Ultrasonic Sensors

"Ultrasonic rangefinders measure the time for a pulse of sound to travel to a surface and return, then calculate distance from the estimated speed of sound."

This tutorial gives an overview of ultrasonic distance measurement. It starts with a brief description of what the technique does and typical applications. Further detail is then given on how ultrasonic systems work, and some of their benefits and limitations.


Tech Brief - Ultrasonic Sensors (PDF 137KB)


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