Apparatus for sensing and locating vibrations

Details Apparatus for sensing and locating vibrations Apparatus for sensing and locating vibrations

1981-11-05

1984-08-21

Gill, James J.

Measuring and testing

Vibration

Sensing apparatus

340566, 200 6147, 73516LM, G01H 100

Patent

active

044662882

ABSTRACT:
A protective system employing vibration sensors for indicating the location of a vibration or of tampering with the system. There is employed a vibration sensor comprising first apparatus operative when the sensor is oriented in a first range of orientations for providing a momentary first impedance condition in response to vibration of at least a predetermined strength and second apparatus operative when the sensor is oriented in a second range of orientations for providing a steady state second impedance condition.

REFERENCES:
patent: 1230787 (1917-06-01), Robison et al.
patent: 2161411 (1939-06-01), Erich
patent: 4334218 (1982-06-01), Kun

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