Reversing radar ultrasonic signal reception

0.3m-3m. Reversing radar is mainly composed of ultrasonic sensors, controllers and displays or buzzers, etc. 1, ultrasonic sensors: the main function is to emit and receive ultrasonic signals, and then the signals will be input to the host inside the host, through the display device to show. 2、Controller: process the signal and calculate the distance and bearing between the vehicle and the obstacle. 3、Display or buzzer: When the sensor detects the distance of the car from the obstacle reaches a dangerous distance, the system will send out an alarm through the display and buzzer to remind the driver.