CAPACITIVE SENSING AND HEATING SYSTEM FOR STEERING WHEELS OR SEATS TO SENSE PRESENCE OF HAND OF OCCUPANT ON STEERING WHEEL OR OCCUPANT IN SEAT

A system including an assembly arranged in at least one of a seat and a steering wheel of a vehicle and a measurement circuit. The assembly includes a sensor and a heater arranged adjacent to the sensor. The measurement circuit is configured to output an excitation signal to the measurement circuit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NORMAND, Tim, MARTON, Peter, CHEAH, Daniel Wei Li, LAKATOS, Robert, MAASS, Michael, FERNANDEZ, Gerardo Edel de la Garza, BARFUSS, Jack, GONZALEZ, Ricardo Edmundo Flores
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BASIC ELECTRONIC CIRCUITRY DETECTING MASSES OR OBJECTS ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MOTOR VEHICLES PERFORMING OPERATIONS PHYSICS PULSE TECHNIQUE SEATS SPECIALLY ADAPTED FOR VEHICLES TARIFF METERING APPARATUS TESTING TRAILERS 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:	A system including an assembly arranged in at least one of a seat and a steering wheel of a vehicle and a measurement circuit. The assembly includes a sensor and a heater arranged adjacent to the sensor. The measurement circuit is configured to output an excitation signal to the measurement circuit and the assembly and measure a resonant frequency of the measurement circuit and the assembly in response to the excitation signal. The measurement circuit is configured to determine a capacitance value based on the resonant frequency and determine whether a body part is in proximity to the sensor based on the capacitance value.