Ultrasonic Proximity Sensors as Park Distance Control

Active park distance controls in passenger cars often use ultrasonic proximity sensors to determine the distance to the surroundings.

To this end, several ultrasonic piezo transducers are integrated into the bumpers, which send and receive ultrasonic signals and transmit the acquired data to the control unit, which will then calculate the distance between the sensor and the obstacle from the propagation time of the ultrasonic signal. The higher the number of sensors, the more precise and reliable the measurement result.

As in >> Air Ultrasound, the distance measurement is based on the principle of propagation time measurement. The sensors use the direct as well as the >> Invers Piezoelectric Effect.

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Catalog: PI Piezoelectric Ceramic Products

Fundamentals, Characteristics and Applications
pdf - 10 MB
pdf - 10 MB