Accession Number : ADD013024

Title :   Zoned Intrusion Display with Series-Connected Sensors.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Roth,Albert

Report Date : 11 Jun 1985

Pagination or Media Count : 10

Abstract : A visual display system detects and continuously displays the location of a brench in a protected building or secure area. Each of a plurality of exclusive OR gates is connected to a separate reed-type sensor switch. Each exclusive OR gate output is connected to a flip-flop network, each of which in turn is connected to a light emitting diode. Activation of a sensor switch results in lighting only of the light emitting diode associated with the area breached. A mechanism is also provided for preventing the generation of fase alarms by transients or inadvertent momentary opening of any of the sensor switches. (Patent).

Descriptors :   *PATENTS, *INTRUSION, *SECURITY, *DETECTORS, *LIGHT EMITTING DIODES, *DISPLAY SYSTEMS, ACTIVATION, FLIP FLOP CIRCUITS, NETWORKS, SWITCHES, FALSE ALARMS, TRANSIENTS, GATES(CIRCUITS), OUTPUT, VISUAL AIDS

Subject Categories : Test Facilities, Equipment and Methods
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE