Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/114928
Title: Calibration transfer in temperature modulated gas sensor arrays
Author: Fernández Romero, Luis
Güney, Selda
Gutiérrez Gálvez, Agustín
Marco Colás, Santiago
Keywords: Detectors de gasos
Temperatura
Calibratge
Gas detectors
Temperature
Calibration
Issue Date: 31-Aug-2016
Publisher: Elsevier B.V.
Abstract: Shifts in working temperature are an important issue that prevents the successful transfer of calibration models from one chemical instrument to another. This effect is of special relevance when working with gas sensor arrays modulated in temperature. In this paper, we study the use of multivariate techniques to transfer the calibration model from a temperature modulated gas sensor array to another when a global change of temperature occurs. To do so, we built 12 identical master sensor arrays composed of three different types of commercial Figaro sensors and acquired a dataset of sensor responses to three pure substances (ethanol, acetone and butanone) dosed at 7 concentrations. The master arrays are then shifted in temperature (from −50 to 50 °C, ΔT = 10 °C) and considered as slave arrays. Data correction is performed for an increasing number of transfer samples with 4 different calibration transfer techniques: Direct Standardization, Piece-wise Direct Standardization, Orthogonal Signal Correction and Generalized Least Squares Weighting. In order to evaluate the performance of the calibration transfer, we compare the Root Mean Square Error of Prediction (RMSEP) of master and slave arrays, for each instrument correction. Best results are obtained from Piece-wise Direct standardization, which exhibits the lower RMSEP values after correction for the smaller number of transfer samples.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.snb.2016.02.131
It is part of: Sensors and Actuators B-Chemical, 2016, vol. 231, p. 276-284
Related resource: https://doi.org/10.1016/j.snb.2016.02.131
URI: http://hdl.handle.net/2445/114928
ISSN: 0925-4005
Appears in Collections:Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))
Articles publicats en revistes (Electrònica)

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