Electro-mechanical transducers

Details Electro-mechanical transducers Electro-mechanical transducers

G - Physics

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G01P 15/08 (2006.01) G01C 9/20 (2006.01) G01D 5/30 (2006.01) G01H 9/00 (2006.01) G01P 15/093 (2006.01)

Patent

CA 1133275

ELECTRO-MECHANICAL TRANSDUCER ABSTRACT OF THE DISCLOSURE An electro-mechanical transducer is disclosed for measuring physical parameters such 25 vibration, acceleration or the angular orientation of an object to which it is attached. A closed container partially filled with a fluid, has a light source and light detector mounted in optical communication with the container's interior. The arrangement of the detector and light source is such that light from the source must pass at least once through the surface (i.e., air- fluid interface) of the fluid before being detected. A constant incident light intensity is provided within the chamber and the resultant transmitted light is measured by the detector and an associated meter cir- cuit. As the container is vibrated, or the angular relationship of the surface of the liquid with respect to the detected light rays is varied, the light trans- missive and refractive properties of the liquid surface are altered, thereby altering the output or the light detector.

328552

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