A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
A63B 29/02 (2006.01) A62B 99/00 (2009.01) G01S 1/04 (2006.01) G01S 3/04 (2006.01) G01S 3/30 (2006.01) H04B 1/38 (2006.01)
Patent
CA 2443751
An improved battery-powered device and system for avalanche transceiver rescue. The device comprises a transmitter, a receiver, microcontroller firmware system, graphic display, audio speaker and input switches residing in a single portable housing with a flip lid. When the Flip lid is closed, the system transmits a radio frequency signal at a predetermined interval. When the flip lid is opened, the system deactivates the transmitter and activates the receiver. The receiver comprises three mutually orthogonal tuned-coil antennas. The system digitally processes the received signal strength and polarity of the signal from one or more of the antennas to guide a user to a transmitting beacon. The antennas are spatially isolated permitting the use of higher-sensitivity antennas. The system digitally controls the sensitivity of each antenna enabling scans for signals based on a specified proximity range to the exclusion of other proximity ranges. The system also displays an indication when a degraded signal is received as a result of signal collision from multiple beacons.
Kashuba Douglas
Pachal Cynthia G.
Pachal Edward G.
Kashuba Douglas
Thompson Douglas B.
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