Optical vibration sensor

Details Optical vibration sensor Optical vibration sensor

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

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