Method of gas mixtures discrimination based on sensor array, temporal response and data driven approach

Gas Sensor Array with Broad Applicability

“…The feature space was considered best for solving a particular quantitative problem of gas assessment if the projection of feature set into corresponding quantitative variable resulted in a concentration estimation error, which was lower than the threshold of several percent. In our research a number of gas mixtures were considered to investigate the assessment problems Szczurek et al, 2011). The results show that many best feature spaces are available for each of them.…”

“…In our work the idea of solving each gas assessment task is to use the feature space(s) where the associated pattern recognition problem is solved best (Szczurek et al, 2011). For realisation of this approach it is good to propose a way for defining many significantly different feature spaces.…”

“…It is indicated that the contribution of this factor for pattern recognition is variable upon varied conditions of sensor array operation and the resulting sensor states (Maciejewska et al, 2009;Szczurek et al , 2011. The steady state, which is commonly favoured in commercial devices based on a sensor array is shown to provide equally or less valuable feature spaces, as compared to other sensor states.…”

“…These are: DFA for classification tasks and multiple liner regressions (MLR) for quantitative problems. They performed very well as feature space assessment methods in the framework of wrapper approach Szczurek et al, 2011). The exhaustive search of 15 dimensional feature spaces is relatively fast and it allows for arriving at solutions in an acceptable time.…”

Sample handling for electronic nose technology: State of the art and future trends

“…This opens the way for the direct optimization of the procedure of response space parameterization and finding the best time interval for the formation of CI with maximum information content. Correct application of the kinetic discrimination effect makes it possible to essentially increase the efficiency of cross-selective sensor arrays for gas analysis [25,40,[127][128][129][130][131].…”