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dc.contributor.authorFonollosa Magrinyà, Jordi
dc.contributor.authorFernandez, Luis
dc.contributor.authorGutiérrez-Gálvez, Agustín
dc.contributor.authorHuerta, Ramon
dc.contributor.authorMarco, Santiago
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.identifier.citationFonollosa, J., Fernandez, L., Gutiérrez-Gálvez, A., Huerta, R., Marco, S. Calibration transfer and drift counteraction in chemical sensor arrays using direct standardization. "Sensors and actuators B. Chemical", 18 Maig 2016, vol. 236, p. 1044-1053.
dc.description.abstractInherent variability of chemical sensors makes it necessary to calibrate chemical detection systems individually. This shortcoming has traditionally limited usability of systems based on metal oxide gas sensor arrays and prevented mass-production for some applications. Here, aiming at exploring calibration transfer between chemical sensor arrays, we exposed five twin 8-sensor detection units to different concentration levels of ethanol, ethylene, carbon monoxide, or methane. First, we built calibration models using data acquired with a master unit. Second, to explore the transferability of the calibration models, we used Direct Standardization to map the signals of a slave unit to the space of the master unit in calibration. In particular, we evaluated the transferability of the calibration models to other detection units, and within the same unit measuring days apart. Our results show that signals acquired with one unit can be successfully mapped to the space of a reference unit. Hence, calibration models trained with a master unit can be extended to slave units using a reduced number of transfer samples, diminishing thereby calibration costs. Similarly, signals of a sensing unit can be transformed to match sensor behavior in the past to mitigate drift effects. Therefore, the proposed methodology can reduce calibration costs in mass-production and delay recalibrations due to sensor aging. Acquired dataset is made publicly available
dc.format.extent10 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors
dc.subject.lcshChemical detectors
dc.subject.otherChemical sensors
dc.subject.otherCalibration transfer
dc.subject.otherMOX sensors
dc.subject.otherElectronic nose
dc.subject.otherDirect Standardization
dc.subject.otherPublic dataset
dc.titleCalibration transfer and drift counteraction in chemical sensor arrays using direct standardization
dc.subject.lemacSensors químics
dc.contributor.groupUniversitat Politècnica de Catalunya. B2SLab - Bioinformatics and Biomedical Signals Laboratory
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorFonollosa, J.; Fernandez, L.; Gutiérrez-Gálvez, A.; Huerta, R.; Marco, S.
local.citation.publicationNameSensors and actuators B. Chemical

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