Measuring and testing – Vibration – Sensing apparatus
Patent
1995-12-07
1997-07-29
Williams, Hezron E.
Measuring and testing
Vibration
Sensing apparatus
356351, G01B 902
Patent
active
056523904
ABSTRACT:
The method and the device for autonomous measurement of a movement are implemented based on a resonator with a coherent radiation. There is measuring of the interference signal of the extracted non-identical components of the radiation of the resonator. The resonator, the systems for the extracting and the coupling of these components and a receiver of the radiation are disposed motionless each other.
This method based on the new physical effect. The effect consists in the altering of the polarization of the coherent radiation in a resonator due to the movement of the resonator with reference to an inertial system.
The measurement of the movement is possible due to the phase modulation of each of the non-identical components of the radiation that takes place when the resonator is moving. This modulation is the result of the additional complex component of the phase of the standing wave that induces during the movement of the resonator.
There is the moving interference pattern that appears on the receiver during the movement. The signal of the intensity of this interference pattern is defined by the acceleration of the movement of the Autonomous Resonatory Sensor and by its geometry.
The implementation of the ARS shows measuring resolution better than 0,001 m/sec.sup.2.
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Moller Richard A.
Williams Hezron E.
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