Auto-correcting or self-calibrating dts temperature sensing...

Details Auto-correcting or self-calibrating dts temperature sensing... Auto-correcting or self-calibrating dts temperature sensing...

G - Physics

01

K

G01K 11/12 (2006.01) G01K 15/00 (2006.01) G01N 21/65 (2006.01)

Patent

CA 2738627

An automatic auto-cor-recting method is presented to improve the accuracy of fiber optic distributed temperature measurements derived from Raman back scatterings utilizing two light sources with different wavelengths, by appropriate choice of the wavelengths of the two sources, the use of single pulse modulating circuit for the two light sources, and use of one of the light sources as a primary measurement sys-tem and the second light source as an oc-casional correcting source.

L'invention concerne un procédé de correction automatique permettant d'améliorer la précision de mesures de température distribuées par fibre optique dérivées d'une rétrodiffusion Raman au moyen de deux sources de lumière de longueurs d'onde différentes, d'un choix approprié des longueurs d'onde des deux sources, et de l'utilisation de l'une des sources de lumière comme système de mesure primaire, la seconde source de lumière étant une source de correction occasionnelle.

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