• Acceleration and drift reduction of MOX gas sensors using active sigma-delta controls based on dielectric excitation 

      Solà Peñafiel, Nil; Manyosa i Vilardell, Xavier; Navarrete Gatell, Eric; Ramos Castro, Juan José; Jiménez Serres, Vicente; Bermejo Broto, Sandra; García, Isabel; Llobet Valero, Eduard; Domínguez Pumar, Manuel (2022-08-15)
      Article
      Accés restringit per política de l'editorial
      The objective of this paper is to apply a closed-loop control based on dielectric excitation to MOX gas sensors in order to improve their response time. The control implements a feedback loop in which temperature modulations ...
    • Analysis of the conductance transient in thick film tin oxide gas sensors 

      Vilanova, X; Llobet Valero, Eduard; Alcubilla González, Ramón; Sueiras, Jl; Correig, X (Elsevier, 1996-03)
      Article
      Accés restringit per política de l'editorial
      In this paper, we analyse the conductance transient of a Taguchi TGS-822 sensor under a step change in the vapour concentration. A diffusion-limited range in the conductance transient is observed. Adjustments between the ...
    • IoT gas sensors array for unobtrusive tracking of cooking activity 

      Haddi, Zouhair; Llano Viles, Joshua; Alfaras Espinàs, Miquel; Marín López, Daniel; Perera Lluna, Alexandre; Fernández García, Jose Alberto; Llauradó, Xavier; Avellana, Narcís; Fonollosa Magrinyà, Jordi; Llobet Valero, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      Recent research on remote tracking environments has strengthened smart home IoT ecosystems by the integration of multiple sensing tools that capture not only contextual data in a private setting, but also information about ...
    • Single-crystalline metal oxide, resistive gas sensors advances and perspectives 

      Llobet Valero, Eduard; Navarrete, eric; Annanouch, F.E.; Alvarado, M.; Gonzalez, E.; Ramirez, J.L.; Romero, A.; Vilanova, Xavier; Domínguez Pumar, Manuel; Vallejos, S.; Gracia, Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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      Here we review recent results on the synthesis of single-crystalline metal oxide nanomaterials and their integration in resistive gas sensing devices. Emphasis is put on the integration of such nanomaterials in a wide ...
    • Understanding noise-shaping in sigma-delta controls of surface potential for MOX gas sensors 

      Domínguez Pumar, Manuel; Kowalski, Lukasz; Monge Villora, Oscar; Olm Miras, Josep Maria; Navarrete Gatell, Eric; Llobet Valero, Eduard; Pons Nin, Joan (Institute of Electronics, Information and Communications Engineers (IEICE), 2018)
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      The objective of this paper is to explain how quantization noise-shaping can be achieved for the output bitstream of sigma-delta controls of surface potential (SP) in MOX gas sensors. These controllers use temperature ...
    • Using a Second Order Sigma-Delta Control to Improve the Performance of Metal-Oxide Gas Sensors 

      Kowalski, Lukasz; Pons Nin, Joan; Navarrete, Eric; Llobet Valero, Eduard; Domínguez Pumar, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2018-02-23)
      Article
      Accés obert
      Controls of surface potential have been proposed to accelerate the time response of MOX gas sensors. These controls use temperature modulations and a feedback loop based on first-order sigma-delta modulators to keep ...