Measuring and testing – Vibration – Sensing apparatus
Patent
1977-03-04
1978-04-11
Queisser, Richard C.
Measuring and testing
Vibration
Sensing apparatus
250573, G01H 310
Patent
active
040832554
ABSTRACT:
A vibration sensing and measuring system is disclosed as including a series connected signal generator, vibration sensor adapted for being connected to any appropriate compatible object from which the vibration information and/or parameters analogous thereto are desired, and utilization apparatus - such as, for example, a readout - for indicating or otherwise utilizng the measured vibrations of said vibrating apparatus. When the aforesaid object vibrates, said sensor vibrates in synchronism therewith; thus a liquid disposed therein is disturbed in such manner as to cause standing waves at the surface thereof that are proportional thereto. The reception by a photodiode (located in said sensor) of light broadcast in a given amount along and in contiguous disposition with the surface of said liquid by a light emitting diode (likewise located in said sensor) is reduced in accordance with the aforesaid standing waves thereof and, by calibration, constitutes a measure of the vibration of said sensor and, hence, the object to which it is connected.
REFERENCES:
patent: 1082014 (1913-12-01), Digby et al.
patent: 3159024 (1964-12-01), Tsien
patent: 3404282 (1968-10-01), Walker
patent: 3908129 (1975-09-01), Akers
S. Z. Dushkes et al., Measuring Small-Amplitude, High Frequency Motions, Technical Disclosure Bulletin, vol. 12, No. 4, Sept. 69.
Beauchamp John P.
Doty Don D.
Queisser Richard C.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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