Circuit configuration for recognizing the occupancy of a seat and seatbelt warning in a motor vehicle

A circuit configuration recognizes the occupancy of a seat and triggers a seatbelt warning in a motor vehicle. Resistance elements are disposed in a separated and flat manner on a motor vehicle seat, in particular on a sensor seating mat, which alters the resistance values when a force is exerted th...

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Bibliographische Detailangaben
Hauptverfasser:	KREMPL MICHAEL, MELZL HUBERT, KARGES PETER, WILD GERHARD
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES ORDER TELEGRAPHS PERFORMING OPERATIONS PHYSICS SEATS SPECIALLY ADAPTED FOR VEHICLES SIGNALLING SIGNALLING OR CALLING SYSTEMS TESTING TRANSPORTING VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WEIGHING
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Beschreibung
Zusammenfassung:	A circuit configuration recognizes the occupancy of a seat and triggers a seatbelt warning in a motor vehicle. Resistance elements are disposed in a separated and flat manner on a motor vehicle seat, in particular on a sensor seating mat, which alters the resistance values when a force is exerted thereon, for example, perpendicular to the surface of the vehicle seat, or by bending. The weight-sensitive resistance elements contain first resistance elements and additional resistance elements, and the resistance values thereof can be measured in respectively different measuring circuits without the measuring results for the first resistance elements influencing the measuring results for the additional resistance elements.