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US 5,627,375 AGranted
Circuit arrangement for a sanitary apparatus
OwnerChin-Hua Hsiehinventor
Life of this patent
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Abstract
A circuit arrangement for controlling a sanitary device in a non-contact manner includes a pyroelectric sensing circuit for detecting a temperature in a predetermined location and outputting a signal, a microprocessor for receiving a signal from the pyroelectric sensing circuit and outputting a triggering signal when the signal received by the microprocessor is judged as a result of body heat, a driving circuit for receiving the triggering signal and actuating a motor-operated control valve.
Claims7
A circuit arrangement for controlling a sanitary device in a non-contacting manner, comprising:
- a pyroelectric detecting means for detecting heat radiating from a human body part within a predetermined location and outputting a signal in response to such detection;
- a programmable means for:
- receiving the signal from the pyroelectric detecting means;
- converting the received signal into a corresponding digital data;
- reading the converted digital data in bytes;
- logically exclusively ORing two sequential bytes and acquiring a resultant byte;
- and
- outputting a triggering signal from an output terminal thereof when two sequential resultant bytes have three "1" bits or more;
- and
- a driving means for receiving the triggering signal from the programmable means to activate a valve in the sanitary device.
7 more elements
Dependencies are inferred from the claim text.