Sistema tátil flexível com sensores óticos multiplexados baseados em macrocurvatura

• Ano de defesa: 2020
• Autor(a) principal: Lugarini, Diogo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Brasil; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial; UTFPR
• Palavras-chave em Português: Detectores ópticos; Fibras ópticas; Curvatura; Multiplexação; Análise espectral; Análise de regressão; Processamento de sinais - Modelos matemáticos; Optical detectors; Optical fibers; Curvature; Multiplexing; Spectrum analysis; Regression analysis; Signal processing - Mathematical models; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA; Engenharia Elétrica
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/5236

In this work, fabrication and testing of a tactile sensing array consisting of 4 macrobend optical fiber sensors, multiplexed and encapsulated in silicone are presented. The array transmission spectra in the visible spectral range carries information used for the sensing system interrogation. Intensity at different wavelengths of the transmission spectrum is affected by external perturbations caused by loads applied on the array surface, allowing tactile sensing. The coupled response of the 4 sensors allowed the identification of the magnitude and position of loads applied simultaneously in up to 5 previously established sensing regions. Linear regressions were used in the analysis of the transmission spectra obtained when the array was submitted to loads from 0.0 kg to 2.0 kg. Tactile sensing with fewer sensors than the number of sensing regions has been achieved. The system was able to recognize the magnitude and location of loads with an error of 0.208 kg using Ridge regression. This error represents 10.40 % of the highest applied load per region and 3.47 % of the highest total load applied on the sensing array.