光ファイバケーブルセンシング装置、光ファイバケーブルセンシング方法、及びプログラム

Japanese Patent JP7315009

B2

The present invention intends to provide an optical fiber cable sensing apparatus capable of measuring longitudinal directional distribution of curvature and torsion, without using a specially structured optical fiber sensor. This apparatus includes means for inputting data of longitudinal directional distribution of distortion (bending loss, polarization variation) measured for each optical fiber accommodated in an optical fiber cable to be measured and data indicating the position of each measurement object optical fiber on a cable cross section, means for calculating curvature vector κ of the optical fiber cable to be measured, at the same spot, based on the distortion (bending loss, polarization variation) of each optical fiber at the spot and the position of the optical fiber on the cable cross section, and means for calculating torsion τ of the optical fiber cable to be measured at the spot from the calculated curvature vector κ.

JP2002236078	DEVICE FOR MEASURING DISTRIBUTION OF WAVELENGTH DISPERSION, AND MEASURING METHOD THEREOF
JP2001255234	INSPECTION METHOD FOR COLOR FILTER AND INSPECTION MASK USED FOR IT

Daisuke Iida
Keiji Okamoto
Hiroyuki Oshida

JP2021543835A

July 26, 2023

September 03, 2019

Click for automatic bibliography generation  

Nippon Telegraph and Telephone Corporation

G01M11/00; G01B11/16; G01B11/24

JP2016102689A
JP2005183411A

US20180238680
WO2018075911A1

MOORE, Jason P.,Shape sensing using multi-core fiber optic cable and parametric curve solutions,OPTICS EXPRESS,2011年01月30日,Vol.20 No.3,pp.2967-2973
SZOSTKIEWICZ, Lukasz,High-resolution distributed shape sensing using phase-sensitive optical time-domain reflectometry an,Optics Express,2019年07月10日,Vol.27 No.15,pp.20763-20773

Kenji Okada
Masaaki Hata
Katsuhiro Imashita

Previous Patent: Room temperature curable resin composition, coating agent, adhesive and sealant, and article

Next Patent: RADIAL TIRE FOR MOTORCYCLE