What Principle Does the Reversing Radar Operate On?

[OJayla]

Reversing radar systems utilize ultrasonic signals, which are controlled by the microcomputer inside the reversing radar host. Through the process of transmitting and receiving signals by the probes, the system calculates the distance to obstacles by comparing the signal's round-trip time and then issues different alarm sounds via the alarm device. Below is a related introduction to the reversing radar system: 1. The reversing radar system consists of the reversing radar ECU, the reversing radar buzzer, and several (usually 4) reversing radar sensors installed on the (rear) bumper. If a rear camera is installed, it will provide an image of the rear area of the vehicle on the navigation screen. 2. When the vehicle is shifted into reverse gear, the reversing radar ECU uses ultrasonic sensors to monitor the area around the rear bumper. If an object is detected within the monitored area, the audible alarm device inside the instrument cluster will sound a warning. The system can detect relatively hard solid obstacles as well as objects like wire mesh and fences. The detection range of the two side sensors is an area 60cm from the corners of the bumper. When the detected distance is less than 20cm on the side or less than 30cm directly behind the center, the sound signal will become continuous to prevent a collision with the bumper.