CN102878943B - The multiple sensing system of fiber strain integration calibrating installation of large scale and method - Google Patents
The multiple sensing system of fiber strain integration calibrating installation of large scale and method Download PDFInfo
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- CN102878943B CN102878943B CN201210222199.3A CN201210222199A CN102878943B CN 102878943 B CN102878943 B CN 102878943B CN 201210222199 A CN201210222199 A CN 201210222199A CN 102878943 B CN102878943 B CN 102878943B
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- strain
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- optical fiber
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- equi intensity
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- 239000000835 fibers Substances 0.000 title claims abstract description 48
- 238000009434 installation Methods 0.000 title claims abstract description 11
- 239000003365 glass fibers Substances 0.000 claims abstract description 35
- 238000007689 inspection Methods 0.000 claims abstract description 22
- 239000011888 foils Substances 0.000 claims abstract description 13
- 239000000969 carriers Substances 0.000 claims description 4
- 239000006072 pastes Substances 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 2
- 238000000034 methods Methods 0.000 description 3
- 230000003287 optical Effects 0.000 description 3
- 280000695219 Fiber Connection companies 0.000 description 2
- 238000006243 chemical reactions Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of calibrating installation, be specifically related to a kind of large scale multiple sensing system of fiber strain integration calibrating installation.
Background technology
Fibre optic strain sensor is not owing to being subject to electromagnetic effect, can long-term work in the presence of a harsh environment, essential safety, highly sensitive, application in engineering also gets more and more, wherein based on the strain sensing system of BOTDR and BOTDA be present research based on the strain sensing system of fiber grating, use maximum sensing system of fiber strain, in application process, must to BOTDR, BOTDA and fiber Bragg grating (FBG) demodulator carry out strain calibration, current calibration steps is universal testing machine method mainly, it utilizes hydraulic pressure to apply stress, optical fiber is made to produce strain, precision is high, trace to the source easily, but it is expensive, general more than tens0000, and action length is shorter, general all at below 700mm, BOTDR cannot be met, the wide range alignment requirements of the fiber strain sensing checkout equipments such as BOTDA.
Summary of the invention
For above-mentioned technical matters, the invention provides a kind of integrated calibrating installation simultaneously can calibrated multiple fiber strain sensing checkout equipment, action length can reach more than 1200mm, and precision can reach 1 μ ε, compared with universal testing machine, action length is long, precision is high, cost is low.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of large scale multiple sensing system of fiber strain integration calibrating installation, comprise: by inspection BOTDA, by inspection BOTDR, by inspection fiber Bragg grating (FBG) demodulator, statical strain indicator, large scale equi intensity cantilever, optical fiber, with the optical fiber of fiber grating, fiber grating, foil gauge, optical fiber, wherein BOTDA and Fiber connection are as BOTDA strain sensing system, BOTDR and Fiber connection are as BOTDR strain sensing system, fiber Bragg grating (FBG) demodulator forms fiber grating strain sensor system with the optical fiber with fiber grating, statical strain indicator and foil gauge form statical strain indicator strain sensing system.
The present invention utilizes calibrated statical strain indicator strain sensing system as the standard of strain calibration and benchmark, with the carrier of large scale equi intensity cantilever as strain transfer and carrying.
The invention has the beneficial effects as follows: present invention utilizes equi intensity cantilever strain evenly and statical strain indicator precision is high, easy advantage of tracing to the source, adopt equi intensity cantilever as the carrier of strain transfer and carrying, with statical strain indicator as calibration criterion, achieve and BOTDR, BOTDA, fiber grating strain sensor system are calibrated simultaneously, compared with prior art, action length of the present invention long, trace to the source easily, precision is high, cost is low.Specifically have the following advantages:
(1) action length is long, and can reach more than 1200mm, cost is lower;
(2) precision is high, can reach 1 μ ε, traces to the source easily;
(3) can calibrate BOTDR, BOTDA and fiber Bragg grating (FBG) demodulator simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
By inspection BOTDA-0; By inspection BOTDR-1; By inspection fiber Bragg grating (FBG) demodulator-2; Statical strain indicator-3; Semi-girder-4; Optical fiber-5; With the optical fiber-6 of fiber grating; Fiber grating-7; Foil gauge-8; Optical fiber-9.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
A kind of large scale multiple sensing system of fiber strain integration calibrating installation, for calibrating BOTDA, BOTDR, the coefficient of strain of fiber Bragg grating (FBG) demodulator, comprise by inspection BOTDA0, by inspection BOTDR1, by inspection fiber Bragg grating (FBG) demodulator 2, statical strain indicator 3, large scale equi intensity cantilever 4, optical fiber 5, with the optical fiber 6 of fiber grating, fiber grating 7, foil gauge 8, optical fiber 9, wherein be connected with optical fiber 9 as BOTDA strain sensing system by inspection BOTDA0, be connected with optical fiber 5 as BOTDR strain sensing system by inspection BOTDR1, fiber grating strain sensor system is formed with the optical fiber 6 with fiber grating by inspection fiber Bragg grating (FBG) demodulator 2, statical strain indicator 3 and foil gauge 8 form statical strain indicator strain sensing system.
The present invention utilizes calibrated statical strain indicator strain sensing system as the standard of strain calibration and benchmark, with the carrier of large scale equi intensity cantilever 4 as strain transfer and carrying.
The detailed description of the invention is as follows:
As shown in Figure 1, optical fiber 5, optical fiber 9 and the optical fiber 6 with fiber grating are pasted onto on the axis of large scale equi intensity cantilever 4 closely, the near axis that foil gauge 8 is pasted onto large scale equi intensity cantilever 4 is distributed symmetrically, and upper and lower surface stickup quantity is identical, the paste position also one_to_one corresponding of its upper and lower surface.Optical fiber 5, optical fiber 9 and with the optical fiber 6 of fiber grating and foil gauge 8 paste position as shown in Figure 1.In using, foil gauge 8 must closely be pasted onto in pairs large scale equi intensity cantilever 4 vertically on the surface, optical fiber 5, optical fiber 9, to be pasted onto side by side on the axis of large scale equi intensity cantilever 4 with the optical fiber 6 of fiber grating.Optical fiber 5 is subject to inspection BOTDR for access; Optical fiber 9 is subject to inspection BOTDA (also can only enter by inspection BOTDR by one termination) for access; Optical fiber 6 with fiber grating is subject to inspection fiber Bragg grating (FBG) demodulator 2 for access.
In calibration process, calibrating installation is positioned in horizontal table top, apply power straight down at the top of large scale equi intensity cantilever 4, apply evenly equal strain by the flexibility changing large scale equi intensity cantilever 4 to all each strain transducers be fixed on large scale equi intensity cantilever 4.Change the intensity that large scale equi intensity cantilever 4 top is stressed, can change the size that equi intensity cantilever 4 strains, the size of strain is tested by statical strain indicator and is provided.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210222199.3A CN102878943B (en) | 2012-06-27 | 2012-06-27 | The multiple sensing system of fiber strain integration calibrating installation of large scale and method |
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| CN201210222199.3A CN102878943B (en) | 2012-06-27 | 2012-06-27 | The multiple sensing system of fiber strain integration calibrating installation of large scale and method |
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| CN102878943A CN102878943A (en) | 2013-01-16 |
| CN102878943B true CN102878943B (en) | 2016-02-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890643A (en) * | 2016-05-16 | 2016-08-24 | 中国电子科技集团公司第二十三研究所 | Calibration device for optical path difference test instrument and calibration method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335603B (en) * | 2013-06-27 | 2016-03-16 | 中国电子科技集团公司第四十一研究所 | A kind of distributive fiber optic strain factor calibration device and scaling method |
| CN104729418A (en) * | 2013-12-20 | 2015-06-24 | 中国计量学院 | Calibration device and method for fiber grating high temperature strain transducer |
| CN107036543A (en) * | 2015-10-14 | 2017-08-11 | 北京信息科技大学 | A kind of fiber Bragg grating strain sensor demarcation and fatigue detecting system |
| CN105571619B (en) * | 2015-12-17 | 2017-10-10 | 安徽中科智泰光电测控科技有限公司 | A kind of FBG sensor sensitivity improvement methods based on cantilever beam structure |
| CN106017532B (en) * | 2016-05-16 | 2018-03-30 | 中国电子科技集团公司第二十三研究所 | A kind of calibrating installation and calibration method for light phase (FBG) demodulator |
| CN106225704B (en) * | 2016-07-12 | 2018-01-12 | 北京航空航天大学 | A kind of adaptive location choosing method for FBG structure detection |
| CN106802133A (en) * | 2016-11-02 | 2017-06-06 | 北京信息科技大学 | Data processing method, data handling system and strain gauge means |
| CN109470403A (en) * | 2018-12-14 | 2019-03-15 | 北京航空航天大学 | A kind of power based on fiber grating/torque sensor scaling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6614514B2 (en) * | 2001-07-16 | 2003-09-02 | Fujikura Ltd. | Distortion measuring apparatus and distortion measuring method using this apparatus |
| CN1598481A (en) * | 2004-09-15 | 2005-03-23 | 南京大学 | Rating method and instrument for distributing type optical fiber strain sensor |
| CN102313523A (en) * | 2011-08-18 | 2012-01-11 | 中国飞机强度研究所 | Sensitivity calibration method of fiber Bragg grating strain sensor |
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2012
- 2012-06-27 CN CN201210222199.3A patent/CN102878943B/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6614514B2 (en) * | 2001-07-16 | 2003-09-02 | Fujikura Ltd. | Distortion measuring apparatus and distortion measuring method using this apparatus |
| CN1598481A (en) * | 2004-09-15 | 2005-03-23 | 南京大学 | Rating method and instrument for distributing type optical fiber strain sensor |
| CN102313523A (en) * | 2011-08-18 | 2012-01-11 | 中国飞机强度研究所 | Sensitivity calibration method of fiber Bragg grating strain sensor |
Non-Patent Citations (1)
| Title |
|---|
| 基于BOTDR的分布式光纤传感器标定实验研究;索文斌等;《仪器仪表学报》;20060930;第27卷(第9期);985－989页 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890643A (en) * | 2016-05-16 | 2016-08-24 | 中国电子科技集团公司第二十三研究所 | Calibration device for optical path difference test instrument and calibration method |
| CN105890643B (en) * | 2016-05-16 | 2018-03-06 | 中国电子科技集团公司第二十三研究所 | A kind of calibrating installation and calibration method for optical path difference tester |
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| CN102878943A (en) | 2013-01-16 |
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Effective date of registration: 20190307 Address after: 266000 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: China Electronics Technology Instrument and Meter Co., Ltd. Address before: 266000 No. 98 Xiangjiang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: The 41st Institute of CETC |