CN113973069B - ETC detection method and system for binding vehicle self-detection through Bluetooth anti-interference - Google Patents
ETC detection method and system for binding vehicle self-detection through Bluetooth anti-interference Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
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- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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Abstract
The invention provides an ETC detection method for binding vehicle self-detection through Bluetooth anti-interference, which comprises the steps of obtaining an automobile VIN code and transmitting the automobile VIN code to an RSU; establishing a link connection between the RSU and the ETC, and carrying out information interaction to obtain a Bluetooth MAC address; and the RSU performs Bluetooth pairing detection according to the acquired Bluetooth MAC address. According to the invention, by acquiring the unique VIN code of the automobile, the RSU automatically issues the instruction of writing the frame number to the ETC, so that the one-to-one correspondence between the automobile and the ETC can be realized, and the VIN code anti-dismantling function is realized; the RSU acquires the MAC address of the ETC Bluetooth through the 5.8G channel, the address is used for comparing with the address of the detected Bluetooth module later, and the Bluetooth module is informed to detect if the address is consistent with the address of the detected Bluetooth module, so that the interference generated by other Bluetooth modules in the production line when sending information is avoided, and the stability and accuracy of detection are ensured; the whole detection flow only needs to scan VIN codes manually, other flows can be completed automatically, manual operation is greatly reduced, the accuracy of detection results is improved, the production cost is reduced, and the production line efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of automobile production line detection, and particularly relates to an ETC detection method and system for binding vehicle self-detection through Bluetooth anti-interference.
Background
Currently, the front-loading ETC and the automatic binding of the vehicle can input the vehicle frame number into the ETC by a manual input method, or the ETC is directly not bound with the vehicle.
The bluetooth function detection can be through manual selection to detect bluetooth name, after the RSU received bluetooth information pair success, issues the instruction of detecting bluetooth module, and the ETC carries out bluetooth module function detection.
During offline detection, the self-checking scheme of the optional ETC mainly comprises the following steps:
1. the ETC automatically enters self-checking after being electrified, and the ETC enters self-checking once after being electrified again each time;
2. starting self-checking after being pressed by a physical key;
3. ETC supporting CAN communication CAN enable ETC to enter self-checking through linkage with other ECUs on the vehicle, for example, an ETC self-checking command is issued by a central control screen switch.
However, the above method also has the following drawbacks:
1. The vehicle frame number is input into the ETC by a manual input method, the manual input of the frame number is needed, the production line efficiency is low, the labor cost is high, and the input accuracy cannot be guaranteed;
2. the ETC is not bound with the vehicle information, so that when the subsequent ETC has problems, the vehicle information is inconvenient to position, and the VIN code anti-disassembly is inconvenient to realize;
3. The bluetooth name to be detected is manually selected for bluetooth pairing, so that the method has two problems, namely that manual operation is needed, and the production efficiency of the production line is affected to a certain extent; another problem is that a plurality of bluetooth modules may be opened simultaneously on the production line, and a bluetooth may be selected by mistake when a pairing bluetooth name is manually selected, which finally results in that the tested bluetooth is not the bluetooth of the ETC on the production line vehicle, thus reducing the accuracy of the detection result;
4. according to the scheme of entering the self-checking through ETC power-on, the scheme starts entering the self-checking after the power supply is turned on, manual power-on and power-off operation is needed, and when the self-checking is needed to be re-entered, the power-off is needed to be re-electrified, so that the implementation in a production line is not facilitated;
5. the physical key mode enters self-checking, on one hand, manual operation is needed; on the other hand, the installation position of the front ETC may not be convenient for pressing the key;
6. by entering a self-checking scheme in linkage with other ECUs, the scheme depends on the states of the other ECUs, and once the linked ECUs or communication between the linked ECUs and the linked ECUs fail, the self-checking cannot be performed, and the mode has the risk of enabling clients to enter by misoperation, so that unnecessary complaints are easily caused.
Therefore, developing a self-test system capable of binding vehicle information with ETC is a challenge for those skilled in the art to solve the above problems.
Disclosure of Invention
In order to solve the problems, the invention discloses an ETC detection method and system for binding vehicle self-detection through Bluetooth anti-interference.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an ETC detection method for binding vehicle self-detection through Bluetooth anti-interference comprises the following steps:
s1, acquiring an automobile VIN code, and transmitting the automobile VIN code to an RSU;
S2, establishing link connection between the RSU and the ETC, and carrying out information interaction to obtain a Bluetooth MAC address;
s3, the RSU performs Bluetooth pairing detection according to the acquired Bluetooth MAC address.
Further, the specific method is as follows:
s1, acquiring an automobile VIN code, and transmitting the automobile VIN code to an RSU;
S2-1, continuously and periodically transmitting a broadcast by the RSU, after receiving the broadcast, transmitting an instruction carrying ETC information to the RSU by the ETC, and completing link connection by the RSU after receiving the instruction sent by the ETC;
s2-2, the RSU sends a frame number writing instruction;
s2-3, after receiving the command of writing the frame number, the ETC records the frame number and feeds back the frame number information after the recording to the RSU;
s2-4, the RSU sends a self-checking instruction;
S2-5, after receiving the self-checking instruction, the ETC enters self-checking, and feeds back a self-checking result to the antenna;
S2-6, after receiving the self-checking result fed back by the ETC, the antenna records the self-checking result;
s2-7, after the self-checking is finished, the RSU sends an instruction for acquiring the ETC Bluetooth MAC address;
s2-8, receiving an instruction of acquiring an ETC Bluetooth MAC address by the ETC, feeding back the Bluetooth MAC address to the RSU, recording the Bluetooth MAC address by the RSU, and sending an instruction of starting a Bluetooth module;
s2-9, after receiving the instruction for starting the Bluetooth module, the ETC starts the Bluetooth module carried by the ETC;
S3-1, the RSU receives information sent by the Bluetooth module, compares an MAC address in the information with an ETC Bluetooth MAC address acquired before, and sends a Bluetooth module function detection starting instruction if the MAC address is consistent with the ETC Bluetooth MAC address, otherwise, the RSU does not start;
S3-2, receiving a Bluetooth module function starting detection instruction sent by the RSU by the ETC, and starting the Bluetooth module function detection by the ETC;
s3-3, feeding back a Bluetooth function detection result to the RSU by the ETC, and recording the detection result by the RSU;
S3-4, the RSU sends an instruction for breaking the link connection and is disconnected with the ETC.
Further, in step S1, the VIN code of the vehicle is obtained by scanning with a code scanner.
Further, the written frame number instruction in step S2-2 and the self-checking instruction in step S2-4 are different from the transaction instruction.
Further, after receiving the self-checking instruction, the ETC in step S2-5 sequentially detects the 5.8G chip, the Bluetooth chip, the ESAM module and the anti-dismantling module, and feeds back the self-checking result to the antenna.
Further, in step S2-8, the RSU sends a bluetooth module on command through the 5.8G chip.
Further, the frame number information in step S2-3, the self-checking result of step S2-5, and the Bluetooth function checking result of step S3-3 are all displayed on the PC.
The invention also provides an ETC detection system for the self-checking of the binding vehicle through Bluetooth anti-interference, which comprises an automobile VIN code acquisition module, an RSU, an ETC and a PC;
The automobile VIN code acquisition module is used for scanning an automobile VIN code and inputting the automobile VIN code into the RSU;
The RSU establishes link connection with the ETC to perform information interaction;
the PC is used for displaying information interaction results of the RSU and the ETC.
Compared with the prior art, the invention has the following beneficial effects:
1. by acquiring the unique VIN code of each automobile, the RSU automatically issues an instruction for writing the frame number to the ETC, so that the one-to-one correspondence between the automobile and the ETC can be realized, and the VIN code anti-dismantling function is realized;
2. the RSU acquires the MAC address of the ETC Bluetooth through the 5.8G channel, the address is used for comparing with the address of the detected Bluetooth module later, and the Bluetooth module is informed to detect if the address is consistent with the address of the detected Bluetooth module, so that the interference generated by other Bluetooth modules in the production line when sending information is avoided, and the stability and accuracy of detection are ensured;
3. the whole detection flow only needs to scan VIN codes manually, other flows can be completed automatically, manual operation is greatly reduced, the accuracy of detection results is improved, the production cost is reduced, and the production line efficiency is improved.
Drawings
FIG. 1 is a flow chart of the detection of the present invention.
Detailed Description
The technical scheme provided by the present invention will be described in detail with reference to the following specific examples, and it should be understood that the following specific examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1:
The embodiment is an ETC detection method for binding vehicle self-detection through Bluetooth anti-interference, which comprises the following specific steps:
s1, scanning by a code scanning gun to obtain an automobile VIN code, and transmitting the automobile VIN code to an RSU;
S2-1, continuously and periodically transmitting a broadcast by the RSU, after receiving the broadcast, transmitting an instruction carrying ETC information to the RSU by the ETC, and completing link connection by the RSU after receiving the instruction sent by the ETC;
S2-2, the RSU sends a frame number instruction which is different from the transaction instruction in writing;
the format of the written frame number instruction is as follows:
The parameters and meanings are as follows:
MAC ADDRESS: the MAC address of ETC is obtained in the process of establishing a link;
MAC control: mac control field, take 0x40;
LLC control: LLC control domain, taking 0xF7;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark which occupies two bytes and has fixed values of 0xFE and 0xEF;
command num: the command number is written into the frame number and takes a value of 0x01;
Command length: the command length is 0x01 when the frame number is written;
Command Content: the instruction content and the length are determined by Command length, and the value is 0x03 when the frame number is written;
DATA LENGTH: the data length is 0x08 when the frame number is written;
Data Content: the instruction content and the length are determined by DATA LENGTH, and the value is the frame number of the vehicle when the frame number is written in;
FCS: FCS check;
s2-3, after receiving the command of writing the frame number, the ETC records the frame number and feeds back the frame number information after the recording to the RSU;
The format of ETC return write frame number result instruction is:
The parameters and meanings are as follows:
MAC ADDRESS: MAC address of ETC;
MAC control: mac control field, take 0xE0;
LLC control: LLC control domain, taking 0x77;
status: a state subfield, taking 0x00;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark occupies two bytes, and the fixed value is 0xFE,0xFE;
command num: the command number is written into the frame number and takes a value of 0x01;
Command length: the command length is 0x01 when the frame number is written;
Command Content: instruction content, length is determined by Command length. When the frame number is written, the return instruction length is 1 byte, 1 represents that ETC writing the frame number is successful, and 0 represents that ETC writing the frame number fails;
FCS: and (5) checking FCS.
S2-4, the RSU sends a self-checking instruction different from the transaction instruction;
The format of the issued self-checking instruction is as follows:
The parameters and meanings are as follows:
MAC ADDRESS: the MAC address of ETC is obtained in the process of establishing a link;
MAC control: mac control field, take 0x40;
LLC control: LLC control domain, taking 0xF7;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark which occupies two bytes and has fixed values of 0xFE and 0xEF;
Command num: the number of instructions and the value of 0x01 during self-checking;
command length: instruction length, value 0x01 in self-checking;
Command Content: the instruction content and the length are determined by Command length, and the value of the instruction content and the length is 0x01 during self-checking;
FCS: FCS check;
S2-5, after receiving the self-checking instruction, the ETC enters self-checking, sequentially detects the 5.8G chip, the Bluetooth chip, the ESAM module and the anti-dismantling module, and feeds back the self-checking result to the antenna;
The ETC returns a self-checking result instruction format as follows:
The parameters and meanings are as follows:
MAC ADDRESS: MAC address of ETC;
MAC control: mac control field, take 0xE0;
LLC control: LLC control domain, taking 0x77;
status: a state subfield, taking 0x00;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark occupies two bytes, and the fixed value is 0xFE,0xFE;
Command num: the number of instructions and the value of 0x01 during self-checking;
Command length: instruction length, value 0x04 in self-checking;
Command Content: instruction content, length is determined by Command length. The length of the return instruction is 4 bytes during self-checking, the value of the first byte is 0 or 1,1 represents self-checking abnormality, and 0 represents self-checking normal; reserving the 2 nd byte and the 3 rd byte; the fourth byte represents a fault identifier, bit0 represents an anti-disassembly exception, bit1 represents a 5.8G chip exception, bit2 represents a Bluetooth chip exception, bit3 represents an ESAM module exception;
FCS: FCS check;
S2-6, after receiving the self-checking result fed back by the ETC, the antenna records the self-checking result;
s2-7, after the self-checking is finished, the RSU sends an instruction for acquiring the ETC Bluetooth MAC address;
the instruction format for acquiring the Bluetooth MAC address is as follows:
The parameters and meanings are as follows:
MAC ADDRESS: the MAC address of ETC is obtained in the process of establishing a link;
MAC control: mac control field, take 0x40;
LLC control: LLC control domain, taking 0xF7;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark which occupies two bytes and has fixed values of 0xFE and 0xEF;
command num: the instruction number is 0x01 when the Bluetooth MAC address is acquired;
Command length: the instruction length is 0x01 when the Bluetooth MAC is acquired;
Command Content: the instruction content and the length are determined by a Command length, and the value of the instruction content is 0x02 when Bluetooth MAC is acquired;
FCS: FCS check;
s2-8, receiving an instruction of acquiring an ETC Bluetooth MAC address by the ETC, feeding back the Bluetooth MAC address to the RSU, recording the Bluetooth MAC address by the RSU, and sending an instruction of starting a Bluetooth module through a 5.8G chip;
the ETC returns an instruction format carrying a Bluetooth MAC address as follows:
The parameters and meanings are as follows:
MAC ADDRESS: MAC address of ETC;
MAC control: mac control field, take 0xE0;
LLC control: LLC control domain, taking 0x77;
status: a state subfield, taking 0x00;
Head: segment headers, 0x91;
SPECIAL FLAG: a special instruction mark occupies two bytes, and the fixed value is 0xFE,0xFE;
command num: the instruction number is 0x01 when the Bluetooth MAC address is acquired;
command length: the instruction length is 0x04 when the Bluetooth MAC is acquired;
command Content: the instruction content, the length is determined by Command length, the length is 4 bytes when the Bluetooth MAC is obtained, and the content is the MAC address of Bluetooth;
FCS: FCS check;
s2-9, after receiving the instruction for starting the Bluetooth module, the ETC starts the Bluetooth module carried by the ETC;
S3-1, the RSU receives information sent by the Bluetooth module, compares an MAC address in the information with an ETC Bluetooth MAC address acquired before, and sends a Bluetooth module function detection starting instruction if the MAC address is consistent with the ETC Bluetooth MAC address, otherwise, the RSU does not start;
S3-2, receiving a Bluetooth module function starting detection instruction sent by the RSU by the ETC, and starting the Bluetooth module function detection by the ETC;
s3-3, feeding back a Bluetooth function detection result to the RSU by the ETC, and recording the detection result by the RSU;
S3-4, the RSU sends an instruction for breaking the link connection and is disconnected with the ETC.
The frame number information in the step S2-3, the self-checking result of the step S2-5 and the Bluetooth function detection result of the step S3-3 are all displayed on the PC.
Example 2:
the embodiment provides an ETC detection system for binding vehicle self-detection through Bluetooth anti-interference, which is used for realizing the detection method of the embodiment 1, and comprises an automobile VIN code acquisition module, an RSU, ETC and a PC.
The automobile VIN code acquisition module is used for scanning the automobile VIN code and inputting the automobile VIN code into the RSU.
And the RSU establishes link connection with the ETC to perform information interaction.
The PC is used for displaying information interaction results of the RSU and the ETC.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the technical solution, and those skilled in the art should understand that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the present invention, and all the modifications and equivalents are included in the scope of the claims of the present invention.
Claims (7)
1. An ETC detection method for binding vehicle self-detection through Bluetooth anti-interference is characterized by comprising the following steps of: the method comprises the following steps:
s1, acquiring an automobile VIN code, and transmitting the automobile VIN code to an RSU;
S2, establishing link connection between the RSU and the ETC, and carrying out information interaction to obtain a Bluetooth MAC address;
the method comprises the following steps:
S2-1, continuously and periodically transmitting a broadcast by the RSU, after receiving the broadcast, transmitting an instruction carrying ETC information to the RSU by the ETC, and completing link connection by the RSU after receiving the instruction sent by the ETC;
s2-2, the RSU sends a frame number writing instruction;
s2-3, after receiving the command of writing the frame number, the ETC records the frame number and feeds back the frame number information after the recording to the RSU;
s2-4, the RSU sends a self-checking instruction;
S2-5, after receiving the self-checking instruction, the ETC enters self-checking, and feeds back a self-checking result to the antenna;
S2-6, after receiving the self-checking result fed back by the ETC, the antenna records the self-checking result;
s2-7, after the self-checking is finished, the RSU sends an instruction for acquiring the ETC Bluetooth MAC address;
s2-8, receiving an instruction of acquiring an ETC Bluetooth MAC address by the ETC, feeding back the Bluetooth MAC address to the RSU, recording the Bluetooth MAC address by the RSU, and sending an instruction of starting a Bluetooth module;
s2-9, after receiving the instruction for starting the Bluetooth module, the ETC starts the Bluetooth module carried by the ETC;
s3, the RSU performs Bluetooth pairing detection according to the acquired Bluetooth MAC address;
the method comprises the following steps:
S3-1, the RSU receives information sent by the Bluetooth module, compares an MAC address in the information with an ETC Bluetooth MAC address acquired before, and sends a Bluetooth module function detection starting instruction if the MAC address is consistent with the ETC Bluetooth MAC address, otherwise, the RSU does not start;
S3-2, receiving a Bluetooth module function starting detection instruction sent by the RSU by the ETC, and starting the Bluetooth module function detection by the ETC;
s3-3, feeding back a Bluetooth function detection result to the RSU by the ETC, and recording the detection result by the RSU;
S3-4, the RSU sends an instruction for breaking the link connection and is disconnected with the ETC.
2. The ETC detection method for self-checking a bound vehicle by bluetooth tamper-proofing according to claim 1, wherein: in the step S1, the VIN code of the automobile is obtained through scanning by a code scanning gun.
3. The ETC detection method for self-checking a bound vehicle by bluetooth tamper-proofing according to claim 1, wherein: the written frame number instruction in the step S2-2 and the self-checking instruction in the step S2-4 are different from the transaction instruction.
4. The ETC detection method for self-checking a bound vehicle by bluetooth tamper-proofing according to claim 1, wherein: and after receiving the self-checking instruction, the ETC in the step S2-5 sequentially detects the 5.8G chip, the Bluetooth chip, the ESAM module and the anti-dismantling module, and feeds back the self-checking result to the antenna.
5. The ETC detection method for self-checking a bound vehicle by bluetooth tamper-proofing according to claim 1, wherein: and in the step S2-8, the RSU sends a Bluetooth module starting instruction through the 5.8G chip.
6. The ETC detection method for self-checking a bound vehicle by bluetooth tamper-proofing according to claim 1, wherein: the frame number information in the step S2-3, the self-checking result of the step S2-5 and the Bluetooth function detection result of the step S3-3 are all displayed on a PC.
7. An ETC detection system for self-checking a binding vehicle through bluetooth anti-interference, configured to implement an ETC detection method for self-checking a binding vehicle through bluetooth anti-interference as set forth in any one of claims 1 to 6, wherein: the system comprises an automobile VIN code acquisition module, an RSU, an ETC and a PC;
The automobile VIN code acquisition module is used for scanning an automobile VIN code and inputting the automobile VIN code into the RSU;
the RSU establishes link connection with the ETC to perform information interaction;
the PC is used for displaying information interaction results of the RSU and the ETC.
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