Working principle ;
When the driver backs the car, the gear is pushed to the R gear, and the system automatically emits ultrasonic waves to the rear of the car by the probe at the rear of the car, and generates echo signals when encountering obstacles.
After the controller controls and processes the echo signals, it can judge the direction and distance of the obstacles. Finally, the display or buzzer sends out an image prompt, so that the driver can know what to do when reversing, which is easier and safer
