GRUP ISI - Grup d'Instrumentació, sensors i interfícies

 

Recerca de nous sensors i de mètodes de mesura basats en variacions d'impedància elèctrica i de les interfícies electròniques per al condicionament i el processament dels senyals, amb èmfasi en macrosensors basats en tecnologies de baix cost, sensors autònoms i intel·ligents, xarxes de sensors, processament analògic dels senyals, sistemes d'adquisició de dades, espectroscòpia i tomografia d'impedància elèctrica,reducció d'interferències i soroll a la instrumentació, mesura de paràmetres fisiològics amb mètodes no invasors i biotelemetria. Transferència de tecnologia en sensors i sistemes de mesura per a enginyeria.

Enviaments recents

  • Solar energy radiation measurement with a low–power solar energy harvester 

    López Lapeña, Oscar; Pallàs Areny, Ramon (2018-08-01)
    Article
    Accés obert
    Solar energy radiation measurements are essential in precision agriculture and forest monitoring and can be readily performed by attaching commercial pyranometers to autonomous sensor nodes. However this solution significantly ...

  • Time-Division Multiplexing Control of Multi-Input Converters for Low-Power Solar Energy Harvesters 

    López Lapeña, Oscar (Institute of Electrical and Electronics Engineers (IEEE), 2018-03-29)
    Article
    Accés obert
    Many autonomous sensor nodes use small photovoltaic (PV) panels oriented towards the direction that provides the highest energy yield in the worst-case scenario. Since all those panels operate at similar irradiance and ...

  • Accelerating K-mer Frequency Counting with GPU and Non-Volatile Memory 

    Cadenelli, Nicola; Polo Cantero, José; Carrera Pérez, David (2018)
    Text en actes de congrés
    Accés obert
    The emergence of Next Generation Sequencing (NGS) platforms has increased the throughput of genomic sequencing and in turn the amount of data that needs to be processed, requiring highly efficient computation for its ...

  • Journal of Electrical Bioimpedance 

    Pallàs Areny, Ramon (University of Oslo, 2018-07-30)
    Article
    Accés obert

  • Method and apparatus for obtaining cardiovascular information by measuring between two extremities 

    Pallàs Areny, Ramon; Casanella Alonso, Ramón; Gómez Clapers, Joan (2014-06-04)
    Report de recerca
    Accés obert
    In this patent of invention there are described a method and an apparatus for obtaining information on the cardiovascular system beat by beat and continuously which are based exclusively on measurements between two limbs ...

  • Performance characterization of spark workloads on shared NUMA Systems 

    Baig, Shuja Ur Rehman; Amaral, Marcelo; Polo Cantero, José; Carrera Pérez, David (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    As the adoption of Big Data technologies becomes the norm in an increasing number of scenarios, there is also a growing need to optimize them for modern processors. Spark has gained momentum over the last few years among ...

  • Battery aging impedance spectroscopy and incremental capacity analysis 

    Ovejas Benedicto, Victòria Júlia; Cuadras Tomàs, Àngel (ZAHNER-elektrik GmbH & Co. KG, 2017)
    Text en actes de congrés
    Accés obert
    We analize electrochemical LiFePO4 cells with impedance spectroscopy and incremental capacity analysis in order to establish a correlation with capacity fade. We found that polarization and diffusion impeances increased ...

  • Battery Impedance Spectroscopy obtained from Electrochemical Model 

    Miró Jané, Pol; Cuadras Tomàs, Àngel (2017)
    Text en actes de congrés
    Accés obert
    We investigate impedance spectra obtained from an electrochemical model using pulsed signals. We characterize the dependence of NiMH battery parameters such as electrodes porosity and conductivity on impedance. We are able ...

  • Biosensors for m-health 

    Pallàs Areny, Ramon (2017-06-14)
    Presentació
    Accés obert

  • Multisensor system for analyzing the thigh movement during walking 

    Borghetti, Michela; Serpelloni, Mauro; Sardini, Emilio; Casas Piedrafita, Óscar (2017-08-01)
    Article
    Accés obert
    Body movements monitoring may allow preventing, diagnosing, and recovering several wrong attitudes that could lead to possible future diseases. A multisensor system was developed to measure thigh movements in free-living ...

  • A novel algorithm for fast BCG cycle extraction in ambulatory scenarios 

    Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon (2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    A novel algorithm JDet for ballistocardiogram (BCG) cycle extraction is presented that is intended for the fast generation of ensemble averages in ambulatory scenarios where the ECG signal is not available. First, the ...

  • Impact of the mechanical interface on BCG signals obtained from electronic weighing scales 

    Casanella Alonso, Ramón; Gómez Clapers, Joan; Hernández Urrea, Marc; Pallàs Areny, Ramon (2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work analyzes the reproducibility of the BCG obtained from different weighing scales. First, the natural frequency of three commercial bathroom scales has been characterized by an impulse excitation test. Second, the ...

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