Safety alert and locating system

Details Safety alert and locating system Safety alert and locating system

H - Electricity

04

B

349/31

H04B 1/59 (2006.01) G01S 15/74 (2006.01)

Patent

CA 1293320

SAFETY ALERT AND LOCATING SYSTEM ABSTRACT OF THE DISCLOSURE A system for monitoring the safety and location of individuals includes a portable transceiver worn by each individual and a base control unit for sending interrogation signals to the individual units. The interrogation signals are transmitted through both air and water, and the indiviudal units transmit a response through the medium through which the interrogation signal was received. The base unit measures both the elapsed time from transmission to reception and the incoming phase angles of the response signal, and converts these measurements to indications of distance and angle between the base unit and the individual transceivers.

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