发明名称 |
Alert condition system usable for personnel monitoring |
摘要 |
To generate an alert signal indicating that an unauthorized subject is in a first region within seven feet of a passageway, a radio transmitter is worn by the subject and received by a receiver at the passageway. A second signal is generated upon satisfaction of a second condition, such as an open door at the passageway, which second signal indicates the likelihood of the subject passing through the passageway. A first display indicates if the first signal is present and a second signal if the second condition occurs.
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申请公布号 |
US5268670(A) |
申请公布日期 |
1993.12.07 |
申请号 |
US19910771618 |
申请日期 |
1991.10.04 |
申请人 |
SENIOR TECHNOLOGIES, INC. |
发明人 |
BRASCH, JOHN J.;CROSS, ALAN W. |
分类号 |
G07C9/00;G08B13/08;(IPC1-7):G08B13/00 |
主分类号 |
G07C9/00 |
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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