Detection and alarm system
    2.
    发明公开
    Detection and alarm system 失效
    Detektor-和Alarmanlage。

    公开(公告)号:EP0218765A1

    公开(公告)日:1987-04-22

    申请号:EP85307367.4

    申请日:1985-10-14

    IPC分类号: G08B13/16 G08B13/20

    CPC分类号: G08B13/1681 G08B13/20

    摘要: An intruder alarm system in which intrusion into an enclosed space is detected as a change in the air pressure in the enclosed space uses a microcomputer to monitor the enclosed space by way of a sensor such that changes in air pressure are compared with a reference set at spaced intervals in dependence upon the ambient air pressure, whereby false alarms caused by changes in the weather are avoided.

    摘要翻译: 一个入侵者报警系统,其中检测到封闭空间中的空气压力的变化,使用微型计算机通过传感器来监测封闭空间,使得空气压力的变化与参考组 间隔的间隔依赖于环境空气压力,从而避免了天气变化引起的假警报。