An apparatus (47) determines presence, type, and a size value of a vehicle occupant (14) located within a vehicle (12). A first capacitive sensor (46A) is located on a first side of an occupant location within the vehicle (12) and senses a first capacitance value. An associated drive/monitor circuit...http://www.google.com.hk/patents/US6158768?utm_source=gb-gplus-share專利 US6158768 - Apparatus and method for discerning certain occupant characteristics using a plurality of capacitive sensors
