Integrating accelerometer capable of sensing off-axis inputs

Details Integrating accelerometer capable of sensing off-axis inputs Integrating accelerometer capable of sensing off-axis inputs

1994-10-11

1997-03-25

Gellner, Michael L.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, H01H 3514

Patent

active

056147007

ABSTRACT:
An accelerometer (10) features a housing (12) having an passage (14) of rectangular cross-section formed therein, the width dimension of which gradually increases with increasing displacement along a central longitudinal axis (16) away from a first end (24) of the passage; and a puck-shaped magnetic sensing mass (26) located within the passage whose magnetic axis extends in a direction normal to the basal surface (18) of the passage. A pair of magnetically-permeable elements (22) on the housing magnetically-interact with the sensing mass so as to bias the sensing mass towards a first position within the passage; and a first and second pair of stationary beam contacts (30) project into the passage so as to be bridged by respective electrically-conductive circumferential surfaces (28) on the sensing mass when it moves to a second position within the passage. A pair of electrically-conductive nonmagnetic plates (32) on the housing magnetically interact with the sensing mass to damp the movement thereof within the passage. A pair of horizontally-wound coils (36,38) provide both test and reconfiguration functions.

REFERENCES:
patent: 3774128 (1973-11-01), Orlando
patent: 5012050 (1991-04-01), Sewell
patent: 5028750 (1991-07-01), Spies et al.
patent: 5149925 (1992-09-01), Behr et al.

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