A Temperature Compensated Ultrasonic Sensor Operating in Air for Distance and Proximity Measurements

1 January 1982

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industrial Electronics

Vol. IE-29 (4) , 336-341
https://doi.org/10.1109/tie.1982.356688

Abstract

An ultrasonic sensor operating in air was developed to measure distance (up to 100 cm) or to operate as a proximity sensor in a presettable distance range. The error in the measured distance is about ±1 mm while the accuracy is maintained within ±1 percent of the reading in the whole temperature range from -20°C to +110°C, being the temperature dependence of the sound velocity electronically compensated. As a proximity sensor it can overcome most of the drawbacks and limitations of inductive, capacitive, optical, and Hall-effect commercial proximity sensors.

Keywords

This publication has 2 references indexed in Scilit:

Prime sensors for electronic automotive-engine control
IEEE Transactions on Vehicular Technology, 1977
A single-chip monolithic sonar system
IEEE Journal of Solid-State Circuits, 1974