Most reversing radars use the principle of ultrasonic ranging. When the driver is reversing, the gear is pushed to R, and the system automatically emits ultrasonic waves from the probe installed at the rear of the car to the rear of the car. When encountering obstacles, an echo signal is generated, and the controller After controlling and processing the echo signal, the direction and distance of the obstacle are determined. Finally, the display or buzzer issues an image prompt, allowing the driver to be aware of the situation when reversing, making it easier and safer.
