How Do Ultrasonic Sensors Work?

Overview

Ultrasonic sensors use high-frequency sound and echo timing to detect objects and calculate distance. By measuring the round-trip travel time of a sound pulse, these devices can determine how far away a target is without physical contact. In this video short, see how ultrasonic transmitters, receivers, and transceivers differ, what supporting electronics are required, and why appearance alone is not enough to identify a sensor type.

Explore Same Sky’s ultrasonic sensors for presence detection or distance measurement.