Siemens Aktiengesellschaft

Continental Automotive Gmbh

Michael Krempl

Gerhard Wild

Gerd Winkler

Hubert Melzl

Erwin Hetzenecker

Jürgen Zacherl

Peter Karges

A device and a method for detecting seat occupancy, with the device including first and second sensor elements associated with a respective seat surface. First and second weight-dependent sensor signals are electrically obtainable from the sensor elements. The seat occupancy is determined by taking either the first or the second sensor signals in dependence on an ambient temperature.

Device and method for detecting seat occupancy

In an occupant detection or classification system for a motor vehicle, a sensor mat () measures the pressure or pressure distribution on a seating surface. A control unit () receives the signals from the sensor mat () representing an occupancy of the vehicle seat. The temperature of the foam core () underlying the seating surface is measured at a location other than in the center of the foam core and, specifically, at the control unit ().

System and method for occupant detection and classification in motor vehicles

A circuit configuration recognizes the occupancy of a seat and triggers a seat belt 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.

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

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Ergoldsbach, Germany

Michael Krempl