G - Physics
08
B
G08B 21/08 (2006.01)
Patent
CA 2526342
A drowning alarm and position marking system is described herein. The Aqua Alert is a system for detecting the drowning of an individual and subsequent generation of an alarm to alert a parent, lifeguard or by-standers. The system consists of two different units, a portable unit worn by the swimmer and a base station which is worn by a parent/supervisor or located on the beach, pool or boat. The buoyant portable unit transmits a signal which may be ultra-sonic, sub-sonic, audio or optic, but preferably radio frequency in nature. This signal is transmitted semi continuously until the portable unit is submerged in water in which case the signal is cut off from the base station due to the attenuating effects of being submerged in water. The base station will generate an alarm such as a siren or visual means or both if the signal from the portable unit is not received for a period of approximately 10 seconds, thus operating in a fail- safe condition. The portable unit has an on board means of sensing submersion in water and after being submerged for approximately 10 seconds will release a stored line which will allow the unit to remain attached to the drowning individual but float to the surface where both a highly reflective coating and a super high intensity LED will indicate the position of the drowning individual. Additionally, the base station shall incorporate a directional antenna and a related LED display to indicate the immediate direction of the floating portable unit. The transmitted signal from the portable unit may also be manually disabled by the swimmer resulting in the activation of the onboard marking system as well as the activation of the base station alarm. The system may also act as a proximity monitor as the base station will alarm if the swimmer's distance exceeds the transmitting range of the portable unit, which is approximately 200 feet.
Delorey Darren G.
Na
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