KR200369549Y1 - Package for Fiber Bragg Grating Sensor - Google Patents
Package for Fiber Bragg Grating Sensor Download PDFInfo
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- KR200369549Y1 KR200369549Y1 KR20-2004-0027028U KR20040027028U KR200369549Y1 KR 200369549 Y1 KR200369549 Y1 KR 200369549Y1 KR 20040027028 U KR20040027028 U KR 20040027028U KR 200369549 Y1 KR200369549 Y1 KR 200369549Y1
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- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 230000003321 amplification Effects 0.000 claims abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000835 fiber Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- G01D5/35303—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 a reference fibre, e.g. interferometric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
- G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
-
- 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
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/124—Geodesic lenses or integrated gratings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Transform (AREA)
Abstract
본 고안은 광섬유격자센서(FBG ; Fiber Bragg Grating ) 패키지에 관한 것으로, 더욱 상세하게는 초기 설정값 유지 및 현장 설치 시 취급이 까다로운 광섬유격자센서를 누구나 손쉽게 이동 및 설치할 수 있게 하고, 상기 광섬유격자센서의 몸체에 신호 증폭용 추(W)를 달아 진동 이나 외부의 물리적 변위 등을 높은 감도로 측정하기 위한 고안이며, 설치된 후에도 상기 광섬유격자센서를 안전하게 보호하고 내구성을 증대 할 수 있도록 모듈 화한 것이다.The present invention relates to a fiber bragg grating (FBG) package, and more particularly, to allow anyone to easily move and install a fiber grating sensor that is difficult to handle during maintenance and initial installation, and the fiber grating sensor It is designed to measure vibration or external physical displacement with high sensitivity by attaching a signal amplification weight (W) to the body of the module, and it is modularized to safely protect the optical fiber grating sensor and increase durability even after being installed.
이를 위해 본 고안은, 파장 변위를 측정하기 위한 광섬유격자센서(S)의 초기 설정값의 유지 및 이동과 피측정물에 취부하는 것에 있어서, 중공(H)이 뚫린 추(W)의 중심에 광섬유격자센서가 삽입되고, 추(W)와 센서가 일체거동 할 수 있도록 에폭시등의 고착재(F)로 충진한 후 보호관(1)에 광섬유격자센서와 추가 일체가된 상태로 삽입하여 한쪽 끝단을 고착재(F)로 고정하고, 적당한 인장력을 가한 후 내구성 증대를 위해 질소가스를 충진하고, 젤타입의 오일로 밀봉후 다른 한쪽 끝도 고착재로 고정하는 것을 특징으로 한다.To this end, the present invention, in the maintenance and movement of the initial setting value of the optical fiber lattice sensor (S) for measuring the wavelength displacement and mounting to the object to be measured, the optical fiber in the center of the weight (W) in which the hollow (H) is drilled The lattice sensor is inserted, and the weight (W) and the sensor are filled with fixing material (F) such as epoxy so that the sensor can be integrated together. Fixing with a fixing material (F), after applying a suitable tensile force is filled with nitrogen gas for increased durability, and after sealing with gel-type oil is characterized in that the other end is fixed with a fixing material.
Description
본 고안은 파장변위를 측정하는데 이용되는 광섬유격자센서의 초기 설정값 유지와, 피측정물에 설치하여 진동등의 물리적 변위를 측정하고, 신호원을 증폭하기 위한 광섬유격자센서 패키지에 관한 것으로서, 더욱 상세하게는 보호관(1) 안에 광섬유격자센서(S)와 추(W)가 일체가 되어 외부의 진동이나 물리적 현상을 증폭하여 정밀한 계측이나, 신호원의 증폭을 가능하게 하고 내구성을 증대하기 위한 위한방법에 관한 것이다.The present invention relates to an optical fiber grating sensor package for maintaining the initial set value of the optical fiber grating sensor used to measure the wavelength displacement, and installed in the measurement object to measure physical displacements such as vibration and amplify a signal source. Specifically, the optical fiber grating sensor (S) and the weight (W) is integrated in the protective tube (1) to amplify external vibration or physical phenomena to enable accurate measurement or amplification of a signal source, and to increase durability. It is about a method.
일반적으로 광섬유격자센서는 파이버 브랙 그레이팅（Fiber Bragg Grating; FBG)이라고도 불리며, 광파이버의 코어부의 굴절율을 일정한 주기로 변화시킨 것으로서, 특정 파장(Bragg파장; 브랙 파장이라고 함)의 광 만을 선택적으로 반사한다.In general, a fiber grating sensor is a fiber bragg grating; Also referred to as FBG), the refractive index of the core portion of the optical fiber is changed at regular intervals, and selectively reflects only light having a specific wavelength (Bragg wavelength; referred to as Bragg wavelength).
또한 이러한 광섬유격자센서는 고유한 파장 값을 가지며, 전자기파의 영향을 받지 않는 등 물리적인 특성이 매우 우수하여 기존의 전기식 게이지를 대체해가고 있는 우수한 물리량 측정소자로서, 현재 그 활용범위는 급속도로 증대되고 있는 실정이라 하겠다.In addition, the optical fiber grating sensor has a unique wavelength value and is excellent in physical properties such as being unaffected by electromagnetic waves and thus replacing the existing electric gauge, and its use range is rapidly increasing. It is a situation that is becoming.
대체로 이러한 광섬유격자센서는 단위면적당 인장력이 매우 높은 반면, 지름이 125㎛로 매우 작기 때문에 외부의 충격에 쉽게 파단 될 수 있어 피측정물에 부착 시에는 매우 섬세한 작업이 요구된다.In general, the optical fiber grating sensor has a very high tensile force per unit area, but because the diameter is very small (125 μm), it can be easily broken by external impacts, and thus, delicate work is required when attaching to the object under test.
또한 이를 설치할 때에는 적당한 인장력을 갖도록 팽팽하게 당겨진 상태로 설치되어야만 정확한 값을 측정할 수 있는 데에도 불구하고, 기존에는 마땅한 광섬유격자센서용 패키지가 없는 관계로 현장에서 직접 전문가가 일일이 그 값을 설정해야 하는 시공간상의 어려움이 현존하고 있다.In addition, even though the installation can be carried out in a state of tension, it must be installed to have a proper tensile force, but in order to accurately measure the value, there is no suitable package for the optical fiber grating sensor. Space-time difficulties exist.
이에 따라 상기와 같은 광섬유격자센서의 우수한 측정능력에도 불구하고 설치 및 취급이 까다로워 각 분야의 산업현장에서 널리 사용되지 못하고 있는 것이 현실이다.Accordingly, despite the excellent measurement capability of the optical fiber grating sensor as described above is difficult to install and handle, it is a reality that is not widely used in the industrial field of each field.
한편, 종래에는 이러한 광섬유격자센서를 설치 시 피측정물에 직접 접착제로 부착하여 사용하거나, 각 사용자가 임의의 형태로 고정편을 제작하여 설치하였음에 따라 각종 외부요인; 예를 들어 비, 바람, 곤충이나 동물 등의 외부충격에 광섬유격자센서가 노출되어 있었다.On the other hand, conventionally, such an optical fiber lattice sensor is used to attach directly to the object to be measured when the installation, or various external factors according to each user to make and install a fixed piece in any form; For example, fiber optic lattice sensors were exposed to external shocks such as rain, wind, insects and animals.
이로 인해 상기와 같이 외부요인에 노출된 광섬유격자센서는 잘못된 변형 값이 측정되어질 뿐만 아니라, 공기중에 포함된 수분이, 온도차에 의한 응결로 인하여 광섬유와 물리적반응을 일으켜 물성이 저하되고, 심지어 균열이 진전하여 광섬유가 파단되는 현상이 생기기도 한다. 이와같은 이유로 종래에는 토목구조물의 상시감시와 계측시스템을 유지 보수하는 데에도 많은 어려움이 있었다.As a result, the fiber optic lattice sensor exposed to the external factors as described above is not only measured the wrong deformation value, but also the moisture contained in the air, the physical reaction with the optical fiber due to the condensation due to the temperature difference, the physical properties are degraded, even cracks As it progresses, the optical fiber breaks. For this reason, there have been many difficulties in maintaining the monitoring system and the measurement system of the civil engineering structure.
상기와 같은 문제점을 해소하기 위해 본 고안은 장소에 관계없이 누구라도 광섬유격자센서가 정밀한 값을 가질 수 있도록 설정 및 설치할 수 있을 뿐만 아니라, 한번 설치 시에는 광섬유격자센서가 반영구적으로 피측정물에 고정 및 보호되도록 하는 것을 목적으로 한다.In order to solve the above problems, the present invention not only can be set and installed so that anyone can have a precise value regardless of the location of the optical fiber grating sensor, but once installed, the optical fiber grating sensor is semi-permanently fixed to the measured object. And to be protected.
이와 같은 목적을 달성하기 위한 본 고안은, 파장 변위를 측정하기 위한 광섬유격자센서를 피측정물에 고정하는 것에 있어서, 광섬유격자센서가 내부를 통해 삽입된 상태로 고착재(F)에 의해 상기 광섬유격자센서의 양측이 보호관(1)에 일체로 고정되어짐과 함께 내구성 증대를 위한 보호관(1) 내부에 질소가스를 충진하며; 외부 물리적 변위의 증폭을 위해 추(W)에 중공(H)을 내어 그 안에 광섬유격자센서를 삽입 고착시켜 일체거동하게 하는 추를 구비하고, 외부를 보호관으로 보호하는 것을 특징으로하는 광섬유격자센서 패키지를 제공한다.The present invention for achieving the above object, in fixing the optical fiber grating sensor for measuring the wavelength displacement to the object to be measured, the optical fiber grating sensor is inserted into the optical fiber by the fixing material (F) in the state Both sides of the grating sensor are fixed to the protective tube (1) integrally and fills the nitrogen gas into the protective tube (1) for increasing durability; In order to amplify external physical displacement, a hollow (H) is formed in the weight (W), and an optical fiber lattice sensor is inserted into and fixed therein so as to integrally operate, and an optical fiber lattice sensor package, characterized by protecting the outside with a protective tube. To provide.
도 1은 본 고안 광섬유격자센서 패키지의 일실시예1 is an embodiment of the present invention optical fiber grating sensor package
도 2는 도1의 투시도2 is a perspective view of FIG. 1
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 보호관 2 : 젤타입의 오일1: Protective tube 2: Gel type oil
W : 추 H : 중공W: Weight H: Hollow
S : 광섬유격자센서 F : 고착재S: Fiber Optic Grid Sensor F: Fixture
N : 질소가스N: nitrogen gas
첨부된 도 1은 본 고안 광섬유격자센서 패키지의 일실시예이고, 도 2는 도1의 투시도이다.1 is an embodiment of the present invention optical fiber grating sensor package, Figure 2 is a perspective view of FIG.
이하 상기 도면에 의해 본 고안을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the drawings.
본 고안은 건물이나 교량, 토목구조물 및 기간통신망에 부착되어 변형률, 온도 압력 진동 등의 물리적 현상을 측정하기 위한 광섬유격자센서로서, 광섬유격자 센서(S)가 추(W)의 중공(H)을 통해 삽입된 상태로 고착재(F)에 의해 일체가 되고, 온도 안정성이 뛰어나고 부식성이 없으며, 방청작용을 하는 질소가스가 충진된 보호관(1) 내부에 삽입되어 적당한 인장력이 가하진 상태로 보호관 양 끝단에 고착재로 영구 고정된다.The present invention is an optical fiber grating sensor for measuring physical phenomena such as strain, temperature, pressure, vibration, etc. attached to buildings, bridges, civil structures and backbone communication networks, and the optical fiber grating sensor (S) is a hollow (H) of the weight (W) It is integrated by the fixing material (F) in the inserted state, excellent in temperature stability and non-corrosive, and inserted into the inside of the protective tube (1) filled with nitrogen gas that acts as a rust preventive. It is permanently fixed by fixing material at the end.
또한 상기 보호관 내에는 고착재 외에도 센서의 민감도에 영향을 주지 않는 젤타입의 오일(2)을 충진해 가스의 누출을 막고 작업의 용의성을 제공하는 것이 바람직하다.In addition, the protective tube is preferably filled with a gel-type oil (2) that does not affect the sensitivity of the sensor in addition to the fixing material to prevent the leakage of gas and provide ease of operation.
이상에서 상술한 바와 같이 본 고안은, 기존 광섬유격자센서를 설치시 광섬유격자센서 패키지를 사용함으로써 비전문가일 경우에도 상기 광섬유격자센서 패키지를 용이하게 설치할 수 있으며, 증폭부가 광섬유자체내에 위치하므로 구조가 간단해지며, 질소가스가 충진되어 있어 온도차에 의한 수분생성을 원천적으로 차단해광섬유와 수분과의 화학반응에 의한 열화를 방지 및 균열의 성장을 억제해 내구성 증대로 인한 반영구적인 사용이 가능할 뿐만 아니라, 광섬유격자센서에 추를 일체화 시켜 측정감도가 높기 때문에 위치 파악이나 통신케이블 등의 식별 신호원으로 사용할 경우 부속물에 피로를 덜 발생할 수 있어 구성품의 내구성을 증대시키는 효과를 가질 수 있다.As described above, the present invention can easily install the fiber optic lattice sensor package even when the non-expert is installed by using the fiber optic lattice sensor package when the existing optical fiber lattice sensor is installed. As it is filled with nitrogen gas, it prevents deterioration due to chemical reaction between optical fiber and water and prevents the growth of cracks by blocking moisture generation due to temperature difference, and it is possible to use semi-permanently by increasing durability. Since the measurement sensitivity is high by integrating the weight in the optical fiber grating sensor, when used as an identification signal source such as positioning or communication cable, it can have less fatigue on the accessories and thus increase the durability of the component.
Claims (3)
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| KR20-2004-0027028U KR200369549Y1 (en) | 2004-09-21 | 2004-09-21 | Package for Fiber Bragg Grating Sensor |
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| KR20-2004-0027028U KR200369549Y1 (en) | 2004-09-21 | 2004-09-21 | Package for Fiber Bragg Grating Sensor |
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