CN201628591U - Optical fiber grating temperature sensor - Google Patents
Optical fiber grating temperature sensor Download PDFInfo
- Publication number
- CN201628591U CN201628591U CN2009202354804U CN200920235480U CN201628591U CN 201628591 U CN201628591 U CN 201628591U CN 2009202354804 U CN2009202354804 U CN 2009202354804U CN 200920235480 U CN200920235480 U CN 200920235480U CN 201628591 U CN201628591 U CN 201628591U
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- Prior art keywords
- optical fiber
- fiber
- temperature sensor
- optical
- fiber grating
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000011368 organic material Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 3
- 229910000926 A-3 tool steel Inorganic materials 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000008921 facial expression Effects 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to an optical fiber grating temperature sensor, which comprises a base and a protective casing. A boss with a longitudinal groove is respectively arranged at two ends of the base; the grooves of the two bosses are positioned on the same straight line; an optical fiber grating is arranged between the two bosses; an input optical fiber and an output optical fiber are respectively positioned inside the grooves of the bosses at two ends of the base and fixed through organic materials; the base fixed with the optical fiber is placed into the protective casing; two ends of the optical fiber respectively extend out of holes at two ends of the protective casing; and the optical fibers and the two ends of the protective casing are sealed through a sealing mechanism. The optical fiber grating temperature sensor encapsulates the optical fiber gratings in a two-section tension bonding mode through the base, and protects the outer portions of the optical fiber grating by the casing, thereby improving sensitivity coefficient of the optical fiber grating sensor, and avoiding indication of the gratings caused by influence of glue by a full-glue encapsulating mode of capillary steel pipes. The optical fiber grating temperature sensor has fine steadiness, is suitable for long-term monitoring in a safety monitoring field, has simple structure and easy assembly, and improves production efficiency.
Description
Technical field
The utility model relates generally to a kind of fiber-optical grating temperature sensor that uses in fields such as municipal administration, traffic engineering, Hydraulic and Hydro-Power Engineering or petrochemical industry, is particularly useful for the temperature monitoring under the rugged surroundings such as strong electromagnetic.
Background technology
The principle of work of fiber-optical grating temperature sensor is the variation that temperature variation causes fiber grating Prague centre wavelength, draws extraneous temperature amount by measuring wavelength.At present, the packaged type of fiber-optical grating temperature sensor mainly contains two kinds both at home and abroad: a kind of lax encapsulation, and the thermometric fiber grating is in free state, only depends on self response monitor temperature to temperature variation, and its sensitivity is lower; A kind of by the full glue encapsulation of kapillary, the sensitivity that can significantly improve sensor by thermal expansivity greater than the induced effect of the encapsulating material of optical fiber.But, because in the curable adhesive layer process, the fiber grating grid region is subjected to the non-homogeneous stress influence, causing the distortion of grating waveform easily, yield rate is not high; Simultaneously, because under the unstable factor affecting such as glue-line internal stress, such sensor is easy to generate drift, less stable in the long-term safety monitoring; Moreover kapillary is thinner, and it is difficult to get rid of bubble in the encapsulating encapsulation process, the assembly technology complexity.
Summary of the invention
The purpose of this utility model is: at the shortcoming of above fiber-optical grating temperature sensor, provide a kind of simple in structure, convenient production, the fiber-optical grating temperature sensor of stable performance.
In order to reach the above object: the utility model provides a kind of fiber-optical grating temperature sensor; it has an optical fiber that is shaped on grating; the both sides of grating are respectively input optical fibre and output optical fibre; it is characterized in that also having a pedestal; and protection housing; described pedestal two ends respectively have the boss of a band longitudinal fluting; the groove of two boss is located along the same line; described fiber grating places between two boss; described input optical fibre and output optical fibre lay respectively in the groove of pedestal two ends boss; and fix by organic adhesive backers; the pedestal that is fixed with optical fiber places in the protection housing; the hole at protection housing two ends is stretched out at the optical fiber two ends respectively, seals by sealing mechanism between described optical fiber and the protection housing two ends.
The utility model benefit is as follows: 1, the grid region does not have glue-line, can not be subjected to the non-homogeneous stress influence in the solidification process, has solved the situation of fiber grating encapsulation process medium wave deformation shape, has improved yield rate; 2, fiber grating is not influenced by the labile factor of glue, and sensor stability is good, is suitable for the long term monitoring in safety monitoring field; 3, simple in structure, assembling has improved production efficiency easily, has reduced cost; 4, have the excellent waterproof humidity resistance, have safeguard structure preferably, be applicable to the use under the rugged surroundings.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model fiber-optical grating temperature sensor structural representation.
Embodiment
The fiber-optical grating temperature sensor of present embodiment as shown in Figure 1; it has a pedestal 1 and protection housing 2; the protection housing can be other shape of cylindrical or actual needs; its length is greater than pedestal length; as a whole of pedestal; adopt different thermal expansion coefficient material (to comprise: metal according to the sensibility in practice needs; alloy; organic material) processes; the less demanding moment of sensitivity is adopted the indium steel; when having relatively high expectations, sensitivity can adopt the A3 steel; stainless steel; aluminium or organic material etc.; pedestal 1 two ends respectively have a band longitudinal fluting 13; 14 boss 11; 12; the groove of two boss is located along the same line; the grating region 31 of optical fiber 3 places two boss 11; between 12; input optical fibre 32 and output optical fibre 33 lay respectively at the groove 13 of pedestal 1 two ends boss; in 14; and apply certain pre-tensioning according to designing requirement; guarantee that fiber grating still keeps tensioning state when measuring its minimum temperature; in groove, fill with bonding optical fiber of organic material and pedestal and curing; groove has certain-length to guarantee enough bonding strengths; the pedestal 1 that is fixed with optical fiber 3 places in the protection housing 2; the protection housing should have certain intensity; can under complicated harsh conditions, protect inner structure injury-free; the hole at protection housing two ends is stretched out at the optical fiber two ends respectively, seals by sealing mechanism between described optical fiber and the protection housing two ends.
As shown in Figure 1, the sealing mechanism of present embodiment has and protects the plug 4 that seals between the stomidium of housing, leaves the aperture 41 that the facial expression fibre passes, and by epoxy resin 5 sealings, makes this sensor have the excellent waterproof humidity resistance between described aperture and the optical fiber.
This fiber-optic grating sensor adopts two sections bonding mode packaged fiber gratings of tensioning to protect with housing the outside then by a pedestal, has not only improved the sensitivity coefficient of fiber-optic grating sensor but also avoided the defective that influence caused that adopts the full glue packaged type of capillary tubing grating to be subjected to glue.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation form, all drop on the protection domain of the utility model requirement.
Claims (3)
1. fiber-optical grating temperature sensor; it has an optical fiber that is shaped on grating; the both sides of grating are respectively input optical fibre and output optical fibre; it is characterized in that also having a pedestal; and protection housing; described pedestal two ends respectively have the boss of a band longitudinal fluting; the groove of two boss is located along the same line; described fiber grating places between two boss; described input optical fibre and output optical fibre lay respectively in the groove of pedestal two ends boss; and fix by organic adhesive backers; the pedestal that is fixed with optical fiber places in the protection housing; the hole at protection housing two ends is stretched out at the optical fiber two ends respectively, seals by sealing mechanism between described optical fiber and the protection housing two ends.
2. fiber-optical grating temperature sensor according to claim 1 is characterized in that described sealing mechanism has and protects the plug that seals between the stomidium of housing, describedly leaves the aperture that the facial expression fibre passes, and passes through epoxy sealing between described aperture and the optical fiber.
3. fiber-optical grating temperature sensor according to claim 1 is characterized in that as a whole of described pedestal, and its material is a kind of in indium steel, A3 steel, stainless steel, aluminium or the organic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202354804U CN201628591U (en) | 2009-10-10 | 2009-10-10 | Optical fiber grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202354804U CN201628591U (en) | 2009-10-10 | 2009-10-10 | Optical fiber grating temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201628591U true CN201628591U (en) | 2010-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202354804U Expired - Lifetime CN201628591U (en) | 2009-10-10 | 2009-10-10 | Optical fiber grating temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201628591U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102706825A (en) * | 2012-06-26 | 2012-10-03 | 东北大学秦皇岛分校 | Method and system for measuring concentration of chemical solution by fiber bragg gratings (FBG) |
| CN104089725A (en) * | 2014-07-25 | 2014-10-08 | 绵阳彬华科技有限公司 | Temperature sensor stable in structure |
| CN104129041A (en) * | 2014-08-07 | 2014-11-05 | 中国工程物理研究院总体工程研究所 | Packaging mould for photonic crystal fiber sensing unit |
| CN105222921A (en) * | 2015-10-17 | 2016-01-06 | 山东省科学院海洋仪器仪表研究所 | Adamas sleeve pipe encapsulation can resistant to sea water corrode fibre optic temperature sensor |
| CN105606296A (en) * | 2015-12-30 | 2016-05-25 | 南京南瑞集团公司 | Fiber type osmotic pressure sensor with fine-tuning device and automatic temperature compensation |
| CN106932118A (en) * | 2016-11-02 | 2017-07-07 | 北京信息科技大学 | Suitable for the fiber-optic grating sensor of the encapsulation gas under vacuum environment |
| CN106969853A (en) * | 2016-11-02 | 2017-07-21 | 北京信息科技大学 | Suitable for the tubulose fiber-optic grating sensor design method under vacuum environment |
| CN107014521A (en) * | 2017-05-22 | 2017-08-04 | 中国民航大学 | Deicing spray decision system based on airfield pavement multi-point temperature measurement technology |
| CN108132105A (en) * | 2017-12-25 | 2018-06-08 | 北京信息科技大学 | Strain insensitive metallization packaged temperature sensor |
| CN109612602A (en) * | 2018-12-29 | 2019-04-12 | 北京信息科技大学 | A kind of novel fiber grating temperature sensor and packaging method |
| CN112880714A (en) * | 2021-02-01 | 2021-06-01 | 苏州工业园区华扬智能控制系统有限公司 | Fiber grating temperature and humidity sensor and temperature and humidity measuring system |
-
2009
- 2009-10-10 CN CN2009202354804U patent/CN201628591U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706825A (en) * | 2012-06-26 | 2012-10-03 | 东北大学秦皇岛分校 | Method and system for measuring concentration of chemical solution by fiber bragg gratings (FBG) |
| CN102706825B (en) * | 2012-06-26 | 2014-02-26 | 东北大学秦皇岛分校 | Method and system for measuring concentration of chemical solution by fiber bragg gratings (FBG) |
| 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 |
| 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 |
| CN104089725A (en) * | 2014-07-25 | 2014-10-08 | 绵阳彬华科技有限公司 | Temperature sensor stable in structure |
| CN104129041A (en) * | 2014-08-07 | 2014-11-05 | 中国工程物理研究院总体工程研究所 | Packaging mould for photonic crystal fiber sensing unit |
| CN105222921A (en) * | 2015-10-17 | 2016-01-06 | 山东省科学院海洋仪器仪表研究所 | Adamas sleeve pipe encapsulation can resistant to sea water corrode fibre optic temperature sensor |
| CN105606296B (en) * | 2015-12-30 | 2018-03-23 | 南京南瑞集团公司 | A kind of optical fiber type osmotic pressure sensor with micromatic setting and self-temperature compensating |
| CN105606296A (en) * | 2015-12-30 | 2016-05-25 | 南京南瑞集团公司 | Fiber type osmotic pressure sensor with fine-tuning device and automatic temperature compensation |
| CN106932118A (en) * | 2016-11-02 | 2017-07-07 | 北京信息科技大学 | Suitable for the fiber-optic grating sensor of the encapsulation gas under vacuum environment |
| CN106969853A (en) * | 2016-11-02 | 2017-07-21 | 北京信息科技大学 | Suitable for the tubulose fiber-optic grating sensor design method under vacuum environment |
| CN107014521A (en) * | 2017-05-22 | 2017-08-04 | 中国民航大学 | Deicing spray decision system based on airfield pavement multi-point temperature measurement technology |
| CN108132105A (en) * | 2017-12-25 | 2018-06-08 | 北京信息科技大学 | Strain insensitive metallization packaged temperature sensor |
| CN109612602A (en) * | 2018-12-29 | 2019-04-12 | 北京信息科技大学 | A kind of novel fiber grating temperature sensor and packaging method |
| CN112880714A (en) * | 2021-02-01 | 2021-06-01 | 苏州工业园区华扬智能控制系统有限公司 | Fiber grating temperature and humidity sensor and temperature and humidity measuring system |
| CN112880714B (en) * | 2021-02-01 | 2023-12-22 | 寰信驿联(上海)科技有限公司 | Fiber bragg grating temperature and humidity sensor and temperature and humidity measurement system |
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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: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE NANJ Free format text: FORMER OWNER: NANJING NARI CO., LTD. Effective date: 20130806 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE Effective date: 20130806 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130806 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Electric Power Research Insititute Patentee after: Nanjing Nari Co., Ltd. Address before: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Patentee before: State Grid Electric Power Research Insititute Patentee before: Nanjing Nari Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171201 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: State Grid Electric Power Research Insititute Patentee after: State Grid Corporation of China Co-patentee after: NARI Technology Development Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Electric Power Research Insititute Patentee before: State Grid Corporation of China Co-patentee before: Nanjing Nari Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |