CAPACITIVE SENSING IN VEHICLES

摘要

A passenger sensing system of electrodes (12) in varying configurations. Electrodes (12) can be positioned proximate an airbag door (44), each providing a signal corresponding to occupant proximity, and a comparator for comparing the signals employed to make better decisions than with a single signal. Electrodes (12) may be formed on a dielectric substrate (16) and separated by a grounded area (14) configured to block line-of-sight between each of the electrodes (12). Electrodes (12) may be formed of conductive material attached to dielectric material with a conductive coating on one surface. Electrodes (12) may be embedded within a vehicular trimpiece (72) and adjacent to a conductive material connected to ground, and a DC voltage is applied to one electrode to form a conductive path to a second electrode, the conductive path being formed by moisture. A drive electrode (22) and a receive electrode (26) may be formed integrally with a vehicle window (34).