Measuring and testing – Vibration – Sensing apparatus
Patent
1983-07-01
1984-09-18
Birmiel, Howard A.
Measuring and testing
Vibration
Sensing apparatus
73657, 350358, G01N 2900, G01H 900
Patent
active
044716591
ABSTRACT:
A vibration sensor is formed by coupling the vibration to be sensed to change the positional relationship between grating means and light beams so that the resultant variations in light intensity of the beams beyond the grating means vary with a function of the sine and cosine of the positional change. This allows the detection of the vibrationover a wide range of frequencies and amplitudes.
REFERENCES:
patent: 4321464 (1982-03-01), Miller
patent: 4422167 (1983-12-01), Shajenko
patent: 4450541 (1984-05-01), Tietjen
Cahill Richard F.
Udd Eric
Birmiel Howard A.
Finch George W.
McDonnell Douglas Corporation
Royer Donald L.
Scholl John P.
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