Reversing Radar System Based on CAN Bus

To reduce the traffic accidents when backing and parking, we develop a sort of vehicle reverse sensor alarming system based on the CAN bus. The system can be divided into the range acquisition module, the system control module, the bus node controller and the display alarm module. The range acquisition subsystem adopts the ultrasonic technology to measure the distance between the vehicle and the obstacle real time. The system control module takes P89V51RD2 single chip microcomputer as the main processing unit to control the running of the whole system and control various interface circuits. The reverse sensor system connects with the auto digitization platform through the CAN bus, and realizes the automatic self-correction of the detecting system according to the data sharing. The system can eliminate the puzzle induced by the parking and starting, enhance the security of the driving, reduce the traffic accidents and decrease the manufacturing cost. The system is convenient to be extended in the market.