Driven shielding capacitive proximity sensor
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United States of America Patent
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Nov 24, 1992
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N/A
app pub date -
Jun 6, 1991
filing date -
Jun 6, 1991
priority date (Note) -
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Abstract
A capacitive proximity sensing element, backed by a reflector driven at the same voltage as and in phase with the sensor, is used to reflect the field lines away from a grounded robot arm towards an intruding object, thus dramatically increasing the sensor's range and sensitivity.
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