CN102401700A - Single-end temperature measurement sensor for fiber Bragg grating - Google Patents
Single-end temperature measurement sensor for fiber Bragg grating Download PDFInfo
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- CN102401700A CN102401700A CN2010102790355A CN201010279035A CN102401700A CN 102401700 A CN102401700 A CN 102401700A CN 2010102790355 A CN2010102790355 A CN 2010102790355A CN 201010279035 A CN201010279035 A CN 201010279035A CN 102401700 A CN102401700 A CN 102401700A
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Abstract
The invention discloses a single-end temperature measurement sensor for fiber Bragg grating, which belongs to sensors and comprises fiber Bragg grating, optical fibers in an optical cable in fusion splice with the fiber Bragg grating, and a package shell for packaging the fiber Bragg grating. Fusion splices of the fiber Bragg grating with the optical fibers in the optical cable are coated with fusion splice coatings, the fusion splice coatings are as thick as fiber coatings, the package shell comprises an open container and a cover board connected with the open container, a solidification area and a quick connection area are arranged at an open end of the open container, the cover board is connected with the quick connection area through instant glue and connected with the solidification area through securing glue or thermal conductive glue, a fiber connector is further connected to the other end of each optical fiber of the optical cable, and a silicone sheath tube is arranged outside the optical cable between the fiber connector and the package shell. Therefore, reliability of the fiber Bragg grating sensor is improved, long-distance welding-spot-free transmission of optical signals can be realized, and mounting and demounting of the sensor are also facilitated.
Description
Technical field
The present invention relates to a kind of sensor, particularly in a kind of fiber-optical grating temperature sensor.
Background technology
The sensor technology of optical fiber has the incomparable applicating superiority of other sensing technologies, makes the effect that it is being wanted in great infrastructure, Important Project structure and high-risk engineering safety context of detection are being brought into play more and more.
No matter optical fiber fusion welding technology is in optical-fibre communications, to increase Optical fiber relay to amplify transmission range, improve the fade margin of optical fiber link, Fiber to the home solution, or in optical fiber sensing network, realize the distribution topology detection architecture with system access all bringing into play important effect.The weld protection is then directly determining the serviceable life and the maintenance cost of system.
The welding protective device generally includes heat-shrink tube protection and fixing, hermetically-sealed construction, but heat-shrink tube slides easily, to the poor reliability of weld protection, has become the most frequent in optical fiber communication and sensing network trouble spot and maintenance point.
And the number of sensors of existing fiber-optic grating sensor dilatation on original basis/change individual unit is also inconvenient, and the existing easy limiting sensor of weld is not easy to the application development of fiber-optic grating sensor to the transmission range of coupling mechanism very much.
Summary of the invention
The object of the present invention is to provide a kind of single-ended temperature probe of fiber grating that can improve fused fiber splice point protection performance.
For realizing above-mentioned purpose; The invention provides the single-ended temperature probe of a kind of fiber grating; Comprise fiber grating and with the optical cable of its welding in optical fiber and the package casing that encapsulates said fiber grating, the weld of the fused fiber splice in fiber grating and optical cable is coated with the weld coat.
Particularly, weld coat thickness is identical with optical fiber coating thickness.
Wherein, fiber grating is the optical fiber that is carved with the FBG grid region.
In addition, package casing comprises open containers and connected cover plate, and the open end of open containers is divided into solidification zone territory and quick join domain.
Wherein, cover plate connects the quick join domain of open end of said open containers through Instant cement.
Wherein, cover plate solidifies the zone through the open end that fixing glue or heat-conducting glue connect said open containers.
In addition, optical fiber one end of optical cable and the one end welding of said fiber grating, the optical fiber other end connects the joints of optical fibre.
Wherein, the optical cable between the joints of optical fibre and the package casing is provided with the silica gel protecting pipe outward.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention has removed all the fused fiber splice points on every link of the single-ended temperature probe of original fiber grating, thereby eliminates the hidden danger of fused fiber splice point to link security, has improved the reliability of sensor greatly.
2, arbitrary sensor can dismantled and install to the single-ended temperature probe of fiber grating easily through the joints of optical fibre are set separately, is convenient on original sensor basis dilatation or changes the sensor of individual unit.
3, the present invention uses Instant cement fixed cover plate in the front and back end of the package casing upper surface of fiber-optic grating sensor; Also be to use heat-conducting glue or fixing to bond at the dual-side of package casing upper surface then with glue; Can make full use of the quick-drying of Instant cement; The fixed cover plate prevents that upper cover plate from moving fast, has avoided heat-conducting glue perhaps to fix with glue in the shortcoming of pasting fast; The package casing dual-side uses heat-conducting glue or fixing glue to fix simultaneously, improves the fastness that cover plate is connected with package casing.
Description of drawings
Fig. 1 is the structural representation of the single-ended temperature probe of fiber grating of the present invention;
Fig. 2 is the profile after weld of the present invention applies through coating machine;
Fig. 3 is a profile on the package casing of the present invention.
Description of reference numerals: 1, package casing; 11, cover plate; 12, quick join domain; 13, solidify the zone; 2, optical cable; 2 ', silica gel protecting pipe; 21, weld; 22, weld coat; 3, the joints of optical fibre; 4, fiber grating.
Embodiment
, should be appreciated that following illustrated preferred embodiment only is used for explanation and explains the present invention, and be not used in qualification the present invention a preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing.
The present invention proposes the single-ended temperature probe of a kind of fiber grating; Comprise fiber grating 4 (as shown in Figure 3) and with the optical cable of its welding 2 in optical fiber and the package casing 1 of packaged fiber grating 4; As shown in Figure 1, fiber grating 4 weldings in optical fiber one end in the optical cable 2 and the package casing 1, the other end connects the joints of optical fibre 3; Be provided with the 2 ' protection of silica gel protecting pipe outside the optical cable between the package casing 1 and the joints of optical fibre, prevent that optical cable is impaired.
Fig. 2 has shown the relation of fused fiber splice point of the present invention and coat.
As shown in Figure 2; Optical fiber in the optical cable 2 and the weld of fiber grating 4 21 use coating machine to apply; Weld coat 22 after the coating and optical fiber coating (or protective seam) consistency of thickness in the optical cable 2; That is to say that in fact weld coat 22 is embedded in (not shown) between the optical fiber coating in optical cable coat and the optical cable 2 of fiber grating, makes weld coat 22 not move or to slide; Thereby improve the reliability of fused fiber splice point, realize the no solder joint transmission of the long distance of light signal.
Wherein, Fiber grating 4 is for to be carved with the optical fiber in FBG grid region, and is as shown in Figure 3, and fiber grating 4 is encapsulated in its package casing 1; Package casing 1 is set as the open containers structure of a plate with cover; In the bracing frame of support optical fibers grating 4 is arranged, package casing 1 upper surface is provided with a cover plate 11, the upper surface that package casing 1 is connected with cover plate 11 has and solidifies zone 13 and join domain 12 fast; The open end of its cover plate 11 through fixing glue or heat-conducting glue connection opening container solidify zone 13, cover plate 11 is through the quick join domain 12 of the open end of Instant cement connection opening container.
Because the anaerobic and the quick-drying of Instant cement; Can be fastened on cover plate 11 on the package casing apace; Utilize the coagulability of heat-conducting glue and fixing glue strong simultaneously, that can paste after making cover plate and package casing being connected is very firm, not easy to crack; Thereby make package casing construction when loam cake is installed more convenient, long service life.
In addition, an end welding of fiber grating 4 that is positioned at package casing is as the optical fiber of optical cable 2 of lead-in wire, and as shown in Figure 3, the optical cable 2 outside the package casing 1 is contained in the silica gel protecting pipe 2 ', and wherein the silica gel protecting pipe can play the certain protection effect to optical cable.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (8)
1. single-ended temperature probe of fiber grating; Comprise fiber grating (4) and with the optical cable (2) of its welding in optical fiber and the package casing (1) that encapsulates said fiber grating (4); It is characterized in that the weld (21) of the fused fiber splice in said fiber grating (4) and said optical cable (2) is coated with weld coat (22).
2. the single-ended temperature probe of fiber grating according to claim 1 is characterized in that said weld coat (22) thickness is identical with optical fiber coating thickness.
3. the single-ended temperature probe of fiber grating according to claim 1 is characterized in that, described fiber grating (4) is for being carved with the optical fiber in FBG grid region.
4. the single-ended temperature probe of fiber grating according to claim 1; It is characterized in that; Said package casing (1) comprises open containers and connected cover plate (11), and the open end of said open containers is divided into solidification zone territory (13) and quick join domain (12).
5. the single-ended temperature probe of fiber grating according to claim 4 is characterized in that, said cover plate (11) connects the quick join domain of open end (12) of said open containers through Instant cement.
6. the single-ended temperature probe of fiber grating according to claim 4 is characterized in that, said cover plate (11) solidifies zone (13) through the open end that fixing glue or heat-conducting glue connect said open containers.
7. the single-ended temperature probe of fiber grating according to claim 5 is characterized in that, optical fiber one end of said optical cable (2) and (4) the one end weldings of said fiber grating, and the optical fiber other end connects the joints of optical fibre (3).
8. the single-ended temperature probe of fiber grating according to claim 7 is characterized in that, the outer silica gel protecting pipe (2 ') that is provided with of the optical cable (2) between the said joints of optical fibre (3) and the package casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102790355A CN102401700A (en) | 2010-09-10 | 2010-09-10 | Single-end temperature measurement sensor for fiber Bragg grating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102790355A CN102401700A (en) | 2010-09-10 | 2010-09-10 | Single-end temperature measurement sensor for fiber Bragg grating |
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| CN102401700A true CN102401700A (en) | 2012-04-04 |
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| CN2010102790355A Pending CN102401700A (en) | 2010-09-10 | 2010-09-10 | Single-end temperature measurement sensor for fiber Bragg grating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980684A (en) * | 2012-11-22 | 2013-03-20 | 四川省电力公司宜宾电业局 | Cover plate type fiber bragg grating sensor and packaging method thereof |
| CN103364103A (en) * | 2012-04-09 | 2013-10-23 | 上海华魏光纤传感技术有限公司 | Optical-fiber online temperature measurement probe device |
| CN103852190A (en) * | 2012-12-04 | 2014-06-11 | 中国科学院光电研究院 | Fiber bragg grating sensor for measuring temperature in ArF excimer laser cavity |
| CN105186294A (en) * | 2015-07-27 | 2015-12-23 | 国网山西省电力公司大同供电公司 | Induction equipment used for electric power cabinet |
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| US6442304B1 (en) * | 1998-12-17 | 2002-08-27 | Chevron U.S.A. Inc. | Apparatus and method for protecting devices, especially fibre optic devices, in hostile environments |
| CN201188036Y (en) * | 2008-03-27 | 2009-01-28 | 山东大学 | High-temperature fibre-optical grating temperature sensor |
| DE102008031582A1 (en) * | 2008-07-03 | 2010-01-14 | Siemens Aktiengesellschaft | Temperature sensor has Bragg grating point, and fiber optic cable is arranged in capillary made of electrically insulated material, where capillary is fused quartz glass tube |
| CN201425524Y (en) * | 2009-02-17 | 2010-03-17 | 中国电子科技集团公司第二十三研究所 | Fiber bragg grating type temperature sensor |
| CN101738269A (en) * | 2009-11-13 | 2010-06-16 | 韩红远 | Method for encapsulating optical fiber Bragg grating temperature sensor |
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2010
- 2010-09-10 CN CN2010102790355A patent/CN102401700A/en active Pending
Patent Citations (5)
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| US6442304B1 (en) * | 1998-12-17 | 2002-08-27 | Chevron U.S.A. Inc. | Apparatus and method for protecting devices, especially fibre optic devices, in hostile environments |
| CN201188036Y (en) * | 2008-03-27 | 2009-01-28 | 山东大学 | High-temperature fibre-optical grating temperature sensor |
| DE102008031582A1 (en) * | 2008-07-03 | 2010-01-14 | Siemens Aktiengesellschaft | Temperature sensor has Bragg grating point, and fiber optic cable is arranged in capillary made of electrically insulated material, where capillary is fused quartz glass tube |
| CN201425524Y (en) * | 2009-02-17 | 2010-03-17 | 中国电子科技集团公司第二十三研究所 | Fiber bragg grating type temperature sensor |
| CN101738269A (en) * | 2009-11-13 | 2010-06-16 | 韩红远 | Method for encapsulating optical fiber Bragg grating temperature sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364103A (en) * | 2012-04-09 | 2013-10-23 | 上海华魏光纤传感技术有限公司 | Optical-fiber online temperature measurement probe device |
| CN102980684A (en) * | 2012-11-22 | 2013-03-20 | 四川省电力公司宜宾电业局 | Cover plate type fiber bragg grating sensor and packaging method thereof |
| CN103852190A (en) * | 2012-12-04 | 2014-06-11 | 中国科学院光电研究院 | Fiber bragg grating sensor for measuring temperature in ArF excimer laser cavity |
| CN105186294A (en) * | 2015-07-27 | 2015-12-23 | 国网山西省电力公司大同供电公司 | Induction equipment used for electric power cabinet |
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Application publication date: 20120404 |