MEASURING SYSTEM AND MEASURING METHOD

WIPO Patent Application WO/2016/163139

A1

[Problem] To enable acquisition by calculation of pressure and temperature data on the basis of wavelength change data output by a fiber Bragg grating sensor. [Solution] The measuring system is characterized by comprising: a FBG sensor that has a FBG part outputting reflected light of a predetermined wavelength in accordance with the external pressure/external temperature when incident light from a light source is input, and that outputs a reflected light signal on the basis of the reflected light; a wavelength analysis means for collecting the reflected light signal from the FBG sensor, creating a plurality of wavelength value data in accordance with a plurality of the collected reflected light signals, and creating waveform data that are constituted from the plurality of wavelength value data and show changes over time in the wavelength of the reflected light; a temperature value data calculation means for calculating the temperature value data pertaining to a temperature change that occurred outside on the basis of the wavelength value data; and a pressure value data calculation means for calculating the pressure value data pertaining to a pressure change that occurred outside on the basis of the waveform data.

WO/2004/104536	DISTRIBUTED TEMPERATURE SENSING SYSTEM WITH REMOTE REFERENCE COIL
WO2006027369	CALIBRATING AN OPTICAL FMCW BACKSCATTERING MEASUREMENT SYSTEM
WO/2015/153549	DISTRIBUTED THERMAL FLOW METERING

SUGIYAMA SUSUMU (JP)

PCT/JP2016/053083

October 13, 2016

February 02, 2016

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KAIJO KK (JP)

G01K11/32; G01L11/02; G02B6/02

JP2013130467A	2013-07-04
JP2004309219A	2004-11-04
JP2013127479A	2013-06-27

HAGIRI, Masaharu et al. (JP)
Shoji Hakiri (JP)

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