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Automatic faucet

  • US 5,758,688 A
  • Filed: 11/12/1996
  • Issued: 06/02/1998
  • Est. Priority Date: 12/20/1993
  • Status: Expired due to Term
First Claim
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1. An automatic faucet for starting and stopping discharging water automatically by detecting presence or absence of hands with a non-contact reflection type active sensor, which comprises:

  • sampling data means for sampling data indicative of reflective signal levels on the active sensor periodically;

    statistical calculating means for calculating at least one statistical value on the basis of a plurality of data from said sampling date means including updated data obtained by sampling; and

    means for determining the presence or absence of hands on the basis of the statistical value for starting and stopping water discharging.

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