Development of a tactile sensor based on optical fiber specklegram analysis and sensor data fusion technique
ARTIGO
Inglês
The development of a tactile sensor based on optical fiber specklegram analysis is reported. The device is comprised of 9 microbending transducers connected to 3 multimode fibers, and attached to a 30 × 30 mm2 touching surface in a matrix arrange. The output fiber speckle fields, produced by...
The development of a tactile sensor based on optical fiber specklegram analysis is reported. The device is comprised of 9 microbending transducers connected to 3 multimode fibers, and attached to a 30 × 30 mm2 touching surface in a matrix arrange. The output fiber speckle fields, produced by coherent light transmission through the multimode waveguides, are processed for evaluation of the normalized inner-product coefficients, being further correlated to the external load characteristics according to a specklegram referencing approach. Finally, the magnitude and location of the forces applied over the tactile frame are estimated by means of a data fusion technique, yielding the probabilistic distribution of the mechanical disturbances. The sensor characterization indicated a 0.5 N−1 sensitivity, with capability to detect variations of 1 mm in force location, being comparable to the requirements for tactile technologies. Moreover, the data fusion approach provided the estimation of the load distribution with 0.86 relative accuracy, allowing the assessment of tactile variables based on the response of only 3 sensing fibers and without utilizing wavelength multiplexing schemes
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2014/25080-0
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
Fechado
Development of a tactile sensor based on optical fiber specklegram analysis and sensor data fusion technique
Development of a tactile sensor based on optical fiber specklegram analysis and sensor data fusion technique
Fontes
Sensors and actuators A: physical: an international journal devoted to research and development of physical and chemical transducers Vol. 263 (Aug., 2017), p. 677-686 |