发明名称 |
METHOD AND DEVICE TO SECURELY OPEN AND CLOSE A PASSAGEWAY OR ACCESS POINT |
摘要 |
An access control system for a passageway having a passageway barrier including an active infrared sensor device and a locking mechanism for selectively locking and unlocking the passageway barrier. The active infrared sensor device includes an infrared emitter, an infrared receiver having one or more position-sensing photodetectors operative for receiving infrared light and generating a signal corresponding to a position and/or intensity of the reflected infrared light, and a processing unit operative for detecting a change between a first signal generated by one or more position-sensing photodetectors after receiving reflected infrared light at a first location on one or more position-sensing photodetectors and a second signal generated by one or more position-sensing photodetectors after receiving infrared light reflected in response to the object moving into the surveillance area and for controlling an operation of a locking mechanism based on the change. |
申请公布号 |
US2012127317(A1) |
申请公布日期 |
2012.05.24 |
申请号 |
US201113297301 |
申请日期 |
2011.11.16 |
申请人 |
YANTEK THOMAS MICHAEL;CRADDOCK TIMOTHY U.;GIANETTINO ANTHONY KENNETH;MULCAHY JOSEPH MARK;WICKMAN RANDY WILLIAM;BEA, INC. |
发明人 |
YANTEK THOMAS MICHAEL;CRADDOCK TIMOTHY U.;GIANETTINO ANTHONY KENNETH;MULCAHY JOSEPH MARK;WICKMAN RANDY WILLIAM |
分类号 |
H04N7/18 |
主分类号 |
H04N7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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