Acceleration sensor

Details Acceleration sensor Acceleration sensor

1991-11-18

1993-03-23

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, H01H 3514

Patent

active

051966603

ABSTRACT:
An accelerator sensor comprising a cylinder of a conductive material, a magnetized inertial member mounted in the cylinder so as to be movable longitudinally of the cylinder, a conductive member mounted at least on one end surface of the inertial member that faces a first longitudinal end of the cylinder, a pair of electrodes disposed at the first longitudinal end of the cylinder, and an atracting member disposed near the other longitudinal end of the cylinder. When the conductive member of the inertial member comes into contact with the electrodes, these electrodes are caused to conduct via the conductive member. The attracting member is made of a magnetic material such that the attracting member and the inertial member are magnetically attracted toward each other. The sensor further comprises a coil for testing the operation of the sensor and an another coil capable of biasing magnetically the inertial member to compensate operation of the cylinder due to temperature.

REFERENCES:
patent: 4093836 (1978-06-01), Ewy et al.
patent: 4827091 (1989-05-01), Behr
patent: 4933515 (1990-06-01), Behr et al.

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