Electric bus vehicle control unit based on programmable logic controller (PLC) technology

Abstract

The embodiment of the invention provides an electric bus vehicle control unit based on programmable logic controller (PLC) technology; the electric bus vehicle control unit is based on a PLC control platform, is compatible with a controller area network (CAN) communication mode, is provided with a plurality of CAN interfaces, and has communication directly with a finished bus without needing a third party adapter interface; the electric bus vehicle control unit comprises a main central processing unit (CPU), an auxiliary CPU, a digital quantity input output module, an analog quantity input output module, an external extension module, an optical coupling separation module, a power supply system and a communication interface module, wherein the power supply system is used for providing working voltage to the control unit; the digital quantity input output module is connected with the main CPU; the analog quantity input output module is connected with the auxiliary CPU; the main CPU is connected with the auxiliary CPU by the optical coupling separation module; the external extension module is connected with the main CPU; the communication interface module is connected with the main CPU by a CAN bus; and therefore, the electric bus vehicle control unit has communication directly with an electric bus.

Description

technical field [0001] The invention relates to a vehicle controller, in particular to a PLC-based vehicle controller for electric passenger cars. Background technique [0002] In the existing vehicle controller technology, the controller mainly uses the single-chip microcomputer system as the main component, and uses C language or assembly language as the programming tool. It is difficult to change the program of the vehicle controller in this way, and the professional level is relatively low. High, for the current domestic vehicle processing plants, they cannot modify their own control programs according to their needs; while traditional PLC (programmable logic controller) technology is easy to use and highly popular in the market. As a mature industrial control technology, it is widely used in industrial control The field has a wide range of applications, but because there is no CAN system, it is still a short board in the application of the whole vehicle. Contents of t...

AI Technical Summary

Problems solved by technology

[0002] In the existing vehicle controller technology, the controller mainly uses the single-chip microcomputer system as the main component, and uses C language or assembly language as the programming tool. It is difficult to change the program of the vehicle controller in this way, and the professional level is relatively low. High, for the current domestic vehicle processing plants, they cannot modify their own control programs according to their needs; while the traditional PLC (programmable logic controller) technology is easy to use and has a high market popularity. As a mature industrial control technology, it is widely used in industrial control The field has a wide range of applications, but because there is no CAN system, it is still a shortcoming in the application of the whole vehicle

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