In situ optical surface temperature measuring techniques and...

G - Physics – 01 – K

Patent

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G01K 11/32 (2006.01)

Patent

CA 2565071

A temperature sensor that has a thermally conducting contact with a surface that emits electromagnetic radiation in proportion to the temperature of the contact is disclosed. The sensor has a resilient member attached to the contact and configured to extend the contact toward the object to be measured. A first light waveguide is attached to the contact and is configured to transmit the electromagnetic radiation from the contact. The sensor has a guide with a bore formed therein that the first waveguide is insertable into. When the contact is moved, the first waveguide moves within the bore. A second waveguide is attached to the guide such that a variable gap is formed between the ends of the first waveguide and the second waveguide. Electromagnetic energy from the first waveguide traverses the gap and can be transmitted by the second waveguide. The guide allows the first waveguide to move with the contact in order to ensure that the contact is fully engaged with the surface of the object.

L'invention concerne un capteur de température, qui est en contact par conduction thermique avec une surface qui émet un rayonnement électromagnétique proportionnel à la température de contact. Le capteur possède un organe souple, attaché au contact et configuré de manière à ce que le contact avance jusqu'à l'objet à mesurer. Un premier guide d'ondes lumineuses est attaché au contact et est configuré de manière à transmettre le rayonnement électromagnétique provenant du contact. Le capteur possède un guide comportant un alésage dans lequel est inséré le premier guide d'ondes lumineuses. Lorsque l'on déplace le contact, le premier guide d'ondes lumineuses se déplace à l'intérieur de l'alésage. Un deuxième guide d'ondes lumineuses est attaché au guide de manière à former un intervalle réglable entre les extrémités des premier et deuxième guides d'ondes. L'énergie électromagnétique provenant du premier guide d'ondes traverse l'intervalle et peut être transmise par le deuxième guide d'ondes. Le guide permet au premier guide d'ondes de se déplacer conjointement avec le contact, de manière à assurer que le contact mette complètement en prise la surface de l'objet.

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