CN111813094A

CN111813094A - Vehicle configuration identification and diagnosis method and vehicle diagnosis instrument

Info

Publication number: CN111813094A
Application number: CN202010742422.1A
Authority: CN
Inventors: 姚峰军; 张彦杰; 蔡超; 郭敬元; 敦莹
Original assignee: Beijing Yixiong Info Tech Co ltd
Current assignee: Beijing Yixiong Info Tech Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-10-23

Abstract

The invention provides a vehicle configuration identification and diagnosis method and a vehicle diagnosis instrument. The method comprises the following steps: identifying the voltage condition of the vehicle diagnosis seat and transmitting the voltage condition to an upper computer; acquiring a version reading command which is obtained by the upper computer according to the matching of the communication mode and the baud rate, wherein the communication mode and the baud rate are judged by the upper computer according to the voltage condition; and intelligently matching the mark of the diagnosis resource according to the version replied by the vehicle. The vehicle configuration identification and diagnosis method and the vehicle diagnosis instrument provided by the invention can solve the problem that diagnosis cannot be performed due to selection errors when the version is selected according to experience.

Description

Vehicle configuration identification and diagnosis method and vehicle diagnosis instrument

Technical Field

The invention relates to the technical field of vehicle diagnosis, in particular to a vehicle configuration identification and diagnosis method and a vehicle diagnosis instrument.

Background

In the field of automobile diagnosis, because the diagnosis modes and the diagnosis protocols of the electric control systems configured in various host factories are different, even the electric control unit diagnosis protocols of different versions of the same electric control factory are different, when vehicle diagnosis is carried out, firstly, the electric control unit of which factory the current vehicle is configured, even which version number can be correctly diagnosed. The electric control unit comprises an engine, an after-treatment, an anti-lock brake and other electric controls configured on the vehicle.

The current method of obtaining electrical control information is to obtain the vehicle configuration by the experience of the driver or by finding the configuration nameplate on the vehicle. Therefore, the model corresponding to the corresponding brand is selected in the diagnostic apparatus for diagnosis. But the version number can be obtained only after the electronic control manufacturer and the communication mode are known.

The selection error is possible depending on experience, and the arrangement of the nameplate on the vehicle is time-consuming and labor-consuming. If the selection is wrong, diagnosis cannot be performed.

Disclosure of Invention

The invention aims to provide a vehicle configuration identification and diagnosis method and a vehicle diagnosis instrument, which can solve the problem that diagnosis cannot be performed due to selection errors when versions are selected according to experience.

In order to solve the technical problem, the invention provides a vehicle configuration identification and diagnosis method, which comprises the following steps: identifying the voltage condition of the vehicle diagnosis seat and transmitting the voltage condition to an upper computer; acquiring a version reading command which is obtained by the upper computer according to the matching of the communication mode and the baud rate, wherein the communication mode and the baud rate are judged by the upper computer according to the voltage condition; and intelligently matching the mark of the diagnosis resource according to the version replied by the vehicle.

In some embodiments, the version read command is obtained by matching the communication mode and the baud rate determined by the upper computer.

In some embodiments, obtaining a version read command obtained by the upper computer according to the communication mode and the baud rate matching includes: acquiring an indication that a communication mode sent by an upper computer is CAN; acquiring the baud rate of the vehicle diagnosis seat according to the instruction; transmitting the baud rate to an upper computer; and acquiring a version reading command which is obtained by matching the upper computer according to the permission mode and the baud rate.

In some embodiments, further comprising: and after the intelligent matching is successful, displaying the name and the version of the vehicle electric control system.

In some embodiments, further comprising: after the name and version of the vehicle electronic control system are displayed, the vehicle electronic control system is diagnosed.

In some embodiments, further comprising: and after the intelligent matching is abnormal, processing the abnormality.

In addition, the present invention also provides a vehicle diagnostic apparatus including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the vehicle configuration identification and diagnostic method according to the foregoing.

After adopting such design, the invention has at least the following advantages:

the invention automatically identifies the communication mode and the baud rate of the vehicle electric control system through the communication between the vehicle diagnostic instrument and the upper computer in an intelligent matching mode, further identifies the version of the electric control system, and avoids the process of manually selecting the electric control and the version so as to avoid useless work caused by selection errors.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a flow chart of a vehicle configuration identification and diagnostic method provided by an embodiment of the invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1, the vehicle configuration identifying and diagnosing method provided by the present invention includes the steps of:

and S11, recognizing the voltage condition of the vehicle diagnosis seat and transmitting the voltage condition to the upper computer.

And S12, acquiring a version reading command which is obtained by the upper computer according to the matching of the communication mode and the baud rate, wherein the communication mode and the baud rate are judged by the upper computer according to the voltage condition.

And S13, intelligently matching the mark of the diagnosis resource according to the version replied by the vehicle.

In a more specific embodiment, the present invention provides a vehicle configuration identification and diagnosis method, comprising the following steps:

1. the diagnosis box is connected to the vehicle diagnosis seat, the voltage condition of the vehicle diagnosis seat is intelligently identified, and the voltage condition is transmitted to the upper computer.

2. And the upper computer judges the communication mode of each pin according to the voltage condition. If the CAN communication is performed, the Baud rate of the CAN communication is further identified.

3. Summarizing the communication modes and baud rates corresponding to the versions of the electric control factories and the mode of reading the versions

4. And the upper computer performs targeted sending of a version reading command according to the identified communication pins and baud rate, for example, if the vehicle is identified to be 6, the 14 pins are 250K baud rate, the upper computer only sends data of 250K baud rate at the 6 and 14 pins, so as to prevent CAN bus errors caused by blind sending of the command.

5. And (4) marking all diagnostic system resources according to manufacturers and versions, intelligently matching the current vehicle version information read in the step 4 with the marks of the diagnostic resources, displaying the corresponding system name if the matching is successful, and clicking to enter the corresponding diagnostic function. The step is matched with the mark on the server by software, so that the inconvenience of subsequent manual maintenance is avoided.

Correspondingly, the invention also provides a vehicle diagnostic apparatus which can execute the vehicle configuration identification and diagnosis method. The vehicle diagnostic apparatus may be used as a diagnostic device in a vehicle diagnostic system. As described herein, a vehicle diagnostic instrument may be used to implement a diagnostic function for vehicle faults in a vehicle diagnostic system. Those skilled in the art will appreciate that the term vehicle diagnostic apparatus includes devices in a broad sense, and that vehicle diagnostic apparatus is only one example. The inclusion of a vehicle diagnostic is for clarity and is not intended to limit the application of the present invention to a particular vehicle diagnostic embodiment or a class of vehicle diagnostic embodiments. At least some of the features/methods described herein may be implemented in a network device or component, such as a vehicle diagnostic meter. For example, the features/methods of the present invention may be implemented in hardware, firmware, and/or software running installed on hardware. The vehicle diagnostic instrument may be any device that processes, stores, and/or forwards data frames over a network, such as a server, a client, a data source, and the like. The vehicle diagnostic instrument may include a transceiver (Tx/Rx), which may be a transmitter, a receiver, or a combination thereof. Tx/Rx may be coupled to multiple ports (e.g., uplink and/or downlink interfaces) for transmitting and/or receiving frames from other nodes. The processor may be coupled to the Tx/Rx to process the frames and/or to determine to which nodes to send the frames. A processor may include one or more multi-core processors and/or memory devices, which may serve as data stores, buffers, and the like. The processor may be implemented as a general-purpose processor, or may be part of one or more Application Specific Integrated Circuits (ASICs) and/or Digital Signal Processors (DSPs).

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.

Claims

1. A vehicle configuration identification and diagnostic method, comprising:

identifying the voltage condition of the vehicle diagnosis seat and transmitting the voltage condition to an upper computer;

acquiring a version reading command which is obtained by the upper computer according to the matching of the communication mode and the baud rate, wherein the communication mode and the baud rate are judged by the upper computer according to the voltage condition;

and intelligently matching the mark of the diagnosis resource according to the version replied by the vehicle.

2. The vehicle configuration identification and diagnosis method according to claim 1, wherein the version read command is a version read command obtained by matching the communication mode and the baud rate determined by the host computer.

3. The vehicle configuration identification and diagnosis method according to claim 2, wherein obtaining a version read command obtained by the upper computer according to the communication mode and the baud rate matching comprises:

acquiring an indication that a communication mode sent by an upper computer is CAN;

acquiring the baud rate of the vehicle diagnosis seat according to the instruction;

transmitting the baud rate to an upper computer;

and acquiring a version reading command which is obtained by matching the upper computer according to the permission mode and the baud rate.

4. The vehicle configuration identification and diagnostic method according to claim 1, further comprising:

and after the intelligent matching is successful, displaying the name and the version of the vehicle electric control system.

5. The vehicle configuration identification and diagnostic method according to claim 4, further comprising:

after the name and version of the vehicle electronic control system are displayed, the vehicle electronic control system is diagnosed.

6. The vehicle configuration identification and diagnostic method according to claim 1, further comprising:

and after the intelligent matching is abnormal, processing the abnormality.

7. A vehicle diagnostic apparatus, comprising:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the vehicle configuration identification and diagnostic method of any of claims 1-6.