专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0834166B1 INTRUSION SENSING SYSTEMS 失效
标题翻译：入侵检测系统
公开(公告)号：EP0834166B1
公开(公告)日：2002-02-27
申请号：EP96920965.9
申请日：1996-06-24
申请人： Dando, David, John
发明人： Dando, David, John
IPC分类号： G08B13/24
CPC分类号： G08B13/2491
摘要： Vertical surface protection in a security installation is achieved by detecting disturbances in a microwave beam sent from a transmitter (30) to a receiver (31). The transmitter and receiver have associated beam aerials of extended horizontal aperture of not less than 0.50 metres (20 inches) to mitigate the effects of surface reflection from metal scaffold, plastic sheeting or netting, wooden boarding and brick or stone facing. The aerials are preferably slotted waveguide arrays and the advantages of using circular polarization are shown. Circularly-polarized slotted waveguide arrays are disclosed having a centre feed to minimize frequency dependent beam-spreading. The sensor may be used with an intruder detector (64) (to protect buildings in scafford) utilising triple technology exterior detection incorporating: microwave Doppler shift; at least one and preferably two passive infra-red devices linked together through timers and lens with horizontal curtains pattern; and anti-sabotage reflected active infra-red. The system can combine the aforementioned technologies into a new device and in this format mounted on scaffold overcomes the individual limitations of each of the prior art technologies when use in unison in an external scaffold environment.

2. 发明公开

EP0834166A1 INTRUSION SENSING SYSTEMS 失效
标题翻译：入侵检测系统
公开(公告)号：EP0834166A1
公开(公告)日：1998-04-08
申请号：EP96920965.0
申请日：1996-06-24
申请人： Dando, David, John
发明人： Dando, David, John
IPC分类号： G08B13
CPC分类号： G08B13/2491
摘要： Vertical surface protection in a security installation is achieved by detecting disturbances in a microwave beam sent from a transmitter (30) to a receiver (31). The transmitter and receiver have associated beam aerials of extended horizontal aperture of not less than 0.50 metres (20 inches) to mitigate the effects of surface reflection from metal scaffold, plastic sheeting or netting, wooden boarding and brick or stone facing. The aerials are preferably slotted waveguide arrays and the advantages of using circular polarization are shown. Circularly-polarized slotted waveguide arrays are disclosed having a centre feed to minimize frequency dependent beam-spreading. The sensor may be used with an intruder detector (64) (to protect buildings in scafford) utilising triple technology exterior detection incorporating: microwave Doppler shift; at least one and preferably two passive infra-red devices linked together through timers and lens with horizontal curtains pattern; and anti-sabotage reflected active infra-red. The system can combine the aforementioned technologies into a new device and in this format mounted on scaffold overcomes the individual limitations of each of the prior art technologies when use in unison in an external scaffold environment.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式