SEATED STATE DETECTOR

PURPOSE:To provide a seated state detector which can judge the seated state of a seat quickly and stably. CONSTITUTION:A transmission pulse signal 21 from a pulse generation part 11 is outputted as infrared rays from an LED3 via a modulation part 1 and an LED drive part 2, where the infrared rays re...

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Bibliographische Detailangaben
Hauptverfasser:	KATO HARUHIKO, MOROI MOTOKI, KOBAYASHI TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES COFFEE MILLS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DOMESTIC ARTICLES OR APPLIANCES FIXED CONSTRUCTIONS FLUSHING VALVES THEREFOR FURNITURE HUMAN NECESSITIES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR SEWERAGE SPICE MILLS SUCTION CLEANERS IN GENERAL TESTING TOILET ACCESSORIES WATER SUPPLY WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a seated state detector which can judge the seated state of a seat quickly and stably. CONSTITUTION:A transmission pulse signal 21 from a pulse generation part 11 is outputted as infrared rays from an LED3 via a modulation part 1 and an LED drive part 2, where the infrared rays reflected from a human body are detected by a light reception sensor 4, are inputted to a pulse judgment part 14 via an amplification part, a filter 6, and a waveform shaping part 7 in that only pulses within a period synchronized with the transmission pulse signal 21 are outputted as a reception pulse signal 25. The number of pulses of the transmission pulse signal 21 and the reception pulse signal 25 are counted by a transmission pulse count part 13 and a reception pulse count part 15 and seated and non-seated are judged based on a pulse detection efficiency indicating the ratio of the number of reception pulses for the number of transmission pulses by a comparison judgment part 16.