| Automotive electronics is an important symbol of modern automobiledevelopment, while standardization and modularization are main trends of automobilebody electronic control system software development. A software of vehicle bodyelectronic control system is designed in this thesis according to the latestAUTOSAR(Automotive Open Systems Architecture) international standards. Firstly,the body electronic control system based on CAN/LIN network architecture isdesigned, and software frame is proposed based on AUTOSAR standards. Secondly,according to the interface and the communications instructions of the AUTOSAR,general service components and application software are developed with theprovisions of relevant laws and regulations，body electronic control system diagnosticsoftware is developed base on PC, as well as to read vehicle information, diagnosisoperation and software upgrade. Finally, prototype testing verifies the feasibility andeffectiveness of standardized software development. Major researches are as follows:1) A body electronic control system is designed based on CAN/LIN networkarchitecture which consists of two LIN nodes and three CAN nodes. The networklayout is reasonable to meet the requirements of B-class car.2) The system softare frame is designed based on analysis of the AUTOSAR(AUTomotive Open Systems ARchitecture) system architecture. With RTE(RunTimeEnvironment) thought the hardware and software contact is decoupled, as well asstandardized software interface standardizes software modules.3) The body controller communication system is designed referring to standardarchitecture and level. The CAN/LIN bus communication system stability is improvedby the reasonable design of network layer and application layer after intensiveanalysis of CAN, LIN bus protocol specification.4) According to relevant laws and regulations, main control function of the bodycontroller are achieved, such as light control, wiper control, door locks, motor control,window motor control etc. prototype testing verifies the system function.5) Diagnostic software of the body electronic control system is devoloped basedon VC. With USB-CAN interface, diagnosis operations through CAN-bus andsoftware upgrades are achieved. |
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