A controller fault handling method, device and terminal

Abstract

The invention discloses a controller fault processing method and device and a terminal. The method comprises the following steps: acquiring a data storage strategy and a data storage space; capturinga first data stream generated in real time under the normal operation state of a controller, and recording the first data stream based on the data storage space according to the data storage strategy;responding to the triggering of the controller fault, and starting a delay data acquisition strategy; capturing a second data stream generated in real time in a fault state of the controller according to the delay data acquisition strategy, and recording the second data stream based on the data storage space according to the data storage strategy; performing controller fault analysis according tothe data record of the data storage space; and according to the invention, when the controller breaks down, the data of the controller can be continuously stored in a delayed manner, so that the dataof the controller before and after the controller fault are stored, the reason of the fault can be conveniently diagnosed, the recurrence of accidents with the cost of manpower and material resourcesis avoided, and the cost is saved.

Description

technical field [0001] The present invention relates to the technical field of fault diagnosis, in particular to a controller fault processing method, device and terminal. Background technique [0002] Electronic controllers, especially automotive electronic controllers, inevitably fail during operation, such as motor controller voltage exceeding the limit, engine controller speed is too high, coolant temperature is too high, etc. The formation of these faults may be due to many reasons Caused, and it takes a while to trigger, so these faults are more difficult to detect. After the tester finds that the controller reports a fault, he needs to understand the cause of the fault. This requires storing some data for analysis. These data are the scene of the fault. [0003] At present, the method commonly used in automotive electronic systems, when the controller fails, only saves some data when the fault occurs, which is called fault freeze frame in fault diagnosis; this method...

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Problems solved by technology

[0003] At present, the method commonly used in automotive electronic systems, when the controller fails, only saves some data when the fault occurs, which is called fault freeze frame in fault diagnosis; this method can only save data at one point in time, and cannot reflect The data before and after the fault occurs, therefore, after the fault occurs, testers have great limitations in detecting and analyzing the fault

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