Device for detecting presence or absence of occupant in passenger compartment of vehicle

摘要

The present invention relates to a capacitive measurement device (2) within a vehicle for detecting the presence or absence of a passenger in a vehicle, and the deviceThe first electrode (20) is separated from the second electrode (21) by a dielectric material (22) to form a capacitive sensor and the capacitive sensor is disposed on the surface of the vehicle componentA voltage generator (23) disposed to generate an AC voltage between the first and second electrodes (20, 21);A current measurement circuit (24), disposed to measure current between the second electrode and the exposed conductive portion of the vehicle, wherein the presence of the occupant near the component is a function of the measurement current.Diagram