Vibration detector

Details Vibration detector Vibration detector

1977-10-11

1979-05-08

Ciarlante, Anthony V.

Measuring and testing

Vibration

Sensing apparatus

G01P 1508

Patent

active

041529405

ABSTRACT:
A vibration detector having a pendulum, means for sensing the vibration of the pendulum, and a means for damping the vibration of said pendulum has been found. The pendulum has a light source which provides a parallel light beam, and the parallel light beam focuses at a light receiving plane. A beam sensor mounted at the light receiving plane, said beam sensor having a plurality of cells, senses the presence of the light beam on each cell. The parallel light beam illuminates the specific cell depending upon the vibration of the pendulum, and the illuminated cell provides an electric output signal indicating the reception of the beam. Thus, the vibration is detected as the electrical output of each cell. The relationship of the light beam and the light receiving plane can be inversed, that is to say, the light beam can be fixed and the light receiving plane can be mounted on the pendulum.

REFERENCES:
patent: 3224279 (1965-12-01), Galli et al.
patent: 3961185 (1976-06-01), Brokenshire et al.
J. I. Hamrick et al., Optical Displacement Measuring Device, IBM Technical Disclosure Bulletin, Dec. 1961, vol. 4, No. 7, p. 85.

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