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1. 发明授权

US06822566B2 Perimeter monitoring system 失效
标题翻译：周边监控系统
公开(公告)号：US06822566B2
公开(公告)日：2004-11-23
申请号：US09832694
申请日：2001-04-10
申请人： Lester R. Matthews , Thomas E. Berk , M. Shaun Farrier
发明人： Lester R. Matthews , Thomas E. Berk , M. Shaun Farrier
IPC分类号： G08B1318
CPC分类号： G08B13/18
摘要： A perimeter monitoring system is arranged to detect passage across a perimeter of an area. The system primarily includes an emitter, a retroreflector, a detector and an alarm. The emitter provides a modulated visible laser beam. The retroreflector is arranged to direct the beam along a segment of the perimeter and return the beam along the segment. The detector includes a device that blocks reception of light outside an angle of less than 5 degrees. One or more local or remote alarms are activated in response to the signal. For example, a remote alarm is located on the inside of a residence window where it is activated by another visible laser beam. Alignment of the peripheral monitoring system is less costly and false alarms are less likely than with known systems.
摘要翻译：周边监测系统被布置成检测通过一个区域周边的通道。该系统主要包括发射器，后向反射器，检测器和报警器。发射器提供调制的可见激光束。后向反射器布置成沿着周边的一段引导光束并且沿着光束返回光束。该检测器包括阻挡小于5度角的光的接收的装置。响应信号激活一个或多个本地或远程报警。例如，远程警报器位于居住窗口的内部，在其中由另一个可见激光束激活。外围监视系统的对准成本较低，并且虚假报警的可能性低于已知系统。

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