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Human sensing (also called human detection or human presence detection) encompasses a range of technologies for detecting the presence of a human body in an area of space, typically without the intentional participation of the detected person. Common applications include search and rescue, surveillance, and customer analytics (for example, people counters). Modern technologies proposed or deployed for human sensing include:〔Teixeira, Thiago, et al. ("A Survey of Human-Sensing: Methods for Detecting Presence, Count, Location, Track, and Identity" )〕 * Acoustic sensors * Image recognition of human shapes * Infrared detectors * Pressure-sensitive floor tiles * Radar * Chemical sensors * Detection of the mobile phone, Bluetooth, or Wi-Fi signals of a device assumed to be in the possession of a person ==Examples== Various commercial heartbeat detection systems employ a set of vibration or seismic sensors to detect the presence of a person inside a vehicle or container by sensing vibrations caused by the human heartbeat.〔ENSCO, Inc. ("MicroSearch G3" )〕〔Geovox Security Inc. ("AVIAN Heartbeat Detector" )〕〔Intelligent Security Limited. ("Heartbeat - Human Detection System" )〕 Another commercial product uses infrared light to detect the level of carbon dioxide in an enclosed space, from which it infers the presence of humans or other living creatures.〔Armstrong Monitoring. ("Human Occupancy Detector" )〕 In September 2013, the United States Department of Homeland Security's Science and Technology Directorate demonstrated a prototype of the FINDER radar technology device, which it developed in conjunction with NASA's Jet Propulsion Laboratory.〔Press Office, Science and Technology Directorate, U.S. Department of Homeland Security. ("DHS Teams Up With NASA to Find Heartbeats in Rubble" ), 17 September 2013.〕 FINDER uses microwave radar to detect the unique signature of a human's breathing pattern and heartbeat, through 20 feet of solid concrete, 30 feet of a crushed mixture of concrete and rebar, and 100 feet of open space.〔Science and Technology Directorate, U.S. Department of Homeland Security. ("Detecting Heartbeats in Rubble: DHS and NASA Team up to Save Victims of Disasters" )〕 In September 2014, the DHS promoted the technology to SWAT teams at the Urban Shield trade show.〔Pilkington, Ed. ("Urban Shield: after Ferguson, police and suppliers consider fate of military-grade tactical gear" ), ''The Guardian'', 8 September 2014.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Human sensing」の詳細全文を読む スポンサード リンク
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