Fiber optical devices for measuring physical phenomenon

Details Fiber optical devices for measuring physical phenomenon Fiber optical devices for measuring physical phenomenon

1979-11-14

1982-08-24

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

73653, 73702, 374117, G01L 110

Patent

active

043454828

ABSTRACT:
The invention relates to a fiber optical device for measuring physical magnitudes such as force, elongation, pressure, acceleration, temperature, etc., comprising a transducer unit and an electronic unit, in which the quantity to be measured is supplied to the transducer unit to affect the resonance frequency of an oscillating body included in the tansducer unit by changing the dimensions, mass, density, modulus of elasticity and/or mechanical stress of the body. A property of the body oscillation, such as frequency, phase position and/or amplitude, is used as a value of the quantity to be measured. The oscillations of the body are detected optically by means of a fiber optical position/movement detector.

REFERENCES:
patent: 3036465 (1962-05-01), Dicke
patent: 3831137 (1974-08-01), Cuomo
Zak, et al., Measurement Techniques vol. 19, No. 5, pp. 698-700, May 1976.

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