Vehicle fault detection system and method based on vehicle-mounted CAN network

Abstract

The invention discloses a vehicle fault detection system and method based on a vehicle-mounted CAN network. According to the system, a CAN bus control module is used for generating fault information when fault occurrence is judged and sending the fault information and whole vehicle data in a preset period through a fault transport protocol; a computer is used for analyzing the fault information and the whole vehicle data according to the fault transport protocol and determining the fault reason with the maximum association possibility to the whole vehicle data and a solution corresponding to the fault reason according to the fault information, the whole vehicle data and prestored fault analysis data. By means of a CAN bus processing device and the computer of the system, vehicle fault detection can be continuously, automatically, promptly and effectively achieved in real time, the fault source can be quickly found and positioned, the possible reason of the fault and the solution are found in an assisting mode, the processing speed and the identification accuracy rate are high, safety and reliability are achieved, timeliness is high, manpower and material resources are greatly saved, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a vehicle fault detection system and detection method based on a vehicle CAN network. Background technique [0002] With the development of automobile technology, the systems on automobiles are becoming more and more complex and large, so the possibility of failures is also increasing, and the difficulty of troubleshooting and detection of failures will become more and more difficult, especially in this data explosion. In this era, a car generates massive amounts of data every moment, and it has become almost impossible to rely on manpower to filter out the appropriate data and judge whether there is a fault and the possible cause. Not only will a lot of time be wasted, but accurate The reliability is not high, and it is likely to miss some minor faults. Moreover, when manually detecting vehicle faults, it is often only when the fault occurs that the fault of the ...

AI Technical Summary

Problems solved by technology

[0002] With the development of automobile technology, the systems on automobiles are becoming more and more complex and large, so the possibility of failures is also increasing, and the difficulty of troubleshooting and detection of failures will become more and more difficult, especially in this data explosion. In this era, a car generates massive amounts of data every moment, and it has become almost impossible to rely on manpower to filter out the appropriate data and judge whether there is a fault and the possible cause. Not only will a lot of time be wasted, but accurate The reliability is not high, it is likely to miss some small faults

Moreover, when manually detecting vehicle faults, it is often only when the fault occurs that the fault of the car is checked. Some faults occur very infrequently, and it takes a lot of time to reproduce them manually, and it is difficult to record detailed data when the fault occurs. with the situation

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