Measurement of the position of an elongated element

Details Measurement of the position of an elongated element Measurement of the position of an elongated element

1989-06-07

1991-02-26

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

324645, G01N 2200

Patent

active

049964917

ABSTRACT:
The linear position of an elongated element (1) is measured using a transmission medium (2). The transmission medium comprises an emitter (3) of microwaves and a receiver (4) of microwaves and has at its one end the elongated element (1) and at its other end an electrical short-circuit (23). An asymmetrical sawtooth standing wave with substantially linear flanks is generated by reflection of the microwaves on the short-circuit (23) and on the elongated element (1). The position of the elongated element is determined by measuring the amplitude of the longer flank of the standing wave with the receiver. The method may be used in difficult circumstances and is suitable to measure mechanical vibrations of high-frequency.

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G. Biezunski, "Du Monde Entier de Pologne: Utilisation des Hyperfreqhences en Instrumentation, Mesures Regulation Automatisme," vol. 35, nr. 1/2, Jan./Feb. 1970, pp. 122-126.

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