CN103472253A - Wind speed sensor based on optical fiber Bragg raster - Google Patents
Wind speed sensor based on optical fiber Bragg raster Download PDFInfo
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- CN103472253A CN103472253A CN2013103579755A CN201310357975A CN103472253A CN 103472253 A CN103472253 A CN 103472253A CN 2013103579755 A CN2013103579755 A CN 2013103579755A CN 201310357975 A CN201310357975 A CN 201310357975A CN 103472253 A CN103472253 A CN 103472253A
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- optical fiber
- wind speed
- bragg raster
- guide rod
- fiber bragg
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Abstract
The invention provides a wind speed sensor based on an optical fiber Bragg raster. The wind speed sensor comprises a guide rod (8) and a wind wheel (1) connected with the termination of the guide rod (8). The guide rod (8) is supported on a support (9) by using two bearings (7); a cam (2) is inlaid between the two bearings (7); an equal-strength cantilever beam (3) is fixed to one of the two bearings through screws (5); a Bragg raster (4) is adhered to the equal-strength cantilever beam (3); and the Bragg raster (4) is connected with an optical fiber demodulation instrument through an optical fiber (6). The wind speed sensor based on the optical fiber Bragg raster has the following advantages: the anti-interference capability is strong, the rotation speed of the wind wheel can be influenced by a wind speed, and the wind speed can be measured by monitoring the dislocation frequency of the center wavelength of the Bragg raster.
Description
Technical field
The present invention relates to a kind of air velocity transducer based on optical fiber Bragg raster, belong to the photoelectron field of measuring technique.
Background technology
Wind is a key factor that affects people's productive life, and the monitoring of wind speed is had to vital role in fields such as weather forecast, coal industry, electric system, navigations.At present, air velocity transducer adopts the electronic type air velocity transducer more, such sensor detects the size of wind speed by electronic component, this kind of mode easily is subject to the impact of electromagnetic interference (EMI), and, in some remote districts, the energy supply of such sensor is affected, can not realize the real time on-line monitoring to wind speed, and in special ，Ru colliery, field and petroleum industry, the air velocity transducer of electronic type is not suitable for being applied at some.Therefore, find that a kind of anti-electromagnetic interference (EMI), energy supply are stable and air velocity transducer essential safety is significant.
With the present invention approach the most be " fiber Bragg grating type wind farm wind velocity long-range detector " (referring to patent: Ni Jiasheng, Wang Chang, etc." fiber Bragg grating type wind farm wind velocity long-range detector ", application for a patent for invention number: CN 101833014).The rotation of this patent utilization vane drives the size that optical fiber Bragg raster centre wavelength is shifted to reflect wind speed, can overcome the impact of electromagnetic interference (EMI), but this patent can't be measured the wind speed of specific direction.
Summary of the invention
The object of the invention provides a kind of air velocity transducer based on optical fiber Bragg raster that can be measured the wind speed of specific direction for the weak point that overcomes above-mentioned prior art existence just.
The object of the present invention is achieved like this.
A kind of air velocity transducer based on optical fiber Bragg raster, feature of the present invention is: comprise guide rod and the fan blade that is connected to the guide rod termination, guide rod adopts two bearings on support, studs with cam on guide rod between two bearings; Be screwed equi intensity cantilever on a bearing therein, be pasted with the Bragg grating on equi intensity cantilever, the Bragg grating is connected with the optical fiber (FBG) demodulator by optical fiber.
Fan blade rotates under wind action, driving the guide rod overhead cam rotates with identical angular velocity, the displacement of free end generation that cam often rotates a circle and all can make equi intensity cantilever, that is: a centre wavelength displacement occurs in the optical fiber Bragg raster that makes to stick on equi intensity cantilever.
The size of wind speed and the rotation of fan blade have certain correlationship, that is: the transposition frequency of the centre wavelength of the size of wind speed and optical fiber Bragg raster has certain correlationship, can reflect the size of wind speed by the transposition frequency of centre wavelength of monitoring optical fiber Bragg raster.
beneficial effect of the present invention: 1,realized the Measurement accuracy to wind speed: the present invention detects wind speed by the drift frequency of measuring optical fiber Bragg raster center wavelength, and monitoring accuracy is higher.2, antijamming capability is strong: therefore because optical fiber Bragg raster is electrically insulating material, there is anti-electromagnetic interference capability (EMI), and in structure of the present invention without electrical type equipment, the present invention is applicable to the measuring wind speed under strong electromagnetic interference environment.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, each label means successively: fan blade (1), cam (2), equi intensity cantilever (3), optical fiber Bragg raster (4), screw (5), optical fiber (6), bearing (7), guide rod (8).
Embodiment
A kind of air velocity transducer based on optical fiber Bragg raster, feature of the present invention is: comprise guide rod 8 and the fan blade 1 that is connected to guide rod 8 terminations, guide rod 8 adopts two bearings 7 to be supported on support 9, studs with cam 2 on guide rod 8 between two bearings 7; Be fixed with equi intensity cantilever 3 with screw 5 on a bearing therein, be pasted with Bragg grating 4 on equi intensity cantilever 3, Bragg grating 4 is connected with the optical fiber (FBG) demodulator by optical fiber 6.
Referring to Fig. 1, fan blade 1 rotates under wind action, driving guide rod 8 overhead cams 2 rotates with identical angular velocity, the displacement of free end generation that cam 2 often rotates a circle and all can make equi intensity cantilever 3, that is: a centre wavelength displacement occurs in the optical fiber Bragg raster that makes to stick on equi intensity cantilever 3.By the frequency of monitoring optical fiber Bragg raster centre wavelength displacement, can reflect the size of wind speed in conjunction with the correlationship of wind speed and fan blade rotating speed.The frequency of drifting about by the centre wavelength of monitoring optical fiber Bragg raster 4 can reflect the size of wind speed.
Claims (1)
1. the air velocity transducer based on optical fiber Bragg raster, it is characterized in that: comprise guide rod (8) and be connected to the fan blade (1) of guide rod (8) termination, it is upper that guide rod (8) adopts two bearings (7) to be supported in support (9), between the upper two bearings (7) of guide rod (8), studs with cam (2); Be fixed with equi intensity cantilever (3) with screw (5) on a bearing therein, be pasted with Bragg grating (4) on equi intensity cantilever (3), Bragg grating (4) is connected with the optical fiber (FBG) demodulator by optical fiber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103579755A CN103472253A (en) | 2013-08-16 | 2013-08-16 | Wind speed sensor based on optical fiber Bragg raster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103579755A CN103472253A (en) | 2013-08-16 | 2013-08-16 | Wind speed sensor based on optical fiber Bragg raster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103472253A true CN103472253A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103579755A Pending CN103472253A (en) | 2013-08-16 | 2013-08-16 | Wind speed sensor based on optical fiber Bragg raster |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459182A (en) * | 2014-11-18 | 2015-03-25 | 哈尔滨工业大学 | Optical fiber speed measurement device and method for high-speed rolling bearing retainer with inner ring and outer ring rotating simultaneously |
| CN104749395A (en) * | 2013-12-26 | 2015-07-01 | 国网江西省电力公司信息通信分公司 | Wind speed measuring probe, wind speed measuring system and wind speed measuring method |
| CN107067607A (en) * | 2017-05-05 | 2017-08-18 | 武汉理工光科股份有限公司 | Perimeter security system and signal processing method based on fiber Bragg grating strain sensor |
| CN109030863A (en) * | 2018-09-04 | 2018-12-18 | 刘绍波 | A kind of fiber grating air monitoring sensor |
| CN110988388A (en) * | 2019-12-24 | 2020-04-10 | 石家庄铁道大学 | Fiber grating wind speed and direction sensor |
| CN113063517A (en) * | 2019-12-31 | 2021-07-02 | 中国移动通信集团山东有限公司 | Tire body monitoring device and tire body monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10153610A (en) * | 1996-11-22 | 1998-06-09 | Furukawa Electric Co Ltd:The | Anemometer |
| CN101191751A (en) * | 2007-12-13 | 2008-06-04 | 北京理工大学 | Torque optical fiber sensor |
| CN201497751U (en) * | 2009-08-11 | 2010-06-02 | 湘电风能有限公司 | Wind measurement device during operation of wind-driven generator group |
| CN101833014A (en) * | 2010-03-30 | 2010-09-15 | 山东省科学院激光研究所 | Fiber Bragg grating type wind farm wind velocity long-range detector |
| CN203465288U (en) * | 2013-08-16 | 2014-03-05 | 云南电力试验研究院（集团）有限公司电力研究院 | Wind speed sensor based on fiber Bragg grating |
-
2013
- 2013-08-16 CN CN2013103579755A patent/CN103472253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10153610A (en) * | 1996-11-22 | 1998-06-09 | Furukawa Electric Co Ltd:The | Anemometer |
| CN101191751A (en) * | 2007-12-13 | 2008-06-04 | 北京理工大学 | Torque optical fiber sensor |
| CN201497751U (en) * | 2009-08-11 | 2010-06-02 | 湘电风能有限公司 | Wind measurement device during operation of wind-driven generator group |
| CN101833014A (en) * | 2010-03-30 | 2010-09-15 | 山东省科学院激光研究所 | Fiber Bragg grating type wind farm wind velocity long-range detector |
| CN203465288U (en) * | 2013-08-16 | 2014-03-05 | 云南电力试验研究院（集团）有限公司电力研究院 | Wind speed sensor based on fiber Bragg grating |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749395A (en) * | 2013-12-26 | 2015-07-01 | 国网江西省电力公司信息通信分公司 | Wind speed measuring probe, wind speed measuring system and wind speed measuring method |
| CN104749395B (en) * | 2013-12-26 | 2018-01-12 | 国网江西省电力公司信息通信分公司 | Measuring wind speed probe, system and method |
| CN104459182A (en) * | 2014-11-18 | 2015-03-25 | 哈尔滨工业大学 | Optical fiber speed measurement device and method for high-speed rolling bearing retainer with inner ring and outer ring rotating simultaneously |
| CN107067607A (en) * | 2017-05-05 | 2017-08-18 | 武汉理工光科股份有限公司 | Perimeter security system and signal processing method based on fiber Bragg grating strain sensor |
| CN109030863A (en) * | 2018-09-04 | 2018-12-18 | 刘绍波 | A kind of fiber grating air monitoring sensor |
| CN109030863B (en) * | 2018-09-04 | 2023-11-10 | 刘绍波 | Fiber bragg grating wind speed monitoring sensor |
| CN110988388A (en) * | 2019-12-24 | 2020-04-10 | 石家庄铁道大学 | Fiber grating wind speed and direction sensor |
| CN113063517A (en) * | 2019-12-31 | 2021-07-02 | 中国移动通信集团山东有限公司 | Tire body monitoring device and tire body monitoring method |
| CN113063517B (en) * | 2019-12-31 | 2022-08-23 | 中国移动通信集团山东有限公司 | Tire body monitoring device and tire body monitoring method |
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Application publication date: 20131225 |