CN103457786A - Sensor access detection method, device and system - Google Patents

Abstract

The embodiment of the invention provides a sensor access detection method, device and system to solve the problems that in the prior art, when a terminal sends query requests to detect whether sensor access exits or not in a timed mode, the instantaneity of sensor access detection is hard to guarantee, the quantity of electricity consumed in the detection is large and the system is large in resource occupation. According to the method, a sensor can initiatively send a connection request to the terminal according to a sensor communication protocol, the terminal judges whether the sensor access is successful or not according to the received connection request, and therefore the problems that when the terminal is used for detecting whether the sensor access exists or not, the instantaneity of the sensor access detection is hard to guarantee due to the overlong timed time, and the quantity of the electricity consumed in detection is large and the system is large in resource occupation due to the too short timed time can be solved.

Description

A sensor access detection method, device and system

technical field

The present invention relates to the communication field, in particular to a sensor access detection method, device and system.

Background technique

In the prior art, when performing sensor access detection, the terminal will actively send query messages through various interfaces, and if a correct response is received, it can be determined that there is sensor access. Generally, the terminal will periodically send query messages through each interface to detect whether there is sensor access, that is, it can detect whether there is sensor access by periodically polling each interface.

For example, as shown in Figure 1, when performing sensor access detection, the terminal can send a query message for each interface. If it receives a sensor response, it can determine that there is a sensor access; if it does not receive a sensor response, it can Delay for a period of time, and continue to send query messages to detect whether there is a sensor access.

The current scheme that the terminal regularly polls the interface to detect whether a sensor is connected needs to be set for the timing duration. If the set timing is too long, the terminal cannot detect the connected sensor in time, resulting in poor timeliness of sensor connection detection. However, if the set timing duration is too short, the terminal will poll frequently, the power consumption of the terminal is high, and more system resources will be occupied, resulting in a waste of system resources. For example, assuming that the terminal has 10 interfaces, the 10 interfaces must be polled every once in a while. If the polling is frequent, it will lead to a large consumption of terminal power and a waste of system resources.

Contents of the invention

Embodiments of the present invention provide a sensor access detection method, device and system, which are used to ensure the real-time performance of sensor access detection and reduce power consumption and system resources consumed by detection.

A sensor access detection method, the method comprising:

The terminal receives the connection request sent by the sensor according to the sensor communication protocol;

The terminal determines that the sensor is successfully connected according to the received connection request.

A sensor access detection method, the method comprising:

The sensor determines that it has performed a reset operation;

The sensor sends the connection request to the terminal according to the sensor communication protocol, and instructs the terminal to determine that the sensor is connected successfully according to the connection request.

A sensor access detection system, the system includes a sensor and a terminal, wherein:

The sensor is configured to determine that it has performed a reset operation, and send the connection request to the terminal according to the sensor communication protocol;

The terminal is configured to receive a connection request sent by the sensor, and determine that the sensor is successfully connected according to the received connection request.

A sensor access detection device, the device comprising:

The receiving unit is used to receive the connection request sent by the sensor according to the sensor communication protocol;

A detecting unit, configured to determine that the sensor is successfully connected according to the received connection request.

A sensor access detection device, the device comprising:

a determining unit, configured to determine that the sensor has performed a reset operation;

The sending unit is configured to send the connection request to the terminal according to the sensor communication protocol, and instruct the terminal to determine that the sensor is connected successfully according to the connection request.

According to the solution provided by the embodiment of the present invention, in the prior art, the terminal periodically sends query requests to detect whether there is sensor access, and the real-time performance of the existing sensor access detection is difficult to be guaranteed, and the detection consumes a lot of power and occupies a lot of system resources. The present invention proposes that the sensor can actively send a connection request to the terminal through the sensor communication protocol, and the terminal can judge the successful connection of the sensor through the received connection request, thereby avoiding the timing time when the terminal detects whether there is a sensor connection. If the time is too long, it will be difficult to guarantee the real-time performance of the sensor access detection, and if the time is too short, the detection will consume a lot of power and occupy too many system resources.

Description of drawings

FIG. 1 is a schematic diagram of sensor access detection provided by the prior art;

FIG. 2 is a flow chart of the steps of the sensor access detection method provided by Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a frame structure provided by Embodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a sensor access detection device provided by Embodiment 2 of the present invention;

FIG. 5 is a flow chart of the steps of the sensor access detection method provided by Embodiment 3 of the present invention;

FIG. 6 is a schematic structural diagram of a sensor access detection device provided in Embodiment 4 of the present invention;

FIG. 7 is a flow chart of the steps of the sensor access detection method provided by Embodiment 5 of the present invention;

FIG. 8 is a schematic structural diagram of a sensor access detection system provided by Embodiment 6 of the present invention.

Detailed ways

Aiming at the problem in the prior art that the terminal regularly sends a query request to detect whether there is sensor access, and the length of the existing timing is difficult to determine, the embodiment of the present invention proposes that the sensor can actively send a connection request to the terminal through the sensor communication protocol, so that the terminal The side can determine that there is sensor access according to the received connection request, so as to solve the problems of poor timeliness and high power consumption in sensor access detection in the prior art.

The solutions of the present invention will be described below in conjunction with the accompanying drawings and various embodiments.

Embodiment one,

Embodiment 1 of the present invention provides a sensor access detection method. In this embodiment, before sensor access detection, a physical connection needs to be established between the sensor and the terminal. It can be understood as inserting the sensor into the specified interface of the terminal. And in this embodiment, the sensor access detection may be triggered by the reset operation of the sensor. Specifically, sensor reset may not be limited to reset after power-on, and may also be reset in other situations, that is, it can be understood that sensor access detection will be triggered when the sensor is started for the first time and every time it is restarted. The steps of the method can be shown in Figure 2, including:

Step 101, the terminal receives a connection request sent by a sensor.

In this embodiment, the reset operation of the sensor triggers the sensor to send a connection request to the terminal. In this step, the sensor may send a connection request to the terminal through a sensor communication protocol, and notify the terminal that there is sensor access.

In the sensor communication protocol, a frame structure that has nothing to do with the underlying communication is defined, and the structure of the protocol data unit (PDU) data field in the frame structure is specifically defined. The frame structure can be shown in Figure 3. The frame structure can include a boot code field and a version number field (its value represents the protocol version number. For example, the value 0 is reserved and not used temporarily, the value 1 represents the protocol version number 1.0, and the value 2 represents the protocol version number 1.1. A value of 10 indicates the protocol version number 1.9, a value of 11 indicates the protocol version number 2.0), the sensor address field (the sensor address in this field can be represented by the sensor identification (ID)), the PDU length field (the value of this field indicates the PDU data length, this value can be 0), the first checksum field (the value of this field indicates the checksum determined by the first algorithm for the content of the frame structure), the PDU data field (when the PDU length field When the value is 0, this field may not exist) and the second checksum field (the value of this field indicates the checksum determined by the second algorithm for the content of the frame structure, and when the PDU length field When the value is 0, this field may not exist). The PDU data field further includes a function code field and a function data unit (FDU) data field.

In this embodiment, the frame structure shown in FIG. 3 can be used to realize the communication between the terminal and the sensor. In addition, the length and value range of each field in the frame structure adopted in this embodiment may be as shown in Table 1. The length and value range of each field further included in the PDU data field of the frame structure may be shown in Table 2.

Table 1

field length (bytes) Ranges function code 2 Defined function codes FDU data variable 0~65533

Table 2

Specifically, in this step, the sensor can use the frame structure shown in FIG. 3 to indicate the connection request, and can define the frame structure with the function code field value as the first specified value, such as 0xF101, as the connection request. When the frame structure represents a connection request, the FDU data field can be empty.

Step 102, the terminal checks the legitimacy of the connection request.

This step is a preferred step. The terminal may directly execute step 103 when receiving the connection request sent by the sensor. Preferably, the terminal may perform step 103 after confirming that the received connection request is legal through this step, and of course, if the terminal confirms that the received connection request is not legal, then this process may end.

If in step 101, the sensor uses the frame structure shown in Figure 3 to send a connection request, then in this step, the legitimacy of the connection request can be determined through the first checksum and the second checksum:

Specifically, the checksum carried in the first checksum field in the received frame structure representing the connection request may be verified to be consistent with the value determined according to the content of the received frame structure by using the first algorithm;

and/or verify that the checksum carried in the second checksum field in the received frame structure representing the connection request is consistent with the value determined based on the received content of the frame structure using the second algorithm, determine The connection request received is legitimate.

Step 103, the terminal determines that the sensor is connected successfully.

In this step, the terminal may directly determine that the sensor is connected successfully when receiving the connection request sent by the sensor, so as to complete the sensor connection detection, or it may determine that the sensor connection is successful after passing the verification of the connection request. The connection is successful, so that when a data transmission error occurs during the communication between the sensor and the terminal, the legitimacy of the connection request can be checked to ensure that only the sensor that sends a legal connection request can successfully access the terminal, improving sensor access detection. accuracy.

Step 104, the terminal sends a verification result reception request to the sensor.

Further, after the terminal determines that the sensor is successfully connected, the terminal may also feed back information to the sensor, notifying the sensor that the terminal is successfully connected, and subsequent data communication may be performed.

In this embodiment, the communication between the terminal and the sensor can be implemented according to the sensor communication protocol, such as using the frame structure shown in FIG. 3 . Therefore, in this step, the terminal can also use the frame structure shown in Figure 3 to indicate the verification result reception request, and can define the frame structure as the verification result reception request with the function code field value as the fourth designated value, such as 0xF104. When the frame structure indicates the request for receiving the verification result, the FDU data field can be used to carry the information indicating that the sensor access is successful.

Of course, after the sensor receives the verification result receiving request, it can verify the legitimacy of the received verification result receiving request as the terminal receives the connection request, and when the verification determines that the received verification result receiving request is legal, Judging whether the access terminal succeeds in receiving the request according to the received verification result. So that when a data transmission error occurs during the communication process between the sensor and the terminal, the legitimacy of the verification result receiving request can be checked to ensure that the sensor can judge whether it has successfully connected to the terminal according to the legal verification result receiving request, and improve the sensor side. Accuracy of sensor access detection.

When using the frame structure to represent the verification result to receive the request, the verification method is similar to the verification method for the terminal to receive the connection request represented by the frame structure. Specifically, it may include:

verifying that the checksum carried in the first checksum field in the received frame structure representing the verification result acceptance request is consistent with the value determined based on the content of the received frame structure using the first algorithm; and/or Verifying that the checksum carried in the second checksum field in the received frame structure representing the verification result reception request is consistent with the value determined according to the content of the received frame structure by using the second algorithm.

Furthermore, after step 101 and before step 103, this embodiment may further include the following steps to realize the terminal's reading of sensor attribute information and legality judgment, to ensure that only legal sensors can access the terminal, so as to further Improve the accuracy of sensor access detection:

Step 101', the terminal sends a request to read attributes to the sensor.

In this step, the terminal can send a read attribute request to the sensor according to the sensor communication protocol, and the read attribute request is used to request to read the attribute information of the sensor, so that further judgment can be made based on the attribute information of the sensor The legality of the sensor, and according to the legality judgment result of the sensor, determine whether the sensor can be allowed to access. The terminal can also use the frame structure shown in FIG. 3 to represent the read attribute request, and can define the function code field value as the second specified value, such as the frame structure of 0xF102, as the read attribute request. The FDU data field may be empty when the frame structure represents a read attribute request.

Step 101", the terminal receives the attribute receiving request sent by the sensor.

After receiving the attribute read request sent by the terminal, the sensor may send an attribute receiving request to the terminal according to the sensor communication protocol, and the attribute receiving request carries attribute information of the sensor.

The sensor can also use the frame structure shown in Figure 3 to indicate the attribute receiving request, and can define the function code field value as the third designated value, such as the frame structure of 0xF103, as the attribute receiving request. When the frame structure indicates an attribute receiving request, the FDU data field may carry attribute information of the sensor. Specifically, the attribute information of the sensor can be expressed in TLV mode, T is the type of the attribute information (it can be 2 bytes, and the type can include basic attributes and extended attributes), and L is the length of the attribute information (it can be 2 bytes bytes), and V is the value of the attribute information (can be L bytes). When the type of attribute information is basic attribute, the value of the attribute information can represent related information such as sensor name, product serial number, manufacturer name, and the number of probes (channels) of the integrated sensor. Wherein when the type of the attribute information is an extended attribute, the value of the attribute information may represent a channel number, a channel name, a channel range and a unit.

Preferably, after the sensor receives the read attribute request, it can also verify the legitimacy of the received read attribute request as the terminal receives the connection request, and can determine the received read attribute request When legal, send an attribute reception request to the terminal according to the received attribute read request. When a data transmission error occurs during the communication between the sensor and the terminal, the legitimacy of the read attribute request can be checked to ensure that the sensor can feed back attribute information to the terminal according to the legal read attribute request, and improve sensor access detection. accuracy.

When using the frame structure to express the request to read attributes, the verification method is similar to the verification method when the terminal receives the connection request represented by the frame structure. Specifically, it may include:

Verify that the checksum carried in the first checksum field in the received frame structure representing the read attribute request is consistent with the value determined based on the content of the received frame structure using the first algorithm; and/or Verifying that the checksum carried in the second checksum field in the received frame structure representing the read attribute request is consistent with the value determined according to the content of the received frame structure by using the second algorithm.

When steps 101'~step 101" are performed, step 103 may specifically include:

Verifying the validity of the attribute information, and determining that the sensor is a legal sensor and the access is successful when the attribute information is determined to be legal.

That is, in this step, the terminal may verify the legality of the attribute information carried in the received attribute receiving request. Specifically, the terminal may compare the received attribute information with its own pre-configured attribute information, and may determine that the received attribute information is legal when it is determined that the received attribute information belongs to its own pre-configured attribute information; The attribute information received is illegal.

Preferably, after receiving the attribute receiving request, the terminal may also verify the validity of the received attribute receiving request as if the terminal received the connection request, and when the verification determines that the received attribute receiving request is legal, Verify the legitimacy of the attribute information according to the received attribute receiving request. When a data transmission error occurs during the communication between the sensor and the terminal, the legitimacy of the attribute receiving request can be verified to ensure that the terminal can judge the legitimacy of the sensor according to the legal attribute receiving request, and improve the accuracy of sensor access detection sex.

When using the frame structure to indicate the attribute to receive the request, the verification method is similar to the verification method for the terminal to receive the connection request represented by the frame structure. Specifically, it may include:

Verify that the checksum carried in the first checksum field in the received frame structure representing the attribute reception request is consistent with the value determined based on the received content of the frame structure using the first algorithm; and/or check Verify that the checksum carried in the second checksum field in the received frame structure representing the attribute receiving request is consistent with the value determined according to the content of the received frame structure by using the second algorithm.

When steps 101' to 101" are executed, the verification result receiving request sent in step 104 may carry the validity verification result for the attribute information. Specifically, the information carried in the FDU data field represents the attribute When the legitimacy check result of the information is legal, it can indicate that the sensor access is successful, otherwise, it means that the sensor access fails. That is, the sensor can determine whether the access to the terminal is successful or failed according to the legitimacy check result of the attribute information Specifically, when it is determined that the validity check result of the attribute information is valid, it is determined that the access to the terminal is successful; otherwise, it is determined that the access to the terminal fails.

After the terminal sends a verification result reception request to the sensor, and notifies the sensor that the terminal is successfully connected, that is, after step 104, the terminal can be further used to realize the management of the sensor by the IoT operation management platform. Specifically, the terminal sends the registration request of the sensor to the Internet of Things operation management platform, and the operation management platform saves the registration information of the sensor and returns successful registration information to the terminal, completing the sensor registration process. Further, the operation management platform sends a sensor information collection request (such as the online status of the sensor, etc.) to the terminal. After receiving the request from the operation management platform, the terminal sends an information collection request to the sensor. The sensor sends status information and the like to the terminal. The terminal forwards the relevant information of the sensor to the operation management platform to realize the remote management of the sensor by the operation management platform.

Based on the same inventive concept as Embodiment 1 of the present invention, the following devices, methods and systems are provided.

Embodiment two,

Embodiment 2 of the present invention provides a sensor access detection device, which can be integrated into a terminal. The structure of the device can be shown in Figure 4, including:

The receiving unit 11 is used to receive the connection request sent by the sensor according to the sensor communication protocol; the detection unit 12 is used to determine that the sensor is connected successfully according to the received connection request.

The device may also include a sending unit 13:

The sending unit 13 is configured to send a read attribute request to the sensor according to the sensor communication protocol, and the read attribute request is used to request to read the attribute information of the sensor;

The receiving unit 11 is also used to receive the attribute receiving request sent by the sensor according to the sensor communication protocol, and the attribute receiving request carries the attribute information of the sensor;

The detection unit 12 is specifically configured to verify the legality of the attribute information received by the receiving unit 11, and when determining that the attribute information is legal, determine that the sensor is a legal sensor and the access is successful.

The device may also include a notification unit 14:

The notification unit 14 is configured to send a verification result reception request to the sensor according to the sensor communication protocol, and the verification result reception request carries a legality verification result for the attribute information.

The device can also include a verification unit 15:

The verification unit 15 is used to verify that the checksum carried by the first checksum field in the received frame structure representing the connection request is consistent with the value determined according to the content of the received frame structure using the first algorithm and/or verify that the checksum carried in the second checksum field in the received frame structure representing the connection request is consistent with the value determined according to the content of the received frame structure by using the second algorithm.

The check unit 15 can also be used to check the checksum carried in the first checksum field in the received frame structure representing the attribute receiving request, and use the first algorithm to determine the checksum according to the content of the received frame structure. and/or verify that the checksum carried in the second checksum field in the received frame structure representing the attribute reception request is the same as the checksum determined based on the content of the received frame structure using the second algorithm The values agree.

Based on the device provided in the second embodiment of the present invention, the process of performing sensor access detection on the terminal side is described through the third embodiment.

Embodiment three,

Embodiment 3 of the present invention provides a sensor access detection method, which is applied to a terminal side, and the terminal may include a central processing unit (CPU), an interface chip, and a power supply. It can be understood that the functions of the detection unit and the verification unit in the device provided by the second embodiment are implemented by the CPU, and the functions of other units that communicate with the sensor (including the receiving unit, the sending unit, and the notification unit) are implemented by the interface chip, and the terminal uses The interface chip realizes the communication with the sensor. The steps of the method can be shown in Figure 5, including:

Step 201, the CPU determines that the interface chip generates an interrupt.

In this embodiment, when the interface chip receives the data sent by the sensor, the data may be a connection request or an attribute reception request, and a hardware interrupt is generated, thereby triggering the CPU to perform corresponding operations.

Step 202, the CPU performs data processing.

In this step, the CPU can perform corresponding processing according to the data received by the interface chip. Specifically, if the sensor and the terminal communicate according to the frame structure shown in Figure 3 in Embodiment 1, then in this step, The CPU can identify the message type represented by the frame structure according to the meaning represented by the predefined function code, so as to perform further processing. For example, it may be determined that the received data is a connection request according to that the function code in the received frame structure is in the first designated format. For another example, the received data may be determined to be an attribute reception request according to the third designated format of the function code in the received frame structure, and then the validity of the attribute information carried in the attribute reception request may be further checked.

Further, the CPU can trigger the interface chip to send data to the sensor. For example, after it is determined that the connection request is received and the sensor is successfully connected, the interface chip can be triggered to send a verification result reception request to the sensor, and the sensor can be notified of the success of the terminal access, or after the connection request is confirmed to be received, the interface chip can be triggered to send a verification result request to the sensor. Read the attribute request to further verify the legitimacy of the sensor, so as to determine whether the sensor access is successful. As another example, after it is determined that the attribute receiving request is received and the validity of the attribute information carried in the attribute receiving request is verified, it is determined that the sensor is connected successfully, and the interface chip is triggered to send a verification result receiving request to the sensor to notify the sensor of accessing Terminal succeeds.

Step 203, the CPU judges whether the access detection is completed.

In this step, the CPU may determine whether the sensor access detection is completed according to a predefined sensor access detection process. For example, it may be predefined that after the interface chip sends a verification result reception request to the sensor, the access detection is completed. And when it is judged that the interface chip has not sent a verification result receiving request to the sensor, and the access detection is not completed, continue to wait for the interruption of the interface chip, otherwise, this process can be ended.

After step 201, before step 202, step 202' can also be further included:

Step 202', the CPU performs a legality check.

Before the CPU processes the data received by the interface chip, it can also check the validity of the data received by the interface chip. And when the legality check is passed, data processing is performed. Otherwise, it can wait for the interrupt of the interface chip again.

If the sensor and the terminal communicate according to the frame structure shown in Figure 3 in Embodiment 1, then in this step, the checksum carried in the first checksum field in the received frame structure can be checked, and the The first algorithm, whether the value determined according to the received content of the frame structure is consistent, and the value of the first checksum field can be consistent with the value determined according to the received content of the frame structure using the first algorithm , it is determined that the validity check is passed.

Alternatively, it is also possible to check whether the checksum carried by the second checksum field in the received frame structure is consistent with the value determined based on the content of the received frame structure using the second algorithm, and can be When the value of the second checksum field is consistent with the value determined according to the content of the received frame structure by using the second algorithm, it is determined that the validity check is passed.

Embodiment four,

Embodiment 4 of the present invention provides a sensor access detection device, the device can be integrated in the sensor, the structure of the device can be shown in Figure 6, including:

The determining unit 21 is configured to determine that the sensor has performed a reset operation; the sending unit 22 is configured to send the connection request to the terminal according to the sensor communication protocol, and instruct the terminal to determine that the sensor is connected successfully according to the connection request.

The device may also include a receiving unit 23:

The receiving unit 23 is configured to receive the read attribute request sent by the terminal according to the sensor communication protocol, and the read attribute request is used to request to read the attribute information of the sensor;

The sending unit 22 is further configured to send an attribute receiving request to the terminal according to the sensor communication protocol, and the attribute receiving request carries attribute information of the sensor;

The receiving unit 23 is also configured to receive the verification result reception request sent by the terminal according to the sensor communication protocol, the verification result reception request carries the legality verification result for the attribute information, and according to the legality of the attribute information Check the result to determine whether the access to the terminal succeeds or fails.

The device may also include a checking unit 24:

The checking unit 24 is used to check the received checksum carried in the first checksum field in the frame structure representing the read attribute request, and the checksum determined according to the content of the received frame structure using the first algorithm. The values are consistent; and/or verify that the checksum carried in the second checksum field in the received frame structure representing the read attribute request is the same as the checksum determined based on the content of the received frame structure using the second algorithm The values agree.

The check unit 24 can also be used to check the checksum carried in the first checksum field in the received frame structure representing the verification result reception request, and use the first algorithm to determine according to the content of the received frame structure and/or verify that the checksum carried in the second checksum field in the received frame structure representing the verification result acceptance request is the same as that determined according to the content of the received frame structure using the second algorithm The values are consistent.

Based on the device provided in the fourth embodiment of the present invention, the process of sensor access detection on the sensor side is described through the fifth embodiment.

Embodiment five,

Embodiment 5 of the present invention provides a sensor access detection method, the step flow of the method can be shown in Figure 7, including:

Step 301, the sensor is powered on and reset.

In this embodiment, the access detection is triggered when the sensor is started for the first time after establishing a physical connection with the terminal as an example.

Step 302, the sensor sends a connection request.

In this step, the data sent by the sensor to the terminal may be a connection request, and the terminal is notified to connect the sensor.

Step 303, the sensor receives data.

In this embodiment, after the sensor sends data to the terminal, the data sent by the terminal may also be received, and the data may be a request for reading an attribute, or a request for receiving a verification result. In the following step, the sensor receives the verification result receiving request as an example for description.

Preferably, in this step, the timing duration can be set, and when the timing duration arrives and no response from the terminal is received, it is determined that the access terminal has failed, and when the first delay duration arrives, the terminal can be re-reported. Send a connection request to initiate access to the terminal. For example, after the connection request is sent to the terminal, if the request for receiving the verification result sent by the terminal is not received within the set time length T1, the delay time can be T2 (the arrival time of the set time length T1 can be set as the time T2). When the start time) arrives, resend the connection request to the terminal.

Step 304, the sensor checks the validity of the received data.

In this step, the sensor can verify the validity of the received data. And when the legality check is passed, data processing is performed. Otherwise, it can be considered that the access terminal has failed, and the connection request is resent.

Of course, when the connection request needs to be resent, the connection request can be resent to the terminal when the set second delay time arrives, and an access is initiated to the terminal.

Step 305, the sensor processes the received data.

Specifically, if the sensor and the terminal communicate according to the frame structure shown in FIG. 3 in the first embodiment, corresponding processing can be performed according to the meaning indicated by the predefined function code.

For example, according to the function code in the received frame structure as the fourth specified format, it is determined that the received data is a verification result reception request, then the request can be received according to the received verification result, and by identifying the information carried in the FDU field, you can determine yourself Whether the access terminal is successful, and end this process.

Embodiment six,

Embodiment 6 of the present invention provides a sensor access detection system. The structure of the system can be shown in FIG. 8, including a sensor 31 and a terminal 32, wherein:

The sensor 31 is used to determine that it has performed a reset operation, and sends the connection request to the terminal according to the sensor communication protocol; the terminal 32 is used to receive the connection request sent by the sensor, and according to the received connection request, It is determined that the sensor is connected successfully.

The terminal 32 is also configured to send a read attribute request to the sensor according to the sensor communication protocol, the read attribute request is used to request to read the attribute information of the sensor, and receive the attribute receiving request sent by the sensor, so The attribute information of the sensor is carried in the attribute receiving request, and is specifically used to verify the validity of the attribute information, and when the attribute information is determined to be legal, it is determined that the sensor is a legal sensor, and the access success;

The sensor 31 is also configured to receive the attribute read request sent by the terminal, and send an attribute receiving request to the terminal according to the sensor communication protocol.

The terminal 32 is further configured to send a verification result reception request to the sensor according to the sensor communication protocol, and the verification result reception request carries a legality verification result for the attribute information;

The sensor 31 is further configured to receive the request for receiving the verification result, and determine whether the access to the terminal succeeds or fails according to the validity verification result of the attribute information.

In the process of communication between the system terminal and the sensor, the attribute reading request, the verification result receiving request, the connection request and the attribute receiving request adopt a unified frame structure;

The frame structure includes a boot code field, a version number field, a sensor address field, a protocol data unit PDU length field, a first checksum field, a protocol data unit data field and a second checksum field; the protocol data unit data field The field includes a function code field and a function data unit FDU data field;

Wherein, the first checksum field carries the checksum determined by using the first algorithm for the content of the frame structure; the second checksum field carries the checksum determined by the second algorithm for the content of the frame structure checksum.

Moreover, when using a unified frame structure to represent the read attribute request, the verification result reception request, the connection request and the property reception request, the connection request can be represented by the frame structure carrying the first specified value in the function code field; using the function The frame structure with the second specified value in the code field indicates a request to read the attribute; the frame structure with the third specified value in the function code field indicates an attribute reception request, and the content of the FDU data field of the frame structure is an attribute Information; using the frame structure carrying the fourth specified value in the function code field to indicate a verification result receiving request.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and combinations of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a Means for realizing the functions specified in one or more steps of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (29)

1. a transducer access detection method, is characterized in that, described method comprises:

The connection request that terminal sends according to the sensor communication protocol receiving sensor;

Terminal, according to the described connection request received, determines that described transducer accesses successfully.

2. the method for claim 1, is characterized in that, after the connection request that terminal sends according to the sensor communication protocol receiving sensor, terminal is according to the described connection request received, and before determining that described transducer accesses successfully, described method also comprises:

Terminal sends the reading attributes request according to sensor communication protocol to described transducer, and the attribute information of described transducer is read in described reading attributes request for request;

Terminal receives according to sensor communication protocol the attribute reception request that described transducer sends, and described attribute receives the attribute information that carries described transducer in request;

Terminal, according to the described connection request received, determines that described transducer accesses successfully, specifically comprises:

The legitimacy of the described attribute information of terminal verification, and, when definite described attribute information is legal, determines that described transducer is legal transducer, and access successfully.

3. method as claimed in claim 2, is characterized in that, terminal is according to the described connection request received, and after determining that described transducer accesses successfully, described method also comprises:

Terminal sends the result according to sensor communication protocol to described transducer and receives request, and described the result receives in request and carries the legitimacy check results for described attribute information.

4. method as claimed in claim 3, is characterized in that, the reading attributes request, and the result receives request, and connection request and attribute receive request and adopt unified frame structure;

Described frame structure comprises guidance code field, version number field, sensor address field, protocol Data Unit PDU length field, the first checksum field, protocol Data Unit data field and the second checksum field;

Described protocol Data Unit data field comprises function code field and performance data unit F DU data field;

Wherein, the first checksum field is carried the content for described frame structure, adopt verification that the first algorithm determines and;

The second checksum field is carried the content for described frame structure, adopt verification that the second algorithm determines and.

5. method as claimed in claim 4, is characterized in that, the frame structure that described function code field is carried the first appointment numerical value means connection request;

The frame structure that described function code field is carried the second appointment numerical value means the reading attributes request;

Described function code field is carried the 3rd and is specified the frame structure of numerical value to mean that attribute receives request, and the performance data unit F DU data field content of described frame structure is attribute information;

Described function code field is carried the 4th and is specified the frame structure of numerical value to mean that the result receives request.

6. method as described as claim 4 or 5, it is characterized in that, after the connection request that terminal sends according to the sensor communication protocol receiving sensor, terminal is according to the described connection request received, before determining that described transducer accesses successfully, described method also comprises:

The verification that in the frame structure of the expression connection request that the terminal verification receives, the first checksum field is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent;

And/or the verification that in the frame structure of the expression connection request that receives of verification, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

7. method as described as claim 4 or 5, it is characterized in that, after terminal receives the attribute reception request of described transducer according to the sensor communication protocol transmission, terminal is according to the described connection request received, before determining that described transducer accesses successfully, described method also comprises:

Expression attribute that the terminal verification receives receive verification that in the frame structure of request, the first checksum field is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent;

And/or the expression attribute that receives of verification receive verification that in the frame structure of request, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

8. a transducer access detection method, is characterized in that, described method comprises:

Transducer is determined and self has been carried out reset operation;

Transducer sends described connection request according to sensor communication protocol to terminal, and indicating terminal determines that according to described connection request transducer accesses successfully.

9. method as claimed in claim 8, is characterized in that, transducer is according to sensor communication protocol after terminal sends connection request, and described method also comprises:

Transducer receives according to sensor communication protocol the reading attributes request that described terminal sends, and described reading attributes request is for asking the attribute information of read sensor;

Transducer sends attribute according to sensor communication protocol to described terminal and receives request, and described attribute receives the attribute information that carries transducer in request.

10. method as claimed in claim 9, is characterized in that, transducer is according to sensor communication protocol after described terminal sends attribute reception request, and described method also comprises:

Transducer receives according to sensor communication protocol the result reception request that described terminal sends, and described the result receives in request and carries the legitimacy check results for described attribute information;

Transducer, according to the legitimacy check results of described attribute information, is determined the described terminal success of access or failure.

11. method as claimed in claim 10, is characterized in that, the reading attributes request, and the result receives request, and connection request and attribute receive request and adopt unified frame structure;

Described frame structure comprises guidance code field, version number field, sensor address field, protocol Data Unit PDU length field, the first checksum field, protocol Data Unit data field and the second checksum field;

Described protocol Data Unit data field comprises function code field and performance data unit F DU data field;

Wherein, the first checksum field is carried the content for described frame structure, adopt verification that the first algorithm determines and;

The second checksum field is carried the content for described frame structure, adopt verification that the second algorithm determines and.

12. method as claimed in claim 11, is characterized in that, the frame structure that described function code field is carried the first appointment numerical value means connection request;

The frame structure that described function code field is carried the second appointment numerical value means the reading attributes request;

Described function code field is carried the 3rd and is specified the frame structure of numerical value to mean that attribute receives request, and the performance data unit F DU data field content of described frame structure is attribute information;

Described function code field is carried the 4th and is specified the frame structure of numerical value to mean that the result receives request.

13. method as described as claim 11 or 12, it is characterized in that, after transducer receives the reading attributes request of described terminal transmission according to sensor communication protocol, before transducer sends attribute reception request according to sensor communication protocol to described terminal, described method also comprises:

The verification that in the frame structure of the expression reading attributes request that sensor calibration receives, the first checksum field is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent;

And/or the verification that in the frame structure of the expression reading attributes request that receives of verification, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

14. method as described as claim 11 or 12, it is characterized in that, after transducer receives the result reception request of described terminal transmission according to sensor communication protocol, transducer is according to the legitimacy check results of described attribute information, before determining the described terminal success of access or failure, described method also comprises:

Expression the result that sensor calibration receives receive verification that in the frame structure of request, the first checksum field is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent;

And/or the expression the result that receives of verification receive verification that in the frame structure of request, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

15. a transducer access testing system is characterized in that described system comprises transducer and terminal, wherein:

Described transducer, self carried out reset operation for determining, according to sensor communication protocol, to terminal, sends described connection request;

Described terminal, the connection request sent for receiving described transducer, and, according to the described connection request received, determine that described transducer accesses successfully.

16. system as claimed in claim 15, is characterized in that,

Described terminal, also for according to sensor communication protocol, to described transducer, sending the reading attributes request, the attribute information of described transducer is read in described reading attributes request for request, receive the attribute reception request that described transducer sends, described attribute receives the attribute information that carries described transducer in request, and specifically for the legitimacy of the described attribute information of verification, and when definite described attribute information is legal, determine that described transducer is legal transducer, and access successfully;

Described transducer, the reading attributes request also sent for receiving terminal, and send attribute reception request according to sensor communication protocol to described terminal.

17. system as claimed in claim 16, is characterized in that,

Described terminal, also receive request for according to sensor communication protocol, to described transducer, sending the result, and described the result receives in request and carries the legitimacy check results for described attribute information;

Described transducer, also receive request for receiving described the result, according to the legitimacy check results of described attribute information, determines the described terminal success of access or failure.

18. system as claimed in claim 17, is characterized in that, the reading attributes request, and the result receives request, and connection request and attribute receive request and adopt unified frame structure;

Described frame structure comprises guidance code field, version number field, sensor address field, protocol Data Unit PDU length field, the first checksum field, protocol Data Unit data field and the second checksum field;

Described protocol Data Unit data field comprises function code field and performance data unit F DU data field;

Wherein, the first checksum field is carried the content for described frame structure, adopt verification that the first algorithm determines and;

The second checksum field is carried the content for described frame structure, adopt verification that the second algorithm determines and.

19. system as claimed in claim 18, is characterized in that, the frame structure that described function code field is carried the first appointment numerical value means connection request;

The frame structure that described function code field is carried the second appointment numerical value means the reading attributes request;

Described function code field is carried the 3rd and is specified the frame structure of numerical value to mean that attribute receives request, and the performance data unit F DU data field content of described frame structure is attribute information;

Described function code field is carried the 4th and is specified the frame structure of numerical value to mean that the result receives request.

20. a transducer access checkout gear, is characterized in that, described device comprises:

Receiving element, for the connection request sent according to the sensor communication protocol receiving sensor;

Detecting unit, for the described connection request according to receiving, determine that described transducer accesses successfully.

21. device as claimed in claim 20, is characterized in that, described device also comprises:

Transmitting element, for according to sensor communication protocol, to described transducer, sending the reading attributes request, the attribute information of described transducer is read in described reading attributes request for request;

Described receiving element, the attribute reception request also sent according to sensor communication protocol for receiving described transducer, described attribute receives the attribute information that carries described transducer in request;

Described detecting unit, the legitimacy of the described attribute information received specifically for the verification receiving element, and, when definite described attribute information is legal, determines that described transducer is legal transducer, and access successfully.

22. device as claimed in claim 21, is characterized in that, described device also comprises:

Notification unit, receive request for according to sensor communication protocol, to described transducer, sending the result, and described the result receives in request and carries the legitimacy check results for described attribute information.

23. device as claimed in claim 22, is characterized in that, described device also comprises:

Verification unit, the verification that frame structure first checksum field of the expression connection request received for verification is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent; And/or the verification that in the frame structure of the expression connection request that receives of verification, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

24. device as claimed in claim 22, is characterized in that, described device also comprises:

Verification unit, the expression attribute received for verification receive verification that frame structure first checksum field of request carries and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent; And/or the expression attribute that receives of verification receive verification that in the frame structure of request, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

25. a transducer access checkout gear, is characterized in that, described device comprises:

Determining unit, carried out reset operation for determining transducer;

Transmitting element, for according to sensor communication protocol, to terminal, sending described connection request, indicating terminal determines that according to described connection request transducer accesses successfully.

26. device as claimed in claim 25, is characterized in that, described device also comprises:

Receiving element, the reading attributes request sent for receive described terminal according to sensor communication protocol, described reading attributes request is for asking the attribute information of read sensor;

Described transmitting element, also receive request for according to sensor communication protocol, to described terminal, sending attribute, and described attribute receives the attribute information that carries transducer in request.

27. device as claimed in claim 26, it is characterized in that, described receiving element, the result reception request also sent for receive described terminal according to sensor communication protocol, described the result receives in request and carries the legitimacy check results for described attribute information, according to the legitimacy check results of described attribute information, determine the described terminal success of access or failure.

28. device as claimed in claim 27, is characterized in that, described device also comprises:

Verification unit, the verification that frame structure first checksum field of the expression reading attributes request received for verification is carried and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent; And/or the verification that in the frame structure of the expression reading attributes request that receives of verification, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

29. device as claimed in claim 27, is characterized in that, described device also comprises:

Verification unit, the expression the result received for verification receive verification that frame structure first checksum field of request carries and, and utilize the first algorithm, the numerical value of determining according to the content of this frame structure received is consistent; And/or the expression the result that receives of verification receive verification that in the frame structure of request, the second checksum field is carried and, and utilize the second algorithm, the numerical value of determining according to the content of this frame structure received is consistent.

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