Title: Optical fibre grating three dimensional forcel displacement sensor
Application Number: 200610016178 Application Date: 2006.10.20
Publication Number: 1945217 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D5/34;G01D5/353;G01L1/24;G01B11/16
Applicant(s) Name: Nankai Univ. Address:
Inventor(s) Name: Liu Bo;Kai Guiyun;Dong Xiaoyi;Dong Zhengrong;Liu Y
Attorney & Agent: houli
Abstract:
    The optical fiber grating 3D force/displacement sensor includes 3 or more optical fiber gratings adhered to the surface of a cylinder axially in parallel in the same angle for use as basic sensor devices, monomode fibers to connect the optical fiber gratings to one optical branching device, one light source and one wavelength demodulator connected via monomode fibers to the optical branching device. When some force or displacement is applied to some point in the cylinder, these Bragg fiber gratings with different reflecting peaks with produce different drifts, so that the force or displacement may be calculated. Based on relevant material mechanics principles, the magnitude and direction of the force and displacement of the cylinder in 3D space may be calculated, and the 3D force and displacement may be sensed and measured.
Time: 8