Ultrasonic parking sensors
Automotive ultrasonic parking sensors sit in the bumper and measure the distance to obstacles while a vehicle parks. DWIN builds LIN-bus sensors for OEM park-assist systems, hostless sensors that need no separate ECU, and sensors for automated valet parking.
3 models
How it works
Each sensor drives a piezoelectric membrane at an ultrasonic frequency, typically around 40 to 58 kHz, and listens for the echo. The time of flight gives the distance. Several sensors around the bumper are fired in sequence so the park-assist controller can locate an obstacle by triangulation.
How to choose
- Bus: LIN for networked OEM systems, or a hostless sensor when you want no ECU
- Detection field: horizontal and vertical beam angle for the bumper position
- Housing colour and bezel to match the paint
- Operating voltage: 12 V or 24 V vehicle systems
Frequently asked questions
What is a hostless parking sensor?
A hostless parking sensor carries its own processing, so it signals obstacles without a separate parking ECU. It cuts wiring and cost on vehicles that do not need a full park-assist controller.
Why use LIN-bus parking sensors?
LIN lets every sensor share one bus wire to the controller, reports diagnostics, and allows the controller to configure each sensor. It is the standard for current OEM park-assist systems.