CN113467410A - Vehicle electronic control unit data acquisition method, transmission method and acquisition device - Google Patents
Vehicle electronic control unit data acquisition method, transmission method and acquisition device Download PDFInfo
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- CN113467410A CN113467410A CN202010241089.6A CN202010241089A CN113467410A CN 113467410 A CN113467410 A CN 113467410A CN 202010241089 A CN202010241089 A CN 202010241089A CN 113467410 A CN113467410 A CN 113467410A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The embodiment of the invention provides a method for acquiring data of a vehicle electronic control unit, a transmission method and an acquisition device. The obtaining method is applied to a diagnostic instrument with a Near Field Communication (NFC) function, and comprises the following steps: the diagnostic instrument sends an authentication request to an OBD interface of the vehicle-mounted automatic diagnostic system in a wireless mode; and if the diagnostic instrument receives a response of successful authentication fed back by the OBD interface, the decrypted data of the electric control unit of the vehicle is received through the OBD interface. According to the invention, a method for damaging the wiring harness of the whole vehicle is not used, the decryption function of the whole vehicle can be realized, the information interaction is carried out between the external diagnostic instrument with the NFC function and the OBD interface, the decryption function of the whole vehicle is realized, so that 4S shops or factory workers can judge the faults of the whole vehicle and acquire the key information of the vehicle, and the method has the advantages of simplicity, low cost and high data acquisition efficiency of the electric control unit.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method for acquiring data of a vehicle electronic control unit, a transmission method and an acquisition device.
Background
The OBD interface of the vehicle-mounted automatic diagnosis system is used as a communication interface of the vehicle-mounted monitoring system, and has the primary functions of providing various working condition data of the vehicle and modifying key data of each electric control unit of the whole vehicle and controlling the action of the vehicle and all switches of the vehicle except reading fault codes for repairing the vehicle.
However, since the entire car manufacturer performs an encryption function on the OBD interface, when a 4S shop or a factory needs to analyze the entire car data, a decryption operation needs to be performed, which is complex in process and low in efficiency.
Disclosure of Invention
The invention aims to solve the technical problems of a method, a transmission method and a device for acquiring data of a vehicle electric control unit, and solves the problems of complex method and low efficiency of acquiring the data of the vehicle electric control unit in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
according to one aspect of the invention, a method for acquiring data of a vehicle electronic control unit is provided, which is applied to a diagnostic instrument with a Near Field Communication (NFC) function, and comprises the following steps:
the diagnostic instrument sends an authentication request to an OBD interface of the vehicle-mounted automatic diagnostic system in a wireless mode;
and if the diagnostic instrument receives a response of successful authentication fed back by the OBD interface, the decrypted data of the electric control unit of the vehicle is received through the OBD interface.
Further, the diagnostic apparatus sends an authentication request to an on-board diagnostic (OBD) interface of the vehicle-mounted automatic diagnostic system in a wireless mode, and the authentication request comprises:
the diagnostic instrument encrypts the authentication request by using an asymmetric key or a dynamic key;
and sending the encrypted authentication request to an OBD interface.
Further, receiving the decrypted electronic control unit data of the vehicle through the OBD interface includes:
receiving the electronic control unit data after the decryption of the vehicle that the OBD interface sent, the electronic control unit data is that the electronic control unit of vehicle sends the electronic control unit data to the gateway, and by the gateway decryption, wherein, the electronic control unit with the gateway passes through wired mode communication connection, the gateway with the OBD interface passes through wired mode communication connection.
According to another aspect of the invention, a method for transmitting data of a vehicle electronic control unit is also provided, which is applied to an on-board automatic diagnosis system (OBD) interface, and comprises the following steps:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode;
after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument;
and receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
Further, the OBD interface wirelessly receives an authentication request transmitted from a diagnostic device having a NFC function, and includes:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode, and the authentication request is encrypted by using an asymmetric key or a dynamic key.
Further, after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument, including:
and decrypting the authentication request by using the asymmetric key or the dynamic key, and feeding back a response of successful authentication to the diagnostic instrument after the decryption is successful.
Further, receiving the decrypted data of the electronic control unit sent by the gateway and sending the data to the diagnostic apparatus includes:
and receiving the decrypted data of the electric control unit sent by the gateway in a wired mode, and sending the data to the diagnostic instrument.
According to another aspect of the present invention, there is also provided a device for acquiring data of a vehicle electronic control unit, which is applied to a diagnostic apparatus with NFC function, the device including:
the sending module is used for sending an authentication request to an OBD interface of the vehicle-mounted automatic diagnosis system in a wireless mode;
and the receiving module is used for receiving the decrypted electronic control unit data of the vehicle through the OBD interface if receiving the response of successful authentication fed back by the OBD interface.
According to another aspect of the present invention, there is also provided an on-board automatic diagnostic system OBD interface, comprising:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode; after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument; and receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
According to another aspect of the invention, an automobile is also provided, which comprises an on-board automatic diagnosis system (OBD) interface, a gateway connected with the OBD interface, and at least one electronic control unit connected with the gateway, wherein the OBD interface is the OBD interface.
The scheme of the invention at least comprises the following beneficial effects:
according to the scheme, the decryption function of the whole vehicle can be realized without using a method for damaging the wiring harness of the whole vehicle, the decryption function of the whole vehicle is realized by carrying out information interaction with the OBD interface through the external diagnostic instrument with the NFC function, so that 4S shop or factory workers can judge the faults of the whole vehicle and acquire key information of the vehicle, and the method has the advantages of simplicity, low cost and high data acquisition efficiency of the electric control unit.
Drawings
FIG. 1 is a step diagram of a method of acquiring vehicle ECU data in accordance with an embodiment of the present invention;
FIG. 2 is a step diagram of a method of transmitting vehicle ECU data in accordance with an embodiment of the present invention;
fig. 3 is a device connection diagram of a vehicle ecu data acquisition apparatus according to an embodiment of the present invention;
fig. 4 is a specific flowchart of the operation of the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a method for acquiring data of a vehicle electronic control unit, which is applied to a diagnostic apparatus with a near field communication NFC function, and the method includes:
s1, the diagnostic device sends an authentication request to an OBD interface of the vehicle-mounted automatic diagnostic system in a wireless mode;
and S2, if the diagnostic device receives the response of successful authentication fed back by the OBD interface, the decrypted electronic control unit data of the vehicle is received through the OBD interface.
According to the acquisition method provided by the embodiment of the invention, the decryption function of the whole vehicle can be realized without using a method for damaging the wiring harness of the whole vehicle, the decryption function of the whole vehicle is realized by carrying out information interaction with the OBD interface through the external diagnostic instrument with the NFC function, so that 4S shop or factory workers can judge the faults of the whole vehicle and acquire key information of the vehicle, and the acquisition method has the advantages of simplicity, low cost and high data acquisition efficiency of the electronic control unit.
In an optional embodiment of the present invention, the step S1 of sending an authentication request to an on-board automatic diagnostic system OBD interface by the diagnostic apparatus in a wireless manner includes:
the diagnostic instrument encrypts the authentication request by using an asymmetric key or a dynamic key;
and sending the encrypted authentication request to an OBD interface.
By encrypting the authentication request, the safety of information interaction between the diagnostic instrument and the OBD interface is improved, the safety and the reliability of operation of the acquisition method are also improved, and the automobile user experience and the acceptance degree are improved.
In an optional embodiment of the present invention, the step S2 of receiving the decrypted ecu data of the vehicle through the OBD interface includes:
receiving the electronic control unit data after the decryption of the vehicle that the OBD interface sent, the electronic control unit data is that the electronic control unit of vehicle sends the electronic control unit data to the gateway, and by the gateway decryption, wherein, the electronic control unit with the gateway passes through wired mode communication connection, the gateway with the OBD interface passes through wired mode communication connection.
In an optional embodiment of the present invention, the electronic control unit and the gateway, and the gateway and the OBD interface may be connected by a CAN line (controller area network), which is favorable for saving cost.
As shown in fig. 2, an embodiment of the present invention provides a method for transmitting data of a vehicle electronic control unit, which is applied to an on-board automatic diagnostic system OBD interface, and the method includes:
s100, the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode;
s200, after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument;
and S300, receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
According to the transmission method provided by the embodiment of the invention, the decryption function of the whole vehicle can be realized without using a method for damaging the wiring harness of the whole vehicle, the information interaction is carried out between the diagnosis instrument externally connected with the NFC function and the OBD interface, the decryption function of the whole vehicle is realized, the data of the decrypted electric control unit is transmitted to the diagnosis instrument by the OBD interface of the vehicle-mounted automatic diagnosis system, so that 4S shop or factory workers can judge the faults of the whole vehicle and acquire the key information of the vehicle, and the transmission method has the advantages of simplicity, low cost and high data transmission efficiency of the electric control unit.
In an optional embodiment of the present invention, the receiving, by the OBD interface, the authentication request sent by the diagnostic apparatus having the NFC function in a wireless manner includes:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode, and the authentication request is encrypted by using an asymmetric key or a dynamic key.
By encrypting the authentication request, the safety of information interaction between the diagnostic instrument and the OBD interface is improved, the safety and the reliability of the operation of the transmission method are also improved, and the automobile user experience and the recognition degree are favorably improved.
In an optional embodiment of the present invention, after the authentication is successful, feeding back a response of the authentication success to the diagnostic apparatus includes:
and decrypting the authentication request by using the asymmetric key or the dynamic key, and feeding back a response of successful authentication to the diagnostic instrument after the decryption is successful.
The working efficiency is improved by using the same method as the authentication request encryption for memorability decryption; after decryption is successful, a response of successful authentication is fed back to the diagnostic instrument, and the interactivity and reliability of the diagnostic instrument and the OBD interface are improved.
In an optional embodiment of the present invention, the receiving the decrypted data of the electronic control unit sent by the gateway, and sending the data to the diagnostic apparatus includes:
and receiving the decrypted data of the electric control unit sent by the gateway in a wired mode, and sending the data to the diagnostic instrument.
In an optional embodiment of the present invention, the electronic control unit and the gateway, and the gateway and the OBD interface may be connected by a CAN line (controller area network), which is favorable for saving cost.
As shown in fig. 3, an embodiment of the present invention provides an apparatus for acquiring data of a vehicle electronic control unit, which is applied to a diagnostic apparatus with a near field communication NFC function, and the apparatus includes:
the sending module is used for sending an authentication request to an OBD interface of the vehicle-mounted automatic diagnosis system in a wireless mode;
and the receiving module is used for receiving the decrypted electronic control unit data of the vehicle through the OBD interface if receiving the response of successful authentication fed back by the OBD interface.
According to the acquisition device provided by the embodiment of the invention, the decryption function of the whole vehicle can be realized without using a method for damaging the wiring harness of the whole vehicle, the decryption function of the whole vehicle is realized by carrying out information interaction with the OBD interface through the external diagnostic instrument with the NFC function, so that 4S shop or factory workers can judge the faults of the whole vehicle and acquire key information of the vehicle, and the acquisition device has the advantages of simple method, low cost and high data acquisition efficiency of the electric control unit.
In an optional embodiment of the present invention, the sending module is specifically configured to:
encrypting the authentication request using an asymmetric key or a dynamic key;
and sending the encrypted authentication request to an OBD interface.
By encrypting the authentication request, the safety of information interaction between the diagnostic instrument and the OBD interface is improved, the safety and the reliability of operation of the acquisition method are also improved, and the automobile user experience and the acceptance degree are improved.
In an optional embodiment of the present invention, the receiving module is specifically configured to:
through the automatically controlled unit data after the OBD interface receives the decryption of vehicle, automatically controlled unit data is that the automatically controlled unit of vehicle sends automatically controlled unit data for the gateway, and by the gateway decryption, wherein, automatically controlled unit with the gateway passes through wired mode communication connection, the gateway with the OBD interface passes through wired mode communication connection.
It should be noted that the apparatus is an apparatus corresponding to the method shown in fig. 1, and all the implementations of the method shown in fig. 1 are applicable to the embodiment of the apparatus, and the same technical effects can be achieved.
The embodiment of the present invention further provides an OBD interface of a vehicle-mounted automatic diagnostic system, including:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode; after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument; and receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
In an optional embodiment of the present invention, the receiving, by the OBD interface, the authentication request sent by the diagnostic apparatus having the NFC function in a wireless manner includes:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode, and the authentication request is encrypted by using an asymmetric key or a dynamic key.
By encrypting the authentication request, the safety of information interaction between the diagnostic instrument and the OBD interface is improved, the safety and the reliability of the operation of the transmission method are also improved, and the automobile user experience and the recognition degree are favorably improved.
In an optional embodiment of the present invention, after the authentication is successful, feeding back a response of the authentication success to the diagnostic apparatus includes:
and decrypting the authentication request by using the asymmetric key or the dynamic key, and feeding back a response of successful authentication to the diagnostic instrument after the decryption is successful.
The working efficiency is improved by using the same method as the authentication request encryption for memorability decryption; after decryption is successful, a response of successful authentication is fed back to the diagnostic instrument, and the interactivity and reliability of the diagnostic instrument and the OBD interface are improved.
In an optional embodiment of the present invention, the receiving the decrypted data of the electronic control unit sent by the gateway, and sending the data to the diagnostic apparatus includes:
and receiving the decrypted data of the electric control unit sent by the gateway in a wired mode, and sending the data to the diagnostic instrument.
In an optional embodiment of the present invention, the electronic control unit and the gateway, and the gateway and the OBD interface may be connected by a CAN line (controller area network), which is favorable for saving cost.
It should be noted that the apparatus is an apparatus corresponding to the method shown in fig. 2, and all the implementations of the method shown in fig. 2 are applicable to the embodiment of the apparatus, and the same technical effects can be achieved.
The embodiment of the invention also provides an automobile, which comprises an OBD interface of the vehicle-mounted automatic diagnosis system, a gateway connected with the OBD interface and at least one electronic control unit connected with the gateway, wherein the OBD interface is the OBD interface.
As shown in fig. 4, a specific work flow of the present invention is: safety certification is carried out through the diagnostic device with the NFC function and the OBD interface, the gateway GW is decrypted after the safety certification, and other controllers of the whole vehicle transmit all data of the whole vehicle to the diagnostic device through the gateway, so that 4S shops or factory workers can judge faults of the whole vehicle and acquire key information of the vehicle.
The method comprises the following specific steps:
firstly, a diagnostic instrument sends an authentication request to an OBD interface of a vehicle-mounted automatic diagnostic system in a wireless mode;
secondly, the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode;
thirdly, after the authentication is successful, the OBD interface feeds back a response of successful authentication to the diagnostic instrument; if the authentication fails, the diagnostic instrument cannot acquire the data of the electric control unit of the whole vehicle;
fourthly, the OBD interface receives the decrypted data of the electric control unit sent by the gateway GW and sends the data to the diagnostic instrument; the electronic control unit may be a vehicle control unit VCU, a battery management system BMS, a microcontroller MCU, etc., which are only described above by way of example.
And fifthly, if the diagnostic instrument receives a response of successful authentication fed back by the OBD interface, receiving the decrypted data of the electric control unit of the vehicle through the OBD interface.
According to the embodiment of the invention, the whole vehicle can realize the decryption function without using a method for damaging the wiring harness of the whole vehicle, and the decryption of the whole vehicle is realized by the interaction of the external equipment with the NFC function and the OBD, so that 4S stores or factory workers can judge the faults of the whole vehicle and acquire the key information of the vehicle.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The method for acquiring the data of the vehicle electronic control unit is applied to a diagnostic instrument with a Near Field Communication (NFC) function, and comprises the following steps:
the diagnostic instrument sends an authentication request to an OBD interface of the vehicle-mounted automatic diagnostic system in a wireless mode;
and if the diagnostic instrument receives a response of successful authentication fed back by the OBD interface, the decrypted data of the electric control unit of the vehicle is received through the OBD interface.
2. The method for acquiring the data of the vehicle electric control unit according to claim 1, wherein the diagnostic instrument wirelessly sends an authentication request to an on-board automatic diagnostic system (OBD) interface, and the method comprises the following steps:
the diagnostic instrument encrypts the authentication request by using an asymmetric key or a dynamic key;
and sending the encrypted authentication request to an OBD interface.
3. The method for acquiring vehicle ecu data according to claim 2, wherein receiving the decrypted ecu data of the vehicle through the OBD interface includes:
receiving the electronic control unit data after the decryption of the vehicle that the OBD interface sent, the electronic control unit data is that the electronic control unit of vehicle sends the electronic control unit data to the gateway, and by the gateway decryption, wherein, the electronic control unit with the gateway passes through wired mode communication connection, the gateway with the OBD interface passes through wired mode communication connection.
4. A transmission method of vehicle electronic control unit data is applied to an on-board automatic diagnosis system (OBD) interface, and comprises the following steps:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode;
after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument;
and receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
5. The method for transmitting the data of the vehicle electronic control unit according to claim 4, wherein the OBD interface wirelessly receives the authentication request sent by the Near Field Communication (NFC) function-equipped diagnostic instrument, and the method comprises the following steps:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode, and the authentication request is encrypted by using an asymmetric key or a dynamic key.
6. The method for transmitting vehicle ecu data according to claim 5, wherein feeding back a response of successful authentication to the diagnostic instrument after successful authentication includes:
and decrypting the authentication request by using the asymmetric key or the dynamic key, and feeding back a response of successful authentication to the diagnostic instrument after the decryption is successful.
7. The method for transmitting data of an electric control unit of a vehicle according to claim 6, wherein the step of receiving the decrypted data of the electric control unit sent by the gateway and sending the data of the electric control unit to the diagnostic instrument comprises the following steps:
and receiving the decrypted data of the electric control unit sent by the gateway in a wired mode, and sending the data to the diagnostic instrument.
8. The device for acquiring the data of the vehicle electronic control unit is applied to a diagnostic instrument with a Near Field Communication (NFC) function, and comprises the following components:
the sending module is used for sending an authentication request to an OBD interface of the vehicle-mounted automatic diagnosis system in a wireless mode;
and the receiving module is used for receiving the decrypted electronic control unit data of the vehicle through the OBD interface if receiving the response of successful authentication fed back by the OBD interface.
9. An on-board automatic diagnostic system (OBD) interface, comprising:
the OBD interface receives an authentication request sent by a diagnostic instrument with a Near Field Communication (NFC) function in a wireless mode; after the authentication is successful, feeding back a response of successful authentication to the diagnostic instrument; and receiving the decrypted data of the electric control unit sent by the gateway and sending the data to the diagnostic instrument.
10. An automobile comprising an on-board automatic diagnostic system (OBD) interface, a gateway connected to the OBD interface, and at least one electronic control unit connected to the gateway, wherein the OBD interface is the OBD interface of claim 9.
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| CN202010241089.6A CN113467410A (en) | 2020-03-31 | 2020-03-31 | Vehicle electronic control unit data acquisition method, transmission method and acquisition device |
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| CN202010241089.6A CN113467410A (en) | 2020-03-31 | 2020-03-31 | Vehicle electronic control unit data acquisition method, transmission method and acquisition device |
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