Capacitive sensor for determining linear or angular position
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United States of America Patent
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May 23, 2006
Grant Date -
N/A
app pub date -
Mar 4, 2005
filing date -
Mar 4, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
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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