Moisture detecting system using semiconductor light sensor with integral charge collection
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United States of America Patent
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Oct 22, 2002
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N/A
app pub date -
Sep 18, 2001
filing date -
Jan 25, 1999
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Abstract
Moisture detection permits moisture removal equipment, such as automotive windshield wipers and defogger systems, to be operated automatically. A system for detecting moisture on a surface includes a light emitter directed at the surface. The presence of moisture is based on the intensity of light from the emitter reflected by the surface and received by a light sensor. The light sensor accumulates charge in response to incident light over a variable integration period.
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