Liquid or gas sensor and method

G - Physics – 01 – N

Patent

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Details

G01N 21/17 (2006.01) A61B 5/08 (2006.01) G01N 21/01 (2006.01) G01N 21/03 (2006.01) G01N 21/35 (2006.01)

Patent

CA 2549568

Fluid sensor containing a fluid cell (1) to enclose a volume of fluid (7), i.e. a gas or liquid, that is to be analysed and a method for producing such a fluid sensor. The fluid sensor comprises an electromagnetic energy source (3) arranged to transmit electromagnetic waves (4) into the fluid cell (1) and at least one detector (5) to detect electromagnetic waves passing through the fluid cell (1) and at least one opening (2) for the inlet/outlet of a fluid that is to be analysed. The fluid sensor also comprises a circuit board (8, 10, 11, 12, 13, 14, 15, 16) to evaluate the intensity of electromagnetic waves reaching said at least one detector (5) and/or to provide the circuitry for the electromagnetic energy source (3). At least part of the fluid cell (1) is incorporated into the substrate of the circuit board (8, 10, 11, 12, 13, 14, 15, 16).

L'invention concerne un capteur de fluide contenant une cellule de fluide (1) renfermant un volume de fluide (7), c'est-à-dire un gaz ou un liquide, à analyser. L'invention concerne également un procédé de production d'un tel capteur. Le capteur de fluide comprend une source d'énergie électromagnétique (3) destinée à transmettre des ondes électromagnétiques (4) dans la cellule de fluide (1) et au moins un détecteur (5) qui détecte les ondes électromagnétiques traversant la cellule de fluide (1) et au moins une ouverture (2) pour l'admission/la sortie du fluide à analyser. Le capteur de fluide comporte en outre une carte de circuit imprimé (8, 10, 11, 12, 13, 14, 15, 16) pour évaluer l'intensité des ondes électromagnétiques atteignant lesdits détecteurs (5) et/ou pour fournir les circuits destinés à la source d'énergie électromagnétique (3). Au moins une partie de la cellule de fluide (1) est incorporée dans le substrat de la carte de circuit imprimé (8, 10, 11, 12, 13, 14, 15, 16).

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