Search International and National Patent Collections

1. (WO2013111698) OPTICAL FIBER FOR TEMPERATURE SENSOR AND POWER DEVICE MONITORING SYSTEM

Pub. No.:    WO/2013/111698    International Application No.:    PCT/JP2013/051069
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Tue Jan 22 00:59:59 CET 2013
IPC: G01K 11/32
G02B 6/00
G02B 6/02
Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
株式会社豊田自動織機
NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
国立大学法人香川大学
INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPAN
独立行政法人国立高等専門学校機構
IMAOKA, Ko
今岡 功
SUZAKI, Yoshifumi
須崎 嘉文
NAKAGAWA, Kaori
中川 香保里
NAKAGAWA, Hikaru
中川 光
NAKAGAWA, Nao
中川 直
IWATA, Hiromu
岩田 弘
Inventors: IMAOKA, Ko
今岡 功
SUZAKI, Yoshifumi
須崎 嘉文
IWATA, Hiromu
岩田 弘
NAKAGAWA, Kiyoshi
中川 清
Title: OPTICAL FIBER FOR TEMPERATURE SENSOR AND POWER DEVICE MONITORING SYSTEM
Abstract:
Provided are: an optical fiber that is for a temperature sensor and that can measure temperature at a plurality of measurement positions while having a simple configuration; and a power device monitoring system. The optical fiber (10) for a sensor is provided with a temperature assurance FBG (20) and a temperature measurement FBG (30) as FBGs having a core refractive index that changes cyclically. The wavelength band of light entering the optical fiber (10) for a sensor includes the Bragg wavelength of the temperature assurance FBG (20) and the temperature measurement FBG (30). The power device monitoring system (1) measures the temperature of the temperature assurance FBG (20) and the temperature measurement FBG (30) on the basis of the Bragg wavelength of each.