Solid-state micro proximity sensor

Details Solid-state micro proximity sensor Solid-state micro proximity sensor

1994-07-26

1996-04-30

Regan, Maura K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324663, 361278, 361280, G01R 2726

Patent

active

055128360

ABSTRACT:
A solid-state fringe effect capacitive proximity sensor is described which lends itself to use for surface mounting and other space constrained applications. The sensor comprises an insulating substrate having a plurality of sensing electrodes formed thereon and without any screen elements therebetween. The electrodes are adapted to measure the proximity distance of a target object (conductive or non-conductive) by means of the fringe capacitance effect created between the electrodes. Capacitance measurement processing circuitry is electrically connected to the plurality of sensory electrodes.

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