초록 ▼

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

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.

대표청구항 ▼

A displaced position detecting device comprising: a wire composed of a magnetostrictive material; first and second receiving means coupled to said magnetostrictive wire; an exciting means for applying an exciting signal to the wire and disposed between the first and second receiving means; means for

A displaced position detecting device comprising: a wire composed of a magnetostrictive material; first and second receiving means coupled to said magnetostrictive wire; an exciting means for applying an exciting signal to the wire and disposed between the first and second receiving means; means for changing the distance between the exciting means and at least one of said receiving means in accordance with a mechanical displacement; means for developing two signals representing the time periods required for said exciting signal to reach the first and second receiving means respectively; and circuit means responsive to said two signals for producing a signal representative of said mechanical displacement.