Seat occupancy sensor incorporated into a substrate and method of incorporating a wiring pattern into a substrate

摘要

A seat occupancy sensor for detecting the presence of a body or object, e.g. on a motor vehicle front seat, includes a soft and yielding substrate (4), on the top surface of which is provided a wiring pattern (7). The wiring pattern is comprised of a plurality of pairs of electrical wires (6a, 6b; 6a', ...). Each pair of electrical wires defines a capacitive element (6, 6', 6"). Each capacitive element is connected to a detector circuitry via a connecting wiring (10).