Recent Submissions

  • Effects of stray capacitance to ground in three electrode monopolar needle bioimpedance measurements 

    Kalvøy, Håvard; Aliau Bonet, Carles; Pallàs Areny, Ramon; Martinsen, Ørjan G (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference lecture
    Open Access
    Positive phase angle is documented and analyzed in a three electrode monopolar needle measurement. Inductance equivalent behavior of the stray capacitance to ground is described as error source in a non-inductive sample ...
  • Low-cost method to estimate body capacitance to ground at mid frequencies 

    Aliau Bonet, Carles; Pallàs Areny, Ramon (2014)
    Conference report
    Restricted access - publisher's policy
    Impedance measurements that involve the human body are affected by the capacitance between the body and earth ground. This paper describes a low-cost method to estimate that capacitance that can be applied to impedance ...
  • Pyroelectric sensor for entropy measurements 

    Cuadras Tomàs, Àngel; Ovejas Benedicto, Victòria Júlia (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In this contribution we propose a system to measure entropy fluctuations in thermal systems. The system consist of a pyroelectric sensor and a temperature sensor. The pyroelectric convert thermal variations into electrical ...
  • SoH evaluation of LiFePO4 cells using impedance and thermal measurements 

    Ovejas Benedicto, Victòria Júlia; Cuadras Tomàs, Àngel; Morante, Joan Ramón (2014)
    Conference report
    Restricted access - publisher's policy
    LiFePO4 is a promising cathode material used in Li-ion batteries. It offers better cyclability and is safer in terms of thermal runaway than previous LiCoO2 or LiMnO2 cathodes. With new applications as electric vehicles ...
  • Interagames: Control accesible de videojuegos para Xbox 360, PS3, Wii y PC. 

    Hornero Ocaña, Gemma; Quílez Figuerola, Marcos; Casas Piedrafita, Óscar (2013)
    Conference report
    Open Access
    Este trabajo presenta una nueva plataforma de interacción de usuarios con discapacidad con los juegos de las principales videoconsolas comerciales. El sistema diseñado habilita el acceso a las diferentes plataformas ...
  • Transient Reduction in pulse-based impedance measurements, 

    Aliau Bonet, Carles; Pallàs Areny, Ramon (2013)
    Conference report
    Open Access
    Impedance measurements based on voltage pulse injection and current detection are faster and easier to implement than measurements based on sine waves, but transients produced in the current-to-voltage conversion may lead ...
  • Entropy as a wear out indicator: The resistor example 

    Cuadras Tomàs, Àngel; Ovejas Benedicto, Victòria Júlia; Quílez Figuerola, Marcos (2013)
    Conference report
    Restricted access - publisher's policy
    In this contribution we aim at proposing entropy measurements in resistive elements to characterize the induced damage due to current and Joule effect dissipation. 0.25 W off the shelf resistors are biased with constant ...
  • Uncertainty factors in time-interval measurements in ballistocardiography 

    Gómez Clapers, Joan; Serra Rocamora, Albert; Casanella Alonso, Ramón; Pallàs Areny, Ramon (2013)
    Conference report
    Restricted access - publisher's policy
    There is a growing interest on measuring time intervals between the J peak of the ballistocardiogram (BCG) and several features of other cardiovascular signals such as the ECG in order to obtain cardiovascular function ...
  • A fast method to estimate body capacitance to ground 

    Aliau Bonet, Carles; Pallàs Areny, Ramon (2012)
    Conference report
    Open Access
  • Interferencias capacitivas en circuitos de interfaz directa entre sensores capacitivos y microcontrolador 

    Gaitán Pitre, Jorge Elicer; Pallàs Areny, Ramon (2012)
    Conference report
    Restricted access - publisher's policy
    Se presenta un análisis experimental del efecto de las interferencias capacitivas en dos circuitos de interfaz directa entre sensores capacitivos y microcontrolador, uno basado en la transferencia de carga (CT, charge ...

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