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Apparatus and method for monitoring remote security zones

  • US 4,524,354 A
  • Filed: 05/10/1982
  • Issued: 06/18/1985
  • Est. Priority Date: 05/10/1982
  • Status: Expired due to Term
First Claim
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1. A security system for a plurality of remote security zones spaced from a central control location comprising:

  • a central control unit adapted to be placed at said central control location; and

    actuatable sensor adapted to be placed at each of said zones, respectively; and

    means coupling the central control unit with the sensors when the sensors are at respective zones, each zone having an identifying number, said central control unit including a central processor, a display, a first switch for actuating the display under the control of the central processor to cause the identifying numbers of the zones to be sequentially displayed on the display, a second switch for actuating the display under the control of said central processor to cause the status of a zone to be displayed on the display when the identifying number of the zone is displayed on the display, the status of each zone being changeable as a function of the actuation and deactuation of the respective sensor, whereby the status of a zone can change from a first status condition to a second status condition when the respective sensor is actuated, said second switch being actuatable under the control of the central processor to return the status of a zone displayed on said display to the first status condition when the status of the zone is in the second status condition when the sensor is deactuated after being actuated, said central processor being operable to display a symbol on the display representing an active actuation condition of a sensor when the sensor remains actuated after being actuated, the actuation of the second switch being operable to cause the central processor to display a third status condition of a zone before the status of the zone is returned to the first status condition if the sensor at the zone remains actuated after being actuated.

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