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    • 61. 发明授权
    • Detector supervision apparatus and method
    • 检测仪监控装置及方法
    • US5440293A
    • 1995-08-08
    • US891286
    • 1992-05-29
    • Lee D. Tice
    • Lee D. Tice
    • G08B29/04G08B13/14
    • G08B29/04
    • A detector supervision system usable with detectors or sensors formed with a removable head and a surface mountable base includes an energy storage device which is carried on each base. The energy storage device is either a capacitor or an inductor, and is coupled to one or more of the terminals of the base. A conducting spring member is also carried on the base, attached to one of the terminals. The spring member is in a first position when the head is attached to the base. The spring member moves to the second position in response to the head being removed from the base. Detection circuitry can detect the presence of one or more energy storage devices which are switched into communication lines between detector bases in response to one or more of the heads being removed. The detection circuitry can signal a central control panel that one or more of the heads has been removed from a respective base.
    • 可用于具有可移除头部和表面可安装基座的检测器或传感器的检测器监控系统包括承载在每个基座上的能量存储装置。 能量存储装置是电容器或电感器,并且耦合到基座的一个或多个端子。 导电弹簧构件也承载在基座上,附接到一个端子。 当头部附接到基座时,弹簧构件处于第一位置。 弹簧构件响应于头部从基座移除而移动到第二位置。 检测电路可以检测一个或多个能量存储装置的存在,这些能量存储装置响应于被去除的一个或多个磁头而被切换到检测器基座之间的通信线路。 检测电路可以向中央控制面板发信号通知一个或多个头部已经从相应的基座移除。