What is the relationship between the beeping sound of a parking sensor and the distance?
1 Answers
The settings of parking sensors vary across different vehicle models. Generally, the louder and more frequent the beeping sound of the parking sensor, the closer the vehicle is to an obstacle, indicating the need for increased caution. The parking sensor mainly consists of ultrasonic sensors, a controller, and a display. The parking sensor system operates on the principle of ultrasonic distance measurement. Ultrasonic waves emitted by probes installed on the rear bumper hit an obstacle and reflect back. When encountering an obstacle, an echo signal is generated. The sensor receives the echo signal, which is then processed by the controller to determine the obstacle's location. The display shows the distance and issues a warning signal, providing timely alerts. This enables the driver to park or reverse with confidence, making reversing safer and easier. The ultrasonic sensors of the parking sensor are installed on the rear bumper, typically positioned 50 to 60 centimeters above the ground. The ultrasonic waves emitted by the probes spread outward in a horn-shaped pattern, gradually expanding the coverage area. From the ground to the bottom of the probe, a triangular blind spot is formed directly below the probe. The taller the vehicle, the larger the blind spot. Obstacles below 100-150mm from the center of the probe are difficult for the probe to detect.
