NON-CONTACT NOISE ATTENUATION WATER FLOW SYSTEM AND METHOD FOR DETECTING WASHING COMPLIANCE
First Claim
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1. A liquid flow system for monitoring washing compliance comprising:
- a sensor disposed near or on a liquid dispenser to generate a vibration signal;
a modulator to modulate said vibration signal by amplification;
a comparator to determine if the modulated signal exceeds a threshold value, wherein the threshold value identifies liquid flow through an output voltage; and
a relay that is actuated using the output voltage.
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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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Citations
28 Claims
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1. A liquid flow system for monitoring washing compliance comprising:
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a sensor disposed near or on a liquid dispenser to generate a vibration signal; a modulator to modulate said vibration signal by amplification; a comparator to determine if the modulated signal exceeds a threshold value, wherein the threshold value identifies liquid flow through an output voltage; and a relay that is actuated using the output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15)
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9. A process for monitoring washing compliance comprising:
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registering a vibration signal generated from a sensor disposed near or on a liquid dispenser; modulating said vibration signal by amplification and creating a threshold value to identify liquid flow through an output voltage; and actuating a relay using the output voltage. - View Dependent Claims (10, 11, 12, 13, 14)
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16. (canceled)
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20. (canceled)
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21. A process for monitoring washing compliance utilizing a computer-based non-contact biometric identification system comprising:
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providing a recording of a user at a washing station; comparing the recording to stored recordings of users and washings; identifying the user based upon the comparing; and generating a report of the identifying of the user. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification