Sensing pad assembly employing variable coupler fiberoptic...

G - Physics – 01 – L

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G01L 1/24 (2006.01) A61B 5/024 (2006.01) A61B 5/0285 (2006.01) G01D 5/353 (2006.01) G02B 6/26 (2006.01) A61B 7/04 (2006.01)

Patent

CA 2341450

A sensing pad assembly for monitoring acoustic activity or motion of an object supported on the pad utilizes an improved fiberoptic sensor as a pressure transducing element to convert pressure fluctuations due to the acoustic activity or motion to an output that changes in accordance with the pressure fluctuations. The sensor (20) has an improved design that permits deflection of the coupler fusion region (32) without accompanying tension. In a preferred embodiment, the coupler fusion region (32) is arranged substantially in a U- shape so that the fiberoptic leads (34, 36) of the sensor may be located adjacent to each other at one side of the sensor.

L'invention concerne un ensemble plaquette de détection destiné à surveiller l'activité acoustique ou le mouvement d'un objet disposé sur ladite plaquette. Cet ensemble plaquette de détection fait intervenir un capteur à fibres optiques amélioré comme élément de transduction de pression afin de convertir les fluctuations de pression en un signal de sortie qui se modifie en fonction des fluctuations de pression. Grâce à la conception améliorée du capteur, la zone de fusion du coupleur peut être infléchie sans être mise sous tension. Dans un mode de réalisation préféré, la zone de fusion du coupleur est arrangée sensiblement en forme de U, de sorte que les fils à fibres optiques du capteur soient adjacents les uns par rapport aux autres, sur un côté du capteur.

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