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