Ponencias (Arquitectura y Tecnología de Computadores)

URI permanente para esta colecciónhttps://hdl.handle.net/11441/11294

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Determination of a Power-Saving Method for Real- Time Wireless Sensor Networks
(IEEE Computer Society, 2010) Cascado Caballero, Daniel; Sevillano Ramos, José Luis; Jiménez Fernández, Ángel Francisco; Civit Balcells, Antón; Íñigo Blasco, Pablo; Font Calvo, Juan Luis; Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores; Junta de Andalucía; Universidad de Sevilla. TEP-108: Robótica y Tecnología de Computadores Aplicada a la Rehabilitación
In wireless sensor networks, battery life is a key resource that must be conserved as much as possible. Nowadays, the main way of achieve power saving in this type of circuits is to implement low-power RF (Radio Frequency) circuitry and network protocols that try to minimize the number of transmissions by the air. We think that adaptation to RF environment can minimize the power consumption and supply an extra saving of energy in this type of systems. This paper presents a power-saving method for wireless sensor networks with realtime constrains. Description of an example of this type of systems will be done in order to supply background where needs and challenges will be presented. Then, method will be presented with some results in order to obtain conclusions and an estimation of future works and applications.
Technical viability study for behavioral monitoring of wildlife animals in Doñana: An 802.15.4 coverage study in a Natural Park
(IEEE Computer Society, 2011) Domínguez Morales, Manuel Jesús; Jiménez Fernández, Ángel Francisco; Cascado Caballero, Daniel; Linares Barranco, Alejandro; Paz Vicente, Rafael; Jiménez Moreno, Gabriel; Soriguer, R.; Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores; Consejo Superior de Investigaciones Científicas (CSIC); Universidad de Sevilla. TEP-108: Robótica y Tecnología de Computadores Aplicada a la Rehabilitación
The study and monitoring of wildlife and in semi-freedom has always been a subject of great interest. In recent years the technology allows to design low cost systems that facilitate these tasks: microcontrollers, low-power wireless networks, sensors. GPS, satellite and VHF has been used for position tracking and localization of wildlife. Our aim is to design a low-cost system for local monitoring of wildlife (collar or harness) with local memory and remote access. It will use multiples sensors for behavioral and health monitoring and fuse the processed information locally to reduce the stored data, but allowing to be sporadically transmitted through wireless networks. This collar will be based on an embedded low-power microcontroller with 802.15.4 transceiver and a set of sensors to provide data (activity and health) of the animal under monitoring: accelerometers, compass, humidity, temperature, light, microphone, heart rhythm. This collar is called mote in wireless sensors network (WSN) terminology. Only when one mote is closer to an 802.15.4 mote and under request, the collar will dump the information to a host database server through the 802.15.4 network. In this paper we present a viability study of the WSN for Doñana Natural Park for different mote transmission powers, frequencies and distances for coverage. ZigBee and XBee mote has been proven.

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Examinando Ponencias (Arquitectura y Tecnología de Computadores) por Materia "802.15.4"