Automobile diagnosing device

Abstract

The invention provides an automobile diagnosing device which comprises a storage, a controller area network (CAN) controller/transceiver and a processor. The storage is used for storing a Chinese character base, an automobile model parameter data base and automobile CAN messages. The CAN controller/transceiver is connected with an automobile and used for receiving the CAN messages from an automobile. The processor is used for generating and updating the automobile model parameter data base, configuring automobile model parameters in the automobile model parameter data base, generating a monitored message list according to the configured automobile model parameters, maintaining the monitored message list, monitoring the plurality of CAN messages from the automobile according to the messages in the monitored message list and conducting fault diagnosis on the automobile according to monitoring results. The automobile diagnosing device supports detection of a main line signal appointed by a user and facilitates fault detection in after-sale and researching and development processes of the automobile.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an automobile diagnostic device. Background technique [0002] Automobile fault diagnosis is the process of identifying the actual performance of automobiles, testing related devices and finding fault points. There are basically two existing diagnostic methods: one is manual visual experience diagnosis, and the other is instrument and equipment diagnosis. method, and relying on instrument and equipment diagnosis to find faults is also based on the combination of diagnostic methods and diagnostic equipment. [0003] At present, automobile manufacturing is constantly introducing new processes and technologies with high technological content. Manual inspection alone is not only time-consuming, laborious and costly, but also disassembled at will, which will affect the performance and life of the automobile. Inspections account for an increasing proportion. [0004]...

AI Technical Summary

Problems solved by technology

[0007] 1) Lack of flexibility, only fixed data streams can be monitored, and various data streams of the vehicle cannot be detected;

[0008] 2) The openness is poor. Once the communication matrix of the vehicle is changed (upgraded), the software can only be upgraded by the diagnostic instrument manufacturer, and it cannot support a customized communication matrix;

[0009] 3) The function is single, and only the functions fixed by the manufacturer can be realized, and the customized functions cannot be performed. When new functions need to be added, the software can only be upgraded by the diagnostic instrument manufacturer;

[0010] 4) The purpose is single. The current diagnostic equipment can only be used in the after-sales stage of the vehicle. In the process of vehicle research and development, due to the need for continuous updating of the communication matrix, the required functions are also flexible and diverse, and the diagnostic equipment cannot meet the requirements.

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