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How Does a Parking Sensor Work?

1 Answers

MargaretAnn

07/30/25 2:30am

The working principle of a parking sensor involves the use of ultrasonic signals. Controlled by the microcomputer inside the parking sensor host, the signals are transmitted and received by the probes. By comparing the time it takes for the signals to return, the distance to an obstacle is calculated, and then the alarm emits different warning sounds accordingly. A parking sensor consists of components such as ultrasonic sensors, a controller, and a display. It informs the driver about surrounding obstacles through sounds or more intuitive visual displays, alleviating the difficulties caused by the driver having to look around while parking, reversing, or starting the vehicle. It also helps eliminate blind spots and unclear vision, thereby enhancing driving safety. Precautions for using parking sensors: The display of the parking sensor is mounted on the rearview mirror, continuously reminding the driver of the distance to objects behind the vehicle. When reaching a dangerous distance, the buzzer starts beeping, with the frequency and urgency of the beeps indicating the proximity of the obstacle, prompting the driver to stop in time. When the gear lever is shifted into reverse, the parking sensor automatically activates, with a detection range of approximately 0.2 to 1.8 meters, making it highly practical for drivers during parking.

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