New Transient Feature for Metal Oxide Gas Sensor Response Processing

This paper presents the performance of metal oxide gas sensor response processing for the concentration detection of an analyte diluted in a neutral atmosphere. In the field of electronic nose, two applications are generally studied: identification of a gaseous atmosphere from other atmospheres, or the determination of the concentration of one gaseous atmosphere. This second application needs more accuracy either in the measurement set-up or in the response analysis. We propose in this study the performance comparison between two traditional features extracted from the sensor response and a new feature corresponding to the maximum (Peak) of the derivative curve of the time sensor response. The performance of this feature to obtain fast odor concentration identifications is discussed and compared to other traditional features.