The Design Of The GM ECU Development Platform

With the development of the automotive industry,the role of automotive electronics in the vehicle is more and more important.In particular,the automobile ECU,like the car's"brain",coordinates various parts of the automotive to work efficiently.It's very important for the safety stability and comfort of a car.Nowadays more and more domestic manufacturers and universities invert a lot of resources in the research of automotive ECU,hoping to develop high-performance automotive ECU and promote the development of the domestic automotive industry.The automotive ECUs used in different types of vehicles has their own characteristics,but we can find the generality from different automotive ECUs and the difference mainly manifests in focusing on different points.Against the generality,we can design an automotive ECU for different vehicles,and that is general automotive ECU.In this paper,by analyzing the design points and functional requirements of the traditional ECU,using a modular design method,we put forward a realization of the general automotive ECU.We can get a certain automotive ECU applicable to a particular kind of vehicles by some configurations.This paper focuses on the realization of a variety of automotive ECU's basic functions,the specific vehicle control program provided by other R&D personnel.When the R&D personnel want to develop their own automotive ECU to control the vehicles,what they need to do is only providing control program and setting the relevant parameters.In this paper,we introduced the general automotive ECU implementation from the perspective of hardware and software,and from the data input and output modules,communication modules,data storage modules and fault diagnosis,etc.We focus on the generality when we design the ECU.In hardware,we emphasize the configurability.In software,we use a open software platform,the CoDeSys of German 3S company,to realize the soft-PLC in embedded platform.By this platform,it's very convenient to realize a control program of a variety of vehicles.In addition,through a simple circuit,the system can realize online fault detection.Once a fault happened,the system can find it and perform the corresponding troubleshooting.