DISTRIBUTED STRAIN SENSING SYSTEM AND METHOD THEREOF

A method for providing strain measurement values in a sensing optical fiber is disclosed. The disclosed method may comprise: a step of outputting light through an optical fiber, wherein the optical fiber includes a reference sensing optical fiber and a sensing optical fiber extending from the refere...

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Bibliographische Detailangaben
Hauptverfasser:	BYEON JONG HYUN, YONG JAE CHUL, LEE BONG WAN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	A method for providing strain measurement values in a sensing optical fiber is disclosed. The disclosed method may comprise: a step of outputting light through an optical fiber, wherein the optical fiber includes a reference sensing optical fiber and a sensing optical fiber extending from the reference sensing optical fiber, and the reference sensing optical fiber is accommodated inside an external environmental protection case; a step of providing strain measurement values in the sensing optical fiber based on Rayleigh scattered light reflected back at points in the optical fiber; and a step of providing a final strain measurement value by correcting errors in the strain measurement value from the sensing optical fiber due to changes in a light source. Thus, the present invention can provide the distributed strain sensing system and method capable of correcting errors according to changes in the light source. 감지 광섬유에서의 변형률 측정값을 제공하는 방법이 개시된다. 개시된 방법은, 광섬유로 광을 출력하는 단계 - 상기 광섬유는 기준 감지 광섬유 및 상기 기준 감지 광섬유로부터 연장되는 감지 광섬유를 포함하며, 상기 기준 감지 광섬유는 외부 환경 보호 케이스의 내부에 수용됨 -, 상기 광섬유의 지점들에서 후방으로 반사되는 레일리 산란광에 기초하여 상기 감지 광섬유에서의 변형률 측정값을 제공하는 단계, 및 상기 감지 광섬유에서의 변형률 측정값에서 광원 변화에 따른 오차를 보정하여 최종 변형률 측정값을 제공하는 단계를 포함할 수 있다.