ࡱ> 02/J bjbjUU >??J88{#{#{#{#{##### # #`$h########$$$$$$$%j(L${######${#{###$####{##{##$##$####L6####0$0`$#(#(#({##H########$$####`$####(#########8 A":Resumo H vrios desafios na criao de sistemas de monitoramento com redes de sensores: componentes fsicos so altamente heterogneos, sofrem avaria, so substitudos, dados so gerados massivamente e devem ser gerenciados, armazenados e compartilhados com outros sistemas. Neste trabalho, propomos o OSIRIS, um framework para construo de sistemas de monitoramento baseado em redes de sensores. Ele oferece recursos para coletar, processar, armazenar e disponibilizar dados sensoriais para outras aplicaes e/ou sistemas, alm de monitorar a prpria rede sensora. O diferencial do OSIRIS a flexibilidade na criao de sistemas de monitoramento diversos e o desacoplamento entre a rede de sensores e a aplicao final, que obtido a partir de um conjunto de abstraes definidos no framework. A proposta apresentada aqui foi avaliada atravs de diferentes experimentos de submisso e consumo de dados sensoriais com o intuito de mensurar a performance da implementao do OSIRIS. Palavras-chave: Sistemas de monitoramento, redes de sensores, framework, sensor virtual, abstrao de dados. ef W X   c d  _ ` I J hIhXY^JhIhXY5\mHsHhXY^JmHsHhIhXY^JmHsHhXYmHsHhIhXYmHsH 6 J d7$8$H$gdI$d7$8$H$a$gdg4{gdIgdI<P1h:p\F. 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