System for analyzing a fluctuating flow of a mixture of gases

A - Human Necessities – 61 – B

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A61B 5/083 (2006.01) A61B 5/097 (2006.01)

Patent

CA 2727566

The invention relates to a system (50) and method for analyzing a fluctuating flow of a mixture of gases having an optionally variable frequency. The system can be used to determine momentary presence and quantity of at least one selected gaseous component in the fluctuating flow. The system' uses at least one electronic sensor adapted to generate a measurement signal representative of at least one of the presence and quantity of the at least one gaseous component. The at least one electronic sensor (51) has a response rate slower than the frequency of the fluctuating flow and the measurement signal is subjected to a correction to construct a momentary corrected signal that equals, or at least closely resembles, at least one of the momentary presence and quantity of the at least one gaseous component. In particular the correction includes a compilation of inverse filtering and moving average filtering.

L'invention concerne un système et un procédé d'analyse d'un écoulement fluctuant d'un mélange de gaz présentant une fréquence éventuellement variable. Le système peut être utilisé pour déterminer la présence et la quantité instantanées d'au moins un composant gazeux donné dans l'écoulement fluctuant. Le système fait appel à au moins un capteur électronique prévu pour générer un signal de mesure représentatif de la présence et / ou de la quantité du ou des composants gazeux. Le ou les capteurs électroniques possèdent une vitesse de réponse plus lente que la fréquence de l'écoulement fluctuant et le signal de mesure est soumis à une correction pour construire un signal instantané corrigé égal, ou du moins ressemblant de près, à la présence et / ou la quantité instantanées du ou des composants gazeux. La correction comprend en particulier une compilation de filtrage inverse et de filtrage en moyenne glissante.

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