Fault detection device and method of finished automobile controller

Abstract

The invention discloses a fault detection device and method of a finished automobile controller. The method comprises that a communication module writes a diagnosis mode program in the finished automobile controlled in a detection scene, writes a work mode program in the finished automobile controlled in a work scene, and provides data communication between the finished automobile controller and a host computer controller in the detection process; the host computer controller determines and emits a detection instruction according to a channel between each pin and a microprocessor, and determines the fault type and position according to detection result signals from the communication module or a signal processing and collecting module, corresponding detection instruction and the corresponding pins; and the signal processing and collecting module receives the detection instruction emitted by the host computer controller, generates a detection signal, sends the detection signal to corresponding pins at the input end of the finished automobile controller, collects the detection result signals from the finished automobile controller, and returns the detection result signals to the host computer controller. The device and method of the invention can improve the accuracy and efficiency of fault detection.

Description

technical field [0001] The invention relates to the technical field of automobiles, and more particularly, to a fault detection device and method for a vehicle controller. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. As a new energy vehicle with reduced oil consumption, low pollution, and low noise, electric vehicles are considered to be an important way to solve the energy crisis and environmental degradation. Hybrid vehicles take into account the advantages of pure electric vehicles and traditional internal combustion engine vehicles at the same time. On the premise of meeting the requirements of vehicle power and mileage, it effectively improves fuel economy and reduces emissions. It is considered to be...

AI Technical Summary

Problems solved by technology

[0005] However, the main defect of this existing technical solution is that for the cause of the specific problem, or the situation that the fault has a phenomenon but does not report to the police, further analysis is mainly carried out through the functional testing platform and hardware-in-the-loop testing, and the obtained The results are relatively rough, and it is not conducive to refine the cause of the problem. It is often impossible to eliminate the interference of hardware factors for software error checking and data error checking.

In addition, because there are many cross-factors when the simulated load is running, it has caused certain difficulties in troubleshooting.

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