Title:
振動検知光ファイバセンサ及び振動検知方法
Document Type and Number:
Japanese Patent JP7059689
Kind Code:
B2
Abstract:
To enable highly sensitive vibration detection with a low cost constitution without using an expensive polarimeter.SOLUTION: A vibration detection optical fiber sensor comprises a light source part 10, an optical fiber 20 and a polarization state measurement part 30. The light source part generates probe light which periodically becomes a first to N-th (N is an integer of 2 or greater) polarization state. The optical fiber propagates the probe light which has been input from one end side and outputs the same from the other end side as output light. The polarization state measurement part receives the output light at a photodetector 34 through a polarizer 32.SELECTED DRAWING: Figure 1
More Like This:
| JPS59166803 | ABNORMALITY DETECTING SYSTEM USING OPTICAL FIBER |
| JP7097517 | Pressure sensor |
| JP2007519909 | Methods and equipment for detecting turbine impeller vibrations |
Inventors:
Yoshihiro Kanda
Application Number:
JP2018032348A
Publication Date:
April 26, 2022
Filing Date:
February 26, 2018
Export Citation:
Assignee:
Oki Electric Industry Co., Ltd.
International Classes:
G01H9/00; G01L1/24
Domestic Patent References:
| JP2008203239A | ||||
| JP2017083294A | ||||
| JP2006209575A | ||||
| JP2010127705A |
Attorney, Agent or Firm:
Hiroyuki Okada
Takashi Ogaki
Takashi Ogaki