Title:
POSITION MEASUREMENT SYSTEM, POSITION MEASUREMENT DEVICE, AND POSITION MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/229833
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a position measurement system, a position measurement device, and a position measurement method with which it is possible to accurately measure the position of an object to be measured without being restricted by the environment and/or the optical axis. A position measurement device 20 according to the present invention is characterized by comprising a light reception unit 21 that receives scattering light Lsc emitted from a side surface of an optical fiber 50, a database 22 that stores the correlation between information on the scattering light and the position of the object to be measured, and a determination unit 23 that determines the position of the object to be measured from information on the scattering light received by the light reception unit on the basis of the correlation stored in the database.
Inventors:
KAWAKITA ATSUKO (JP)
TANIGUCHI TOMOHIRO (JP)
HARA KAZUTAKA (JP)
TANIGUCHI TOMOHIRO (JP)
HARA KAZUTAKA (JP)
Application Number:
PCT/JP2020/028052
Publication Date:
November 18, 2021
Filing Date:
July 20, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G05D1/02; G01B11/00; G01S5/16; G01S11/12
Foreign References:
| US7329857B1 | 2008-02-12 | |||
| JPS6330914A | 1988-02-09 | |||
| US7541569B1 | 2009-06-02 | |||
| JP2001228019A | 2001-08-24 | |||
| JPH07159121A | 1995-06-23 | |||
| JPH0942914A | 1997-02-14 | |||
| JPS5967413A | 1984-04-17 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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