Sistema de processamento de sinais biomédicos

Sistema de processamento de sinais biomédicos

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A primeira versApo da tecnologia wireless (sem fio) ZigBee surgiu em dezembro de 2004, como um novo padrApo definido pelo IEEE 802.15.4 para transmissApo digital a curto alcance. Esta tecnologia incorpora diversas vantagens frente Ans demais, principalmente quanto ao seu baixAsssimo consumo de energia e baixas taxas de transmissApo, atAc 250 Kbps. Isso faz do ZigBee uma atraente alternativa para projetos de monitoraAsApo e sensoriamento remoto, em que os requisitos passam a ser superdimensionados com o emprego das demais tecnologias, como por exemplo, Bluetooth e WiFi. O presente trabalho aborda o desenvolvimento e a implementaAsApo de mA³dulos wireless para comunicar um sistema microcontrolado a um microcomputador, compondo o Sistema de Processamento de Sinais BiomAcdicos (SPSB). Tem como objetivo monitorar e visualizar biossinais de maneira remota, no Acmbito da criaAsApo inicial de uma Plataforma DidAitica de Engenharia BiomAcdica visando o ensino de Engenharia BiomAcdica na graduaAsApo de Engenharia ElActrica equipando o LaboratA³rio de Engenharia BiomAcdica do Instituto de Engenharia BiomAcdica da Universidade Federal de Santa Catarina (IEB-UFSC). Para a construAsApo dos mA³dulos de comunicaAsApo wireless sApo especificados e incorporados dois dispositivos ZigBee OEM Maxstream XBeeTM. Um se comunica via USB com o microcomputador e o outro Ac conectado ao microcontrolador, ADuC 7026 da Analog Devices, atravAcs da interface serial UART com TX e RX em 115, 2 Kbps. Os dois mA³dulos XBeeTM formam entre si o enlace wireless ZigBee em conformidade com as normas ANATEL 02/93 e 012/96 nas resoluAsAmes 209/00, 305/02, 365/04. Os principais resultados apontam perdas quase nulas dos pacotes transmitidos a curto alcance e com atraso de comunicaAsApo de apenas 8 ms para qualquer distAcncia admissAsvel (atAc 30 m) entre os mA³dulos ZigBee. Isso garante o bom funcionamento e comprova a eficiAoncia da tecnologia empregada na transmissApo wireless adotada para os requisitos deste projeto. A proposta dos mA³dulos de transmissApo sem fios no SPSB surge para dar suporte ao ensino no LaboratA³rio de Engenharia BiomAcdica no que se referem Ans prA³prias tecnologias wireless, tendo em vista a recente inovaAsApo tecnolA³gica no contexto de transmissApo sem fios de dados digitais e a confiabilidade dos dados transmitidos nessa aplicaAsApo biomAcdica. The first version of wireless ZigBee technology show up in 2004's December, with a new standard defined by IEEE 802.15.4 for digital transmission in a short way. This technology goes away advantages side the others, especially because of your low decreasing energy consume and low baud rates. This make the ZigBee an attractive alternative for monitoring projects and remote sensing, where the requirements turn up in a high dimension with the engagement of another technologies, as examples, Bluetooth and WiFi. The present paper approach the development and the implementation of wireless models to connect a microcontroller to a personal computer (PC) composing the Biomedicals Signals Processing System (SPSB). The goal is to monitor and visualizes biosignals in a remote way, in the ambit of first creation of a Didactic Methodology of Biomedical Engineering, going with teach of Biomedical Engineering in the graduation of Electrical Engineering providing the Laboratory of the Biomedical Engineering in the Biomedical Engineering Institute of the Santa Catarina's Federal University (IEB-UFSC). To the elaboration of the wireless communication models are specificity and incorporate two devices of ZigBee OEM Maxstream XBeeTM. One of those communicates via USB with the PC and the other is connected to the microcontroller, ADuC 7026 of the Analog Devices, through the serial interface UART with TX and RX in 115.2 Kbps. Both the XBeeTM models compose together the wireless ZigBee enlace in conformity with the ANATEL 02/93 and 012/96 rules in the 209/00, 305/02 and 365/04 resolutions. The principal results do not show important losses in the information package in a short way and with delay of just 8 ms in the communication for any acceptable distance (up to 30 m) between the ZigBee models. This guaranty the well done and make certain the technology efficiency utilized in wireless transmission adopted for the conditions of this project. The propose of models of wireless transmission in SPSB show up to support about teach in Biomedical Engineering Laboratory with connected ideas with de wireless self technologies, look through the brand new technology innovation in the context of wireless transmission of digital information and credibility of transmitted information in this biomedical application.O presente trabalho aborda o desenvolvimento e a implementaAsApo de mA³dulos wireless para comunicar um sistema microcontrolado a um microcomputador, compondo o Sistema de Processamento de Sinais BiomAcdicos (SPSB).


Title:Sistema de processamento de sinais biomédicos
Author: Eduardo Andrighetto, Universidade Federal de Santa Catarina. Programa de Pós-Graduação em Engenharia Elétrica
Publisher: - 2008
ISBN-13:

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