Capacitive sensor for determining linear or angular position

Details Capacitive sensor for determining linear or angular position Capacitive sensor for determining linear or angular position

2006-05-23

2006-05-23

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S515000, C324S658000, C324S660000, C324S663000

Reexamination Certificate

active

07049828

ABSTRACT:
A capacitive sensor includes an electrode member with two spaced-apart electrodes and an air gap therebetween. A position reference plate, which can be straight for sensing linear position or curvilinear for sensing angular position, is disposed in the air gap, with the electrode member being attached to a moving component and the reference plate mounted on a stationary object or vice-versa. The reference plate is formed with an opening, the width of which varies throughout the length of the opening, so that the capacitance between the electrodes varies depending on the position of the plate relative to the electrode member.

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patent: 6823747 (2004-11-01), Hasegawa et al.

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