Automotive CAN-bus Data Acquisition And Monitoring Platform

CAN-bus, as a kind of field bus, is applied more and more widely in the car because of its advantages of sharing information, greatly reducing the wiring harness and associating control. Now, with the hot research on car electronics and car body control system, the research on the communication and application of CAN-bus is getting more and more attention both at home and abroad. However, for the reasons that it is not easy to read and analyze CAN-bus data in the car or the lack of hardware and the high hardware cost, the research and development of the CAN-bus is still inefficient.Under this background, basing on data collection system of CAN-bus, the author of the present study has made a deep research on CAN-bus protocol specifications with its network structure and the message format, to development the operation platform of CAN data with the application of C++ language and the original CAN-bus development tools and software.This platform can make simulation of CAN-bus data communication, and make a real-time monitor of the actual vehicle of CAN-bus data communication. This platform also can monitor the condition of CAN network, receive and send data, and design data base according to the CAN speed characteristics such as large amount of data and communication, to make sure that the data of CAN can be stored and to facilitate the experimental records and subsequent data processing.In addition, this experiment can make a combination of the CAN data acquisition system and the actual vehicle CAN with the help of CAN analyzer, to read the CAN data and design visualization platform for body convenient systems. Due to the limitation of time and conditions, this thesis mainly concentrates on monitoring and analyzing the low speed CAN-bus automobile body electronic convenience system of Changan automobile in the laboratory. The results show that this monitoring platform can handle and reveal the data communication of CAN-bus.