How to Measure Distance with Parking Sensors?

[LaElliana]

Distance is judged by sound. Here is an introduction to the method of judging distance with parking sensors: 1. The alarm emitted by the parking sensor is a certain frequency of "beep" sound, and the frequency will become faster and faster as the obstacle approaches. Since the settings of parking sensors vary for different car models, there is no one-size-fits-all answer, and it can only be gradually figured out over time. However, one thing is the same for all car models: when the "beep" sound frequency becomes faster and faster and eventually turns into a continuous sound, it means that the parking distance has almost reached its limit. 2. Parking sensors generally consist of three parts: ultrasonic sensors, a controller, and a buzzer. During operation, the ultrasonic sensors emit ultrasonic waves outward. When the ultrasonic waves hit an obstacle, they are reflected back and received again by the ultrasonic sensors. The controller then calculates the actual distance of the obstacle based on the time it takes for the ultrasonic waves to be emitted and received. Finally, the buzzer emits a rapid alarm sound to alert the driver to the distance of the obstacle.