Measurement arrangement for seat occupancy detection in motor car improved to enable detection with relatively weak stimulation signals

摘要

The measurement arrangement has at least one sensor (1.1-1.3,2.1-2.3) for generating a measurement signal, at least one signal generator (3) for stimulating the sensor with a stimulation signal and at least one evaluation unit (8) for evaluating the measurement signal and forming a reference for the signal generator. The frequency of the stimulation signal is matched to the sensor bandwidth; it is essentially the same as the sensor's bandwidth.