Occupancy sensor that measures electric current through a heating element

An occupancy sensor has three layers. The bottom layer contains two electrodes, and a resistive element between the electrodes. The middle layer is a spacer. The top layer is a third electrode, divided into two parts. When a person sits on the sensor, both parts of the third layer contact the resist...

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Bibliographische Detailangaben
Hauptverfasser:	ZUZGA MATTHEW, RAUH HANS-GEORG, DORN RICHARD, IQBAL SYED, SPASOJEVIC IGOR
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION COSMONAUTICS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS PARACHUTES PERFORMING OPERATIONS SEATS SPECIALLY ADAPTED FOR VEHICLES TRANSPORTING VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	An occupancy sensor has three layers. The bottom layer contains two electrodes, and a resistive element between the electrodes. The middle layer is a spacer. The top layer is a third electrode, divided into two parts. When a person sits on the sensor, both parts of the third layer contact the resistive element. This causes current to flow through all of the electrodes. Accordingly, occupancy can be detected by measuring current flow through the electrodes. The device additionally provides heating via the resistive element. The sensor can be arranged in a vehicle seat.