Controller for electric vehicle

Abstract

The invention provides a controller for an electric vehicle. The controller for the electric vehicle comprises a coding module, a sending module, a receiving module, a judgement module and a selection module, wherein the coding module is used for coding first message information according to a preset coding rule, wherein the first message information contains multiple frames of CAN messages; the sending module is used for sending the coded first message information to a first CAN bus and a second CAN bus; the receiving module is used for receiving second message information from the first CAN bus, and receiving the second message information from the second CAN bus; the judgement module is used for judging whether the second message information is correct or not according to a preset judgement rule; and the selection module is used for determining the applied second message information according to a preset selection rule, wherein the preset selection rule comprises: the second message information received from the first CAN bus being wrong, and switching to apply message data in the second message information received from the first CAN bus if the second message information received from the second CAN bus is wrong while monitoring that the correct times of the second message information received from the first CAN bus does not reach preset times.

Description

technical field [0001] The invention relates to automobile communication technology, in particular to a controller. Background technique [0002] At present, CAN bus technology has been widely used in various detection and control systems. It is a serial communication network that effectively supports distributed control systems. CAN bus connects automotive electronic equipment and electronic control units (Electronic Control Units) , ECU) are effectively connected, usually the CAN bus is connected to more than one ECU. [0003] In the prior art, there is only one CAN path between two ECUs in the CAN bus system architecture, and when the CAN path fails, communication between the ECUs will fail. Therefore, it is urgent to propose a controller that communicates with the dual redundant CAN bus to enhance the anti-failure capability of the CAN bus. Contents of the invention [0004] The invention provides a controller to enhance the anti-failure capability of the CAN bus. ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there is only one CAN path between the two ECUs in the CAN bus system architecture. When the CAN path fails, the ECUs cannot communicate with each other.

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