Detector for objects falling into water

Details Detector for objects falling into water Detector for objects falling into water

1998-01-09

1999-02-23

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340552, 340556, 340693, 367 93, G08B 2100

Patent

active

058748989

ABSTRACT:
Apparatus for detecting the fall of a person or object into a body of water comprises a series of interconnected modules mounted in a line contiguous to the body, and associated controls. The modules comprise alternately disposed radiation emitters and radiation sensors. The controls are associated with the sensors and adapted to detect perturbations from a steady state condition of the received radiation energy caused by reflections from the falling person or object.

REFERENCES:
patent: 4747085 (1988-05-01), Dunegan et al.
patent: 5023593 (1991-06-01), Brox
patent: 5541403 (1996-07-01), Heinonen et al.
patent: 5638048 (1997-06-01), Curry

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