Reference : Long Term Stability Of Metal Oxide-Based Gas Sensors For E-nose Environmental Applica...
Scientific congresses and symposiums : Paper published in a book
Life sciences : Environmental sciences & ecology
Long Term Stability Of Metal Oxide-Based Gas Sensors For E-nose Environmental Applications: an overview
Romain, Anne-Claude[Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement > > >]
Nicolas, Jacques[Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement >]
OLFACTION AND ELECTRONIC NOSE: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose
OLFACTION AND ELECTRONIC NOSE
15–17 April 2009
[en] gas sensors ; e-nose ; signal processing
[en] The e-nose technology has enormous potentialities for in site monitoring of malodors. However a number of limitations are associated with the properties of chemical sensors, the performances of the signal processing and the realistic operation conditions of environmental field. From the experience of the research group in the field, the metal oxide based gas sensors (Figaro type) are until now the best chemical sensors for long term application, more than one year of continuous working in the field. To be usable for malodors measurement in the field, the e-nose has to deal with the lack of long term stability of these sensors. The drift and the sensors replacement have to be considered. In order to appraise the time evolution of the sensors and the effect on the results of an electronic nose, experimentation has been performed during three years on two identical sensor arrays. The two arrays contain the same six Figaro sensors and are in the same sensor chamber of the e-nose system. Both arrays have worked continuously during three years without break.