Displaced position detecting device

Details Displaced position detecting device Displaced position detecting device

1979-02-23

1980-12-09

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Plural transmitters to receiver or transmitter to plural...

367 96, 367127, 367902, 367908, G01S 1508

Patent

active

042388449

ABSTRACT:
A device which detects a displaced position by generating an ultrasonic signal in a magnetostrictive wire and measuring the propagation time of the signal generated. The device includes an exciting means to generate an ultrasonic signal in a magnetostrictive wire, first and second receiving means to receive the ultrasonic signal generated in the magnetostrictive wire by the exciting means, a means for changing the distance between the exciting means and each of the first and second receiving means in accordance with a mechanical displacement, and a circuit means for producing a signal representative to the time periods required for the generated ultrasonic signal to reach the first and second receiving means.

REFERENCES:
patent: 4035762 (1977-07-01), Chamuel
patent: 4144574 (1979-03-01), Chamuel

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