KR20110122443A - 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지 - Google Patents
다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35316—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
- G01J2009/006—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength using pulses for physical measurements
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Abstract
이 필름형 광섬유 브래그 격자 센서 패키지는, 중심에 소정 면적의 삼각형 형상의 홀을 가지며 상기 삼각형 형상의 홀과 동일한 삼각형 형상으로 일정 폭을 갖는 몸체; 상기 몸체의 일정 폭에 배열되는 광섬유 라인; 상기 몸체 상에 소정 간격과 각도를 두고 상기 광섬유 라인 중에 형성되는 2개 또는 3개의 광섬유 브래그 격자 센서를 포함한다.
본 발명에 따르면, 광섬유 브래그 격자 센서를 다수 개로 배열시키면서도 센서간 일정 각도가 안정적으로 유지되며, 구조물의 표면에 부착시키거나 또는 구조물의 내부에 삽입시키는 것이 용이하다.
Description
도 2는 도 1에 따른 광섬유 브래그 격자 센서의 센싱 원리를 나태는 도면.
도 3은 본 발명의 일실시예에 따른 광섬유 브래그 격자 센서 패키지의 구조를 나타내는 도면.
도 4는 본 발명의 다른 일실시예에 따른 광섬유 브래그 격자 센서 패키지의 구조를 나태는 도면.
도 5는 본 발명의 일실시예에 따른 광섬유 브래그 격자 센서 패키지를 구조물에 부착한 적용예.
도 6은 본 발명의 일실시예에 따른 광섬유 브래그 격자 센서 패키지를 복합재 구조물 내부에 설치하는 적용예.
420, 420-1, 420-2: 광섬유 브래그 격자 센서
430, 430-1, 430-2: 배열 표시
600: 구조물
700: 복합재 구조물
Claims (5)
- 중심에 소정 면적의 삼각형 형상의 홀(440)을 가지며 상기 삼각형 형상의 홀(440)과 동일한 삼각형 형상으로 일정 폭을 갖는 몸체(400);
상기 몸체(400)의 일정 폭에 배열되는 광섬유 라인(410);
상기 몸체(400) 상에 소정 간격과 각도를 두고 상기 광섬유 라인(410)중에 형성되는 2개 또는 3개의 광섬유 브래그 격자 센서(420,420-1,420-2)
를 포함하는 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지. - 제 1 항에 있어서,
상기 2개의 광섬유 브래그 격자 센서(420, 420-1)는 상기 몸체(400)의 밑변과 윗변을 따라 배열된 상기 광섬유 라인(410)을 따라 90도 각도로 배열되는 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지. - 제 1 항에 있어서,
상기 3개의 광섬유 브래그 격자 센서(420, 420-1, 420-2)는 상기 몸체(400)를 한 바퀴 돌아 배열된 상기 광섬유 라인(410)을 따라 배열되며 상기 3개의 광섬유 브래그 격자 센서 중 2개의 광섬유 브래그 격자 센서(420, 420-1)는 90도 각도로 배열되고, 1개의 광섬유 브래그 격자 센서(420-2)는 상기 광섬유 브래그 격자 센서(420, 420-1)와 45도 각도로 배열되는 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지. - 제 2 항 또는 제 3 항에 있어서,
상기 몸체(400)는 박막 에폭시 필름 또는 중합체 필름인 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지. - 제 2 항 또는 제 3 항에 있어서,
상기 몸체(400)가 적층되는 복합재 구조물(700) 내부에 삽입되는 경우 접착제 또는 복합재 구조물(700) 내부의 레진 경화에 의해 고정되는 다축 변형률 측정이 가능한 필름형 광섬유 브래그 격자 센서 패키지.
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KR100635265B1 (ko) * | 2004-09-21 | 2006-10-19 | 이금석 | 광섬유격자센서 패키지 |
KR100813613B1 (ko) * | 2006-08-08 | 2008-03-17 | 광주과학기술원 | 광섬유 격자를 제조하는 방법과 장치, 및 이에 따른 광섬유격자가 형성된 광섬유 |
KR20090009068A (ko) * | 2007-07-18 | 2009-01-22 | 이금석 | 광섬유격자센서 감도 감쇄 방법 및 센서케이블 |
KR100941227B1 (ko) * | 2008-01-09 | 2010-02-10 | 주식회사 아이세스 | 광섬유 센서용 고정자 및 이를 이용한 광섬유 센서 부착방법 |
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