CN113639648A - Top plate separation layer sensor based on fiber grating technology - Google Patents
Top plate separation layer sensor based on fiber grating technology Download PDFInfo
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- CN113639648A CN113639648A CN202110912043.7A CN202110912043A CN113639648A CN 113639648 A CN113639648 A CN 113639648A CN 202110912043 A CN202110912043 A CN 202110912043A CN 113639648 A CN113639648 A CN 113639648A
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- support
- roller
- jaw
- fiber grating
- protective
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- 239000000835 fiber Substances 0.000 title claims abstract description 20
- 238000000926 separation method Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000032798 delamination Effects 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to the technical field of mines, and discloses a top plate separation layer sensor based on a fiber grating technology, which is characterized in that: the device comprises a deep jaw, a steel wire rope, a shallow jaw, a sealing plug, a protective pipe jaw, a protective pipe, a protective cover, a steel ruler, a support A, a cantilever beam, a shaft, a support B, a sleeve, a spiral spring, a baffle and a roller. This roof separation layer sensor based on fiber grating technique utilizes the motion of roof rock stratum to make the anchor grab corresponding displacement, and the motion through a series of mechanisms makes the optic fibre of fixing on the cantilever beam take place the deformation, and the demodulation instrument monitors out the change of optic fibre wavelength afterwards to calculate roof separation layer data. When the rock stratum moves in the opposite direction, the shaft and the roller rotate in the opposite direction under the action of the spring, and the separation data is measured in the same way.
Description
Technical Field
The invention relates to the technical field of mines, in particular to a top plate separation layer sensor based on a fiber grating technology.
Background
The roof separation indicator (hereinafter referred to as "separation indicator") in the past measures and calculates the separation distance by measuring the resistance of a steel wire rope, and because the interior of a coal mine has strict explosion-proof requirements, the battery and the digital display part of the separation indicator need to additionally carry out explosion-proof consideration, an explosion-proof shell is added, meanwhile, a wireless transmission module needs to transmit collected data, special data collection equipment is used for collecting the data, the types of equipment are increased, the steps are complicated during use, and the equipment is heavy and high in cost.
Therefore, a top plate delamination sensor based on the fiber grating technology is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the top plate delamination sensor based on the fiber grating technology, and the top plate delamination sensor can obtain the top plate delamination data only by calculating the wavelength change of the fiber grating transmitted by the delamination instrument in a control room through a simple mechanism without extra protection, and the calculated delamination data is very accurate because the wavelength change of the fiber grating is very sensitive, and the characteristics of the optical fiber enable equipment not to be afraid of the influence of external factors such as dust, temperature, moisture and the like.
The invention provides the following technical scheme: the utility model provides a roof separation layer sensor based on fiber grating technique which characterized in that: the device comprises a deep jaw, a steel wire rope, a shallow jaw, a sealing plug, a protective pipe jaw, a protective pipe, a protective cover, a steel ruler, a support A, a cantilever beam, a shaft, a support B, a sleeve, a spring, a baffle and a roller;
the protective cover is provided with a support A and a support B, the cantilever beam is arranged on the support A, sleeves are arranged on the support A and the support B, the roller is positioned in the sleeve and connected with the sleeve through a shaft, the spring and the baffle are arranged on the inner side of the roller, the steel ruler is wound on the roller and extends out of the protective cover, and the steel wire rope is wound on the roller;
the cantilever beam is provided with an optical fiber;
the protection casing is installed on the protecting cover, and the protecting tube is installed on the protection casing, the protecting tube jack catch is installed to the one end of protecting tube, and the inside sealed end cap that is equipped with of one end of protecting tube, and two wire rope extend and derive and be connected with deep jack catch and shallow jack catch from sealed end cap in following the protecting tube.
Preferably, the roller on the A support is connected with the deep jaw through a steel wire rope.
Compared with the prior art, the invention has the following beneficial effects:
this roof separation layer sensor based on fiber grating technique utilizes the motion of roof rock stratum to make the anchor grab corresponding displacement, and the motion through a series of mechanisms makes the optic fibre of fixing on the cantilever beam take place the deformation, and the demodulation instrument monitors out the change of optic fibre wavelength afterwards to calculate roof separation layer data. When the rock stratum moves in the opposite direction, the shaft and the roller rotate in the opposite direction under the action of the spring, and the separation data is measured in the same way.
The motion of roof stratum can make the deep anchor grab take place the displacement, fixes the steel cable on the anchor grab and can make gyro wheel and axle synchronous revolution, and the axle can lateral motion under the effect of screw thread, and the cantilever beam is being pushed against to the end of axle, and the optic fibre of fixing on the cantilever beam can be crooked along with the deformation of cantilever beam, and the demodulation instrument calculates the optic fibre wavelength change thereupon, and then calculates the absciss layer data. When the rock stratum moves in the opposite direction, the shaft and the idler wheel rotate in the opposite direction under the action of the clockwork spring, and the separation data is measured in the same way;
compared with the prior art, the device can effectively improve the measurement accuracy, reduce manual on-site measurement, avoid dust and moisture and need no additional explosion-proof measures.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the internal structure of the protecting cover of the present invention.
In the figure: 1. a deep jaw; 2. a wire rope; 3. shallow jaw; 4. sealing the plug; 5. a protective tube jaw; 6. a protective tube; 7. a protective cover; 8. a protective cover; 9. a steel ruler; 10. a, a support; 11. a cantilever beam; 12. a shaft; 13. b, a support; 14. a sleeve; 15. a clockwork spring; 16. a baffle plate; 17. and a roller.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure, and in order to keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known parts of the disclosure are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.
Referring to fig. 1-2, a top plate delamination sensor based on fiber grating technology is characterized in that: the device comprises a deep jaw 1, a steel wire rope 2, a shallow jaw 3, a sealing plug 4, a protective pipe jaw 5, a protective pipe 6, a protective cover 7, a protective cover 8, a steel ruler 9, an A support 10, a cantilever beam 11, a shaft 12, a B support 13, a sleeve 14, a spring 15, a baffle 16 and a roller 17;
the protective cover 10 is provided with an A support 10 and a B support 13, the cantilever beam 11 is arranged on the A support 10, the A support 10 and the B support 13 are both provided with a sleeve 14, a roller 17 is positioned in the sleeve 14 and connected with the sleeve 14 through a shaft 12, the spring 15 and the baffle 16 are arranged on the inner side of the roller 17, the steel ruler 9 is wound on the roller 17 and extends out of the protective cover 10, and the steel wire rope 2 is wound on the roller 17;
the cantilever beam 11 is provided with an optical fiber;
protection casing 7 is installed on protective cover 10, and protective tube 6 installs on protection casing 7, protective tube jack catch 5 is installed to the one end of protective tube 6, and the inside sealed end cap 4 that is equipped with of one end of protective tube 6, and two wire rope 2 extend from protective tube 6 and derive and be connected with deep jack catch 1 and shallow jack catch 3 from sealed end cap 4.
And the roller 17 on the A support 10 is connected with the deep jaw 1 through a steel wire rope 2.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (2)
1. The utility model provides a roof separation layer sensor based on fiber grating technique which characterized in that: the device comprises a deep jaw (1), a steel wire rope (2), a shallow jaw (3), a sealing plug (4), a protective pipe jaw (5), a protective pipe (6), a protective cover (7), a protective cover (8), a steel ruler (9), an A support (10), a cantilever beam (11), a shaft (12), a B support (13), a sleeve (14), a spring (15), a baffle (16) and a roller (17);
the steel ruler is characterized in that a support A (10) and a support B (13) are mounted on the protective cover (10), the cantilever beam (11) is mounted on the support A (10), sleeves (14) are mounted on the support A (10) and the support B (13), the roller (17) is located inside the sleeve (14) and connected with the sleeve (14) through a shaft (12), the spring (15) and the baffle (16) are arranged on the inner side of the roller (17), the steel ruler (9) is wound on the roller (17) and extends out of the protective cover (10), and the steel wire rope (2) is wound on the roller (17);
the cantilever beam (11) is provided with an optical fiber;
protection casing (7) are installed on protective cover (10), and protective tube (6) are installed on protection casing (7), protective tube jack catch (5) are installed to the one end of protective tube (6), and the one end inside of protective tube (6) is equipped with sealed end cap (4), and two wire rope (2) extend from protective tube (6) and derive from sealed end cap (4) and be connected with deep jack catch (1) and shallow jack catch (3).
2. The top plate delamination sensor based on the fiber grating technology as claimed in claim 1, wherein: and the roller (17) on the A support (10) is connected with the deep jaw (1) through a steel wire rope (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912043.7A CN113639648A (en) | 2021-08-10 | 2021-08-10 | Top plate separation layer sensor based on fiber grating technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912043.7A CN113639648A (en) | 2021-08-10 | 2021-08-10 | Top plate separation layer sensor based on fiber grating technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113639648A true CN113639648A (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110912043.7A Pending CN113639648A (en) | 2021-08-10 | 2021-08-10 | Top plate separation layer sensor based on fiber grating technology |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528530A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Monitoring device and monitoring method for mining FBG (fiber bragg grating) roof separation layer |
| CN103759659A (en) * | 2014-01-27 | 2014-04-30 | 山东微感光电子有限公司 | Fiber bragg grating displacement sensor capable of conducting multi-point measurement |
| CN203605911U (en) * | 2013-12-12 | 2014-05-21 | 河北地经光电科技有限公司 | Fiber grating based coal-mine roof separation layer displacement sensor |
| CN209166366U (en) * | 2018-12-26 | 2019-07-26 | 新疆维吾尔自治区煤炭科学研究所 | A kind of novel top panel separation indicator based on fiber grating sensing technology |
| CN212340171U (en) * | 2020-07-06 | 2021-01-12 | 天津求实飞博科技有限公司 | Strain coefficient self-adaptive mining surrounding rock optical fiber displacement sensor |
| CN213748280U (en) * | 2020-12-21 | 2021-07-20 | 山东超晟光电科技有限公司 | Optical fiber passive roof separation instrument |
| CN113188407A (en) * | 2021-04-01 | 2021-07-30 | 安徽蓝科光电科技有限公司 | Measuring device and measuring method for fiber bragg grating separation layer |
| CN113639649A (en) * | 2021-08-10 | 2021-11-12 | 合肥市光感芯科技有限公司 | Strain type roof separation layer sensor based on fiber bragg grating |
-
2021
- 2021-08-10 CN CN202110912043.7A patent/CN113639648A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528530A (en) * | 2013-10-25 | 2014-01-22 | 中国矿业大学 | Monitoring device and monitoring method for mining FBG (fiber bragg grating) roof separation layer |
| CN203605911U (en) * | 2013-12-12 | 2014-05-21 | 河北地经光电科技有限公司 | Fiber grating based coal-mine roof separation layer displacement sensor |
| CN103759659A (en) * | 2014-01-27 | 2014-04-30 | 山东微感光电子有限公司 | Fiber bragg grating displacement sensor capable of conducting multi-point measurement |
| CN209166366U (en) * | 2018-12-26 | 2019-07-26 | 新疆维吾尔自治区煤炭科学研究所 | A kind of novel top panel separation indicator based on fiber grating sensing technology |
| CN212340171U (en) * | 2020-07-06 | 2021-01-12 | 天津求实飞博科技有限公司 | Strain coefficient self-adaptive mining surrounding rock optical fiber displacement sensor |
| CN213748280U (en) * | 2020-12-21 | 2021-07-20 | 山东超晟光电科技有限公司 | Optical fiber passive roof separation instrument |
| CN113188407A (en) * | 2021-04-01 | 2021-07-30 | 安徽蓝科光电科技有限公司 | Measuring device and measuring method for fiber bragg grating separation layer |
| CN113639649A (en) * | 2021-08-10 | 2021-11-12 | 合肥市光感芯科技有限公司 | Strain type roof separation layer sensor based on fiber bragg grating |
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