CAN bus (CAN.bus) is a serial multi-master station LAN bus. Its main principle is to connect the relevant controllers on the vehicle to realize the engine controller, gearbox controller, ABS controller and body control. Communication of instruments, meters and other controllers. In addition to making the whole vehicle wiring harness smaller and more organized, and the weight of the whole vehicle is lighter, the CAN-bus system has the greater advantage of real-time sharing of vehicle information.
This paper discusses the design and implementation of the driving recorder based on CAN bus, and elaborates the overall structure, hardware circuit design and software design flow of the system. The developed driving recorder is used to collect the car CAN bus data information in real time during the running of the vehicle, and store the data in the u disk, and transmit it to the PC as the carrier, and analyze the data by using the software on the PC. . Overcoming the previous field data acquisition system must have a computer mode, real-time understanding of various data changes during the operation of the car, synchronous recording of driving conditions, after the vehicle is tested or driven for a long time, the recorded data is used to analyze the driving performance of the vehicle and The operation of each component facilitates the calibration and design work.
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