CN102213625A - Fiber bragg grating temperature sensor - Google Patents
Fiber bragg grating temperature sensor Download PDFInfo
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- CN102213625A CN102213625A CN2010101411474A CN201010141147A CN102213625A CN 102213625 A CN102213625 A CN 102213625A CN 2010101411474 A CN2010101411474 A CN 2010101411474A CN 201010141147 A CN201010141147 A CN 201010141147A CN 102213625 A CN102213625 A CN 102213625A
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- 239000000835 fiber Substances 0.000 title claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims abstract description 59
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- -1 pottery Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 12
- 238000005538 encapsulation Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000008376 long-term health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention discloses a fiber bragg grating temperature sensor, which comprises a fiber bragg grating and an optical fiber fixed sheet for fixing the fiber bragg grating, wherein the optical fiber fixed sheet is arranged in an encapsulation tube; two optical cable connectors with through holes in the centers of cross sections along the axial direction are connected to both ends of the encapsulation tube; the optical fiber fixed sheet is positioned between the two optical cable connectors; and the fiber bragg grating fixed on the optical fiber fixed sheet passes through the through holes of the two optical cable connectors respectively. In the fiber bragg grating temperature sensor with the encapsulation structure, the encapsulation tube has a certain thickness and strength, so the fiber bragg grating has higher protective strength by the encapsulation of the encapsulation tube; and the response speed of the fiber bragg grating temperature sensor on environmental temperature is improved greatly. Meanwhile, the fiber bragg grating temperature sensor is simple and compact in the encapsulation structure and convenient to implement.
Description
Technical field
The present invention relates to a kind of temperature sensor field, in particular a kind of fiber-optical grating temperature sensor field.
Background technology
At present, temperature sensor is widely used in various engineering structures, as tunnel, bridge, dykes and dams and heavy construction etc., carries out construction monitoring, long-term health monitoring and detection.Traditional temperature sensor have precision low, be subject to shortcomings such as electromagnetic interference (EMI), poor stability, signal transmission distance be short, be difficult in the bad working environment and monitor accurately.And fiber-optical grating temperature sensor is compared with traditional temperature sensor, have highly sensitive, advantages such as volume is little, in light weight, safety anti-explosive, anti-electromagnetic interference capability are strong, long distance of signal transmission, therefore, fiber-optical grating temperature sensor is subjected to the favor of all trades and professions more and more widely.
When fiber-optical grating temperature sensor is especially used in engineering structure, run into two class problems in civil structure, the one, the problem of the intensity of fiber-optical grating temperature sensor own, the 2nd, the problem of time response.High strength must cause big encapsulating housing thickness, thereby influence is to the response speed of environment temperature; For improving response speed, will reduce the thickness of package tube, this makes protection intensity reduce again.In the prior art, the encapsulating structure of fiber-optical grating temperature sensor still can not possess stronger protection intensity and response speed faster simultaneously.Therefore, the present invention is just in order to solve the deficiencies in the prior art, and a kind of both had stronger protection intensity, the fiber-optical grating temperature sensor with very fast response speed are provided.
Summary of the invention
The objective of the invention is to possess the stronger protection intensity and the technical matters of response speed faster simultaneously in order to solve in the prior art fiber-optical grating temperature sensor; and a kind of stronger protection intensity that both had is provided, again can be to the fiber-optical grating temperature sensor of the rapid response of environment temperature.
For solving technical matters recited above, the present invention mainly takes following technical scheme:
A kind of fiber-optical grating temperature sensor, the optical fiber stator, the optical fiber stator that comprise fiber grating, are used for fixing fiber grating are built in package tube, cross-section center and offer the two ends that two optical cable connectors of through hole are connected package tube vertically, the optical fiber stator is fixed in the through hole that fiber grating on the optical fiber stator passes these two optical cable connectors respectively between two optical cable connectors.
As a preferred version of the present invention, be symmetrically arranged with two grooves that are used for fixing the optical fiber stator vertically at the package tube inwall.
Two optical cable connectors are connected by threaded engagement with the two ends of package tube respectively, and package tube closely is connected with the optical cable connector.
As a preferred version of the present invention, the optical fiber stator adopts the optical fiber stator of rectangle or dumb-bell shape.Further, the optical fiber stator is made by metal, glass, pottery, bakelite or compound substance; Further, be provided with oblong aperture, long lumbar hole, circular hole or reticulated cell, be used for the fiber grating at optical fiber stator middle part is placed the cavity of package tube, can make things convenient for heat conduction like this, improve response speed at rectangle optical fiber stator middle part.Further, package tube is made by metal, glass or pottery.
As preferred version, fiber grating is fixed on the optical fiber stator by mode gluing or welding.Further, the fiber grating that is fixed on the optical fiber stator is relaxed state.
Fiber-optical grating temperature sensor provided by the invention on the one hand, because the package tube that adopts metal, glass or stupalith to make has certain thickness and intensity, encapsulates by package tube and has guaranteed that fiber grating is had stronger protection intensity; On the other hand, adopt the encapsulating structure of the technical program, improved the response speed of fiber-optical grating temperature sensor greatly environment temperature.Simultaneously, this fiber-optical grating temperature sensor encapsulating structure is simple, compact, is convenient to implement.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the present invention;
Fig. 2 is the side view cutaway drawing of Fig. 1;
Fig. 3 is a rectangle optical fiber stator structural representation;
Fig. 4 is the structural representation of second kind of embodiment of the present invention;
Fig. 5 is the side view cutaway drawing of Fig. 4;
Fig. 6 is a dumb-bell shape optical fiber stator structural representation.
Embodiment
The present invention will be described in detail below in conjunction with drawings and Examples.
Embodiment 1: see also Fig. 1 to Fig. 3, Fig. 1 is the structural representation of first kind of embodiment of the present invention; Fig. 2 is the side view cutaway drawing of Fig. 1; Fig. 3 is a rectangle optical fiber stator structural representation.As shown in the figure, fiber-optical grating temperature sensor comprises fiber grating 4, is used for fixing the optical fiber stator 2 of fiber grating 4, optical fiber stator 2 is built in two optical cable connectors 11,12 that package tube 3, cross-section center axially be provided with through hole and is connected with the two ends of package tube 3, the through hole in described two optical cable connectors 11,12 is passed at the two ends that will be fixed in the fiber grating 4 on the optical fiber stator 2 respectively, is connected with optical cable 6.
Be symmetrical arranged two grooves 311,312 vertically at package tube 3 inwalls, be used for fixing optical fiber stator 2, optical fiber stator 2 be shaped as rectangle, and its width is exactly the air line distance between the bottom land of described two grooves 311,312, optical fiber stator 2 is inserted in two grooves 311,312 of package tube 3 inwalls, and it is closely fixing that 3 pairs of optical fiber stators of package tube 2 are carried out.
For improving the response sensitivity of fiber-optic grating sensor to all orientation temperature, at optical fiber stator 2 middle parts oblong aperture is set, the fiber grating 4 at optical fiber stator 2 middle parts is placed the cavity of package tube, be convenient to the fiber grating 4 expedite heats of sensing in the cavity.In order further to strengthen the technique effect that produces by optical fiber stator 2; optical fiber stator 2 is made by metal, glass, pottery, bakelite or compound substance; not only make optical fiber stator 2 itself have certain rigidity; and be convenient to fixing and avoid because of running into heat it being softened, promptly guaranteed the protection intensity of 3 pairs of fiber gratings of package tube.
Two optical cable connectors 11,12 are connected by the screw thread that setting cooperatively interacts with the two ends of package tube 3 respectively, by the internal thread of package tube 3, externally threaded the cooperatively interacting of optical cable connector 11,12, package tube 3 closely is connected with optical cable connector 11,12, because optical fiber stator 2 closely is fixed in package tube 3 inside by groove 311,312, so whole package tube 3 inside have reached good fixed effect; As preferred version, package tube 3 is made by the material of metal, glass or pottery, and the package tube 3 that adopts above-mentioned material to make has certain thickness and intensity, to guarantee that fiber grating 4 is had stronger protection intensity.
The specific implementation process of embodiment 1 is as follows: fiber grating 4 is by mode gluing or welding, be fixed on the middle part and have fixed position 5 places on the optical fiber stator 2 of oblong aperture, when if optical fiber stator 2 is metal, fix by mode gluing or welding, if when optical fiber stator 2 is nonmetal, then fix by gluing mode.As shown in Figure 1, in the time of fixedly, the fiber grating 4 that guarantee to be fixed on the optical fiber stator 2 is relaxed state.To be fixed with 311,312 li of two grooves that insertion package tube 3 inwalls of the optical fiber stator 2 of fiber grating 4 are provided with vertically then, closely fixing to realize 3 pairs of optical fiber stators 2 of package tube; To be positioned at the fiber grating 4 that stretches out optical fiber stator 2 both sides again and pass the through hole that optical cable connector 11,12 is provided with respectively, be connected with optical cable 6, to be provided with externally threaded optical cable connector 11,12 then and be screwed into two ends respectively female package tube 3 the insides are set, to guarantee the steadiness of whole encapsulating structure.Because optical fiber stator 2 middle parts have oblong aperture in the present embodiment, after heat enters the encapsulation cavity, can unhinderedly conduct to fiber grating 4, fiber grating 4 temperature sensors respond rapidly, equally, long lumbar hole, circular hole or reticulated cell also can be opened in the middle part of optical fiber stator 2, reach the technique effect same with oblong aperture; Simultaneously, package tube 3 has certain thickness and intensity, has guaranteed that this encapsulating structure has stronger protection intensity to fiber grating 4.
Embodiment 2: see also Fig. 4 to Fig. 6, Fig. 4 is the structural representation of second kind of embodiment of the present invention; Fig. 5 is the side view cutaway drawing of Fig. 4; Fig. 6 is a dumb-bell shape optical fiber stator structural representation.Embodiment 2 is with the difference of embodiment 1: the optical fiber stator 2 that embodiment 2 is adopted is dumb-bell shapes, fiber grating 4 is fixed on two ends fixed position 5 places of optical fiber stator 2 by mode gluing or welding, as shown in Figure 4, again the two ends of optical fiber stator 2 are inserted two grooves 311 of package tube 3,312 li, the middle part of optical fiber stator 2 and fiber grating 4 all places the inside cavity of package tube 3, because optical fiber stator 2 is dumb-bell shapes, the last lower edge of middle part does not contact with package tube 3, be that inside cavity is communicated with, so compare with the rectangle optical fiber stator 2 among the embodiment 1, has same technique effect, can sense heat rapidly because all guaranteed the fiber grating 4 in the cavity, improve the response speed of fiber-optical grating temperature sensor environment temperature.
Be understandable that, although the present invention has made to describe in detail and quoted as proof embodiment, but for the person of ordinary skill of the art, various schemes, modification and the change that can make according to above-mentioned explanation, but these changes all should be included within the claim scope of the present invention.
Claims (10)
1. fiber-optical grating temperature sensor, comprise fiber grating (4), it is characterized in that, comprise that also the optical fiber stator (2), the described optical fiber stator (2) that are used for fixing described fiber grating (4) are built in package tube (3), cross-section center and offer the two ends that two optical cable connectors (11,12) of through hole are connected to package tube (3) vertically, optical fiber stator (2) is positioned between two optical cable connectors (11,12), is fixed in the through hole that fiber grating (4) on the optical fiber stator (2) passes described two optical cable connectors (11,12) respectively.
2. fiber-optical grating temperature sensor according to claim 1 is characterized in that, is symmetrically arranged with two grooves (311,312) that are used for fixing optical fiber stator (2) vertically at described package tube (3) inwall.
3. fiber-optical grating temperature sensor according to claim 1 is characterized in that, two optical cable connectors (11,12) are connected by threaded engagement with the two ends of package tube (3) respectively.
4. fiber-optical grating temperature sensor according to claim 1 is characterized in that, described optical fiber stator (2) is a rectangle.
5. fiber-optical grating temperature sensor according to claim 4 is characterized in that, described optical fiber stator (2) middle part is provided with oblong aperture, long lumbar hole, circular hole or reticulated cell.
6. fiber-optical grating temperature sensor according to claim 1 is characterized in that, described optical fiber stator (2) is a dumb-bell shape.
7. according to the arbitrary described fiber-optical grating temperature sensor of claim 1-6, it is characterized in that described optical fiber stator (2) is made by metal, glass, pottery, bakelite or compound substance.
8. fiber-optical grating temperature sensor according to claim 1 is characterized in that, described package tube (3) is made by metal, glass or pottery.
9. fiber-optical grating temperature sensor according to claim 1 is characterized in that, described fiber grating (4) is fixed on the optical fiber stator (2) by mode gluing or welding.
10. according to claim 1 or 9 described fiber-optical grating temperature sensors, it is characterized in that the fiber grating (4) that is fixed on the optical fiber stator (2) is relaxed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010141147.4A CN102213625B (en) | 2010-04-07 | 2010-04-07 | A kind of fiber-optical grating temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010141147.4A CN102213625B (en) | 2010-04-07 | 2010-04-07 | A kind of fiber-optical grating temperature sensor |
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| CN102213625A true CN102213625A (en) | 2011-10-12 |
| CN102213625B CN102213625B (en) | 2016-04-06 |
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| CN201010141147.4A Expired - Fee Related CN102213625B (en) | 2010-04-07 | 2010-04-07 | A kind of fiber-optical grating temperature sensor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494802A (en) * | 2011-12-20 | 2012-06-13 | 中国科学院半导体研究所 | Optical fiber temperature sensor for rapid marine temperature measurement |
| CN102636288A (en) * | 2012-04-06 | 2012-08-15 | 南昌航空大学 | Triangular encapsulation method of fiber grating sensor |
| CN102706479A (en) * | 2012-06-28 | 2012-10-03 | 上海谱蔚物联网有限公司 | Fiber grating temperature sensor with modularized structure |
| CN102868447A (en) * | 2012-09-24 | 2013-01-09 | 深圳太辰光通信股份有限公司 | Fiber grating tracker and fault detection method of optical fiber circuit |
| CN104089724A (en) * | 2014-07-25 | 2014-10-08 | 绵阳彬华科技有限公司 | Fiber bragg grating temperature sensor |
| CN107356218A (en) * | 2017-07-26 | 2017-11-17 | 国网山东省电力公司临朐县供电公司 | Transmission line icing monitoring system |
| CN108204866A (en) * | 2018-01-04 | 2018-06-26 | 长飞光纤光缆股份有限公司 | A kind of non-calibrating tandem type fiber-optical grating temperature sensor preparation method and product |
| CN113295383A (en) * | 2021-04-29 | 2021-08-24 | 成都新锐鑫光通信技术有限公司 | Bootstrap fiber connector |
| CN113865744A (en) * | 2021-09-26 | 2021-12-31 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Optical fiber temperature sensor for deep space detection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254838A (en) * | 2002-03-04 | 2003-09-10 | Furukawa Electric Co Ltd:The | Optical temperature sensor |
| JP2003344183A (en) * | 2002-05-27 | 2003-12-03 | Ntt Advanced Technology Corp | Fiber grating temperature sensor and temperature measurement system |
| JP2004264114A (en) * | 2003-02-28 | 2004-09-24 | Ntt Advanced Technology Corp | Fbg type temperature sensor and temperature measuring system using the same |
| CN101545817A (en) * | 2009-04-30 | 2009-09-30 | 山东省科学院激光研究所 | Fiber grating osmotic pressure sensor with low measuring range |
| CN201637506U (en) * | 2010-04-07 | 2010-11-17 | 上海启鹏工程材料科技有限公司 | Fiber grating temperature sensor |
-
2010
- 2010-04-07 CN CN201010141147.4A patent/CN102213625B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254838A (en) * | 2002-03-04 | 2003-09-10 | Furukawa Electric Co Ltd:The | Optical temperature sensor |
| JP2003344183A (en) * | 2002-05-27 | 2003-12-03 | Ntt Advanced Technology Corp | Fiber grating temperature sensor and temperature measurement system |
| JP2004264114A (en) * | 2003-02-28 | 2004-09-24 | Ntt Advanced Technology Corp | Fbg type temperature sensor and temperature measuring system using the same |
| CN101545817A (en) * | 2009-04-30 | 2009-09-30 | 山东省科学院激光研究所 | Fiber grating osmotic pressure sensor with low measuring range |
| CN201637506U (en) * | 2010-04-07 | 2010-11-17 | 上海启鹏工程材料科技有限公司 | Fiber grating temperature sensor |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494802B (en) * | 2011-12-20 | 2013-06-05 | 中国科学院半导体研究所 | Optical fiber temperature sensor for rapid marine temperature measurement |
| CN102494802A (en) * | 2011-12-20 | 2012-06-13 | 中国科学院半导体研究所 | Optical fiber temperature sensor for rapid marine temperature measurement |
| CN102636288A (en) * | 2012-04-06 | 2012-08-15 | 南昌航空大学 | Triangular encapsulation method of fiber grating sensor |
| CN102636288B (en) * | 2012-04-06 | 2013-10-02 | 南昌航空大学 | Triangular encapsulation method of fiber grating sensor |
| CN102706479A (en) * | 2012-06-28 | 2012-10-03 | 上海谱蔚物联网有限公司 | Fiber grating temperature sensor with modularized structure |
| CN102706479B (en) * | 2012-06-28 | 2014-10-29 | 上海谱蔚物联网有限公司 | Fiber grating temperature sensor with modularized structure |
| CN102868447B (en) * | 2012-09-24 | 2015-07-15 | 深圳太辰光通信股份有限公司 | Fiber grating tracker and fault detection method of optical fiber circuit |
| CN102868447A (en) * | 2012-09-24 | 2013-01-09 | 深圳太辰光通信股份有限公司 | Fiber grating tracker and fault detection method of optical fiber circuit |
| CN104089724A (en) * | 2014-07-25 | 2014-10-08 | 绵阳彬华科技有限公司 | Fiber bragg grating temperature sensor |
| CN107356218A (en) * | 2017-07-26 | 2017-11-17 | 国网山东省电力公司临朐县供电公司 | Transmission line icing monitoring system |
| CN108204866A (en) * | 2018-01-04 | 2018-06-26 | 长飞光纤光缆股份有限公司 | A kind of non-calibrating tandem type fiber-optical grating temperature sensor preparation method and product |
| CN108204866B (en) * | 2018-01-04 | 2019-11-22 | 长飞光纤光缆股份有限公司 | A kind of non-calibrating tandem type fiber grating temperature sensor preparation method and product |
| CN113295383A (en) * | 2021-04-29 | 2021-08-24 | 成都新锐鑫光通信技术有限公司 | Bootstrap fiber connector |
| CN113865744A (en) * | 2021-09-26 | 2021-12-31 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Optical fiber temperature sensor for deep space detection |
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| CN102213625B (en) | 2016-04-06 |
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