Method for vehicle diagnostics, diagnostic connector, and diagnostic device

A diagnostic device, comprising:

• a first communication port;
• and
• a second communication port, wherein the diagnostic device is comprised in a vehicle diagnostic system comprising the diagnostic device, a diagnostic interface, and a diagnostic connector, wherein the diagnostic interface comprises a third communication port and a fourth communication port and the diagnostic connector comprises a fifth communication port, a sixth communication port, and a seventh communication port;
• wherein the diagnostic device is configured to establish a communication connection with the diagnostic connector through the first communication port and the fifth communication port of the diagnostic connector, and the diagnostic device is configured to establish a communication connection with the diagnostic interface through the second communication port and the fourth communication port of the diagnostic interface;
• the diagnostic connector is configured to establish a communication connection with the diagnostic interface through the sixth communication port of the diagnostic connector and the third communication port of the diagnostic interface, and the diagnostic connector is configured to establish a communication connection with a vehicle to-be-diagnosed through the seventh communication port of the diagnostic connector and an on-board diagnostic (OBD) port of the vehicle to-be-diagnosed;
• a first communication link is formed among the first communication port, the fifth communication port, and the seventh communication port;
• a second communication link is formed among the second communication port, the fourth communication port, the third communication port, the sixth communication port, and the seventh communication port;
• and the diagnostic device further comprises:
• a memory configured to store a vehicle diagnostic program;
• and
• a processor, when executing the vehicle diagnostic program, configured to:
• obtain a diagnostic request, the diagnostic request comprising vehicle information of the vehicle to-be-diagnosed;
• wherein the communication protocol which is applied in the vehicle to-be-diagnosed comprises a controller area network (CAN) communication protocol and/or a diagnostic communication over Internet protocol (DoIP) communication protocol;
• obtain a diagnostic instruction, the diagnostic instruction comprising a diagnostic function instruction and a communication protocol corresponding to the diagnostic function instruction, wherein the diagnostic function instruction is implemented as two diagnostic function instructions, and diagnostic function instructions each support the CAN communication protocol and the DoIP communication protocol;
• determine a diagnostic function instruction needing online resource support of a server to be a third diagnostic function instruction, and determine a diagnostic function instruction needing no online resource support of the server to be a fourth diagnostic function instruction;
• assign the first communication link to a communication link corresponding to the third diagnostic function instruction, and assign the second communication link to a communication link corresponding to the fourth diagnostic function instruction;
• send the third diagnostic function instruction to the vehicle to-be-diagnosed through the first communication link and simultaneously send the fourth diagnostic function instruction to the vehicle to-be-diagnosed through the second communication link, and obtain feedback data from the vehicle to-be-diagnosed, wherein the feedback data is used to instruct the diagnostic device to perform diagnostics.

A non-transitory computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to:

• obtain a diagnostic request, the diagnostic request comprising vehicle information of a vehicle to-be-diagnosed;
• determine a communication protocol which is applied in the vehicle to-be-diagnosed according to the vehicle information, wherein the communication protocol which is applied in the vehicle to-be-diagnosed comprises a controller area network (CAN) communication protocol and/or a diagnostic communication over Internet protocol (DoIP) communication protocol;
• obtain a diagnostic instruction, the diagnostic instruction comprising a diagnostic function instruction and a communication protocol corresponding to the diagnostic function instruction;
• wherein the diagnostic function instruction is implemented as two diagnostic function instructions, wherein a communication protocol corresponding to a first diagnostic function instruction is the DoIP communication protocol, and a communication protocol corresponding to a second diagnostic function instruction is the CAN communication protocol;
• assign the first communication link to a communication link corresponding to the first diagnostic function instruction, and assign the second communication link to a communication link corresponding to the second diagnostic function instruction;
• and
• send the first diagnostic function instruction to the vehicle to-be-diagnosed through the first communication link and simultaneously send the second diagnostic function instruction to the vehicle to-be-diagnosed through the second communication link, and obtain feedback data from the vehicle to-be-diagnosed, wherein the feedback data is used to instruct a diagnostic device to perform diagnostics.