CN209690557U - A kind of intelligent fiber plate of compound multi-core optical fiber - Google Patents
A kind of intelligent fiber plate of compound multi-core optical fiber Download PDFInfo
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- CN209690557U CN209690557U CN201920509057.2U CN201920509057U CN209690557U CN 209690557 U CN209690557 U CN 209690557U CN 201920509057 U CN201920509057 U CN 201920509057U CN 209690557 U CN209690557 U CN 209690557U
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Abstract
The utility model discloses a kind of intelligent fiber plates of compound multi-core optical fiber, intelligent fiber plate includes fibrolamellar and multi-core optical fiber sensor, fibrolamellar is using fibre bundle as reinforcing material, using epoxy resin as tabular component made of matrix, multi-core optical fiber sensor includes multi-core optical fiber and the (FBG) demodulator that is connected respectively with every optical fiber, multi-core optical fiber scribes multistage grating using phase-mask method first along half eminence of the length direction arrangement intelligent fiber plate of carbon fiber wire on multi-core optical fiber；Then multi-core optical fiber and carbon fiber wire shuffling are marked into position of the grating along machine direction at bundle of composite fibers；Compound carbon fiber is woven together with common carbon fibers silk later, using epoxy resin cure at carbon fiber board.The utility model combines seven core fibre of new function material and reinforcement material carbon fiber board, realizes the dual function of engineering reinforcement and monitoring structural health conditions；Production method is simple and reliable, improves the survival rate and accuracy of sensor.
Description
Technical field
The utility model belongs to monitoring structural health conditions and engineering reinforcement technical field, and in particular to a kind of compound multi-core optical fiber
Intelligent fiber plate.
Background technique
Reinforced concrete structure will receive the external forces such as burn into earthquake in its service phase, Deterioration of Structural Performance and lose
Durability is lost, only could continue to be on active service by redesign and reinforcing.Relative to steel, concrete material, carbon fiber board has
High-strength light, corrosion-resistant, small in size, easy processing, it is easy for construction the advantages that, former scantling will not be dramatically increased.Therefore, carbon fiber
Dimension plate has been widely applied in civil engineering structure reinforcing engineering.
The health status of reinforced structure how is evaluated, the stress and civil engineering of carbon fiber board how are monitored
The key of structural strengthening technology development.Traditional sensors be difficult to it is compound with carbon fiber sheet, it is rear to paste sensor difficulty of construction is big, quasi-
Exactness is poor, survival rate is low, the service life is short, is not able to satisfy the long-periodic structure health monitoring of reinforced concrete structure.Optical fiber is as one
The novel smart sensing material of kind, is widely used to the fields such as monitoring structural health conditions, medical treatment.Seven core fibres are common in addition to having
The electromagnetism interference of optical fiber, corrosion-resistant, small in size, high sensitivity, collection sense and are transmitted in the advantages that integrated, still realize more ginsengs
It measures while monitoring, temperature, strain cross sensitivity problem is solved perfectly, and optical fiber and carbon fiber are easy to compound, it can be achieved that industrialization
Production, has broad application prospects in civil engineering reinforcement and strengthening field.
The main component of optical fiber is silica, and tensile strength is low, frangibility, and it is difficult to be directly used in carbon fiber board production technology
To guarantee its survival rate.
Utility model content
In order to solve the above-mentioned technical problem, the utility model proposes it is a kind of integrate reinforce function and monitoring function
A kind of intelligent carbon plate and preparation method thereof of compound seven core fibre of novel intelligent civil engineering material, simplifies sensor installation stream
Journey improves sensor survival rate, realizes many reference amounts while monitoring.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of intelligent fiber plate of compound seven core fibre, it is characterised in that: including fibrolamellar and multi-core optical fiber sensor,
The fibrolamellar be using fibre bundle as reinforcing material, using epoxy resin as tabular component made of matrix, the multi-core optical fiber
Sensor includes multi-core optical fiber and the (FBG) demodulator that is connected respectively with every optical fiber, and multi-core optical fiber defaults in fibrolamellar, multicore
Every optical fiber in optical fiber works independently.The intelligent fiber plate of the utility model uses a multi-core optical fiber rather than more singles
Optical fiber simplifies production technology, improves work efficiency, and solves fiber grating strain Temperature cross-over tender subject；Not same core
Institute's measured data is checked mutually, and the accuracy of monitoring data is improved.
As an improvement, the fibre bundle includes carbon fiber, glass fibre and aramid fiber.Intelligent fiber plate is by sensor seven
Core fibre and reinforcement material carbon fiber organic composite, formed integrate data sensor, data transmission, structural strengthening it is multi-functional
Civil engineering material.
As an improvement, the multi-core optical fiber is seven core fibres comprising seven core fibre of homogeneity and heterogeneous seven core fibre, seven
Fibre core works independently, while carrying out the real-time monitoring of multiple physical parameters.
As an improvement, scribing grating on seven core fibre, sensing mode includes distributed sensing and quasi-distributed biography
Sense.
As an improvement, the multi-core optical fiber both ends being set in fibrolamellar are respectively equipped with coupler, multi-core optical fiber both ends pass through
Coupler connects out the single-core fiber of respective numbers, and every single-core fiber is connected with corresponding (FBG) demodulator respectively.
A kind of intelligent fiber plate preparation method of compound seven core fibre, which comprises the following steps:
Step 1 scribes multistage grating using phase-mask method on multi-core optical fiber；
Step 2, by multi-core optical fiber and carbon fiber wire shuffling at bundle of composite fibers, mark position of the grating along machine direction；
Step 3 weaves compound carbon fiber together with common carbon fibers silk, using epoxy resin cure at carbon fiber board.
As an improvement, the grating number control is at 8 to 32, grating space is greater than 2cm.
As an improvement, the multi-core optical fiber is located at bundle of composite fibers center, guarantee the carbon fiber of multi-core optical fiber surrounding
Protective layer thickness is greater than 50 μm.
As an improvement, the core number of the multi-core optical fiber is 3-10, multi-core optical fiber end connects respective numbers by coupler
Single-core fiber, every single-core fiber connects a (FBG) demodulator.
As an improvement, the multi-core optical fiber is seven core fibres, including middle fiber core and 6 fibre cores for being distributed in its surrounding,
Wherein, middle fiber core is connected with Raman temperature measurer, is used for measurement structure temperature；
A pair of of outer ring fibre core is connected with fiber Bragg grating (FBG) demodulator, for measuring quasi-distributed strain or point strain；
A pair of of outer ring fibre core is connected with Brillouin's (FBG) demodulator, for measuring distributed strain；
One outer ring fibre core is connected with Mach-Zehnder interferometer, is used for measurement structure high-frequency vibration；
One outer ring fibre core is connected with phase sensitive optical time domain reflectometer, vibrates for measurement structure.
The intelligent carbon plate and preparation method thereof in the application has the following technical effect that compared with prior art
Multi-core optical fiber is close with carbon fiber wire shape, material, and compound firm, the two can be with compatible deformation.
As a preferred option, at the both ends of intelligent fiber plate, seven core fibres wear Loose tube, length at least 500mm, tail
Fibre is all made of armouring protection.
The utility model beneficial effect is:
Multi-core optical fiber diameter only 0.15mm, will not influence the mechanical property of carbon fiber board layer, carbon fiber board layer is to multi-core optical
Fibre has the function of seal protection, improves the survival rate of sensor, extends the service life of sensor.
The multi-core optical fiber space structure that intelligent carbon plate uses is stable, cross section of optic fibre utilization rate is high, and strain, temperature may be implemented
It is monitored while multiple physical quantitys such as degree, vibration signal, solves the problems, such as temperature strain cross sensitivity, this is monitored by not same core
Checking mutually can be improved accuracy.
The intelligent compound multi-core optical fiber of carbon plate rather than 7 single-core fibers, reduce multifiber to carbon fiber board layer
The influence of overall performance simplifies the production technology of composite fiber intelligence carbon plate, improves data sensor and efficiency of transmission.
It is first that multi-core optical fiber is compound with carbon fiber wire in the manufacturing process of intelligent carbon plate, then by bundle of composite fibers with it is general
Perforating fiber silk Woven and set improves the survival rate of fibre optical sensor in process of production at intelligent carbon plate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the intelligent carbon plate of compound seven core fibre in the utility model embodiment.
Fig. 2 is the cross-sectional view of the intelligent carbon plate of compound seven core fibre in the utility model embodiment.
Fig. 3 is the cross-sectional view of seven core fibres in the intelligent carbon plate of compound seven core fibre in the utility model embodiment.
Wherein: 1- armored optical cable, 2- grating, 3- carbon fiber board layer, seven core fibre of 4-, 5- coupler, 6- Brillouin demodulation
Instrument, 7- Mach-Zehnder interferometer, 8- Raman temperature measurer, 9- fiber Bragg grating (FBG) demodulator, 10- phase sensitive optical time domain reflectometer,
The compound carbon fiber bundle of 11-, 12- fibre core.
Specific embodiment
The preferred implementation side that according to the present invention will be described in detail below with reference to the accompanying drawings (embodiment, utility model do corresponding change)
Formula, the present embodiment are illustrated by taking seven core fibres as an example, but the technical solution of the utility model protection is not limited to seven core fibres.
In order to reach the purpose of this utility model, as shown in Figures 1 to 3, a kind of intelligent carbon plate of compound seven core fibre, below
Referred to as intelligent carbon plate, comprising: seven core fibres 4 and carbon fiber board layer 3, seven core fibres 4 can scribe grating 2 in suitable position；Seven
Core fibre 4 is also possible to other multi-core optical fibers, and carbon fiber board layer 3 is also possible to the fiber reinforcements material such as glass fibre, aramid fiber
Material.
In order to advanced optimize the implementation result of the utility model, seven core fibres 4 are placed in the center of carbon fiber board layer 3, prevent
Only seven core fibres, 4 exposed and abraded.
When data acquire, seven core fibres 4 draw seven single-core fibers by coupler 5, respectively with seven wire jumpers and corresponding
(FBG) demodulator connection；The function of seven cores is as follows in seven core fibres 4:
Middle fiber core a is connected with Raman temperature measurer 8 (ROTDR), is used for measurement structure temperature；
A pair of of outer ring fibre core b (symmetrical centered on middle fiber core a) is connected with fiber Bragg grating (FBG) demodulator 9 (FBG), for surveying
Measure quasi-distributed strain or point strain；
A pair of of outer ring fibre core c (symmetrical centered on middle fiber core a) is connected with Brillouin's (FBG) demodulator 6 (BOTDA/BOTDR),
For measuring distributed strain；
Outer ring fibre core d is connected with Mach-Zehnder interferometer 7 (MZI), is used for measurement structure high-frequency vibration；
Outer ring fibre core e is connected with phase sensitive optical time domain reflectometer 10 (Phi-OTDR), vibrates for measurement structure.
The application is not construed as limiting the function of seven cores in seven core fibres 4, can adjust according to the actual situation.
A kind of production method of the intelligent carbon plate of compound seven core fibre, specifically includes the following steps:
S1. a certain number of gratings are scribed in the suitable position of seven core fibre 4 using phase-mask method；
S2. 500mm length range is no less than at seven core fibres, 4 both ends and wears Loose tube, heat Loose tube end using rifle is dried
Portion makes its softening seven core fibre 4 of fitting；
S3. ready seven core fibre and carbon fiber wire are combined into carbon fiber bundle (length of seven core fibres along carbon fiber wire
Spend direction arrangement), mark position of the grating along machine direction；
S4. compound carbon fiber bundle woven together with common carbon fibers silk, be solidified into carbon fiber board, seven core fibres are in carbon
Half eminence of fiberboard.
Intelligent carbon plate in the application and preparation method thereof has the following technical effect that
Seven core fibres 4 are close with carbon fiber wire shape, material, and compound firm, the two can be with compatible deformation.
Seven core fibres, 4 diameter only 0.15mm, will not influence the mechanical property of carbon fiber board layer 3,3 pair of seven core of carbon fiber board layer
Optical fiber 4 has the function of seal protection, improves the survival rate of sensor, extends the service life of sensor.
Seven core fibres, 4 space structure that intelligent carbon plate uses is stable, cross section of optic fibre utilization rate is high, may be implemented strain,
It is monitored while multiple physical quantitys such as temperature, vibration signal, solves the problems, such as temperature strain cross sensitivity, monitored by not same core
Accuracy can be improved in check mutually for this.
Intelligent compound seven core fibres 4 of carbon plate rather than 7 single-core fibers, reduce multifiber to carbon fiber board layer
The influence of 3 overall performances simplifies the production technology of composite fiber intelligence carbon plate, improves data sensor and efficiency of transmission.
It is first that seven core fibres 4 and carbon fiber wire are compound in the manufacturing process of intelligent carbon plate, then by bundle of composite fibers with it is general
Perforating fiber silk Woven and set improves the survival rate of fibre optical sensor in process of production at intelligent carbon plate.
The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill people of this field
For member, without departing from the concept of the present invention, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.
Claims (8)
1. a kind of intelligent fiber plate of compound multi-core optical fiber, it is characterised in that: including fibrolamellar and multi-core optical fiber sensor, institute
Stating fibrolamellar is using fibre bundle as reinforcing material, and using epoxy resin as tabular component made of matrix, the multi-core optical fiber is passed
Sensor includes multi-core optical fiber and the (FBG) demodulator that is connected respectively with every optical fiber, and multi-core optical fiber defaults in fibrolamellar, multi-core optical
Every optical fiber in fibre works independently.
2. intelligent fiber plate as described in claim 1, it is characterised in that: the fibre bundle include carbon fiber, glass fibre and
Aramid fiber.
3. intelligent fiber plate as claimed in claim 2, it is characterised in that: the multi-core optical fiber is seven core fibres comprising same
Seven core fibre of matter and heterogeneous seven core fibre, seven fibre cores work independently, while carrying out the real-time monitoring of multiple physical parameters.
4. intelligent fiber plate as claimed in claim 3, it is characterised in that: scribe grating, sensing side on seven core fibre
Formula includes distributed sensing and quasi-distributed sensing.
5. intelligent fiber plate as described in claim 1, it is characterised in that: the multi-core optical fiber both ends difference in fibrolamellar
Equipped with coupler, multi-core optical fiber both ends connect out the single-core fiber of respective numbers by coupler, every single-core fiber respectively with
Corresponding (FBG) demodulator is connected.
6. intelligent fiber plate as claimed in claim 4, it is characterised in that: the grating number control is between 8 to 32, grating
Away from greater than 2cm.
7. intelligent fiber plate as described in claim 1, it is characterised in that: the core number of the multi-core optical fiber is 3-10, multi-core optical
Fine end connects the single-core fiber of respective numbers by coupler, and every single-core fiber connects a (FBG) demodulator.
8. intelligent fiber plate as claimed in claim 3, it is characterised in that: seven core fibre includes middle fiber core and is distributed in
6 fibre cores of its surrounding, wherein middle fiber core is connected with Raman temperature measurer, is used for measurement structure temperature；
A pair of of outer ring fibre core is connected with fiber Bragg grating (FBG) demodulator, for measuring quasi-distributed strain or point strain；
A pair of of outer ring fibre core is connected with Brillouin's (FBG) demodulator, for measuring distributed strain；
One outer ring fibre core is connected with Mach-Zehnder interferometer, is used for measurement structure high-frequency vibration；
One outer ring fibre core is connected with phase sensitive optical time domain reflectometer, vibrates for measurement structure.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110007392A (en) * | 2019-04-15 | 2019-07-12 | 武汉地震工程研究院有限公司 | A kind of intelligent fiber plate of compound multi-core optical fiber and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110007392A (en) * | 2019-04-15 | 2019-07-12 | 武汉地震工程研究院有限公司 | A kind of intelligent fiber plate of compound multi-core optical fiber and preparation method thereof |
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