CN102510554B - Heterogeneous communication multi-resolution combined positioning and fusion processing device and working method thereof - Google Patents

Abstract

The invention relates to a heterogeneous communication multi-resolution combined positioning fusion processing device and a working method thereof, which belong to the technical field of communication. The device includes a position acquisition unit, a data processing and control unit, and a data transmission unit; the position acquisition unit includes a GNSS module, a Bluetooth module, a radio frequency module, and an integrated communication module for supporting WiFi wireless access points; the data processing and control unit includes a micro The processor and its connected storage module, power management module, and status indication module; the data transmission unit includes: an integrated communication module and a WiFi interface for supporting WiFi wireless access points; auxiliary facilities are installed outside the device, including a Bluetooth signal source , radio frequency signal source and wireless access point; the invention solves the problem of real-time and continuous positioning of the monitoring target to a certain extent, and improves the positioning accuracy by combining multiple positioning methods. Save manpower and financial resources in item management and other work.

Description

Heterogeneous communication multi-resolution combined positioning fusion processing device and working method

technical field

The invention relates to a heterogeneous communication multi-resolution combined positioning fusion processing device and a working method thereof, belonging to the technical field of communication.

Background technique

Radio frequency, usually defined as: a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments. The technology has developed rapidly in recent years due to its ease of use and reliability. The applications that have been realized in the field of monitoring include: coal mine underground personnel positioning, logistics supply system, prison prison personnel management, etc.

Bluetooth is a radio technology that supports short-distance communication (generally within 10m) of devices, and works in the globally common 2.4GHz frequency band. Using Bluetooth technology, wireless information exchange can be carried out between many devices including mobile phones, PDAs, wireless headsets, notebook computers and so on.

GNSS is the abbreviation of Global Navigation Satellite System. The Chinese translation should be Global Navigation Satellite System. At present, GNSS includes GPS of the United States, GLONASS of Russia, Compass (Beidou) of China, and Galileo system of the European Union. The user only needs to receive the signals of more than 3 satellites in the system corresponding to the device through the receiving device to determine the user's position. At present, GNSS has been widely used in positioning, navigation, scheduling and other fields.

WiFi is a technology that can connect terminals such as personal computers and handheld devices (such as PDAs and mobile phones) to each other in a wireless manner, and is mainly used in wireless data transmission.

For the positioning and monitoring of special groups such as the elderly, children, and prison inmates, GPS positioning devices are generally used at present. Since GPS positioning devices rely on direct radio waves from satellites in the sky for positioning, GPS signals are often blocked indoors or in densely built areas. , the positioning device cannot receive the signal, the continuity and accuracy of positioning are greatly disturbed, and the working range of the device is limited.

Contents of the invention

Aiming at the defects of the prior art, the present invention provides a heterogeneous communication multi-resolution combined positioning fusion processing device and its working method based on GNSS, Bluetooth, radio frequency, and WiFi.

A heterogeneous communication multi-resolution combined positioning fusion processing device, including a position acquisition unit that provides position information for the device, a data processing and control unit that controls the device and processes the position information, and realizes data interaction between the device and user information Transmission unit; the position acquisition unit includes a GNSS module, a Bluetooth module, a radio frequency module and a WiFi module, and the GNSS module, a Bluetooth module, a radio frequency module and a WiFi module are all connected to the microprocessor of the data processing and control unit through a serial port; the data processing and control unit It includes a microprocessor and a storage module connected to the microprocessor, a power management module, and a status indication module; the data transmission unit includes a WiFi module and a WiFi interface, and the WiFi module is connected to the microprocessor of the data processing and control unit through a serial port; the device Auxiliary facilities are installed outside, including Bluetooth signal sources installed in dense outdoor buildings and multi-storey buildings, RF signal sources installed in places requiring precise positioning, and wireless access points.

The GNSS module is an electronic module with satellite signal receiving function.

The bluetooth module is an electronic module with bluetooth data transmission function.

The radio frequency module is an electronic module with radio frequency data transmission function.

The WiFi module is an electronic module with wireless data transmission function.

The microprocessor is a microprocessor with data processing and process control functions.

A working method of a heterogeneous communication multi-resolution combined positioning fusion processing device is as follows:

Step A: The device is powered on and initialized. The data processing and control unit detects the position acquisition unit and the data transmission unit to determine whether each part is working normally. Part of the work is normal, the device performs step B, if abnormality is detected, re-execute step A;

Step B, the data processing and control unit monitors the WiFi interface to see if there is a location acquisition instruction from the user. If the location acquisition instruction is received, the device executes step C. If the location acquisition instruction is not received, the device continues to wait for the instruction until an instruction arrives. ;

Step C, the GNSS module in the position acquisition unit receives the current position data of the satellite signal acquisition device, if the acquisition is successful, the returned position data is sent to the data processing and control unit, and the data processing and control unit adds the GNSS mark before the data as The packet header is packaged and temporarily stored in the storage module as data packet 1. If the acquisition fails, the device abnormality flag is used as data packet 1 and temporarily stored in the storage module; each Bluetooth signal source has a different device number, and the device is continuously The device number of the device is sent out through the Bluetooth signal. If the device enters the signal coverage of the Bluetooth signal source, the Bluetooth module in the device will perform data transmission with the Bluetooth signal source through Bluetooth communication to obtain the device number of the Bluetooth signal source. The Bluetooth module will get The device number of the device is sent to the data processing and control unit. At the same time, the WiFi module communicates with the three wireless access points with the strongest detected signals to obtain the field strength data of each wireless access point, and then the field strength data Send to the data processing and control unit, the data processing and control unit reads the data packet 1 from the storage module, adds the Bluetooth logo as the header before the data of the data packet 1, and combines the Bluetooth signal source device number obtained from the Bluetooth information source together with the WiFi The field strength data obtained by the module is added together as the end of the packet after the data in packet 1, and then packaged again as packet 2, which is temporarily stored in the storage module. If the device is not within the signal coverage of the Bluetooth signal source, directly use packet 1 as Data packet 2, temporarily stored in the storage module; each radio frequency signal source has a different device number, and the device number of the device is continuously sent out through the radio frequency signal. If the device enters the signal coverage of the radio frequency signal source, the radio frequency in the device The module performs data transmission with the radio frequency signal source through radio frequency communication, obtains the device number of the radio frequency signal source, and the radio frequency module sends the obtained device number to the data processing and control unit, and the data processing and control unit reads the data packet from the storage module 2 , add the RF flag as the packet header before the packet 2 data, add the RF signal source device number obtained from the RF signal source as the packet tail after the packet 2 data, and pack it again as packet 3. If the device is not in the RF Within the signal coverage of the signal source, directly use data packet 2 as data packet 3;

Step D, the data processing and control unit hands over the data packet 3 to the data transmission unit, and sends it to the user through the WiFi module;

Step E, at the user end, the precise location of each bluetooth signal source and radio frequency signal source is recorded, and the user receives the data packet 3 and unpacks it: if the packet header is a radio frequency symbol, then the position data at the end of the packet is obtained by radio frequency, Get the data at the end of the packet, and query the location of the corresponding signal source on the user end according to the recorded device number of the RF signal source. This location is the current location of the device. In this case, the positioning accuracy is the highest; if the header is the Bluetooth logo, the device is located in an outdoor building In densely populated places or in buildings, query the Bluetooth signal source device according to the Bluetooth signal source device number recorded in the packet tail data. If it is an outdoor Bluetooth signal source, query the location of the corresponding signal source on the user end. That is, as the current location of the device, if it is an indoor Bluetooth signal source, first obtain the floor number of the device by querying the device number, and then perform differential calculations on the field strength data recorded in the data packet to obtain the specific location of the device on this floor , the positioning accuracy of this case is lower than that of the first case; if it is a GNSS flag, the position data is obtained through GNSS, and the current position data of the device can be obtained by taking the data at the end of the packet. This case has the lowest positioning accuracy compared with the previous two cases; If the data in the data packet 3 is an abnormal flag of the device, it indicates that the device is faulty.

The beneficial effects of the present invention are:

1) It meets the requirements for real-time and continuous positioning of monitoring targets.

2) The combination of multiple positioning methods reduces the measurement error and improves the positioning accuracy.

3) The application of the device and method can reduce the consumption of human and financial resources in the management of personnel and objects, and improve the level of digitization, informationization and intelligence of management.

Description of drawings

Fig. 1 is a schematic diagram of connection of various parts of the present invention.

Fig. 2 is a flow chart of the working method of the combined positioning device provided by the present invention.

FIG. 3 is a flow chart of the process of unpacking the data packet at the client end of the present invention.

Among them, 1. Data processing and control unit, 2. Position acquisition unit, 3. Data transmission unit, 4. Microprocessor, 5. Storage module, 6. Power management module, 7. Status indication module, 8. GNSS module, 9. Bluetooth module, 10. Radio frequency module, 11. WiFi module, 12. WiFi interface.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but is not limited thereto.

Example 1:

A heterogeneous communication multi-resolution combined positioning fusion processing device, including a position acquisition unit 2 that provides position information for the device, a data processing and control unit 1 that controls the device and processes the position information, and realizes information interaction between the device and the user The data transmission unit 3; the position acquisition unit 2 includes a GNSS module 8, a bluetooth module 9, a radio frequency module 10 and a WiFi module 11, and the GNSS module 8, the bluetooth module 9, the radio frequency module 10 and the WiFi module 11 are all connected with the data processing and control unit 1 The microprocessor 4 is connected through a serial port; the data processing and control unit 1 includes a microprocessor 4 and a storage module 5 connected to the microprocessor 4, a power management module 6, and a status indication module 7; the data transmission unit 3 includes a WiFi module 11 and the WiFi interface 12, the WiFi module 11 is connected with the microprocessor 4 of the data processing and control unit 1 through a serial port; auxiliary facilities are installed outside the device, and the auxiliary facilities include Bluetooth signals installed in dense outdoor buildings and multi-storey buildings Sources, RF signal sources installed where precise positioning is required, and wireless access points.

The GNSS module is an electronic module with satellite signal receiving function.

The bluetooth module is an electronic module with bluetooth data transmission function.

The radio frequency module is an electronic module with radio frequency data transmission function.

The WiFi module is an electronic module with wireless data transmission function.

The microprocessor is a microprocessor with data processing and process control functions.

A working method of a heterogeneous communication multi-resolution combined positioning fusion processing device is as follows:

Step A: The device is powered on and initialized. The data processing and control unit detects the position acquisition unit and the data transmission unit to determine whether each part is working normally. Part of the work is normal, the device performs step B, if abnormality is detected, re-execute step A;

Step B, the data processing and control unit monitors the WiFi interface to see if there is a location acquisition instruction from the user. If the location acquisition instruction is received, the device executes step C. If the location acquisition instruction is not received, the device continues to wait for the instruction until an instruction arrives. ;

Step C, the GNSS module in the position acquisition unit receives the current position data of the satellite signal acquisition device, if the acquisition is successful, the returned position data is sent to the data processing and control unit, and the data processing and control unit adds the GNSS mark before the data as The packet header is packaged and temporarily stored in the storage module as data packet 1. If the acquisition fails, the device abnormality flag is used as data packet 1 and temporarily stored in the storage module; each Bluetooth signal source has a different device number, and the device is continuously The device number of the device is sent out through the Bluetooth signal. If the device enters the signal coverage of the Bluetooth signal source, the Bluetooth module in the device will perform data transmission with the Bluetooth signal source through Bluetooth communication to obtain the device number of the Bluetooth signal source. The Bluetooth module will get The device number of the device is sent to the data processing and control unit. At the same time, the WiFi module communicates with the three wireless access points with the strongest detected signals to obtain the field strength data of each wireless access point, and then the field strength data Send to the data processing and control unit, the data processing and control unit reads the data packet 1 from the storage module, adds the Bluetooth logo as the header before the data of the data packet 1, and combines the Bluetooth signal source device number obtained from the Bluetooth information source together with the WiFi The field strength data obtained by the module is added together as the end of the packet after the data in packet 1, and then packaged again as packet 2, which is temporarily stored in the storage module. If the device is not within the signal coverage of the Bluetooth signal source, directly use packet 1 as Data packet 2, temporarily stored in the storage module; each radio frequency signal source has a different device number, and the device number of the device is continuously sent out through the radio frequency signal. If the device enters the signal coverage of the radio frequency signal source, the radio frequency in the device The module performs data transmission with the radio frequency signal source through radio frequency communication, obtains the device number of the radio frequency signal source, and the radio frequency module sends the obtained device number to the data processing and control unit, and the data processing and control unit reads the data packet 2 from the storage module , add the RF flag as the packet header before the packet 2 data, add the RF signal source device number obtained from the RF signal source as the packet tail after the packet 2 data, and pack it again as packet 3. If the device is not in the RF Within the signal coverage of the signal source, directly use data packet 2 as data packet 3;

Step D, the data processing and control unit hands over the data packet 3 to the data transmission unit, and sends it to the user through the WiFi module;

Step E, at the user end, the precise location of each bluetooth signal source and radio frequency signal source is recorded, and the user receives the data packet 3 and unpacks it: if the packet header is a radio frequency symbol, then the location data at the end of the packet is obtained by radio frequency, Get the data at the end of the packet, and query the location of the corresponding signal source on the user end according to the recorded device number of the RF signal source. This location is the current location of the device, and the positioning accuracy is the highest in this case; In densely populated places or buildings, query the Bluetooth signal source device according to the Bluetooth signal source device number recorded in the packet tail data. If it is an outdoor Bluetooth signal source, query the location of the corresponding signal source on the user end. That is, as the current location of the device, if it is an indoor Bluetooth signal source, first obtain the floor number of the device by querying the device number, and then perform differential calculations on the field strength data recorded in the data packet to obtain the specific location of the device on this floor , the positioning accuracy of this case is lower than that of the first case; if it is a GNSS flag, the position data is obtained through GNSS, and the current position data of the device can be obtained by taking the data at the end of the packet, which is the lowest positioning accuracy compared with the previous two cases; If the data in the data packet 3 is an abnormal flag of the device, it indicates that the device is faulty.

Claims (1)

1. A working method of a heterogeneous communication multi-resolution combined positioning fusion processing device, which is applied to a heterogeneous communication multi-resolution combined positioning fusion processing device, including a position acquisition unit providing position information for the device, The data processing and control unit that controls the device and processes the position information, and the data transmission unit that realizes the information interaction between the device and the user; the position acquisition unit includes a GNSS module, a Bluetooth module, a radio frequency module and a WiFi module, a GNSS module, a Bluetooth module, Both the radio frequency module and the WiFi module are connected to the microprocessor of the data processing and control unit through a serial port; the data processing and control unit includes a microprocessor and a storage module connected to the microprocessor, a power management module, and a status indication module; data transmission The unit includes a WiFi module and a WiFi interface. The WiFi module is connected to the microprocessor of the data processing and control unit through a serial port; auxiliary facilities are installed outside the device, and the auxiliary facilities include Bluetooth signal sources installed in dense outdoor buildings and multi-storey buildings. , The radio frequency signal source and wireless access point installed at the precise location; It is characterized in that the working method is as follows: Step A: The device is powered on and initialized. The data processing and control unit detects the position acquisition unit and the data transmission unit to determine whether each part is working normally. Part of the work is normal, the device performs step B, if abnormality is detected, re-execute step A; Step B, the data processing and control unit monitors the WiFi interface to see if there is a location acquisition instruction from the user. If the location acquisition instruction is received, the device executes step C. If the location acquisition instruction is not received, the device continues to wait for the instruction until an instruction arrives. ; Step C, the GNSS module in the position acquisition unit receives the current position data of the satellite signal acquisition device, if the acquisition is successful, the returned position data is sent to the data processing and control unit, and the data processing and control unit adds the GNSS mark before the data as The packet header is packaged and temporarily stored in the storage module as data packet 1. If the acquisition fails, the device abnormality flag is used as data packet 1 and temporarily stored in the storage module; each Bluetooth signal source has a different device number, and the device is continuously The device number of the device is sent out through the Bluetooth signal. If the device enters the signal coverage of the Bluetooth signal source, the Bluetooth module in the device will perform data transmission with the Bluetooth signal source through Bluetooth communication to obtain the device number of the Bluetooth signal source. The Bluetooth module will get The device number of the device is sent to the data processing and control unit. At the same time, the WiFi module communicates with the three wireless access points with the strongest detected signals to obtain the field strength data of each wireless access point, and then the field strength data Send to the data processing and control unit, the data processing and control unit reads the data packet 1 from the storage module, adds the Bluetooth logo as the header before the data of the data packet 1, and combines the Bluetooth signal source device number obtained from the Bluetooth information source together with the WiFi The field strength data obtained by the module is added together as the end of the packet after the data in packet 1, and then packaged again as packet 2, which is temporarily stored in the storage module. If the device is not within the signal coverage of the Bluetooth signal source, directly use packet 1 as Data packet 2, temporarily stored in the storage module; each radio frequency signal source has a different device number, and the device number of the device is continuously sent out through the radio frequency signal. If the device enters the signal coverage of the radio frequency signal source, the radio frequency in the device The module performs data transmission with the radio frequency signal source through radio frequency communication, obtains the device number of the radio frequency signal source, and the radio frequency module sends the obtained device number to the data processing and control unit, and the data processing and control unit reads the data packet from the storage module 2 , add the RF flag as the packet header before the packet 2 data, add the RF signal source device number obtained from the RF signal source as the packet tail after the packet 2 data, and pack it again as packet 3. If the device is not in the RF Within the signal coverage of the signal source, directly use data packet 2 as data packet 3; Step D, the data processing and control unit hands over the data packet 3 to the data transmission unit, and sends it to the user through the WiFi module; Step E, at the user end, the precise location of each bluetooth signal source and radio frequency signal source is recorded, and the user receives the data packet 3 and unpacks it: if the packet header is a radio frequency symbol, then the position data at the end of the packet is obtained by radio frequency, Get the data at the end of the packet, and query the location of the corresponding signal source on the user end according to the recorded device number of the RF signal source. This location is the current location of the device. In this case, the positioning accuracy is the highest; if the header is the Bluetooth logo, the device is located in an outdoor building In densely populated places or in buildings, query the Bluetooth signal source device according to the Bluetooth signal source device number recorded in the packet tail data. If it is an outdoor Bluetooth signal source, query the location of the corresponding signal source on the user end. That is, as the current location of the device, if it is an indoor Bluetooth signal source, first obtain the floor number of the device by querying the device number, and then perform differential calculations on the field strength data recorded in the data packet to obtain the specific location of the device on this floor , the positioning accuracy of this case is lower than that of the first case; if it is a GNSS flag, the position data is obtained through GNSS, and the current position data of the device can be obtained by taking the data at the end of the packet. This case has the lowest positioning accuracy compared with the previous two cases; If the data in the data packet 3 is an abnormal flag of the device, it indicates that the device is faulty.