Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
Passenger sensing system
 A background heat source unit 4 having a plurality of heat sources, which are arranged substantially at a fixed interval and set to a temperature different from the body temperature of passenger and also from the ambient temperature, and an infrared sensor 7, are disposed such that they face each other via a passenger. Whether a passenger is present is checked according to the result of a check, made by comparing a detected temperature pattern of the background heat source unit 4, detected by the infrared sensor 7, and a reference temperature pattern of the background heat source unit 4, preliminarily stored in a control circuit 17, as to whether a non-identical area is present in the compared temperature patterns. 
NEC Corporation
B B B
B60N B60R B60R
inventional inventional inventional
Keiji Junshiro Naoki Masahiko
Miyamoto Motoyama Oda Sano