Application of multiplicative drift correction and component correction methods on simulated gas sensor array responses

Sensor response drift is one of the most challenging problems in gas-analyzing systems. Such systems, commonly called electronic noses, are expected to be reliable and reproducible in the long term. Due to the drift phenomena, electronic noses usability is limited to the relatively short period of time, and frequent recalibrations of the device are required. Since it is very hard to fabricate sensors without drift, this phenomenon has to be detected and can be compensated using signal processing methods in order to extend sensor array operation time. In this work, two approaches for drift compensation, namely the Multiplicative Drift Correction and Component Correction methods, are presented. An analysis of the simulated gas sensor array response is shown.