Desenvolvimento de uma metodologia para análise do biospeckle laser com portabilidade, acessibilidade e robustez

• Ano de defesa: 2011
• Autor(a) principal: Chaves, Márcio José
• Orientador(a): Braga Júnior, Roberto Alves
• Banca de defesa: Botega, Juliana Vilela Lourençoni, Rabelo, Giovanni Francisco, Ferreira, Danton Diego
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: UNIVERSIDADE FEDERAL DE LAVRAS
• Programa de Pós-Graduação: DEG - Programa de Pós-graduação
• País: BRASIL
• Palavras-chave em Português: Speckle dinâmico; Secagem de tinta; Minimicroscópio; Webcam; Mouse óptico; Dynamic speckle; Mini cmicroscope; Optical mouse
• Área do conhecimento CNPq: CNPQ_NÃO_INFORMADO
• Link de acesso: https://repositorio.ufla.br/handle/1/1963

Currently, several technologies for data acquisition has allowed the interaction between man and the physical and biological phenomena that surround him. However, these techonologies have been contributing to science and industry area. Therefore, this paper showsome applications where it is possible to collect data in forms of digital images using portable devices of low cost for data acquisition to analysis using the speckle laser technique. Such devices are present in the everyday, as the case of webcams and optical mouses. Other equipment, less present and little higher cost, but that use the same technology of acquisition is the minimicroscope, which has higher resolution power of images and also a very high approximation capability. Another advantage this equipmentis simple use and your connection by USB, without the need ofa dedicated card for its operation. The use this equipment´s and its validation were realized at CEDIA, and the experiments were based another work known in the literature, it is the monitoring of the drying paint. The optical mouse in special feature was used in other tests, which has been monitoring their movement on the screen when excited by the reflected laser illuminating other surface in motion. The images collected by these devices were analyzed for inertia moment, and in experiments with larger number of data was realized using variance analysis to support the conclusions.The results showed that these devices are able to offer adequate data for analysis of speckle technique when used in the collection of images. In particular the mini microscope contributed to better performance, but the webcam is anequipment of easy use and can be used as a starting point for evaluating new experiments.