Reference : Three years experiment with the same tin oxide sensor arrays for the identification of m...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/2268/23845
Three years experiment with the same tin oxide sensor arrays for the identification of malodorous sources in the environment
English
Romain, Anne-Claude mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement > > >]
Nicolas, Jacques mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement >]
Andre, Philippe mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement > > >]
2002
Sensors and actuators. B, Chemical
Elsevier Science
84
271-277
Yes (verified by ORBi)
International
0925-4005
Lausanne
Switzerland
[en] sensor array ; drift ; field monitoring
[en] The paper discusses the ability of recognition models to classify malodours in the environment 3 years after their calibration, with the same sources releasing odours. Two methodologies applicable either in the lab or in the field are used. The effect of the long term drift of the sensors is highlighted on the results of principal component analysis (PCA) and of discriminant function analysis (DFA).
The paper examines also the applicability of some drift counteraction methods proposed in the literature. Handled with some care, a correction based on the drift direction in the principal components subspace should be applicable to the classification of real odorous sources in the field.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/23845

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