US Patent 7598881 Sensor and circuit configuration for occupant detection

In occupant detection systems, direct connections, such as fixed or permanent connections, are provided between the antenna and measurement circuit and between the measurement circuit and wiring harness. Multiple such arrangements may be used for capacitive, electric field, or other types of occupant detection circuits. In some embodiments, the occupant detection is split between a measurement circuit and a processor. For multiple sensors, multiple measurements circuits are provided with direction connections. The processor determines the occupancy state from data from the measurement circuits. The direction connections provide separate, unitary measurement modules to be used by the occupancy system.