Exploració per tema "Wireless sensor networks"

Ara es mostren els items 145-164 de 200

    • Radiofrequency remote powering of wireless sensors over a frequency range of 863/870 MHz 

      Salvatore, Marco (Universitat Politècnica de Catalunya, 2008-10-30)
      Projecte/Treball Final de Carrera
      Accés obert
      The objective of this thesis is to draw, simulate and optimize a remote alimentation device for a wireless sensor, low power, short range, powered by the energy transported over the RF signal. This signal working at UHF ...

    • Range extension of passive wake-up radio systems through energy harvesting 

      Chen, Li; Cool, Stephen; Ba, He; Heinzelman, Wendi; Demirkol, Ilker Seyfettin; Muncuk, Ufuk; Chowdhury, Kaushik Roy; Basagni, Stefano (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Use of a passive wake-up radio can drastically increase the network lifetime in a sensor network by reducing or even completely eliminating unnecessary idle listening. A sensor node with a wake-up radio receiver (WuRx) can ...

    • REACH2-Mote: a range-extending passive wake-up wireless sensor node 

      Chen, Li; Warner, Jeremy; Yung Pak, Lam; Zhou, Dawei; Heinzelman, Wendi; Demirkol, Ilker Seyfettin; Muncuk, Ufuk; Chowdhury, Kaushik Roy; Basagni, Stefano (2015-11-01)
      Article
      Accés obert
      A wireless sensor network that employs passive radio wake-up of the sensor nodes can reduce the energy cost for unnecessary idle listening and communication overhead, extending the network lifetime. A passive wake-up radio ...

    • Real deployment of consensus algorithm on self-organized wireless sensor networks 

      Brahim, Elbhiri; Pagès Zamora, Alba Maria; Aboutajdine, Driss (2009)
      Text en actes de congrés
      Accés obert
      Reaching consensus on a self-organized wireless sensor networks through totally decentralized algorithms is a topic that has attracted considerable attention. The average consensus method is the most popular algorithm ...

    • Real-Time data processing for the airborne detection of hot spots 

      Salamí San Juan, Esther; Barrado Muxí, Cristina; Pastor Llorens, Enric; Royo Chic, Pablo; Santamaria Barnadas, Eduard (American Institute of Aeronautics and Astronautics (AIAA), 2013-10)
      Article
      Accés restringit per política de l'editorial
      ATELLITES and aircraft have traditionally been the primary source of remote sensing data. The increasing number of satellite constellations and the improvement of the quality of airborne sensors have produced a great deal ...

    • RealNet – Red ambiental del Campus del Baix Ll. 

      Castillo Galán, Ivan; Bascones González, Enrique (Universitat Politècnica de Catalunya, 2008-06-09)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      En este proyecto se ha implementado un interfaz gráfico para una red de sensores medioambientales inalámbricos basados en la especificación ZigBee. El sistema presentado gestiona la captura y almacenamiento de los datos, ...

    • Reconfigurable medium access control solutions for resource constrained wireless networks 

      Arbós Linio, Noemí (Universitat Politècnica de Catalunya, 2012-09-25)
      Projecte Final de Màster Oficial
      Accés obert
      Wireless Sensor Networks (WSNs) consist of several autonomous resource constrained sensor nodes distributed over a geographical area. The sensor nodes can measure, for instance humidity, temperature or vibration. Therefore, ...

    • Red privada LoRaWan para el ámbito de aplicaciones en la Industria 4.0 

      Rodríguez Díaz, Daniel (Universitat Politècnica de Catalunya, 2021-10-19)
      Treball Final de Grau
      Accés obert
      En este proyecto se ha realizado el montaje y configuración de una red privada LoRaWAN (Long Range Wide Area Network), imitando la estructura que esta debería tener para ser implementada en la industria 4.0. Este tiene ...

    • Reducing energy consumption in human-centric wireless sensor networks 

      Meseguer Pallarès, Roc; Molina Clemente, Carlos; Ochoa, Sergio; Santos, Rodrigo (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Energy consumption is a main research issue in wireless sensor networks; and particularly in those where nodes collaborate to reach a goal. This article explores the energy consumption in mobile devices participating ...

    • Redundancy elimination for data aggregation in wireless sensor networks 

      Viñas Raventos, Guillem (Universitat Politècnica de Catalunya, 2015-08-27)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Technische Universität Chemnitz
      In this bachelor thesis, design a robust and efficient data aggregation scheme that considers the unique characteristics of WSNs is designed. All used processes and techniques have been focused in the field of agriculture. ...

    • RESTful Web services in Wireless Sensor Networks 

      Moreno Yeste, Pol (Universitat Politècnica de Catalunya, 2011-10-17)
      Projecte/Treball Final de Carrera
      Accés obert
      English: Wireless Sensor Networks (WSNs) have become very popular in recent years. A WSN consists of distributed autonomous sensors to monitor physical or environmental conditions and to cooperatively send their data through ...

    • RLNC-aided cooperative compressed sensing for energy efficient vital signal telemonitoring 

      Lalos, Aristeidis; Antonopoulos, Angelos; Kartsakli, Elli; Di Renzo, Marco; Tennina, Stefano; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2015-07-01)
      Article
      Accés obert
      Wireless body area networks (WBANs) are composed of sensors that either monitor and transmit vital signals or act as relays that forward the received data to a body node coordinator (BNC). In this paper, we introduce an ...

    • Routing efficiency in wireless sensor-actor networks considering semi-automated architecture 

      Barolli, Leonard; Yang, Tao; Mino, Gjergji; Xhafa Xhafa, Fatos; Durresi, Arjan (2010)
      Article
      Accés obert
      Wireless networks have become increasingly popular and advances in wireless communications and electronics have enabled the development of different kind of networks such as Mobile Ad-hoc Networks (MANETs), Wireless Sensor ...

    • Routing efficiency of AODV and DSR protocols in ad-hoc sensor networks 

      Yang, Tao; Ikeda, Makoto; De Marco, Giuseppe; Barolli, Leonard; Durresi, Arjan; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Text en actes de congrés
      Accés obert
      In this paper, we consider the performance behavior of two protocols: AODV and DSR using TwoRayGround model. We study the routing efficiency of the ad-hoc sensor network and compare the performance of two protocols for ...

    • RPL optimización en WSN 

      Sanz Bouzo, Jana (Universitat Politècnica de Catalunya, 2016-06-22)
      Projecte/Treball Final de Carrera
      Accés restringit per acord de confidencialitat

    • Runtime extension of low-power wireless sensor nodes using hybrid-storage units 

      Penella López, María Teresa; Gasulla Forner, Manuel (2010-03)
      Article
      Accés obert
      The sensor nodes of wireless sensor networks remain inactive most of the time to achieve longer runtimes. Power is mainly provided by batteries, which are either primary or secondary. Because of its internal impedance, a ...

    • Sampling trade-offs in duty-cycled systems for air quality low-cost sensors 

      Ferrer Cid, Pau; García Calvete, Julio; Main Nadal, Aina; Ye, Zhe; Barceló Ordinas, José María; García Vidal, Jorge (Multidisciplinary Digital Publishing Institute (MDPI), 2022-05-23)
      Article
      Accés obert
      The use of low-cost sensors in conjunction with high-precision instrumentation for air pollution monitoring has shown promising results in recent years. One of the main challenges for these sensors has been the quality of ...

    • SecUAV - A Uni_ed testbed for the evaluation of secure state estimators 

      Ploder, Oliver (Universitat Politècnica de Catalunya, 2018-07)
      Projecte Final de Màster Oficial
      Accés obert
      Rapidly evolving technology and tight coupling of physical sensors and actuation with the system behind it in Cyber Physical Systems (CPS) have opened up new forms of security vulnerabilities to adversaries. These new types ...

    • Seguridad estandarizada en la IoT: estado del arte y estudio 

      Cruz Gines, Alberto (Universitat Politècnica de Catalunya, 2015-05-28)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      [ANGLÈS] We have seen how the Smart Cities have increased the last years. A lot of cities want to be technologically strong, attractive, innovative and sustainable for the citizens. This project is based on several points ...

    • Selection of the reference anchor node by using SNR in TDOA-based positioning 

      René Jativa, E.; Ortiz, Diego; Venegas, Pablo; Vidal Manzano, José (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article studies the positioning problem for wireless networks when TDOA measures are used and the reference anchor node is not previously known. We carried out various experiments to show the impact on accuracy when ...