Research of space curve fitting based on FBG sensor technology

Abstract

Based on the principle of fiber bragg grating sensors, orthogonal multipoint curvature information can be detected by space division multiplexing technique (SDM) and wavelength division multiplexing technique (WDM). This paper discusses the space curve fitting based on this orthogonal discrete curvature information. To realize space curve fitting, the curvature information interpolation method and the curve fitting method are discussed. The visualization reconstruction software combined with VC++ and OpenGL technology was developed for simulation and experiment. Simulation results show that the interpolation method and fitting method can reflect the curved shape of space curve more accurately. And experiment results shows the curved shape perception and visualization reconstruction of experiment model with implantable distributed FBG sensor network exactly, dynamically based on FBG detection technology.