Physiological condition monitors utilizing very low...

A - Human Necessities – 61 – B

Patent

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Details

A61B 7/04 (2006.01) A61B 5/0205 (2006.01) A61B 5/11 (2006.01) A61B 7/00 (2006.01) H04R 29/00 (2006.01)

Patent

CA 2403774

Physiological condition monitors (700) utilizing very low frequency acoustic signals and signal indicative of body orientation are disclosed. The physiological condition monitors (700) comprise a sensor (100) that is capable of detecting low frequency acoustic signals in the frequency range of one tenth Hertz to thirty Hz. The sensor (100) comprises a chamber (120) having portions that form a cavity (150) and a low frequency microphone (110) placed within the cavity (150). An alternate embodiment of the invention comprises a chamber (120) having portions that form a resonant cavity (440), a microphone (110) mounted in the resonant cavity (440), and a membrane (430) that covers the resonant cavity (440).

L'invention concerne des appareils de surveillance de condition physiologique (700) utilisant des signaux acoustiques à très basse fréquence et des signaux indiquant l'orientation du corps. Ces appareils de surveillance de condition physiologique (700) sont munis d'un capteur (100) capable de détecter des signaux acoustiques à basse fréquence compris dans la gamme de fréquences allant d'un dixième de Hertz à 30 Hz. Ce capteur (100) comporte une chambre (120) présentant des parties qui forment une cavité (150) et un microphone basse fréquence (110) placé à l'intérieur de cette cavité (150). Dans une variante, une chambre (120) présente des parties formant une cavité résonnante (440), un microphone (110) monté dans cette cavité résonnante (440) et une membrane (430) recouvrant cette cavité résonnante (440).

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