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dc.contributorDomínguez Pumar, Manuel
dc.contributor.authorMonge Víllora, Oscar
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.descriptionSmart control of chemical MOX gas sensors
dc.description.abstractThe objective of this work is to present different control loops designed for improving the time response of metal-oxide gas sensors. This type of sensors generally present slow responses and in some cases, drift. Focusing on voltage actuation on the chemical layer, we discover an asymmetry of resistivity of the sensing layer as a function of the applied bias polarity. This phenomenon may be linked to sensor drift as well as to a built-in voltage in the layer. Different control loops have been designed to keep constant this asymmetric behaviour during the operation of the sensor. Experiments will be presented showing how the sensor operates under the proposed controls and how it responds to changes in the concentration of the gases to be measured.
dc.publisherUniversitat Politècnica de Catalunya
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica
dc.subject.lcshSensor networks
dc.subject.lcshMetal oxide semiconductors
dc.subject.otherMOX gas sensors
dc.subject.othersmart control
dc.subject.otherchemical layer
dc.subject.othersurface potential
dc.titleSmart control of chemical MOX gas sensors
dc.title.alternativeSmart control of chemical MOX gas sensors
dc.typeMaster thesis
dc.subject.lemacXarxes de sensors
dc.rights.accessRestricted access - author's decision
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona

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