Enviaments recents

  • Battery aging impedance spectroscopy and incremental capacity analysis 

    Ovejas Benedicto, Victòria Júlia; Cuadras Tomàs, Àngel (ZAHNER-elektrik GmbH & Co. KG, 2017)
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    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)
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    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 ...
  • A novel algorithm for fast BCG cycle extraction in ambulatory scenarios 

    Gomez 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; Gomez Clapers, Joan; Hernández Urrea, Marc; Pallàs Areny, Ramon (2016)
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    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 ...
  • Direct pulse transit time measurement from an electronic weighing scale 

    Gomez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon (2016)
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    Accés restringit per política de l'editorial
    A novel method to measure Pulse Transit Time (PTT) from the force sensors of a modified electronic weighing scale is presented. The method relies on the relation between PTT and the interval between I and J waves of the ...
  • Enabling atrial fibrillation detection using a weight scale 

    Ayers, Brian; Beshaw, Connor; Serrano Finetti, Roberto Ernesto; Casas Piedrafita, Óscar; Pallàs Areny, Ramon; Couderc, Jean-Philippe (2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Atrial fibrillation (AF) is a cardiac arrhythmia characterized by a highly irregular heart rate. It is the most prevalent arrhythmia in the general population in the United States and most developed countries, and ...
  • Online cellphone battery entropy measurement for SoH estimation 

    Cuadras Tomàs, Àngel; Meinert, Florian; Büschel, Paul; Kanoun, Olfa (2016)
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    Accés restringit per política de l'editorial
    The widespread use of batteries requires knowledge of their state of health (SoH). In this paper we present a method to use entropy evolution as an aging indicator for batteries. Voltage, current and temperature are ...
  • Can Tusell, una casa adaptada para personas con diferentes discapacidades en terrassa 

    Bestraten Castells, Sandra Cinta; Hormias Laperal, Emilio; Guasch Murillo, Daniel; Àlvarez Suau, Maria Hortènsia; Casas Piedrafita, Óscar (2014)
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  • Interfaz gestual para el acceso a plataformas digitales y control de plataformas para el ocio 

    Hornero Ocaña, Gemma; Quílez Figuerola, Marcos; Casas Piedrafita, Óscar (2015)
    Comunicació de congrés
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    La tetraplejia y la paraplejia son discapacidades que resultan de las lesiones en la médula espinal y trastornos neuromusculares tales como la parálisis cerebral. Los pacientes que las padecen presentan diferentes niveles ...
  • Effects of stray capacitance to ground in bipolar water impedance measurements based on capacitive electrodes 

    Pallàs Areny, Ramon; Aliau Bonet, Carles (2015)
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    Liquid impedance measurements based on capacitive (or contactless) electrodes Overcome electrode polarization problems but are affected by stray capacitance from the material being measured to ground, the same as measurements ...
  • Charge-transfer-based signal interface for differential capacitive sensors 

    Gaitán Pitre, Jorge Elicer; Pallàs Areny, Ramon (2015)
    Comunicació de congrés
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    We propose a circuit to directly connect a differential capacitive sensor to a microcontroller unit (MCU), which is based on the charge-transfer method and does not need any calibration component. The performance has been ...
  • Effects of interelectrode capacitance in water conductivity measurements with capacitive electrodes 

    Pallàs Areny, Ramon; Aliau Bonet, Carles (2015)
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