Distance sensing apparatus

Details Distance sensing apparatus Distance sensing apparatus

1985-07-12

1988-03-15

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 99, 367112, 367 95, G01S 968

Patent

active

047317620

ABSTRACT:
Apparatus for sensing distances in air by transmitting an ultrasonic pulse and measuring the time for return of an echo from a target object is characterized by ability to measure distances to multiple target objects. Preferably the apparatus defaults by displaying the distance to the nearest target but is provided with a push button which when pressed once causes display of the distance to the next target further away, when pressed again causes display of distance to a target after that and so forth. This novel function may be accomplished by discrete logic components or using a microprocessor.

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patent: 4574368 (1986-03-01), Lipschutz
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