Importance

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Abstract

An emergency transmitter system is disclosed for enhancing the personal security of individuals within a predetermined geographic area such as a campus, shopping mall or stadium. A plurality of fixed transceivers are located at selected locations within the predetermined geographic area, preferably in a substantially equidistant pattern throughout the area. In a preferred embodiment of the present invention, each fixed transceiver is preferably located in conjunction with a street light in an elevated location. A battery powered low power portable transmitter is then issued to selected individuals, each transmitter including circuitry for transmitting a coded signal associated with a particular individual. In the event of an emergency situation, the portable transmitter is activated, utilizing an irrevocable manual activation switch, and the coded signal is transmitted utilizing the low power radio frequency signal. Reception of the coded signal at one or more fixed transceivers will cause those transceivers to retransmit that coded signal along with a second coded signal indicative of the locations of the fixed transceivers. Reception of this signal at a central receiver will result in a display indicating the particular individual and the geographic location as determined by the locations of the fixed transceivers, thus allowing security personnel to rapidly respond to an emergency situation while discouraging prank alarms.

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First Claim