G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 22/04 (2006.01)
Patent
CA 2448904
There is disclosed a method of estimating moisture content in a material involving directing a first frequency (f1) signal and a second frequency (f2) signal through a material, determining a first absolute phase shift (.PHI.1) of said first frequency signal and a second absolute phase shift (.PHI.2) of said second frequency signal, transforming .PHI.1 to a first corrected absolute phase shift (.PHI.1c) and .PHI.2 to a second corrected absolute phase shift (.PHI.2c) in accordance with an expected relationship between .PHI.1 and .PHI.2, and estimating moisture content from .PHI.1c and .PHI.2c.
L'invention concerne une méthode pour estimer la teneur en humidité d'un matériau, ladite méthode consistant à diriger un signal d'un première fréquence (f¿1?) et un signal d'une deuxième fréquence (f¿2?) à travers un matériau, à déterminer un premier déphasage absolu (.PHI.¿1?) dudit signal de première fréquence et un deuxième déphasage absolu (.PHI.¿2?) dudit signal de deuxième fréquence, à transformer .PHI.¿1? en un premier déphasage absolu corrigé (.PHI.¿1c?) et .PHI.¿2? en un deuxième déphasage absolu corrigé (.PHI.¿2c?) en fonction d'une relation escomptée entre .PHI.¿1? et .PHI.¿2?, et à estimer la teneur en humidité à partir de .PHI.¿1c? et .PHI.¿2c?.
Commonwealth Scientific And Industrial Research Organisation
Intalysis Pty Ltd
Kirby Eades Gale Baker
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