(1) Ultrasonic sensor is used to transmit and receive ultrasonic signals, which can complete distance measurement.
(2) The host sends a sine wave pulse to the ultrasonic sensor, processes the received signal, converts the distance value, and then transmits the data to the display.
(3) The display or buzzer is used to receive the distance data of the host computer, display the distance value according to the distance, and provide different levels of distance alarm sounds.
The working principle of the reversing radar is that the reversing radar is controlled by the host computer and the sensor emits ultrasonic signals. If there are obstacles, there will be echo signals. The sensor processes the received echo signal through the upper computer and judges the position of the obstacle. The display shows the distance and sends out other warning signals to get timely warning, so that the driver can know the specific situation when reversing, and it will be safer when reversing.