Title:
ＦＢＧセンサの多点計測方法および多点計測装置
Document Type and Number:
Japanese Patent JP5628779
Kind Code:
B2
Abstract:
A multi-point measuring apparatus of FBG sensor has an optical fiber 4, a wide-band wavelength light source 9, a light-source side light modulator 10 for controlling time of a light entering into the optical fiber 4, among lights from this light source, a detector side light modulator 12 for controlling time, during which a reflection light from a diffraction grating of the optical fiber 4 penetrates through, a wavelength shift amount calculator 14 for processing a signal obtained through detection of the reflection light from this light modulator, so as to separate a signal from the optical fiber 4, a temperature/distortion calculator 15 for calculating an amount of deformation of a target to be measured from a result of this calculator, and a display portion 16 for displaying information relating to the amount of deformation of this target to be measured, and thereby providing a multi-pint measuring method and an apparatus of FBF sensor, enabling to measure the FBG sensors of plural pieces of optical fibers, without using an optical switch therein, even under the condition of applying the plural pieces of the optical fibers in one (1) piece of a transmission path.
More Like This:
| JPS61170604 | METHOD FOR MEASURING DISTORTION OF OPTICAL TRANSMISSION LINE |
| JP2012018027 | SURFACE STRAIN INSPECTION METHOD |
Inventors:
▲吉▼田 実
渡辺 正浩
針山 達雄
渡辺 正浩
針山 達雄
Application Number:
JP2011263252A
Publication Date:
November 19, 2014
Filing Date:
December 01, 2011
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G01B11/16; G01D5/353; G01K11/12
Attorney, Agent or Firm:
Tsutsui Daiwa