Method, device, medium and equipment for wireless diagnosis of electric vehicle motor controller based on uds protocol

Abstract

The invention discloses a wireless diagnosis method for a motor controller of an electric vehicle based on the UDS protocol, adopts a wireless communication transmission mode, and establishes a diagnosis communication mechanism with the ECU of the motor controller based on the UDS unified diagnosis service rule of the CAN bus, and reads the data stored in the ECU. Fault information and parameters in the internal storage area, and parsed for troubleshooting. The invention also discloses a wireless diagnostic device, which includes a client and a wireless communication module. The client establishes diagnostic communication with the ECU of the motor controller through the communication module and based on the UDS unified diagnostic service rules of the CAN bus, and reads and stores Fault information and parameters in the ECU internal storage area, and parsed for troubleshooting. The invention also correspondingly discloses a medium and equipment corresponding to the above method. The method, device, medium and equipment of the invention all have the advantages of safe and reliable communication, good stability, improved work efficiency and the like.

Description

technical field [0001] The invention mainly relates to the technical field of electric vehicle testing, in particular to a UDS protocol-based wireless diagnosis method, device, medium and equipment for an electric vehicle motor controller. Background technique [0002] With more and more ECU (Electronic Control Unit) components on the car, each ECU will inevitably have different faults due to the influence of the external environment and the aging of its own components during the long-term use. When a vehicle breaks down for after-sales, it is necessary to quickly read the information of the failed ECU and determine the component and cause of the failure without dismantling the car body or ECU shell. The fault diagnosis function has become an essential function for each ECU. At the same time, when the ECU has defects and faults caused by software or needs to iteratively upgrade the ECU function, the ECU also needs to support the online program update function. [0003] At p...

AI Technical Summary

Problems solved by technology

The system did not perform fault diagnosis in accordance with the UDS standard specification during the working process, which would bring inconvenience to the subsequent after-sales maintenance and the realization of the functions of the Internet of Vehicles

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