Processing method after reset of controller

Abstract

The invention discloses a processing method after reset of a controller. Other controllers of a whole vehicle controller and a non-whole vehicle controller are utilized, and the method comprises the following steps that S1, when other controllers cannot receive message information, the received last value within Tms time is kept, and when the message information exceeds Tms, a default value is obtained; S2, the time from occurrence to recovery of a reset fault of a vehicle control unit is shorter than the longest tolerance time Tms of other controllers; S3, after the vehicle control unit operates normally, key parameters are stored in a nonvolatile random access memory in real time; and S4, after the vehicle control unit detects the key parameters, the key parameters in the nonvolatile random access memory are directly called to enter the running state before recovery. According to the method, after reset recovery occurs, the reset fault can be identified, the state before the fault occurs can be directly entered, a power-on process does not need to be carried out again, the reset fault of the vehicle control unit is effectively identified, it is guaranteed that the vehicle state is not changed, and the vehicle drivability and safety are improved.

Description

technical field [0001] The invention relates to the technical field of automobile controllers, in particular to a processing method after the controller is reset. Background technique [0002] During the normal operation of the vehicle, each controller may cause the controller to reset due to the failure of the software system or hardware system, and then cause the controller to pass through the vehicle network (CAN / CANFD / Ethernet, etc.) The message information transmitted is interrupted, the vehicle loses power, the vehicle is powered off, and the vehicle controller cannot get fault information feedback and matching solutions. During the normal driving of the vehicle, once the controller is reset, it will have a great impact on the drivability and safety of the vehicle, and even threaten the safety of the driver. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a processing method after the controller is...

AI Technical Summary

Problems solved by technology

[0002] During the normal operation of the vehicle, each controller may cause the controller to reset due to the failure of the software system or hardware system, and then cause the controller to pass through the vehicle network (CAN / CANFD / Ethernet, etc.) The message information transmitted is interrupted, the vehicle loses power, the vehicle is powered off, and the vehicle controller cannot get fault information feedback and matching solutions.

During the normal driving process of the vehicle, once the controller is reset, it will have a great impact on the drivability and safety of the vehicle, and even threaten the life safety of the driver.

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