Pool alarm system including motion detectors and a drain blockag

Details Pool alarm system including motion detectors and a drain blockag Pool alarm system including motion detectors and a drain blockag

1999-09-01

2000-12-05

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

340573, 3405731, 3405734, 340531, 340522, G08B 2300

Patent

active

061573043

ABSTRACT:
A pool alarm system including a programmable control circuit, a control keypad, a number of planar focused infrared motion detectors, a key alarm system activation switch, an audible alarm output system, a drain blockage sensor, and a pool pump motor control relay. The drain blockage sensor is installed in place of the existing drain cover and includes a perforated dome shaped cover member slidably mounted to a compression detector including a spring biased plunger slidably mounted within a plunger cylinder. The spring biased plunger has a permanent magnet secured to a plunger bottom surface thereof. The plunger cylinder has a magnetically actuated reed switch in electrical connection with a drain stoppage input of the programmable control circuit and positioned on a bottom cylinder surface thereof. Each of the number of planar focused infrared motion detectors has an infrared sensing area having a planar bottom to allow for sensing motion at or a near a pool water surface.

REFERENCES:
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patent: 5115222 (1992-05-01), Peralta et al.
patent: 5369623 (1994-11-01), Zerangue
patent: 5486814 (1996-01-01), Quinones
patent: 5548275 (1996-08-01), Shambayati et al.
patent: 5619187 (1997-04-01), Serfontein
patent: 5631630 (1997-05-01), McSweeney
patent: 5638048 (1997-06-01), Curry
patent: 5730861 (1998-03-01), Sterghos et al.
patent: 5828304 (1998-10-01), Mowday

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