OCCUPANCY DETECTION DEVICE FOR DETECTING OCCUPANCY OF A SEAT IN A MOTOR VEHICLE

摘要

The invention relates to an occupancy detection device for detecting an occupancy of a seat of a motor vehicle. The occupancy detection device comprises an electric resonant circuit which includes a first and a second inductance and at least one sensor element; means for charging the resonant circuit with an alternating voltage; means for determining at least one electrical parameter in the resonant circuit (2), wherein the electric resonant circuit experiences a change due to a change of the surroundings of the sensor element, so that with reference to the determined electrical parameter an occupancy of the seat can be detected; and a first and a second terminal, via which a heater control can be connected with the occupancy detection device, in order to be able to simultaneously operate the sensor element as heater. The first and the second terminal are arranged such that a direct current provided at these terminals by the heater control is supplied to the sensor element via the first and the second inductance.