Optical fiber tactile sensor based on fiber specklegram analysis

Author(s)

Fujiwara, Eric ; Paula, Francine D. ; Wu, Yu Tzu ; Santos, Murilo F. M. ; Schenkel, Egont A. ; Suzuki, Carlos K. ; IEEE

• Document type: Journal article
• Source: 2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS); v. 10323, p. 4-pg., 2017-01-01.

Abstract

An optical fiber tactile sensor based on specklegram analysis is demonstrated. The system consists of microbending transducers attached to semi-rigid plates and distributed in form of array. The specklegrams produced by the multimode fibers are recorded and them the variations on fiber status, related to force magnitude, are assessed by specklegrams correlation. Finally, the spatial information was obtained by using a data fusion approach based on Bayesian inference. The sensor presented similar to 0.08 N sensitivity and similar to 1 mm resolution. Moreover, the data fusion technique provided the estimation of force distribution over a 30 x 30 mm(2) area using only 3 fibers. (AU)

• FAPESP's process: 14/25080-0 - Development of an optical fiber based tactile sensor system for applications in mechatronics
• Grantee: Eric Fujiwara
• Support Opportunities: Regular Research Grants