Estimation of the parameters of SAW sensor's frequency shift: Application to odour recognition and concentration evaluation

Olivier Hotel (1) , Jean-Philippe Poli (1) , Christine Mer-Calfati (2) , Emmanuel Scorsone (2) , Samuel Saada (2)

1 LI3A (CEA, LIST) - Intelligence Artificielle et Apprentissage Automatique (CEA, LIST)
2 LCD (CEA, LIST) - Laboratoire Capteurs Diamant (CEA, LIST)

In this paper, an approach to determine the time constants and the amplitudes of the mass loading effect and of the viscoelastic contribution of SAW sensor's frequency shift is proposed. This approach consists in optimizing a function of these parameters which is independent of the concentration profile. Then, we show that these values are suitable features for chemical compounds identification and concentration evaluation.

Mots clés: Mass loading effects; Frequency shift; Concentration profiles; Chemical compounds; Frequency estimation; concentration evaluation; odour recognition; Surface acoustic waves; Chemical sensors; Sensor arrays; Gas detectors; detector; sensor; SAW sensors; Electronic nose; SAW sensor frequency shift; time constant determination; viscoelasticity; time measurement; Sensor systems; frequency measurement; chemical variables measurement; parameter estimation; viscoelastic contribution; chemical compound identification; mass loading effect; instrumentation; diamond

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Chimie analytique

Olivier Hotel, Jean-Philippe Poli, Christine Mer-Calfati, Emmanuel Scorsone, Samuel Saada. Estimation of the parameters of SAW sensor's frequency shift: Application to odour recognition and concentration evaluation. ISOEN 2017 - ISOCS/IEEE International Symposium on Olfaction and Electronic Nose, May 2017, Montréal, Canada. pp.7968913, ⟨10.1109/ISOEN.2017.7968913⟩. ⟨cea-01809223⟩