Method and apparatus for detection of warning system breach
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United States of America Patent
Stats
-
Jan 18, 2005
Grant Date -
Oct 28, 2004
app pub date -
Apr 22, 2003
filing date -
Apr 22, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Base stations in an outdoor warning siren system monitor the system communication radio frequency to detect the command signals used to activate remotely located warning units. A valid command signal includes a portion identifying the base station generating the signal. When a base station detects a signal bearing its identification, the base station compares the detected signal to its own station ID. If the detected signal matches the detecting station's ID then a system breach is declared. The outdoor warning siren system may respond to a breach by automatically de-activating any alarms activated by the unauthorized signal and/or producing a breach indication to emergency personnel who may respond according to the situation.
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Cited Art Landscape
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