Communications: electrical – Continuously variable indicating – With meter reading
Patent
1982-05-10
1985-06-18
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
340502, 340525, 3408251, H04Q 900, G08B 2900
Patent
active
045243549
ABSTRACT:
Apparatus and a method for detecting the actuation of any of a plurality of security sensors at respective zones remotely spaced from a central control location and for displaying information representing the operating status of a zone whose sensor has been actuated. The apparatus comprises a control unit having a central processor and an input coupled to a transponder bus to which a plurality of remote transponders are connected, each transponder having a number of security sensors associated therewith. The control unit further includes a visual display having a first portion for displaying sequentially the identifying numbers assigned to the remote zones and a second portion for displaying the operating status of a zone whose identifying number is shown on the first portion of visual display. When a sensor is actuated at one of the zones, the central processor of the control unit causes the identifying number of the zone and the status of the zone to be displayed simultaneously. The control unit also displays information as to whether the sensor actuation at the zone is continuous or of short duration. By actuation of a status switch on the control unit, an operator can acknowledge a change in the status of the zone and return the display to its initial status condition before or after taking steps to correct any action which caused the status change at the zone. The control unit can also display information which indicates a power failure, a line problem, or a tampering of the equipment.
REFERENCES:
patent: 3958240 (1976-05-01), Richardson, III
patent: 4023139 (1977-05-01), Samburg
patent: 4067008 (1978-01-01), Sprowls, III
patent: 4117479 (1979-09-01), Galvin et al.
patent: 4339746 (1982-07-01), Ulicki et al.
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