Electric vehicle intelligent instrument based on safety of whole vehicle control function

Abstract

The invention provides an electric vehicle intelligent instrument based on safety of the whole vehicle control function. The electric vehicle intelligent instrument comprises a watchdog circuit module, a Schmidt reverse trigger, an electronic switch module, a signal sampling circuit module, a main control module, an instrument driving control module, an instrument display, a driving circuit module, and a bus communication module. The watchdog circuit module is connected with the enabling end of the electronic switch module by the Schmidt reverse trigger. The main control module is connected with the electronic switch module by the signal sampling circuit module on one hand, and is connected with the instrument driving control module, the driving circuit module, and the CAN bus communication module on the other hand. The instrument driving control module is connected with the instrument display. The electric vehicle intelligent instrument can be used to automatically take over the control function of the whole vehicle controller, when the whole vehicle controller breaks down, and can be used for the dynamic seamless switching, and then the safety of the whole vehicle control function can be guaranteed.

Description

technical field [0001] The invention relates to an automobile instrument, in particular to an electric vehicle intelligent instrument based on the vehicle control function safety. Background technique [0002] Electric vehicles have become the focus and focus of global development, and its core includes vehicle control systems, drive motor systems and power battery systems. Among them, the vehicle control system is the key to the vehicle's power performance, energy consumption economy, reliability, safety and maintainability, and the vehicle controller is its core. Therefore, once the vehicle controller fails, the electric vehicle will lose its driving function. If the vehicle controller fails while the vehicle is running, there is still a huge risk of safety accidents. Due to the existence of the on-board high-voltage power battery system of electric vehicles, once a driving safety accident occurs, the power battery system may cause a secondary safety accident. Therefore, ...

AI Technical Summary

Problems solved by technology

[0003] Existing vehicle controllers are generally equipped with fault diagnosis and fail-safe control functions. Although the vehicle can still have a certain driving ability in the case of partial failure of the controller, it will still fail when the controller hardware fails seriously. Powerless, the vehicle's driving ability will be lost due to the failure of the vehicle controller function, and the problem of driving safety still exists

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