Patent ID: 9650064
Date: 2017-05-16
CPC Classifications: A47C,B60N,B60R,B62D,H05B,Y10T

Claim:
1. An occupancy detection device for detecting an occupancy of a seat of a motor vehicle, comprising 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; and a microcontroller and a peak-to-peak detector, wherein the microcontroller and the peak-to-peak detector are used to determine a resonance frequency or a resonance amplitude in the resonant circuit, wherein the electric resonant circuit experiences a change in the resonance frequency or the resonance amplitude due to a change of the surroundings of the sensor element, so that 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, wherein 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.