Guard system.
    1.
    发明公开
    Guard system. 失效
    Schutzsystem。

    公开(公告)号:EP0206664A2

    公开(公告)日:1986-12-30

    申请号:EP86304518

    申请日:1986-06-12

    发明人: HUGHES JOHN PETER

    IPC分类号: G08B13/183

    CPC分类号: G08B13/183

    摘要: Guard system for protecting some space against undetected intrusion uses a plurality of wave beam paths (from transmitter T1 -Tn to receivers R1 -Rn) selectively energised in cycles (multiplexer Tx-Mx) so that each beam (transmitters T1 -Tn) is energised for part only of each cycle. Pressure or absence of beam energy indicative of intrusion is monitored (receivers R1 -Rn and multiplexer Rx-Mx). Signal level discrimination (46) of received signals operates both logic circuitry (flipflop 55) to give effectively continuous output (56, 58) except for beam interruption (52) even through a quiescent state of each cycle, and fault indication logic circuitry (100 via 70, 72) that is shown duplicated.

    摘要翻译: 用于保护一些空间不被检测到的入侵的保护系统使用以周期(多路复用器Tx-Mx)选择性激励的多个波束路径(从发射机T1-Tn到接收机R1-Rn),使得每个波束(发射机T1-Tn)被激励 仅作为每个周期的一部分。 监视指示入侵的波束能量的压力或不存在(接收机R1-Rn和多路复用器Rx-Mx)。 接收信号的信号电平鉴别(46)操作逻辑电路(触发器55),即使通过每个周期的静止状态,也可以有效地连续输出(56,58),除了光束中断(52),故障指示逻辑电路(100 通过70,72),其被示出重复。

    Guard system
    2.
    发明公开
    Guard system 失效
    护卫系统

    公开(公告)号:EP0206664A3

    公开(公告)日:1989-03-01

    申请号:EP86304518.3

    申请日:1986-06-12

    IPC分类号: G08B13/18

    CPC分类号: G08B13/183

    摘要: Guard system for protecting some space against undetected intrusion uses a plurality of wave beam paths (from transmitter T1-Tn to receivers R1-Rn) selectively energised in cycles (multiplexer Tx-Mx) so that each beam (transmitters T1-Tn) is energised for part only of each cycle. Pressure or absence of beam energy indicative of intrusion is monitored (receivers R1-Rn and multiplexer Rx-Mx). Signal level discrimination (46) of received signals operates both logic circuitry (flipflop 55) to give effectively continuous output (56, 58) except for beam interruption (52) even through a quiescent state of each cycle, and fault indication logic circuitry (100 via 70, 72) that is shown duplicated.

    摘要翻译: 用于保护一些空间不被检测到的入侵的保护系统使用以周期(多路复用器Tx-Mx)选择性激励的多个波束路径(从发射机T1-Tn到接收机R1-Rn),使得每个波束(发射机T1-Tn)被激励 仅作为每个周期的一部分。 监视指示入侵的波束能量的压力或不存在(接收机R1-Rn和多路复用器Rx-Mx)。 接收信号的信号电平鉴别(46)操作逻辑电路(触发器55),即使通过每个周期的静止状态,也可以有效地连续输出(56,58),除了光束中断(52),故障指示逻辑电路(100 通过70,72),其被示出重复。