Gas sensor assembly with catalytic element

Details Gas sensor assembly with catalytic element Gas sensor assembly with catalytic element

G - Physics

01

N

G01N 27/16 (2006.01)

Patent

CA 2604798

A gas sensor assembly comprising a gas-sensitive element, and a first pulse modulation circuit comprising a first switching device is disclosed. The gas- sensitive element and the first switching device are arranged in series with a power supply. The first pulse modulation circuit further comprises a first control module adapted to control the first switching device in accordance with a monitored parameter of the gas-sensitive element, the parameter varying with the temperature of the element, thereby controlling the power consumed from the power supply by the gas-sensitive element.

L'invention concerne un ensemble de capteur de gaz comprenant un élément sensible au gaz et un premier circuit de modulation d'impulsions comprenant un premier dispositif de commutation. L'élément sensible au gaz et le premier dispositif de commutation sont disposés en série avec une alimentation électrique. Le premier circuit de modulation d'impulsions comprend également un premier module de commande conçu pour commander le premier dispositif de commutation en fonction d'un paramètre surveillé de l'élément sensible au gaz, le paramètre variant avec la température de l'élément, commandant ainsi la consommation de l'alimentation électrique par l'élément sensible au gaz.

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