CN2651704Y - Fibre-optic raster strain sensor - Google Patents
Fibre-optic raster strain sensor Download PDFInfo
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- CN2651704Y CN2651704Y CN 200320103892 CN200320103892U CN2651704Y CN 2651704 Y CN2651704 Y CN 2651704Y CN 200320103892 CN200320103892 CN 200320103892 CN 200320103892 U CN200320103892 U CN 200320103892U CN 2651704 Y CN2651704 Y CN 2651704Y
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- shaped base
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- fiber grating
- strain sensor
- grating
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- 239000000835 fiber Substances 0.000 claims abstract description 51
- 239000013307 optical fiber Substances 0.000 claims abstract description 14
- 229920000297 Rayon Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 241000276425 Xiphophorus maculatus Species 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000382 optic material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides an optical fiber grating strain gage, which is characterized in that: the utility model comprises a H-shape base with platy structure; a long slot is arranged longitudinally on the H-shape base; an optical fiber grating is positioned in the long slot on the H-shape base; a tail fiber of the optical fiber grating is led out from the two ends of the optical fiber grating; a cover layer of strip platy shape covers and is positioned at the middle section of the H-shape base.
Description
Technical field
The utility model belongs to the fiber grating sensing technology field, is specifically related to a kind of fiber Bragg grating strain sensor, is suitable for the high-acruracy survey of various strains or stress.
Technical background
Fiber grating sensing technology is to be accompanied by fiber grating manufacturing technology and fiber grating development of Communication Technique and a kind of brand-new sensing technology that emerges.Compare with the ordinary optic fibre sensor, its transducing signal directly is modulated to optical wavelength, is not subjected to intensity of light source fluctuating, junction loss and bending loss of optical fiber etc. to influence good stability, measuring accuracy height; Be convenient to utilize connect a plurality of fiber gratings of wavelength-division multiplex technique to form the distributed sensing networks simultaneously, so fiber grating sensing technology have wide application prospect.
Fiber grating is a photosensitivity of utilizing fiber optic materials, forms the space phase grating in fiber core.When multi-wavelength signals goes into to inject optical fiber, satisfy certain wavelength signals (being called the Bragg wavelength) of optical grating reflection condition, can be coupled into backward wave and along former fibre circuit reverse transfer.
The ultimate principle of optical fiber grating sensing is: the variation of physical quantitys such as temperature, strain and stress can cause the pitch of fiber grating and the variation of effective refractive index, thereby the Bragg wavelength of fiber grating reflection is drifted about, just can obtain the information of corresponding temperature, strain and stress by detection fiber grating Bragg wavelength change.Wherein to influence the Bragg wavelength of fiber grating be because the elasto-optical effect of the flexible and fiber optic materials in grating cycle causes for stress or strain.Theoretical research shows, only is subjected to the fiber grating of axial stress effect, the drift of its Bragg wavelength with strained pass be Δ λ
B=(1-P
e) ε λ
B, P wherein
eBe effective elasto-optical coefficient of fiber grating, ε is suffered axial strain, λ
B, Δ λ
BBe respectively the Bragg wavelength of fiber grating and the drift value of Bragg wavelength.
The utility model content
The purpose of this utility model is to provide a kind of fiber Bragg grating strain sensor, the high advantage of degree of stability when it has simple in structure, easy to make and measurement.
A kind of fiber Bragg grating strain sensor of the utility model is characterized in that, comprising:
One I-shaped base, this I-shaped base is a schistose texture, vertically has an elongated slot on this I-shaped base;
One fiber grating; This fiber grating places the elongated slot on the I-shaped base 1, and the tail optical fiber of this fiber grating is drawn from the two ends of fiber grating;
One overlayer, this overlayer are a strip-shaped blade shape, and this overlayer covers and be fixed on the centre of I-shaped base.
Wherein the centre at these I-shaped base two ends has a rectangle gap.
Wherein the thickness of this I-shaped base interlude is less than the thickness at two ends.
Wherein the both sides at these I-shaped base two ends have circular hole.
Wherein be marked with viscose glue in the elongated slot on this I-shaped base, to fix this fiber grating.
Description of drawings
For further specifying technology contents of the present utility model, below in conjunction with drawings and Examples the utility model is explained in detail, wherein:
Fig. 1 is the vertical view of first embodiment of the present utility model;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the vertical view of the utility model use on a holder;
Fig. 4 is the sectional view of Fig. 3.
Embodiment
Fig. 1 is front view and the vertical view of first embodiment of the present utility model, and Fig. 2 is the sectional view of Fig. 1; Wherein:
1 is that I-shaped base, 11 is that elongated slot, 12 is that circular hole, 13 is the rectangle gap;
2 is that fiber grating, 21 is a tail optical fiber;
3 cover overlayer.
See also accompanying drawing 1 and Fig. 2, a kind of fiber Bragg grating strain sensor of the utility model is characterized in that, comprising:
One I-shaped base 1, this I-shaped base 1 is a schistose texture, vertically has an elongated slot 11 on this I-shaped base 1; Centre at I-shaped base 1 two ends has a rectangle gap 13; Both sides at I-shaped base 1 two ends have circular hole 12, and this circular hole is for the fixing usefulness of screw; The thickness of this I-shaped base 1 interlude is less than the thickness at two ends;
One fiber grating 2; This fiber grating 2 places the elongated slot 11 on the I-shaped base 1, and the tail optical fiber 21 of this fiber grating 2 is drawn from the two ends of fiber grating 2;
One overlayer 3, this overlayer 3 is a strip-shaped blade shape, and this overlayer 3 covers and is fixed on the centre of I-shaped base 1, and this overlayer 3 is material such as aluminium foil, Copper Foil, can fiber grating 2 be shielded;
Be marked with the viscose glue (not shown) in the elongated slot 11 on I-shaped base 1, to fix this fiber grating 2.
Measured surface produces strain, and the fiber grating that drives in the sensor is subjected to identical strain, thereby changes the Bragg wavelength of fiber grating, by measuring its wavelength variations, can obtain strain value.
Fig. 3 is the vertical view of the utility model use on a fixed support; Fig. 4 is the sectional view of Fig. 3.Wherein:
10 fixed supports, 20 are that the projection, 30 at fixed support two ends connects screw.
See also Fig. 3 and Fig. 4, fiber Bragg grating strain sensor of the present utility model as shown in Figures 1 and 2 be fixed on fixed support 10 above, because of there is a projection 20 both sides of fixed support 10, on this projection 20, have relatively and connect screw 30, this connection screw 30 is in order to connect external optical fiber cable, so after fiber Bragg grating strain sensor is fixed on the fixed support 10, can the signal of fiber grating 2 be drawn by tail optical fiber 21 by external optical fiber cable.
Though described the present invention in detail with reference to the foregoing description, should be appreciated that the present invention is not limited to the disclosed embodiments, for the technician of this professional domain, can carry out various changes to its form and details.This invention is intended to contain the interior various modification of spirit and scope of appended claims.
Claims (5)
1, a kind of fiber Bragg grating strain sensor is characterized in that, comprising:
One I-shaped base, this I-shaped base is a schistose texture, vertically has an elongated slot on this I-shaped base;
One fiber grating; This fiber grating places the elongated slot on the I-shaped base 1, and the tail optical fiber of this fiber grating is drawn from the two ends of fiber grating;
One overlayer, this overlayer are a strip-shaped blade shape, and this overlayer covers and be fixed on the centre of I-shaped base.
2, fiber Bragg grating strain sensor according to claim 1 is characterized in that, wherein the centre at these I-shaped base two ends has a rectangle gap.
3, fiber Bragg grating strain sensor according to claim 1 is characterized in that, wherein the thickness of this I-shaped base interlude is less than the thickness at two ends.
4, fiber Bragg grating strain sensor according to claim 1 is characterized in that, wherein the both sides at these I-shaped base two ends have circular hole.
5, fiber Bragg grating strain sensor according to claim 1 is characterized in that, wherein is marked with viscose glue in the elongated slot on this I-shaped base, to fix this fiber grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103892 CN2651704Y (en) | 2003-11-04 | 2003-11-04 | Fibre-optic raster strain sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103892 CN2651704Y (en) | 2003-11-04 | 2003-11-04 | Fibre-optic raster strain sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651704Y true CN2651704Y (en) | 2004-10-27 |
Family
ID=34340701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320103892 Expired - Fee Related CN2651704Y (en) | 2003-11-04 | 2003-11-04 | Fibre-optic raster strain sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN2651704Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006017974A1 (en) * | 2004-08-16 | 2006-02-23 | Beijing Jiarun Fiber Sensing Technology Inc | Fiber greating or fiber strain sensor head and strain measurement system thereof |
| CN100449261C (en) * | 2007-05-31 | 2009-01-07 | 上海交通大学 | Replaceable embedding type optical fiber strain sensor |
| CN100494910C (en) * | 2007-11-14 | 2009-06-03 | 山东大学 | Surface mounting or welding type stress-strain test sensing unit |
| CN102183210A (en) * | 2011-03-25 | 2011-09-14 | 石家庄经济学院 | Expansible fiber grating strain sensor |
| CN102346078A (en) * | 2011-06-15 | 2012-02-08 | 苏州南智传感科技有限公司 | Metal baseband-shaped distributed optical fiber sensor |
| CN102410817A (en) * | 2010-09-20 | 2012-04-11 | 孙斌 | Temperature self-compensating type fiber grating strain transducer |
| CN103673914A (en) * | 2013-12-13 | 2014-03-26 | 北京航天时代光电科技有限公司 | Optical fiber grating strain sensor and installation method thereof |
| CN104019759A (en) * | 2014-06-17 | 2014-09-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Ultrahigh strain sensor based on fiber bragg grating |
| CN105683705A (en) * | 2013-10-01 | 2016-06-15 | 韩国标准科学研究院 | FBG sensor for measuring maximum strain, manufacturing method and using method |
| CN106441387A (en) * | 2015-10-14 | 2017-02-22 | 北京信息科技大学 | High-sensitivity fiber grating sensor with sensitizing effect |
| CN107246931A (en) * | 2017-07-11 | 2017-10-13 | 中国矿业大学 | A kind of lateral stressed strain transducer of fiber grating and detection method |
| CN109997012A (en) * | 2016-11-30 | 2019-07-09 | 霍廷格·鲍德温测量技术有限责任公司 | The FBG strain transducer device that can be welded |
-
2003
- 2003-11-04 CN CN 200320103892 patent/CN2651704Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006017974A1 (en) * | 2004-08-16 | 2006-02-23 | Beijing Jiarun Fiber Sensing Technology Inc | Fiber greating or fiber strain sensor head and strain measurement system thereof |
| CN100449261C (en) * | 2007-05-31 | 2009-01-07 | 上海交通大学 | Replaceable embedding type optical fiber strain sensor |
| CN100494910C (en) * | 2007-11-14 | 2009-06-03 | 山东大学 | Surface mounting or welding type stress-strain test sensing unit |
| CN102410817A (en) * | 2010-09-20 | 2012-04-11 | 孙斌 | Temperature self-compensating type fiber grating strain transducer |
| CN102183210B (en) * | 2011-03-25 | 2013-07-17 | 石家庄经济学院 | Expansible fiber grating strain sensor |
| CN102183210A (en) * | 2011-03-25 | 2011-09-14 | 石家庄经济学院 | Expansible fiber grating strain sensor |
| CN102346078A (en) * | 2011-06-15 | 2012-02-08 | 苏州南智传感科技有限公司 | Metal baseband-shaped distributed optical fiber sensor |
| CN105683705A (en) * | 2013-10-01 | 2016-06-15 | 韩国标准科学研究院 | FBG sensor for measuring maximum strain, manufacturing method and using method |
| CN105683705B (en) * | 2013-10-01 | 2019-04-16 | 韩国标准科学研究院 | For measuring FBG sensor, manufacturing method and the application method of maximum strain |
| CN103673914A (en) * | 2013-12-13 | 2014-03-26 | 北京航天时代光电科技有限公司 | Optical fiber grating strain sensor and installation method thereof |
| CN104019759A (en) * | 2014-06-17 | 2014-09-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Ultrahigh strain sensor based on fiber bragg grating |
| CN106441387A (en) * | 2015-10-14 | 2017-02-22 | 北京信息科技大学 | High-sensitivity fiber grating sensor with sensitizing effect |
| CN106441387B (en) * | 2015-10-14 | 2018-10-30 | 北京信息科技大学 | A kind of high-sensitivity optical fiber grating sensor with enhancement effect |
| CN109997012A (en) * | 2016-11-30 | 2019-07-09 | 霍廷格·鲍德温测量技术有限责任公司 | The FBG strain transducer device that can be welded |
| CN107246931A (en) * | 2017-07-11 | 2017-10-13 | 中国矿业大学 | A kind of lateral stressed strain transducer of fiber grating and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING COMMODITIES PROUD OF PHOTOELECTRIC TECHNO Free format text: FORMER OWNER: LIU YULIANG Effective date: 20050617 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050617 Address after: 100083 Beijing City, Haidian District Zhongguancun Road No. 18 smartfortune International Building A1202 Patentee after: Beijing Jing'ao Optronics Sci. & Tech. Co., Ltd. Address before: 100083 No. 35, Qinghua East Road, Beijing, Haidian District Patentee before: Liu Yuliang |
|
| C56 | Change in the name or address of the patentee |
Owner name: A1205, CAIZHIGUOJI BUILDING, NO. 18, ROAD EAST, ZH Free format text: FORMER NAME OR ADDRESS: A1202, CAIZHIGUOJI BUILDING, NO. 18, ROAD EAST, ZHONGGUAN VILLAGE, HAIDIAN DISTRICT, BEIJING CITY |
|
| CP03 | Change of name, title or address |
Patentee address after: Beijing City, Haidian District Zhongguancun Road No. 18 smartfortune International Building A1205 Patentee address before: Beijing City, Haidian District Zhongguancun Road No. 18 smartfortune International Building A1202 |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shen Guanzhou Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |