Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1979-04-13
1981-01-06
Gill, James J.
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
73517R, G01P 1508
Patent
active
042429102
ABSTRACT:
A monitoring system comprises a sensor responsive to acceleration in a predetermined plane and an electronic circuit responsive to the sensor for indicating details of the acceleration. The sensor has a float structure immersed in liquid in a casing and mounted for pivotal movement when the sensor is subjected to acceleration in the predetermined plane. The float structure has a pair of spaced floats having centers of bouyancy above and one on each side of an axis of rotation for biassing the float structure to a datum position. Openings are provided in the float structure at different angular positions about the axis of rotation.
The electronic circuit has detectors located in the casing with components on opposite sides of the structure for operating in a first mode when the float structure is interposed between the components and in a second mode when an opening is between the components so that the circuit will indicate differing degrees of acceleration in dependence on the degree of movement of the float structure.
Two sensors may be provided at right angles to one another to indicate acceleration in two directions.
REFERENCES:
patent: 3234394 (1966-02-01), Worden
patent: 3643513 (1972-02-01), Weaver
patent: 3798454 (1974-03-01), Weiss
patent: 4034481 (1977-07-01), Stoltz
patent: 4159577 (1979-07-01), Bergkvist
C.W.M. Du Toit Beleggings (Eiendoms) Beperk
Gill James J.
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