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Revisão de Tecnologias Aplicáveis em Telemedicina
P.P. Silva, Aluno do Curso de Pós Graduação em Engenharia Elétrica, Universidade Federal do ABC,
Abstract – Os avanços tecnológicos das ultimas décadas tem permitido a miniaturização dos circuitos eletrônicos em escalas que chegam à microscópica, criando dispositivos leves, de baixo custo, tamanho reduzido e capazes de executar mais de uma função. Em paralelo este avanço da tecnologia permitiu também que circuitos de comunicação sem fios ficassem cada vez menores, mais baratos e mais eficientes, e os telefones portáteis ganharam com esta miniaturização um crescente poder de processamento, armazenamento e comunicação. Hoje, o acesso a tudo isto é relativamente fácil e através da integração de todas estas tecnologias, pode-se formar uma rede de “sensores inteligentes” capaz de coletar informações do corpo do paciente em tempo real, armazenar e gerenciar os dados, inclusive informando imediatamente ao médico caso algum parâmetro fique fora do limite, através da comunicação móvel celular de dados.
Index Terms -- Saúde, Transmissão sem fios, Medição
D ESDE a invenção do primeiro aparelho de Eletro Cardio Grama por Norman Holter em 1949, muito tem sido feito para se reduzir o tamanho e aumentar a eficiência dos dispositivos de uso médico, permitindo a execução de exames em pontos de difícil acesso do corpo sem a necessidade de intervenção cirúrgica. Os sensores, sondas e outros dispositivos de medida tornaram se mais, leves, confortáveis e com um custo mais acessível. Utilizando se como ponto central a utilização de modernos micro-controladores, pode-se criar uma série de blocos sensores que podem não só captar os sinais vitais, como também julga-los quanto aos seus limites pré estabelecidos enviando o status a um ponto central da rede sempre que algo estiver fora dos parâmetros. Como a aquisição dos sinais vitais do corpo humano é lenta, se comparada a capacidade de processamento dos micro controladores, durante o tempo ocioso ele entra em estado de hibernação poupando energia, e
reduzindo o tamanho da bateria embarcada no circuito.
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Periodicals: J. F. Fuller, E. F. Fuchs, and K. J. Roesler, "Influence of harmonics on power
distribution system protection," IEEE Trans. Power Delivery, vol. 3, pp. 549-557, Apr. 1988.
E. H. Miller, "A note on reflector arrays," IEEE Trans. Antennas Propagat., to be published.
R. J. Vidmar. (1992, Aug.). On the use of atmospheric plasmas as electromagnetic reflectors. IEEE Trans. Plasma Sci. [Online]. 21(3) , pp. 876-880. Available: http://www.halcyon.com/pub/journals/21ps03- vidmar
Books: E. Clarke, Circuit Analysis of AC Power Systems, vol. I. New York: Wiley,
1950, p. 81. G. O. Young, "Synthetic structure of industrial plastics," in Plastics, 2nd ed.,
vol. 3, J. Peters, Ed. New York: McGraw-Hill, 1964, pp. 15-64. J. Jones. (1991, May 10). Networks. (2nd ed.) [Online]. Available: http://
Technical Reports: E. E. Reber, R. L. Mitchell, and C. J. Carter, "Oxygen absorption in the
Earth's atmosphere," Aerospace Corp., Los Angeles, CA, Tech. Rep. TR-0200 (4230-46)-3, Nov. 1968.
S. L. Talleen. (1996, Apr.). The Intranet Architecture: Managing information in the new paradigm. Amdahl Corp., Sunnyvale, CA. [Online]. Available: http://www.amdahl.com/doc/products/bsg/intra/ infra/html
Papers Presented at Conferences (Unpublished): D. Ebehard and E. Voges, "Digital single sideband detection for
interferometric sensors," presented at the 2nd Int. Conf. Optical Fiber Sensors, Stuttgart, Germany, 1984.
Process Corp., Framingham, MA. Intranets: Internet technologies deployed behind the firewall for corporate productivity. Presented at INET96 Annu. Meeting. [Online]. Available: http://home.process.com/ Intranets/ wp2.htp
Papers from Conference Proceedings (Published): J. L. Alqueres and J. C. Praca, "The Brazilian power system and the
challenge of the Amazon transmission," in Proc. 1991 IEEE Power Engineering Society Transmission and Distribution Conf., pp. 315-320.
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dynamics incorporating models with time periodic coefficients," Ph.D. dissertation, Dept. Aerosp. Eng., Univ. Maryland, College Park, 1997.
Standards: IEEE Guide for Application of Power Apparatus Bushings, IEEE Standard
C57.19.100-1995, Aug. 1995.
Patents: G. Brandli and M. Dick, "Alternating current fed power supply," U.S. Patent
4 084 217, Nov. 4, 1978.
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Nikola Tesla (M’1888, F’17) was born in Smiljan in the Austro-Hungarian Empire, on July 9, 1856. He graduated from the Austrian Polytechnic School, Graz, and studied at the University of Prague.
His employment experience included the American Telephone Company, Budapest, the Edison Machine Works, Westinghouse Electric Company, and Nikola Tesla Laboratories. His special fields of interest included high frequency.
Tesla received honorary degrees from institutions of higher learning including Columbia University, Yale University, University of Belgrade, and the University of Zagreb. He received the Elliott Cresson Medal of the Franklin Institute and the Edison Medal of the IEEE. In 1956, the term "tesla" (T) was adopted as the unit of magnetic flux density in the MKSA system. In 1975, the Power Engineering Society established the Nikola Tesla Award in his honor. Tesla died on January 7, 1943.
Editor's Note: J. W. Hagge was chair of the PES Technical Council and L. L. Grigsby was chair of the PES Publications Department when the original version of this document was published (January 1, 1993).