The Research And Exploitation Of Automobile Electronic Control System Based On CAN-bus

With the enhancement of car dynamic performance and people degree increase in comfort requirements,automotive electronic control modules and automotive electronic devices have also increased. As the increasing electronic equipment caused the continuous increase in the number of wire-geometric growth, also make more and more difficult wiring in the limited space,to limit the expansion of automobile internal control functions,the maintenance of vehicle internal electronic unit also more complex. The traditional wiring hardly can not satisfy this developmental quest,people turn to the automobile LAN.This paper introduces briefly the state and development trend of the global automobile electronics technology, compares several types of mainstream vehicle network, studies home the several kinds currently comparatively popular Fieldbus. according to the need of the vehicle body Control system research, To design CAN communication protocol of application layer which matches the vehicle body control system under the control of module in CAN2.0B. Automobile body control module having five stature modules, They respectively are central control module,the left door module, the right door module,the body former module, the body back module.This system realizes the function about remote control, antitheft, door window lift, inner lamp, exterior lamp, rain wiper and defrost of rear window and rearview mirror;it integrates the body control functions and realizes them by network.Test proves that the body control moudle reachs the data share in a whole automobile.This paper presents research the hardware and software of the control system. Exploite the vehicle body hardware circuit and the CAN communication procedure are illuminated in the paper at lenth,at last the verification experimental have been done based on the application layer protocol.The experimental prove that it is visable for vehicle body protocol of application layer.