发明名称 |
Personnel security system |
摘要 |
A security sensing system monitors the passage of persons through a door or like opening. A transmitter module having means for transmitting an omnidirectional signal is installed on persons to be monitored and a sensing module for installing adjacent to a door opening to be monitored. The sensing module operates an alarm, but only when the door is opened by a person equipped with a trigger module on his person.
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申请公布号 |
US4682155(A) |
申请公布日期 |
1987.07.21 |
申请号 |
US19860818260 |
申请日期 |
1986.01.13 |
申请人 |
CENTRAL SECURITY MFG. CORP. |
发明人 |
SHIRLEY, JOHN R. |
分类号 |
G07C9/00;(IPC1-7):G08B13/08;G08B13/18 |
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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