Now showing items 1-20 of 425

    • A 36 µW 1.1 mm2 reconfigurable analog front-end for cardiovascular and respiratory signals recording 

      Xu, Jiawei; Konijnenburg, Mario; Ha, Hyunsoo; van Wegberg, Roland; Song, Shuang; Blanco Almazán, María Dolores; Van Hoof, Chris; Van Helleputte, Nick (2018-04-06)
      Article
      Open Access
      This paper presents a 1.2 V 36 µW reconfigurable analog front-end (R-AFE) as a general-purpose low-cost IC for multiple-mode biomedical signals acquisition. The R-AFE efficiently reuses a reconfigurable preamplifier, a ...
    • A calibratable detector for invasive attacks 

      Weiner, Michael; Wieser, Wolfgang; Lupón Roses, Emilio; Sigl, Georg; Manich Bou, Salvador (2019-01-25)
      Article
      Restricted access - publisher's policy
      Microprobing is commonly used by adversaries to extract firmware or cryptographic keys from microcontrollers. We introduce the calibratable lightweight invasive attack detector (CaLIAD) to detect microprobing attacks. The ...
    • A clinically assisted collaborative system architecture for preventing falls in elderly people 

      Orozco, Javier; Santos, Rodrigo; Ochoa, Sergio; Meseguer Pallarès, Roc; Baloian, Nelson (2014)
      Conference report
      Restricted access - publisher's policy
      Falls in older adults are not only frequent but also potentially disabling for them. Detecting and preventing these falls have an important impact in the life of the elderly people. This paper presents the architecture ...
    • A comparison of heartbeat detectors for the seismocardiogram 

      García González, Miguel Ángel; Argelagós Palou, Ariadna; Fernández Chimeno, Mireya; Ramos Castro, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference lecture
      Open Access
      The study aimed to study the accuracy in RR time series derived from the seismocardiogram when employing different heartbeat detectors in subjects measured in a quiet environment. The ECG and seismocardiogram of 17 healthy ...
    • A comprehensive high-level model for CMOS-MEMS resonators 

      Banerji, Saoni; Fernández, Daniel; Madrenas Boadas, Jordi (2018-01-24)
      Article
      Open Access
      This paper presents a behavioral modeling technique for CMOS microelectromechanical systems (MEMS) microresonators that enables simulation of an MEMS resonator model in Analog Hardware Description Language format within a ...
    • A contactless capacitive angular-position sensor 

      Gasulla Forner, Manuel; Li, Xiujun; Meijer, Gerard C. M.; Van der Ham, Lucas; Spronck, Jo W. (Institute of Electrical and Electronics Engineers, 2003-10)
      Article
      Open Access
      This paper presents an absolute capacitive angular-position sensor with a contactless rotor. The sensor is mainly composed of three parts: the capacitive sensing element, a signal processor, and a microcontroller. The ...
    • A critical period of susceptibility to sound in the sensory cells of cephalopod hatchlings 

      Solé Carbonell, Marta; Lenoir, Marc; Fortuño Alós, Jose-Manuel; Van der Schaar, Mike Connor Roger Malcolm; André, Michel (2018-01-01)
      Article
      Open Access
      The cephalopod statocyst and lateral line systems are sensory organs involved in orientation and balance. Lateral lines allow cephalopods to detect particle motion and are used for locating prey or predators in low light ...
    • A Fully Differential Synchronous Demodulator for AC Signals 

      González Landaeta, Rafael; Cota Ruiz, Juan; Sifuentes, Ernesto; Díaz, José; Casas Piedrafita, Óscar (2019-02-22)
      Article
      Restricted access - publisher's policy
      A novel fully differential (FD) demodulator is presented. Using different design strategies, the circuit can be used for processing amplitude-modulated (AM) signals obtained from impedance measurements or coming from ...
    • A high-speed capacitive-sensor interface using a relaxation oscillator and a fast counter 

      Gasulla Forner, Manuel; Li, Xiujun; Meijer, Gerard C. M. (Institute of Electrical and Electronics Engineers, 2003-05)
      Conference report
      Open Access
      This paper presents the analysis and experimental results on the jitter of a capacitive-sensor interface. The interface is implemented with a simple relaxation oscillator, a fast counter and a microcontroller. The goal ...
    • A joint model for 2D and 3D pose estimation from a single image 

      Simó Serra, Edgar; Quattoni, Ariadna Julieta; Torras, Carme; Moreno-Noguer, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      We introduce a novel approach to automatically recover 3D human pose from a single image. Most previous work follows a pipelined approach: initially, a set of 2D features such as edges, joints or silhouettes are detected ...
    • A knowledge-based approach to automatic detection of equipment alarm sounds in a neonatal intensive care unit environment 

      Raboshchuk, Ganna; Nadeu Camprubí, Climent; Jancovic, Peter; Peiró Lilja, Alexandre Cristian; Kokuer, Munevver; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana (2017-12-21)
      Article
      Open Access
      A large number of alarm sounds triggered by biomedical equipment occur frequently in the noisy environment of a neonatal intensive care unit (NICU) and play a key role in providing healthcare. In this paper, our work on ...
    • A method for fault detection and diagnostics in ventilation units using virtual sensors 

      Giovanni Mattera, Claudio; Quevedo Casín, Joseba Jokin; Escobet Canal, Teresa; Reza Shaker, Hamir; Jradi, Muhyiddine (Multidisciplinary Digital Publishing Institute (MDPI), 2018-11-14)
      Article
      Open Access
      Buildings represent a significant portion of global energy consumption. Ventilation units are complex components, often customized for the specific building, responsible for a large part of energy consumption. Their faults ...
    • A method to build unique calibration models for batches of chemical sensor arrays 

      Fonollosa Magrinyà, Jordi; Rodriguez-Perez, Raquel; Solórzano, Ana; Padilla, Marta; Graunke, Thorsten; Marco, Santiago (2016)
      Conference report
      Open Access
    • A miniaturized 3d heat flux sensor to characterize heat transfer in regolith of planets and small bodies 

      Domínguez Pumar, Manuel; Rodríguez Manfredi, José Antonio; Jiménez Serres, Vicente; Bermejo Broto, Sandra; Pons Nin, Joan (Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-01)
      Article
      Open Access
      The objective of this work is to present the first analytical and experimental results obtained with a 3D heat flux sensor for planetary regolith. The proposed structure, a sphere divided in four sectors, is sensible to ...
    • A nanometric displacement measurement system using differential optical feedback interferometry 

      Azcona Guerrero, Francisco Javier; Atashkhooei, Reza; Royo Royo, Santiago; Méndez Astudillo, Jorge; Jha, Ajit (2013-11-01)
      Article
      Restricted access - publisher's policy
    • A novel low-cost smart leaf wetness sensor 

      Hornero Ocaña, Gemma; Gaitán Pitre, Jorge Eliécer; Serrano Finetti, Roberto Ernesto; Casas Piedrafita, Óscar; Pallàs Areny, Ramon (2017-12-01)
      Article
      Open Access
    • A novel sensor-bridge-to-microcontroller interface 

      Custodio Ruiz, Ángel; Bragós Bardia, Ramon; Pallàs Areny, Ramon (Institute of Electrical and Electronics Engineers, 2001-05)
      Conference report
      Open Access
      Sensor bridges are usually interfaced to microcontrollers by supplying the bridge with a voltage or current and digitizing the resulting voltage or current after being amplified and low-pass filtered. This paper proposes ...
    • A review of commercial energy harvesters for autonomous sensors 

      Penella López, María Teresa; Gasulla Forner, Manuel (2007-05-01)
      Conference report
      Open Access
      Current commercial autonomous sensors are mainly powered by primary batteries. Batteries need to be replaced and hence can become the largest and most expensive part of the system. On the other hand, our environment is ...
    • A review of flexible wearable antenna sensors: design, fabrication methods, and applications 

      El Gharbi, Mariam; Fernández García, Raúl; Ahyoud, Saida; Gil Galí, Ignacio (Multidisciplinary Digital Publishing Institute (MDPI), 2020-08-27)
      Article
      Open Access
      This review paper summarizes various approaches developed in the literature for antenna sensors with an emphasis on flexible solutions. The survey helps to recognize the limitations and advantages of this technology. ...
    • A sensor data fusion system based on k-nearest neighbor pattern classification for structural health monitoring applications 

      Vitola Oyaga, Jaime; Pozo Montero, Francesc; Tibaduiza Burgos, Diego Alexander; Anaya Vejar, Maribel (2017-02-21)
      Article
      Open Access
      Civil and military structures are susceptible and vulnerable to damage due to the environmental and operational conditions. Therefore, the implementation of technology to provide robust solutions in damage identification ...