the non-specific departure protocol message of the positioning tag, so that the positioning judgment is only performed according to the special departure protocol message sent by the positioning tag, thereby saving the power consumption of the positioning base station positioning judgment.

In a possible design, the special departure protocol used in the location tag broadcast message and the location tag broadcast response message is modified by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol, or the unlinkable broadcast protocol. get.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and function-saving by using the special departure protocol compared to the positioning tag based on the existing Bluetooth broadcast message protocol. consumption effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

Moreover, by deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the difference between the positioning tag and the positioning base station for departure judgment is made. The communication is more flexible, the overhead is small, and the effect of saving power consumption is better.

On the other hand, an embodiment of the present application provides a positioning device, which is applied to a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations. The positioning device includes: a transceiver for periodically sending The positioning base station group sends a positioning label broadcast message; the processor is configured to determine whether the positioning device leaves the positioning of the positioning base station group through a positioning label broadcast response message returned by at least one positioning base station in the positioning base station group area, and when the positioning device leaves the positioning area of the positioning base station group, disable the positioning service functions on the positioning device except for the departure judgment function.

By adding the departure judgment or positioning judgment function of the positioning tag, and after judging that the positioning tag has left the positioning area of the positioning base station group, the other positioning service functions except the departure judgment on the positioning tag are turned off, so that it is possible to The power consumption of the positioning tag is saved, so that the power supply in the positioning tag can continue to serve for a longer time.

In a possible design, the processor judging whether to leave the positioning area of the positioning base station group specifically includes: the processor listening to the positioning base station group on the same channel as sending the positioning label broadcast message The positioning label broadcast response message returned by the positioning base station in the It is determined that the positioning device has left the positioning area of the positioning base station group.

In a possible design, the processor judging whether to leave the positioning area of the positioning base station group specifically includes: the processor listening to the positioning base station group on the same channel as sending the positioning label broadcast message The positioning tag broadcast response message returned by the positioning base station in the The broadcast response message includes the Bluetooth address of the at least one positioning base station; the processor determines whether the Bluetooth address of the at least one positioning base station is regular, and if it is not regular, the count value is increased by 1, and the When the count value does not reach the set threshold, continue to perform the above steps; when the count value reaches the set threshold, it is determined that the positioning device has left the positioning area of the positioning base station group.

By judging whether the Bluetooth address returned by the positioning base station is a response message returned by a base station in the base station group, it can prevent the wrong judgment problem caused by the positioning tag broadcast response message that is not responded to by the Bluetooth of the base station, thereby improving the Accurate determination of positioning tag positioning; in addition, by setting a certain count value as a judgment reference, so as to avoid frequent departure and presence results, and frequently close and open the positioning service function on the positioning tag according to the positioning judgment results. .

In a possible design, the processor is further configured to, if the positioning tag determines that the Bluetooth address of the at least one positioning base station has regularity, the positioning tag determines that it is in the positioning area of the positioning base station group , clear the count value to zero, and enable the location service function disabled on the location label.

In a possible design, the processor determines whether the Bluetooth address of the at least one positioning base station is regular in one of the following ways: the Bluetooth address values of multiple positioning base stations in the positioning area are the same; the positioning The Bluetooth address values of the multiple positioning base stations in the area are incremented according to a specified step size; and the Bluetooth address values of the multiple positioning base stations in the positioning area are calculated according to a specific algorithm formula.

In a possible design, the positioning service function on the positioning tag other than the departure judgment function includes at least one of the following functions: a function of collecting positioning data, a function of calculating positioning data, and a function of sending positioning data.

In a possible design, the positioning tag broadcast message and the positioning tag broadcast response message use a special departure protocol, which is modified by modifying the scannable broadcast packet protocol and the linkable undirected broadcast protocol. Or the unlinkable broadcast protocol gets.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and function-saving by using the special departure protocol compared to the positioning tag based on the existing Bluetooth broadcast message protocol. consumption effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

By deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the communication between the positioning tag and the positioning base station for departure judgment is enabled. It is more flexible, has less overhead, and can save more power.

On the other hand, an embodiment of the present application provides a positioning base station, which is applied to a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning base station is any one of the positioning base stations in the positioning base station group. A positioning base station, the base station includes: a transceiver for receiving a first positioning label broadcast message periodically sent by the positioning device, where the first positioning label broadcast message carries label information and the address of the positioning device information, the marking information indicates that the first positioning label broadcast message is a special departure protocol message; the processor is used for the positioning base station to record the address information of the positioning device, and the positioning base station records the address information of the positioning device according to the marking The information determines that the positioning device is in the positioning area of the base station, and instructs the transceiver to return a positioning tag broadcast response message to the positioning device.

Compared with the prior art, the positioning base station makes a judgment according to the existing Bluetooth broadcast protocol message, and the positioning base station makes a positioning judgment according to the special departure protocol message in the special departure protocol, which can make the departure judgment of the positioning base station more flexible. (Not limited to be sent together with positioning data), and due to the use of a special departure protocol message, the sending frequency is more flexible and is usually lower than the frequency of sending data in existing protocols, thereby saving the power consumption of the positioning base station. Because the existing existing Bluetooth broadcast protocol messages (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol) have certain limitations (for example, all require It is bound together with the sending positioning data) and the high sending and receiving frequency increases the power consumption of the positioning base station for positioning judgment.

In a possible design, the processor is further configured to, if the transceiver does not receive a second positioning tag broadcast message carrying the address information of the positioning device within a set time, determine the The positioning device leaves the positioning area of the positioning base station.

In a possible design, the processing unit is further configured to: if the transceiver receives a second positioning tag broadcast message carrying the address information of the positioning device within a set time, determine the Whether the tag information in the second positioning tag broadcast packet is equal to the set value, the tag information in the second positioning tag broadcast packet is used to indicate whether the second positioning tag broadcast packet is a special departure protocol packet ; If the marking information in the second positioning label broadcast message is equal to the set value, then determine that the positioning device is in the positioning area of the positioning base station, and return the positioning label broadcast response message to the positioning device; If If the flag information in the broadcast message of the second positioning label is not equal to the set value, then the count value is increased by 1, and when the count value reaches the set threshold value, it is determined that the positioning device has left the Locate the location area of the base station.

By setting a certain count value as a judgment reference, frequent occurrence of departure and presence results is avoided, and the positioning service function on the positioning label is frequently closed and opened according to the positioning judgment result. In addition, by judging whether the marking information in the second positioning tag broadcast message sent by the positioning tag is equal to the set value, the problem of judgment error caused by the Bluetooth message of the non-positioning tag can be prevented, thereby improving the accuracy of the positioning tag positioning judgment. It can also prevent the positioning judgment based on the non-specific departure protocol message of the positioning tag, so that the positioning judgment is only performed according to the special departure protocol message sent by the positioning tag, thereby saving the power consumption of the positioning base station positioning judgment.

In a possible design, the special departure protocol used in the location tag broadcast message and the location tag broadcast response message is modified by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol, or the unlinkable broadcast protocol. get.

In a possible design, the location tag broadcast message in the special departure protocol obtained by modifying the scannable broadcast message protocol, the linkable undirected broadcast protocol or the unlinkable broadcast protocol does not include the Data field.

The positioning tag broadcast message and the positioning tag broadcast response message are more flexible and function-saving by using the special departure protocol compared to the positioning tag based on the existing Bluetooth broadcast message protocol. consumption effect. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

In addition, because the existing Bluetooth broadcast message protocol has the advantages of easy implementation, high security, good real-time performance, and high efficiency, by modifying the existing Bluetooth broadcast message protocol (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol), which can maintain the advantages of easy implementation, high security, good real-time performance and high efficiency of the existing Bluetooth broadcast message protocol. On the basis of the Bluetooth broadcast message protocol, and because the two parties interact on the broadcast channel, the Bluetooth broadcast message protocol has the characteristics of low power consumption.

Moreover, by deleting the Data field in the positioning tag broadcast message sent according to the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol, the difference between the positioning tag and the positioning base station for departure judgment is made. The communication is more flexible, the overhead is small, and the effect of saving power consumption is better.

In another aspect, an embodiment of the present application provides a positioning system, where the positioning system includes various possible design methods in the above-mentioned positioning device and various possible design methods in the above-mentioned positioning base station.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a program code is stored in the computer storage medium, and the program code is used to instruct to execute a method in various possible design manners in the above-mentioned positioning device.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where program codes are stored in the computer storage medium, and the program codes are used to instruct to execute the methods in various possible design manners in the above positioning base station.

Description of drawings

1 is a schematic diagram of a positioning system networking architecture according to an embodiment of the present invention;

2 is a schematic diagram of the presence state of a positioning tag provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a flow chart of a positioning label positioning judgment provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a positioning determination flow of a positioning base station according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a positioning determination flow of a positioning system according to an embodiment of the present invention;

6 is a schematic diagram of a method for obtaining a special departure protocol provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of a method for obtaining another special departure protocol provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of a method for obtaining still another special departure protocol provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a positioning device according to an embodiment of the present invention;

10 is a schematic structural diagram of a positioning base station according to an embodiment of the present invention;

11 is a schematic structural diagram of a positioning device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a positioning system according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The network architecture and service scenarios described in the embodiments of the present invention are for the purpose of illustrating the technical solutions of the embodiments of the present invention more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems.

1 is a schematic diagram of the architecture of a positioning system provided by an embodiment of the present invention. The positioning system includes a positioning tag (also referred to as a positioning device), a positioning base station, and a positioning server. (English: Bluetooth Low Energy) uses the Bluetooth broadcast protocol for communication, wherein the Bluetooth broadcast protocol packets include the unlinkable broadcast protocol, the linkable undirected broadcast protocol, the linkable directional broadcast protocol, and the scannable broadcast protocol. The positioning tag periodically sends Bluetooth broadcast protocol packets (such as unlinkable broadcast packets) to the positioning base station. After the positioning base station receives the Bluetooth broadcast protocol packets of the positioning tag, it extracts the data and packages it with RSSI (English: Received SignalStrength Indication). After the positioning server receives the data sent by the positioning base station, it calculates the position information of the positioning tag and displays it on the designated map, thereby The location of the location label is located, or the location server obtains the location information of the location label through calculation and performs other processing according to a specific application. It should be noted that the positioning label and the positioning label in the embodiments of the present application can be used interchangeably, which refers to a positioning device that is placed on the object to be positioned (including human clothes, safety helmets, mobile phones and other equipment) or exists independently , and other types of positioning devices that can communicate with the positioning base station via Bluetooth.

2 , a positioning system provided by an embodiment of the present invention includes a positioning base station group composed of multiple positioning base stations, and the positioning areas of all positioning base stations in the positioning base station group constitute the positioning area of the positioning base station group. Figure 2 shows three scenarios of location tag presence, departure and arrival (a special case of presence). Among them, for the judgment on the side of the positioning tag, presence means that the positioning tag is within the positioning area of the positioning base station group, that is, as long as it is in the positioning area of any positioning base station in the positioning base station group; The positioning area of the positioning base station; the entry indicates the process of the positioning tag entering the positioning area of the positioning base station; for the judgment of a specific positioning base station, the presence indicates that the positioning tag is in the positioning area of the specific positioning base station. The field identifier indicates the state in which the positioning tag leaves the positioning area of the specific positioning base station, and the field identification indicates the state in which the positioning tag enters the positioning area of the specific positioning base station.

In the prior art, regardless of whether the positioning tag is in the positioning area of the positioning base station group, various positioning service functions on the positioning tag continue to work as usual, which will result in continuous power consumption and cannot effectively save power consumption. Moreover, most of the existing positioning tags are generally powered by button batteries. The capacity of the button batteries is limited. If the power consumption of the positioning tags is not limited, the life cycle of the button batteries is short, and then the battery needs to be charged or replaced, which is very costly.

In order to save the power consumption of the point tag, so that the power supply in the positioning tag can continue to serve for a longer time, an embodiment of the present application proposes a positioning method, as shown in FIG. 3 , the method includes the following parts:

302: The positioning tag periodically sends a positioning tag broadcast message to the positioning base station group.

In a specific implementation manner, the positioning tag periodically sends a positioning tag broadcast message to the positioning base station group by using a special departure protocol, for example, according to a certain period, and the sending frequency may be lower than the existing Bluetooth broadcast message protocol, Therefore, the power consumption of the positioning tag can be further reduced. Of course, the sending frequency can also be adjusted according to actual needs. In a specific implementation manner, the special departure protocol can be obtained by modifying an existing Bluetooth broadcast message protocol (such as an unlinkable broadcast protocol, a linkable undirected broadcast protocol, a linkable directed broadcast protocol, or a scannable broadcast protocol), which The characteristics are basically the same as the existing Bluetooth broadcast message protocol, so it also has the advantages of easy implementation, high security, good real-time performance, and high efficiency, and because this Bluetooth broadcast message protocol interacts on the broadcast channel, it has the advantages of low power consumption. It should be noted that the special departure protocol obtained by modifying the existing Bluetooth broadcast message protocol is mainly used for the departure judgment of the positioning tag, and other data communications between the positioning tag and the positioning base station still use the existing Bluetooth broadcast message protocol. . It can be understood that other protocols may also be adopted for the special departure protocol, which is not particularly limited in the present invention. The following descriptions are given by taking as an example that the special departure protocol is obtained by modifying the existing scannable broadcast message protocol, linkable undirected broadcast protocol or unlinkable broadcast protocol. It should be noted that the departure judgment used here includes the positioning judgment of any state in the above three scenarios (for example, including the judgment of presence and entry), not just the judgment of leaving the positioning base station group or the positioning base station.

Method 1: Obtain a special departure protocol by modifying the scannable broadcast message protocol. Referring specifically to FIG. 6 , according to the provisions of the Bluetooth standard, the existing scannable broadcast message protocol is mainly used for sending data, and the application scenario is mainly that the data length is greater than 31 bytes and not greater than 62 bytes. The existing scannable broadcast message protocol includes 3 messages: SCAN_IND message, SCAN_REQ message and SCAN_REP message, where the SCAN_IND message is sent by the broadcaster (positioning label) to the scanner (positioning base station), SCAN_REQ The message is the message that the scanner responds to the broadcaster, and the SCAN_REP message is the scan response message that the broadcaster sends to the scanner after receiving the response message from the scanner.

The modification method is as follows:

(1) Delete the scan response message SCAN_RSP;

(2) Modify the field configuration in the SCAN_IND message: delete the Data field, and modify the meaning of the value in the Flag field. The Flag field occupies 1 byte and carries flag information. The value of the flag information, for example, can be configured as 0x81, indicating that the The message is a special departure protocol message, so the positioning base station determines whether the message is a departure protocol message according to this value;

(3) The ScanA field in the SCAN_REQ message represents the Bluetooth address of the positioning base station (consistent with the existing scannable broadcast message protocol). This value may vary, but it should be regular (for example, the same value, Synchronization length increases, conforms to specific algorithm formula, etc.), so that the positioning tag can judge whether the SCAN_REQ message is a message sent by the positioning base station in the positioning area according to this value, so as to prevent the non-base station Bluetooth from responding to the influence of the SCAN_REQ message.

The special departure protocol formed by modifying the existing scannable broadcast message protocol includes SCAN_IND message and SCAN_REQ message. The positioning tag periodically sends a positioning tag broadcast message to the positioning base station group by using the SCAN_IND message.

The existing scannable broadcast protocol interacts on the broadcast channel and has the characteristics of low power consumption, and the modified special departure protocol also has the characteristics of low power consumption, and does not require the sending of SCAN_RSP messages, which further reduces the power consumption. Bluetooth transmits power consumption, which has the further advantage of low power consumption.

Method 2: Obtain a special exit protocol by modifying the existing linkable undirected broadcast protocol. Referring specifically to FIG. 7 , according to the provisions of the Bluetooth standard, the existing linkable undirected broadcast protocol includes an ADV_IND message, where the ADV_IND is sent by the broadcaster (location tag) to the scanner (location base station).

The modification method is as follows:

(1) Increase the ADV_IND message sent by the scanner to the broadcaster. For the sake of distinction, the ADV_IND message sent by the broadcaster (positioning tag) to the scanner (positioning base station) is identified as the ADV_IND(1) message, and the scanner The ADV_IND message sent by the (positioning base station) to the broadcaster (positioning tag) is identified as an ADV_IND(2) message.

(2) Modify the field configuration in the ADV_IND(1) message: delete the Data field and modify the meaning of the value in the Flag field. The Flag field occupies 1 byte and carries flag information. The value of the flag information can be configured as 0x81, for example. , indicating that the packet is a special departure protocol packet, so that the positioning base station determines whether the packet is a departure protocol packet according to this value.

(3) Modify the field configuration in the ADV_IND(2) message: the ADvA(6byte) field in the original ADV_IND message is correspondingly represented as ScanA(6byte), which represents the Bluetooth address of the positioning base station (and the existing scannable broadcast). The message protocol is consistent), this value can have a certain change, but it should have regularity (for example, the same value, the synchronization length increases, conform to the characteristics of a specific algorithm formula, etc.), so that the positioning tag can judge whether the SCAN_REQ message is based on this value. The message sent by the base station is located in the positioning area, so as to prevent the influence of the non-base station Bluetooth response to the SCAN_REQ message. The Flag field in ADV_IND(2) represents the departure response flag, and the value is the Flag value in the ADV_IND(1) field plus 1, so that the broadcaster who receives the response message knows that the message is in response to the ADV_IND sent by it. (1) Message.

The special departure protocol formed by modifying the existing linkable undirected broadcast protocol includes ADV_IND(1) message and ADV_IND(2) message. The positioning tag periodically sends a positioning tag broadcast message to the positioning base station group by using the ADV_IND(1) message.

Method 3: Obtain a special exit protocol by modifying the existing unlinkable broadcast protocol. Referring to FIG. 8 , according to the provisions of the Bluetooth standard, the original unlinkable broadcast protocol includes an ADV_NOCONN_IND message, the ADV_NOCONN_IND is sent by the broadcaster (location tag) to the scanner (location base station).

The modification method is as follows:

(1) Add the ADV_NOCONN_IND message sent by the scanner to the broadcaster. For the sake of distinction, the ADV_NOCONN_IND message sent by the broadcaster (positioning tag) to the scanner (positioning base station) is identified as the ADV_NOCONN_IND(1) message, and the scanner The ADV_NOCONN_IND message sent by the (positioning base station) to the broadcaster (positioning tag) is identified as an ADV_NOCONN_IND(2) message.

(2) Modify the field configuration in the ADV_NOCONN_IND(1) message: delete the Data field and modify the meaning of the value in the Flag field. The Flag field occupies 1 byte and carries flag information. The value of the flag information can be configured as 0x81, for example. , indicating that the packet is a special departure protocol packet, so that the positioning base station determines whether the packet is a departure protocol packet according to this value.

(3) Modify the field configuration in the ADV_NOCONN_IND(2) message: the ADvA(6byte) field in the original ADV_NOCONN_IND message is correspondingly represented as ScanA(6byte), which represents the Bluetooth address of the positioning base station (and the existing scannable broadcast). The message protocol is consistent), this value can have a certain change, but it should have regularity (for example, the same value, the synchronization length increases, conform to the characteristics of a specific algorithm formula, etc.), so that the positioning tag can judge whether the SCAN_REQ message is based on this value. The message sent by the base station is located in the positioning area, so as to prevent the influence of the non-base station Bluetooth response to the SCAN_REQ message. The Flag field in ADV_NOCONN_IND(2) represents the departure response flag, and the value is the Flag value in the ADV_NOCONN_IND(1) field plus 1, so that the broadcaster who receives the response message knows that the message is in response to the ADV_NOCONN_IND sent by it. (1) Message.

The special departure protocol formed by modifying the existing linkable undirected broadcast protocol includes the ADV_NOCONN_IND(1) message and the ADV_NOCONN_IND(2) message. The positioning label periodically sends a positioning label broadcast message to the positioning base station group by using the ADV_NOCONN_IND(1) message.

It should be noted that, in another embodiment, the positioning tag can also use the existing Bluetooth broadcast message protocol to send the positioning tag broadcast message and receive the returned positioning tag broadcast response message, and broadcast the response according to the positioning tag. The Bluetooth address of the positioning base station carried in the message determines whether the positioning tag leaves the positioning area of the positioning base station group. For the specific determination steps in this manner, reference may be made to the descriptions in this embodiment and the embodiment in FIG. 5 . Compared with the prior art, the positioning tag in this embodiment can perform departure judgment, and after judging whether the positioning tag leaves the positioning area of the positioning base station group, close the positioning tags except for the departure judgment. Other positioning business functions, so that the power consumption of the point tag can be saved, so that the power supply in the positioning tag can continue to serve for a longer time.

The positioning tag performs positioning judgment according to the special departure protocol message in the special departure protocol (for example, the above SCAN_IND message DV_IND(1) message or ADV_NOCONN_IND(1)), relative to the positioning tag according to the existing Bluetooth broadcast message protocol In terms of judgment, it has the effect of being more flexible and saving power consumption in comparison. Because the transmission phase of the existing Bluetooth broadcast message protocol message has certain restrictions (for example, it needs to be bound with the sending positioning data) and the transmission and reception frequency is high, which increases the power consumption of the positioning base station. On-site protocol messages are more flexible for departure judgment (not limited to being sent together with positioning data), and due to the use of special off-site protocol messages, the sending frequency is more flexible and is usually lower than the frequency of data sent by existing protocols, so it can be more Save the power consumption of the positioning base station.

304: The positioning tag determines whether the positioning tag leaves the positioning area of the positioning base station group through a positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group.

In a specific embodiment, the positioning tag listens to the positioning tag broadcast response message returned by the positioning base station in the positioning base station group on the same channel as the positioning tag broadcast message is sent; The positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group and the positioning base station Bluetooth address information carried in the positioning tag broadcast response message determine whether the positioning tag has left the positioning area of the positioning base station group. For the specific process of judging departure or presence, refer to the positioning judgment on the positioning label side in Figure 7 below, which will not be described in detail here.

306: In the case that the positioning tag leaves the positioning area of the positioning base station group, disable the positioning service functions on the positioning tag except for the departure judgment function.

After the positioning tag leaves the field, all positioning service functions except the departure judgment function (including regularly sending positioning tag broadcast messages and receiving positioning tag broadcast response messages, counting, field judgment, etc.) , gyroscope chips but not limited to such chips) enter the sleep state. The positioning service functions include positioning service functions such as stopping sending positioning data (for example, sending Bluetooth unlinkable broadcast messages), stopping positioning data collection, and positioning data calculation.

Referring to FIG. 4, another positioning method provided by this embodiment of the present application includes the following parts:

402: Receive a first location label broadcast message periodically sent by a location label, the first location label broadcast message carries label information and address information of the location label, and the label information indicates that the first location label broadcasts The message is a special departure protocol message.

Specifically referring to part 302 in the above-mentioned embodiment of FIG. 3 , the first positioning tag broadcast message adopts a special departure protocol message. As mentioned above, the special departure protocol is modified by modifying the scannable broadcast message protocol, linkable wireless to broadcast protocol or unlinkable broadcast protocol.

In the case of using the scanning broadcast message protocol in the first method, the address information of the positioning label can be carried in the AdvA field in the SCAN_IND message, and the tag information can be carried in the Flag field in the SCAN_IND message, indicating that the The first positioning label broadcast message is a special departure protocol message.

In the case of using the linkable undirected broadcast protocol in the above-mentioned method 2, the address information of the positioning label can be carried in the AdvA field in the ADV_IND(1) message, and the label information can be carried in the ADV_IND(1) message. Flag field, indicating that the first positioning label broadcast message is a special departure protocol message.

In the case of using the unlinkable broadcast protocol in the third mode, the address information of the positioning label can be carried in the AdvA field in the ADV_NOCONN_IND(1) message, and the label information can be carried in the Flag in the ADV_NOCONN_IND(1) message. field, indicating that the first positioning label broadcast message is a special departure protocol message.

404: The positioning base station records the address information of the positioning tag.

After receiving the first positioning label broadcast message, the positioning base station obtains the address information of the positioning label in the first positioning label broadcast message, and records the address information of the positioning label in the storage of the positioning base station. The device may specifically include various storage devices, such as flash memory, and other types of memory, such as high-speed random access memory (RAM: Random Access Memory), and may also include non-volatile memory (non-volatile memory).

406: The positioning base station determines that the positioning tag is located in the positioning area of the base station according to the tag information, and returns a positioning tag broadcast response message to the positioning tag.

After receiving the first positioning label broadcast message, the positioning base station obtains the label information in the first positioning label broadcast message, and determines that the first positioning label broadcast message is a special departure protocol message, and then can determine The positioning tag is in the positioning area of the positioning base station, and sends a positioning tag broadcast response message to the positioning tag according to the special departure protocol, which corresponds to the message form of the first positioning tag broadcast message described above. The corresponding tag broadcast response message can be SCAN_REQ message, ADV_IND(2) message or ADV_NOCONN_IND(2). Wherein, the SCAN_REQ message DV_IND(2) message or the ScanA field of the ADV_NOCONN_IND(2) is used to carry the Bluetooth address of the positioning base station to send to the positioning tag, and the positioning tag performs departure judgment according to the Bluetooth address.

In another specific embodiment, the positioning base station may further include the following parts:

408 : Determine that the positioning base station has not received the second positioning tag broadcast message carrying the address information of the positioning tag within the set time; if the determination result is yes, go to 410 ; otherwise, go to 412 .

410: If the positioning base station does not receive the second positioning tag broadcast message carrying the address information of the positioning tag within the set time, determine that the positioning tag leaves the positioning area of the positioning base station.

Specifically, the positioning base station monitors whether it has received a second positioning tag broadcast message that carries the same address information of the positioning tag in the first positioning tag broadcast message recorded above, and if the second positioning tag broadcast message is not received within the set time Two positioning tag broadcast messages, it is determined that the positioning tag has left the positioning area of the positioning base station, and the positioning base station determines whether to do the next step according to the configuration of the application program. The positioning server performs subsequent processing according to the relevant application program, because the positioning service processing of the positioning server is not very related to the present invention, and will not be described in detail here. It can be understood that the message format of the second positioning label broadcast message here is the same as that of the above-mentioned first positioning label broadcast message, the above content can be referred to, and details are not repeated here.

412: If the positioning base station receives the second positioning label broadcast message carrying the address information of the positioning label within the set time, further judge whether the label information in the second positioning label broadcast message is equal to Set value, if the judgment result is yes, go to 414; otherwise, go to 416. The flag information in the second positioning label broadcast message is used to indicate whether the second positioning label broadcast message is a special departure protocol message.

Specifically, after receiving the second positioning label broadcast message, the positioning base station obtains the address information carried in the second positioning label broadcast message, if it is the same as the previously recorded address information of the positioning label of the first positioning label broadcast message, Then, it is further judged whether the marking information in the second positioning tag broadcast message is equal to the set value; if the judgment result is yes, go to 414 ; otherwise, go to 416 . For the specific judgment of whether the flag information is equal to the set value, refer to the judgment on the side of the positioning base station in the positioning system shown in FIG. 7 below. Not detailed here.

414: Determine that the positioning tag is in the positioning area of the positioning base station, and return a positioning tag broadcast response message to the positioning tag. For the method of returning the positioning tag broadcast response message to the positioning tag, refer to the above section 406, that is, the SCAN_REQ message DV_IND(2) message or ADV_NOCONN_IND(2) can be used, and the ScanA field therein carries the Bluetooth address of the positioning base station Send to the positioning tag, and the positioning tag will judge the departure according to the Bluetooth address.

416: If the tag information in the second positioning tag broadcast message is not equal to the set value, add 1 to the count value, and when the count value reaches the set threshold, determine the positioning tag leave the positioning area of the positioning base station.

For specific judgment, reference may be made to the positioning judgment described in the positioning system in FIG. 5 below, which will not be described in detail here.

Compared with the prior art, the positioning base station judges according to the existing protocol message, and the positioning base station judges according to the special departure protocol message in the special departure protocol (such as the above SCAN_IND message DV_IND(1) message or ADV_NOCONN_IND(1) message. ) for positioning judgment), which can make the departure judgment of the positioning base station more flexible (not limited to sending with positioning data), and because of the use of special departure protocol packets, the sending frequency is more flexible and usually lower than the existing protocol. frequency, thereby saving the power consumption of the positioning base station. Because the existing existing Bluetooth broadcast protocol messages (such as unlinkable broadcast protocol, linkable undirected broadcast protocol, linkable directional broadcast protocol, or scannable broadcast protocol) have certain limitations (for example, all require It is bound together with the sending and positioning data) and the high sending and receiving frequency increases the power consumption of the positioning base station for positioning judgment, so it is not as flexible as using this special departure protocol message for departure judgment (not limited to sending with positioning data). ), and because the special departure protocol message is used, the sending frequency is more flexible and is usually lower than the frequency of sending data in the existing protocol, so that the power consumption of the positioning base station can be saved.

Referring to FIG. 5 , a schematic flowchart of how a positioning system composed of a positioning tag 500 and a positioning base station 600 provided for an embodiment of the present application determines whether the positioning tag leaves the field, including: how the positioning tag broadcasts a response report according to the positioning tag returned by the positioning base station The text determines whether the positioning tag leaves the positioning area of the positioning base station group, and how the positioning base station determines whether the positioning tag leaves the positioning area of the base station according to the positioning tag broadcast message sent by the positioning tag. The specific instructions are as follows:

The positioning system system includes a positioning tag 500 and a positioning base station 600. It should be noted that the positioning base station 800 is any positioning base station in the above-described positioning base station group. The positioning tag 500 has a timer 502, a transmitter 506, a receiver 508, a memory and a processor (not shown in the figure, for details, please refer to FIG. It is stored in the memory, and the processor executes the function module or subroutine to complete the positioning judgment function of the positioning system). The positioning base station 600 includes a receiver 602, a transmitter 608, a memory and a processor (not shown in the figure, please refer to FIG. 11 for details, and the steps or functional modules or subroutines of 604, 606 and 610-618 in FIG. 5 can be stored In the memory, and the processor executes the function module or subroutine to complete the positioning judgment function of the positioning system)

As shown in Figure 7 above, the positioning system determines the departure of the positioning tag includes two parts, the positioning tag side and the positioning base station side. The following three scenarios are combined with the three scenarios shown in Figure 2, that is, the presence (for the judgment of the positioning tag side, Indicates that the positioning tag is in the positioning area of the positioning base station group. For the judgment of the positioning base station, it indicates that the positioning tag is in the positioning area of the positioning base station.), Departure (judgment on the positioning tag side In terms of the positioning tag, it indicates the state that the positioning tag leaves the positioning area of the positioning base station group. For the judgment of the positioning base station side, it indicates the state that the positioning tag leaves the positioning area of the positioning base station) and the approach (for the positioning tag). For the judgment of the positioning base station side, it means that the positioning tag enters the positioning area of the positioning base station group, and for the judgment of the positioning base station side, it means that the positioning tag enters the positioning area of the positioning base station. The positioning judgment of tags and positioning base stations is described in detail as follows:

1. Position the label side

When the positioning tag is powered on or reset, it is in the presence state by default.

(1) Judgment of the departure of the positioning tag

After the positioning tag is present, the transmitter 506 sends the positioning tag broadcast to the positioning service base station 600 according to the timing of the timer 502 (for example, every 60s or other values greater than 0, or other set time, which can be set according to the application scenario). message (for example, the SCAN_IND message mentioned above, which is described below as an example), the positioning tag listens to the positioning tag broadcast response message on the same channel (corresponding to the SCAN_REQ message in the above example, the following is based on this example to illustrate).

510: The positioning tag determines whether a positioning tag broadcast response message (eg, a SCAN_REQ message) sent by the transmitter 608 of the positioning base station 600 is received on the channel; if yes, go to 512; if not, go to 514. In another implementation manner, it may be determined that the location label has left the field, that is, the location label has left the site when the location label broadcast response message sent by the transmitter 608 of the location base station 600 is not received on the channel within a set time. Describe the positioning area of the positioning base station group.

512: The positioning tag determines whether the value of the ScanA field in the SCAN_REQ message sent from the positioning base station (for example, the value is specifically the Bluetooth address of the positioning base station) is equal to the set value (the set value represents a regular value) , such as the same value, the synchronization length is increased, and the specific algorithm formula is met); if so, go to 520 to determine that the positioning tag is still present, that is, in the positioning area of the positioning base station group, and clear the count (for example, the count value is 0 ); if not, go to 514.

The above-mentioned regularity value may specifically include one of the following situations:

The same value: the Bluetooth address values of all positioning base stations in the positioning area or all positioning base stations in the positioning base station group are equal;

The synchronization length is incremented: the Bluetooth addresses of all positioning base stations in the positioning area or all positioning base stations in the positioning base station group are incremented according to the specified step size;

Comply with a specific algorithm formula: The Bluetooth addresses of all positioning base stations in the positioning area or all positioning base stations in the positioning base station group are calculated according to the algorithm formula;

Others: The Bluetooth addresses of all positioning base stations in the positioning area or all positioning base stations in the positioning base station group are calculated according to other regular methods.

514: If the positioning tag determines that the SCAN_REQ message has not been received on the channel within the set time, or the value of the ScanA field in the SCAN_REQ message is not equal to the set value, add 1 to the count value, and turn 516.

516: When it is determined that the count exceeds a limit value (for example, 3 or other values greater than 0, set according to the application scenario), determine that the positioning tag has left the field, that is, leave the positioning area of the positioning base station group, and maintain The count value does not change.

After the positioning tag leaves the field, all positioning service functions except the departure judgment function (including sending SCAN_IND messages regularly, receiving SCAN_REQ messages, counting, and field judgment) are closed, and data chips (including geomagnetic and gyroscope chips but not limited to such chips) into the sleep state. The positioning service functions include positioning service functions such as stopping sending positioning data (for example, sending Bluetooth unlinkable broadcast messages), stopping positioning data collection, and positioning data calculation.

If the positioning tag itself does not make the above-mentioned departure judgment, the above-mentioned positioning service functions, such as the function of sending positioning data, the function of positioning data collection and the calculation function, will keep running regardless of whether it is on the field or in the field, thus causing the positioning tag to remain high. Power states to shorten the battery life cycle.

(2) Positioning label entry judgment

After the positioning tag leaves the field, the timer still regularly sends SCAN_IND messages and listens for SCAN_REQ messages on the same channel. If the SCAN_REQ message is received on the channel and the ScanA field is equal to the set value, it is judged that it has entered the field and the count value is cleared; otherwise, it still leaves the field and the count value remains unchanged. For the detailed judgment process, please refer to the above-mentioned departure judgment. It will not be repeated here.

After the positioning tag enters the field, enable all positioning business functions, including the above-mentioned functions of sending positioning data, collecting and calculating positioning data, and so on.

2. Locate the base station side

It should be noted that, as mentioned above, the positioning base station is any positioning base station in the positioning base station group.

604: The positioning base station determines whether the receiver 602 of the positioning base station has received the positioning tag broadcast message sent by the positioning tag within the set time (here, the SCAN_IND message is used as an example); if the judgment result is yes , go to 610 ; if no, go to 612 , or if no, directly determine that the positioning tag has left the positioning area of the positioning tag.

It should be noted that a specific positioning label is used as an example to illustrate. The specific positioning label may be a positioning label broadcast message that the positioning base station has received the positioning label before, and records the lower positioning label, for example, by The address information of the location label in the location label broadcast message is recorded, and the location label is associated with the address information.

610: After receiving the location label broadcast message of the location label, the receiver 602 of the location base station returns a location label broadcast response message to the pair summarized into the label, and further judges whether the label information in the location label broadcast message is set or not. If the judgment result is yes, go to 618 to determine that the positioning tag is present, that is, in the positioning area of the positioning base station; if the judgment result is no, go to 612 to add 1 to the count value.

Specifically, the SCAN_IND message and the SCAN_REQ message are used as examples to illustrate. After receiving the SCAN_IND message, the protocol stack of the positioning base station automatically sends the SCAN_REQ message and reports it to the application layer. The application layer processes the SCAN_IND message according to the requirements, or not. If the application layer receives the SCAN_IND message and the Flag field is equal to the set value, it determines that the positioning tag is present, and if the Flag field is not equal to the set value, go to 612 . For the specific judgment method, reference may be made to the judgment on the positioning label side in the above embodiment, which will not be repeated here.

612: Add 1 to the count value.

614: Determine whether the count value exceeds a limit value (for example, 3 or other values, which can be set as needed); if the determination result is yes, go to 616 to determine that the positioning tag has left the positioning area of the positioning base station.

After the positioning base station determines that the positioning tag leaves or enters the field, it will process it according to the application requirements.

FIG. 9 is a schematic structural block diagram of a positioning device 900 provided according to an embodiment of the present application, and the device shown in FIG. 10 may be the positioning device or the positioning label in the foregoing method embodiments (in FIGS. 1-3 and 5 ). , the functions of the above-mentioned positioning device or positioning label can be realized. The positioning device is applied in the positioning system, and the positioning device includes a transceiver unit 902 and a processing unit 904 .

a transceiver unit 900, configured to periodically send a positioning tag broadcast message to the positioning base station group;

The processing unit 902 is configured to determine whether the positioning label leaves the positioning area of the positioning base station group through the positioning label broadcast response message returned by at least one positioning base station in the positioning base station group, and when the positioning label leaves the positioning In the case of locating the positioning area of the base station group, the positioning service functions except the departure judgment function on the positioning label are turned off.

For the specific manner in which the transceiver unit 902 periodically sends the positioning tag broadcast message to the positioning base station group, please refer to the descriptions in the foregoing embodiments in FIG. 3 and FIG. 5 , and details are not repeated here.

The processing unit 904 uses the positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group to determine whether the positioning tag leaves the positioning area of the positioning base station group. For specific implementations, refer to the aforementioned FIG. 3 and FIG. The specific method of judging exit in 5 will not be repeated here.

The processing unit 904 is further configured to enable a positioning service function disabled on the positioning device when the positioning tag is located in the positioning area of the positioning base station group.

FIG. 10 is a schematic structural block diagram of a positioning base station 1000 provided according to an embodiment of the present application. The positioning base station shown in FIG. 10 may be the positioning base station in the foregoing method embodiments (in FIGS. 1-2 and 4-5 ). , the function of the positioning base station in the above embodiment can be implemented. The positioning base station is applied in the positioning system, and the positioning base station includes a transceiver unit 1002 and a processing unit 1004 .

The transceiver unit 1002 is configured to receive a first location label broadcast message periodically sent by a location label, where the first location label broadcast message carries label information and address information of the location label, and the label information indicates the The first positioning label broadcast message is a special departure protocol message;

The processing unit 1004 is configured to record the address information of the positioning tag, the positioning base station determines that the positioning tag is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to return to the positioning tag Positioning label broadcast response message.

For the specific manner in which the transceiver unit 1002 receives the first positioning tag broadcast message periodically sent by the positioning tag, please refer to the descriptions in the foregoing embodiments in FIG. 4 and FIG. 5 , which will not be repeated here.

The processing unit 1004 records the address information of the positioning tag, determines that the positioning tag is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to return a positioning tag broadcast response message to the positioning tag For the specific implementation manner, reference may be made to the specific implementation in the aforementioned FIG. 4 and FIG. 5 , which will not be repeated here.

In another specific implementation manner, the processing unit 1004 is further configured to determine if the processing unit does not receive the second positioning tag broadcast message carrying the address information of the positioning tag within the set time period. The positioning device leaves the positioning area of the positioning base station; or if the processing unit receives a second positioning label broadcast message carrying the address information of the positioning device within a set time, it is determined that the second positioning Whether the tag information in the tag broadcast packet is equal to the set value, the tag information in the second positioning tag broadcast packet is used to indicate whether the second positioning tag broadcast packet is a special departure protocol packet; If the tag information in the second positioning label broadcast message is equal to the set value, then it is determined that the positioning device is in the positioning area of the positioning base station, and a positioning label broadcast response message is returned to the positioning device; If the tag information in the two positioning tag broadcast message is not equal to the set value, the count value is increased by 1, and when the count value reaches the set threshold value, it is determined that the positioning device has left the positioning base station. location area. For specific implementations, reference may be made to the specific implementations in the aforementioned FIG. 4 and FIG. 5 , which will not be repeated here.

FIG. 11 is a schematic structural diagram of a positioning apparatus 1100 provided by an embodiment of the present application. The positioning apparatus shown in FIG. 11 may be a positioning device or a positioning label and a positioning base station in the foregoing method embodiments (as shown in FIGS. 1-5 ). , the functions of the above-mentioned positioning device or positioning label and positioning base station device can be realized. As shown in FIG. 11 , the apparatus 1100 includes a processor 1102 , a memory 1104 and a transceiver 1108 , and various connections 1110 connecting the processor 1102 , the memory 1104 and the transceiver 1108 . The transceiver 1106 is used for the device to communicate with the outside world, and the memory 1104 is used to store program instructions or the program 1106. The memory 1104 may include a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory ( non-volatile memory), such as at least one disk memory, the processor 1302 can invoke the program instructions stored in the memory 1104 to perform corresponding functions.

In a specific embodiment, the positioning device is the aforementioned positioning device, and in this embodiment:

A transceiver 1102, configured to periodically send a positioning tag broadcast message to the positioning base station group;

The processor 1104 is configured to determine whether the positioning label leaves the positioning area of the positioning base station group through the positioning label broadcast response message returned by at least one positioning base station in the positioning base station group, and when the positioning label leaves the positioning In the case of locating the positioning area of the base station group, the positioning service functions except the departure judgment function on the positioning label are turned off.

For the specific manner in which the transceiver 1102 periodically sends the positioning tag broadcast message to the positioning base station group, please refer to the descriptions in the foregoing embodiments in FIG. 3 and FIG. 5 , and details are not repeated here.

The processor 1104 uses the positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group to determine whether the positioning tag leaves the positioning area of the positioning base station group. For specific implementations, refer to FIG. 3 and FIG. The specific method of judging exit in 5 will not be repeated here.

The processor 1104 is further configured to enable a positioning service function disabled on the positioning device when the positioning device is in the positioning area of the positioning base station group.

In another specific embodiment, the positioning device is the aforementioned positioning base station, in this embodiment:

The transceiver 1102 is configured to receive a first location label broadcast message periodically sent by a location label, where the first location label broadcast message carries label information and address information of the location label, and the label information indicates the location label. The first positioning label broadcast message is a special departure protocol message;

The processor 1104 is configured for the positioning base station to record the address information of the positioning tag, the positioning base station determines that the positioning tag is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to The location label returns a location label broadcast response message.

For the specific manner in which the transceiver 1102 receives the first positioning tag broadcast message periodically sent by the positioning tag, please refer to the descriptions in the foregoing embodiments in FIG. 4 and FIG. 5 , which will not be repeated here.

The processor 1104 records the address information of the positioning tag, determines that the positioning tag is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to return a positioning tag broadcast response message to the positioning tag For the specific implementation manner, reference may be made to the specific implementation in the aforementioned FIG. 4 and FIG. 5 , which will not be repeated here.

In another specific implementation manner, the processor 1104 is further configured to determine if the processing unit does not receive the second positioning tag broadcast message carrying the address information of the positioning tag within the set time period. The positioning device leaves the positioning area of the positioning base station; or if the processing unit receives a second positioning label broadcast message carrying the address information of the positioning device within a set time, it is determined that the second positioning Whether the tag information in the tag broadcast packet is equal to the set value, the tag information in the second positioning tag broadcast packet is used to indicate whether the second positioning tag broadcast packet is a special departure protocol packet; If the tag information in the second positioning label broadcast message is equal to the set value, then it is determined that the positioning device is in the positioning area of the positioning base station, and a positioning label broadcast response message is returned to the positioning device; If the tag information in the two positioning tag broadcast message is not equal to the set value, the count value is increased by 1, and when the count value reaches the set threshold value, it is determined that the positioning device has left the positioning base station. location area. For specific implementations, reference may be made to the specific implementations in the aforementioned FIG. 4 and FIG. 5 , which will not be repeated here.

It should be noted that, in the embodiment shown in FIG. 11 , in addition to the above-mentioned conventional methods such as executing the program code instructions on the memory through the processor, this embodiment can also virtualize NFV based on physical servers combined with network functions. The virtual first network device and the second network device implemented by the technology, the virtual first network device is a virtual router or a switch. By reading this application, those skilled in the art can virtualize multiple PE devices with the above functions on a physical server in combination with the NFV technology. It will not be repeated here.

FIG. 12 is a schematic structural diagram of a positioning system 1200 provided according to an embodiment of the present application. The system shown in FIG. 12 includes a positioning device 1202 and a positioning base station 1204, where the positioning device may be those shown in FIGS. 1-5 and The positioning device or the positioning label in the embodiment in 9; the positioning base station may be the positioning base station in the embodiment in the above-mentioned FIGS. 1-5 and 9 . For the functions or the steps performed by the positioning device and the positioning base station in this embodiment, reference is made to the above-mentioned embodiments, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and components shown as modules may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each module may exist physically alone, or two or more modules may be integrated into one unit. The above-mentioned integrated modules can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, random access memory (full name in English: Random Access Memory, abbreviated as: RAM), magnetic disk or optical disk and other media that can store data.

Claims (30)

1. A positioning method, applied in a positioning label and a positioning system composed of a positioning base station group formed by at least two positioning base stations, is characterized in that, the method comprises: The positioning tag periodically sends a positioning tag broadcast message to the positioning base station group; The positioning tag determines whether the positioning tag leaves the positioning area of the positioning base station group through a positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group; When the positioning tag leaves the positioning area of the positioning base station group, the positioning service functions on the positioning tag except the departure judgment function are disabled. 2 . The method according to claim 1 , wherein the positioning tag enables a positioning service function disabled on the positioning tag when it is determined that the positioning tag is located in the positioning area of the positioning base station group. 3 . 3. The method according to claim 1 or 2, wherein the positioning label determines whether the positioning label leaves the positioning through a positioning label broadcast response message returned by at least one positioning base station in the positioning base station group The positioning area of the base station group specifically includes: The positioning tag monitors the positioning tag broadcast response message returned by the positioning base station in the positioning base station group on the same channel as sending the positioning tag broadcast message; If the positioning tag does not receive a positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, it is determined that the positioning tag has left the location of the positioning base station group. location area. 4. The method according to claim 1 or 2, wherein the positioning label determines whether the positioning label leaves the positioning through a positioning label broadcast response message returned by at least one positioning base station in the positioning base station group The positioning area of the base station group specifically includes: S1: the positioning tag monitors the positioning tag broadcast response message returned by the positioning base station in the positioning base station group on the same channel as sending the positioning tag broadcast message; S2: The positioning label receives a positioning label broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, and the positioning label broadcast response message includes the at least one positioning base station. the bluetooth address; S3: The positioning tag determines whether the Bluetooth address of the at least one positioning base station has regularity, and if it does not have regularity, then the count value is increased by 1, and when the count value does not reach the set threshold, continue to perform steps S1 to S3; S4: When the count value reaches the set threshold, determine that the positioning tag has left the positioning area of the positioning base station group. 5 . The method according to claim 4 , wherein, if the positioning tag determines that the Bluetooth address of the at least one positioning base station has regularity in the step S3, the positioning tag determines the positioning tag. 6 . In the positioning area of the positioning base station group, the count value is cleared to zero, and the positioning service function disabled on the positioning label is enabled. 6. The method according to claim 5, wherein the determining whether the Bluetooth address of the at least one positioning base station has regularity specifically includes one of the following situations: The Bluetooth address values of multiple positioning base stations in the positioning area are the same; The Bluetooth address values of multiple positioning base stations in the positioning area are incremented according to a specified step size; and The Bluetooth address values of the multiple positioning base stations in the positioning area are calculated according to a specific algorithm formula. 7. method as claimed in claim 2 is characterized in that, the location service function that is closed on described location label comprises at least one of following functions: the collection function of location data, the calculation function of location data and the transmission function of location data . 8. The method according to claim 1 or 2, wherein the positioning label broadcast message and the positioning label broadcast response message adopt a special off-site protocol, and the special off-site protocol includes a SCAN_IND message and a SCAN_REQ message, the positioning tag broadcast message is the SCAN_IND message, the positioning tag broadcast response message is the SCAN_REQ message, and the special departure protocol is obtained by modifying the scannable broadcast message protocol. 9. The method of claim 8, wherein the special departure protocol does not include a SCAN_REP message, and the SCAN_IND message does not include a Data field. 10. The method according to claim 1 or 2, wherein the positioning label broadcast message and the positioning label broadcast response message adopt a special departure protocol, and the special departure protocol comprises ADV_IND(1) message and ADV_IND(2) message, the location label broadcast message is the ADV_IND(1) message, the location label broadcast response message is the ADV_IND(2) message, the special departure The protocol is obtained by modifying the linkable undirected broadcast protocol. The method according to claim 10, wherein the ADV_IND(1) and ADV_IND(2) messages do not include a Data field, and the ADV_IND(2) includes a ScanA field that carries the Bluetooth of the positioning base station address. 12. The method according to claim 1 or 2, wherein the positioning label broadcast message and the positioning label broadcast response message adopt a special departure protocol, and the special departure protocol includes ADV_NOCONN_IND(1) message and ADV_NOCONN_IND(2) message, the location label broadcast message is the ADV_NOCONN_IND(1) message, the location label broadcast response message is the ADV_NOCONN_IND(2) message, the special departure The protocol is obtained by modifying the unlinkable broadcast protocol. 13. The method according to claim 12, wherein the ADV_NOCONN_IND(1) and ADV_NOCONN_IND(2) messages do not include a Data field, and the ADV_NOCONN_IND(2) includes a ScanA field that carries the Bluetooth of the positioning base station address. 14. A positioning method, applied to a positioning label and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the method comprises: Any positioning base station in the positioning base station group receives a first positioning label broadcast message periodically sent by a positioning label, and the first positioning label broadcast message carries label information and address information of the positioning label. The label information Indicate that the first positioning label broadcast message is a special departure protocol message; The positioning base station records the address information of the positioning tag; The positioning base station determines that the positioning tag is located in the positioning area of the base station according to the tag information, and returns a positioning tag broadcast response message to the positioning tag. 15. The method of claim 14, further comprising: If the positioning base station does not receive the second positioning tag broadcast message carrying the address information of the positioning tag within the set time, it is determined that the positioning tag leaves the positioning area of the positioning base station. 16. The method of claim 15, further comprising: If the positioning base station receives the second positioning tag broadcast message carrying the address information of the positioning tag within the set time, it will judge whether the tag information in the second positioning tag broadcast message is equal to the set value , the marking information in the second positioning label broadcast message is used to indicate whether the second positioning label broadcast message is a special departure protocol message; If the tag information in the second positioning tag broadcast message is equal to the set value, determine that the positioning tag is in the positioning area of the positioning base station, and return a positioning tag broadcast response message to the positioning tag; If the tag information in the broadcast message of the second positioning tag is not equal to the set value, the count value is incremented by 1, and when the count value reaches the set threshold, it is determined that the positioning tag leaves the positioning The location area of the base station. 17. The method of claim 16, wherein the flag information is equal to a set value, indicating that the flag information indicates that the second positioning label broadcast message is a special departure protocol message. 18. The method according to any one of claims 14-17, wherein the positioning tag broadcast message and the positioning tag broadcast response message adopt a special offsite protocol, and the offsite protocol message includes SCAN_IND message and SCAN_REQ message, the positioning tag broadcast message is the SCAN_IND message, the positioning tag broadcast response message is the SCAN_REQ message, and the special departure protocol can be scanned by modifying the broadcast message protocol. get. 19. The method of claim 18, wherein the special departure protocol does not include a SCAN_REP message, and the flag information is recorded in a Flag field in the SCAN_IND message, and the SCAN_IND message The text does not include the Data field. 20. A positioning device, used in a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning device comprises: a transceiver unit, configured to periodically send positioning equipment broadcast messages to the positioning base station group; A processing unit, configured to determine whether the positioning device leaves the positioning area of the positioning base station group through the positioning label broadcast response message returned by at least one positioning base station in the positioning base station group, and when the positioning device leaves the positioning In the case of the positioning area of the base station group, the positioning service functions other than the departure judgment function on the positioning device are turned off. 21. The positioning device according to claim 20, wherein the processing unit is further configured to enable the positioning that is disabled on the positioning device when the positioning device is in the positioning area of the positioning base station group Business functions. 22. The positioning device according to claim 20 or 21, wherein the processing unit determines whether the positioning device leaves the The positioning area of the positioning base station group specifically includes: The processing unit monitors the positioning label broadcast response message returned by the positioning base station in the positioning base station group on the same channel as sending the positioning label broadcast message; If the transceiver unit does not receive a positioning tag broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, the processing unit determines that the positioning device has left the Locate the location area of the base station group. 23. The positioning device according to claim 20 or 21, wherein the processing unit determines whether the positioning device leaves the The positioning area of the positioning base station group specifically includes: S1: The processing unit monitors the positioning label broadcast response message returned by the positioning base station in the positioning base station group on the same channel as sending the positioning label broadcast message; S2: The transceiver unit receives a positioning label broadcast response message returned by at least one positioning base station in the positioning base station group on the same channel, and the positioning label broadcast response message includes the at least one positioning base station. the bluetooth address; S3: The processing unit determines whether the Bluetooth address of the at least one positioning base station has regularity, and if not, the count value is increased by 1, and when the count value does not reach the set threshold, the steps are continued S1 to S3; S4: When the count value reaches the set threshold, determine that the positioning device has left the positioning area of the positioning base station group. 24. The positioning device according to claim 23, wherein, if the processing unit determines in step S3 that the Bluetooth address of the at least one positioning base station has regularity, the processing unit determines the positioning When the device is located in the positioning area of the positioning base station group, the count value is cleared to zero, and the positioning service function disabled on the positioning device is enabled. 25. A positioning base station, applied in a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning base station is any positioning base station in the positioning base station group, characterized in that: The base station includes: a transceiver unit, configured to receive a first positioning label broadcast message periodically sent by the positioning device, the first positioning label broadcast message carrying label information and address information of the positioning device, the label information indicating the The first positioning label broadcast message is a special departure protocol message; a processing unit, used for the positioning base station to record the address information of the positioning device, the positioning base station determines that the positioning device is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to send the positioning device to the positioning The device returns a location label broadcast response message. 26. The positioning base station as claimed in claim 25, characterized in that it rains, and the processing unit is further used for: If the transceiver unit does not receive the second positioning tag broadcast message carrying the address information of the positioning device within the set time, it is determined that the positioning device has left the positioning area of the positioning base station. 27. The positioning base station of claim 26, wherein the processing unit is further configured to: If the transceiver unit receives the second positioning tag broadcast message carrying the address information of the positioning device within the set time, it will determine whether the tag information in the second positioning tag broadcast message is equal to the set value , the marking information in the second positioning label broadcast message is used to indicate whether the second positioning label broadcast message is a special departure protocol message; If the flag information in the second positioning label broadcast message is equal to the set value, determine that the positioning device is in the positioning area of the positioning base station, and return a positioning label broadcast response message to the positioning device; If the marking information in the broadcast message of the second positioning tag is not equal to the set value, the count value is increased by 1, and when the count value reaches the set threshold value, it is determined that the positioning device has left the positioning The location area of the base station. 28. The positioning base station according to claim 27, wherein the flag information is equal to a set value, indicating that the flag information indicates that the second positioning label broadcast message is a special departure protocol message. 29. A positioning device, used in a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning device comprises: a transceiver, configured to periodically send a positioning tag broadcast message to the positioning base station group; The processor is configured to determine whether the positioning device leaves the positioning area of the positioning base station group through the positioning label broadcast response message returned by at least one positioning base station in the positioning base station group, and when the positioning device leaves the positioning In the case of the positioning area of the base station group, the positioning service functions other than the departure judgment function on the positioning device are turned off. 30. A positioning base station, applied in a positioning device and a positioning system composed of a positioning base station group formed by at least two positioning base stations, wherein the positioning base station is any positioning base station in the positioning base station group, characterized in that: The base station includes: a transceiver, configured to receive a first positioning label broadcast message periodically sent by a positioning device, the first positioning label broadcast message carrying label information and address information of the positioning device, the label information indicating the first positioning label broadcast message The positioning tag broadcast message is a special departure protocol message; a processor, for the positioning base station to record the address information of the positioning device, and the positioning base station determines that the positioning device is in the positioning area of the base station according to the marking information, and instructs the transceiver unit to locate the positioning device The device returns a location label broadcast response message.

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