Non-contact noise attenuation water flow system and method for detecting washing compliance
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United States of America Patent
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Jan 3, 2017
Grant Date -
Oct 30, 2014
app pub date -
Sep 28, 2012
filing date -
Sep 30, 2011
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Abstract
A low cost solution for detecting the flow of water in a sink using a non-contact vibration sensor coupled with a computer vision system and a passive switched RFID tag that becomes active upon detection of water flow. In some embodiments, the water flow forms an active antennae system for the RFID tag. The sensor comprises a piezo electric film attached at the underside of a water receptacle, for example, a sink so as to collect the sound generated by water splashing or hitting the sink and a vision system using active detection techniques.
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