Preloaded linear beam vibration sensor

Details Preloaded linear beam vibration sensor Preloaded linear beam vibration sensor

1996-10-08

1997-07-01

Chapman, John E.

Measuring and testing

Vibration

Sensing apparatus

7351432, 7351437, G01P 15125, G01H 1106

Patent

active

056440863

ABSTRACT:
An miniaturized accelerometer having a narrow bandwidth and behaving as a switch sensitive only to low frequencies such as contained in earthquakes includes: a unbalanced see-saw beam assembly composed of beams 2 and masses 3 at opposite ends of the beams 2. The beams 2 have their suspension at a location with slightly different distances from the masses 3 along a line parallel to and vertically offset from the line connecting centers of gravity of the masses 3.

REFERENCES:
patent: 3498138 (1970-03-01), Stewart
patent: 4736629 (1988-04-01), Cole

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