CN103076123A - Optical fiber sensing device based on composite material - Google Patents
Optical fiber sensing device based on composite material Download PDFInfo
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- CN103076123A CN103076123A CN 201110329966 CN201110329966A CN103076123A CN 103076123 A CN103076123 A CN 103076123A CN 201110329966 CN201110329966 CN 201110329966 CN 201110329966 A CN201110329966 A CN 201110329966A CN 103076123 A CN103076123 A CN 103076123A
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Abstract
The invention discloses an optical fiber sensing device based on composite material. The device comprises a column body and a groove formed in the column body; deformed teeth which are staggered and corresponding to one other are respectively formed on opposite two surfaces of the groove; and signal fiber is clamped between the deformed teeth arranged two opposite surfaces of the groove; the signal fiber is connected with a test unit; the column body is made of at least 2-layered composite materials, and different materials are distributed along the radial direction of the column body layer by layer. The optical fiber sensing device provided by the invention greatly reduces the weight of the column body on the basis of ensuring the rigidity, and has larger deformation capability, so that an optical fiber stress monitoring device provided by the invention has the characteristics of long service life, high precision and wide usage.
Description
Technical field
The invention belongs to the fibre-optical sensing device technical field, be specifically related to a kind of fibre-optical sensing device based on compound substance.
Background technology
Because the needs to landslide, rubble flow, earthquake and the health monitoring of large-sized artificial buildings, the ess-strain parameter monitoring is one of important parameter of being concerned about most of technician, and traditional sensor take electricity and magnetic as core is owing to the defective of the aspects such as permanance, antijamming capability causes its range of application narrow.Development along with the deep and optical fiber technology that optical fiber is understood; increasing scholar tends to adopt optical fiber technology scheme counter stress to carry out point type and distributed monitoring; in the patent documentation of Chinese patent application number 201020516566.7 " a kind of cylinder stress sensing apparatus "; a kind of sensing device of optical fiber micro-bending principle of cylindricality has been proposed; reached the optical fiber that namely can effectively protect sensing by prefabricated Microbend structures; the purpose of monitoring that again can be effective, quantitative; simultaneously can expand to distributed monitoring system, have certain superiority.But when the large deformation monitoring such as coming down, can not meeting the demands of general cylindrical material is when cylindrical material is selected metal material, though have certain rigidity, but deflection is less, can phenomenon of rupture occur and make sensor failure above cylindrical material behind certain deflection; When selecting to have the nonmetallic materials of favorable elasticity, rigidity is not enough, and along with the increase of cylinder length, himself weight can cause the cylinder distortion, has affected use and the precision of this sensing device.These have all limited the promoting the use of of Fibre Optical Sensor of this invention.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of fibre-optical sensing device based on compound substance, this fibre-optical sensing device has significantly reduced the weight of cylinder on the basis that guarantees rigidity, and has the ability of moderate finite deformation.Make optical fiber stress monitoring device of the present invention have the advantages that long service life, precision are high, purposes is wide.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of fibre-optical sensing device based on compound substance, comprise cylinder 10 and the groove 4 that distributes at cylinder 10, the A side distortion tooth 4-1 and the B side distortion tooth 4-2 that have respectively interlaced correspondence on the relative two sides of groove 4, and between the A side distortion tooth 4-1 on the relative two sides of groove 4 and B side distortion tooth 4-2, accompany signal optical fibre 6, signal optical fibre 6 joins with test cell 5, it is characterized in that: described cylinder 10 is to be made of at least 2 layers of different material, and described different material is radially successively distributing along cylinder.
Described cylinder 10 internal layers are enhancement Layers 8.
Described cylinder 10 is to be made of 3 layer materials, and its middle layer is enhancement Layer 8.
Described enhancement Layer 8 is to be composited by base material and reinforcing fibre.
Described base material is macromolecular material or aluminium alloy.
Described reinforcing fibre is steel wire, glass fibre, boron carbide fibre, carbon fiber, aramid fiber, high-modulus polyethylene fibres or pbo fiber.
Described reinforcing fibre is along cylinder axis to Spiral distribution.
The base material of described enhancement Layer 8 is hot melt adhesives.
Described cylinder 10 outermost layers 12 materials are rigid polyvinyl chlorides.
Described cylinder 10 innermost layers 9 materials are tygon.
When cylinder is out of shape under stress, the wide variety of groove, distance between the distortion tooth on the relative two sides of groove also can be changed, thereby the bending curvature of the signal optical fibre that is held on the distortion between cog is changed, this makes again the bending loss of signal optical fibre change, the size that the signal optical fibre bending loss changes can be obtained by test cell, and the size of the suffered stress of cylinder can be extrapolated.
The present invention compared with prior art has the following advantages:
1, in the fibre-optical sensing device based on compound substance, the compound substance that cylinder adopts has larger deformability under stress to be monitored or displacement effect, make this sensing device have larger test dynamic range;
2, in the fibre-optical sensing device based on compound substance, the compound substance that cylinder adopts can significantly reduce the weight of self, has reduced the impact of own wt on sensing device on the one hand, has reduced simultaneously the cost of production, transportation and use, is more conducive to promote;
3, in the fibre-optical sensing device based on compound substance, because the compound substance that cylinder adopts consists of, increased elasticity and the diastrophic ability of cylinder, had again suitable rigidity simultaneously, thereby effectively adapt to the demand of Practical Project condition.
In sum, the present invention is simple in structure, reasonable in design, processing and fabricating convenient and use-pattern is flexible, highly sensitive, result of use is good, cylinder not only has certain rigidity after adopting compound substance, have simultaneously larger deformability, make device of the present invention have better precision, longer serviceable life and more excellent adaptive capacity to environment.
Below by drawings and Examples, the technical scheme of inventing is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the present invention's the first embodiment.
Fig. 2 is the cross-sectional view of the A-A ' on cylinder edge among Fig. 1.
Fig. 3 is the cross-sectional view of the present invention's the second embodiment.
Fig. 4 is the cross-sectional view of the present invention's the 3rd embodiment.
Description of reference numerals:
The 1-extended fiber; The 4-groove; 4-1-A side distortion tooth;
4-2-B side distortion tooth; The 5-test cell; The 6-signal optical fibre;
The 7-processing unit; The 8-enhancement Layer; The 9-innermost layer; The 10-cylinder;
The 12-outermost layer.
Embodiment
As shown in Figure 1 and Figure 2, present invention resides in and be distributed with groove 4 on the cylinder 10, the A side distortion tooth 4-1 and the B side distortion tooth 4-2 that have respectively interlaced correspondence on the relative two sides of groove 4, and between the distortion tooth on the relative two sides of groove 4, accompany signal optical fibre 6, signal optical fibre 6 connects test cell 5 by extended fiber 1, connect processing unit 7 in test cell 5 back, particularly cylinder 10 is to be formed by different Material claddings, namely is made of enhancement Layer 8 and outermost layer 12.
Preferably, described enhancement Layer 8 is by macromolecular material and reinforcing fibre compound substance, makes cylinder 10 not only have certain rigidity, and has larger deformability; When cylinder 10 is out of shape under stress, the wide variety of groove 4, distance between the distortion tooth on the relative two sides of groove 4 also can be changed, thereby the bending curvature of the signal optical fibre 6 that is held on the distortion between cog is changed, this makes again the bending loss of signal optical fibre 6 change, can obtain the size that signal optical fibre 6 bending losss change by test cell 5, and pass to processing unit 7, processing unit 7 is extrapolated the size of cylinder 10 suffered stress.Because there is the distortion tooth of numerous interlaced correspondences the relative both sides of the groove 4 on cylinder 10, thereby the length of effective sweep of signal optical fibre 6 is prolonged greatly, reduced on the one hand the bending curvature of signal optical fibre 6, improve on the other hand the precision of this device, also greatly prolonged simultaneously the serviceable life of signal optical fibre 6, because what cylinder 10 adopted is compound substance, so cylinder 10 has larger deformability under stress F effect, thereby the width change scope of groove 4 is increased, this makes again the bending loss variable dynamic range of signal optical fibre 6 enlarge, and makes this sensing device have the ability of monitoring large deformation.
Preferably, the base material of described enhancement Layer 8 is the macromolecular materials such as tygon, polypropylene, Polyvinylchloride, not only lightweight, deformability is large, and cost is lower.Certainly, base material also can be selected fine aluminium, aluminium alloy, iron or ferroalloy, copper and aldary, makes cylinder 10 have higher rigidity.
Preferably, described reinforcing fibre is steel wire, glass fibre, boron carbide fibre, carbon fiber, aramid fiber, high-modulus polyethylene fibres or pbo fiber.
Preferably, described reinforcing fibre is along cylinder axis to Spiral distribution.
Certainly, also can settle the tubing with certain rigidity in inside or the outside of cylinder 10, such as iron pipe, aluminum pipe, hard polyethylene chloride tube, increase on the one hand the rigidity of cylinder 10, strengthen simultaneously the protection to cylinder 10 and signal optical fibre 6.
Embodiment 2
As shown in Figure 3, in the present embodiment, as different from Example 1: the stress F that applies is upper end or the bottom that acts on cylinder 10, makes cylinder 10 present whole bending.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 3
As shown in Figure 4, in the present embodiment, as different from Example 1: cylinder 10 is to be composited by 3 layer materials.
Preferably, the base material of described enhancement Layer 8 is hot melt adhesives, and its reinforcing fibre is steel wire, thereby on the basis of the rigidity that guarantees cylinder 10 and deformability, can reduce cost, is easy to promotion and implementation.
Preferably, described cylinder 10 outermost material are rigid polyvinyl chlorides, and groove also is distributed on this layer material.
Preferably, described cylinder 10 innermost layer materials are tygon.
In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. fibre-optical sensing device based on compound substance, comprise cylinder (10) and the groove (4) that distributes at cylinder (10), the A side distortion tooth (4-1) and the B side distortion tooth (4-2) that have respectively interlaced correspondence on the relative two sides of groove (4), and be out of shape between the tooth (4-2) in the A side distortion tooth (4-1) on the relative two sides of groove (4) and B side and accompany signal optical fibre (6), signal optical fibre (6) joins with test cell (5), it is characterized in that: described cylinder (10) is to be made of at least 2 layers of different material, and described different material is radially successively distributing along cylinder.
2. fibre-optical sensing device according to claim 1, it is characterized in that: described cylinder (10) internal layer is enhancement Layer (8).
3. fibre-optical sensing device according to claim 1, it is characterized in that: described cylinder (10) is to be made of 3 layer materials, its middle layer is enhancement Layer (8).
4. according to claim 2 or 3 described fibre-optical sensing devices, it is characterized in that: described enhancement Layer (8) is to be composited by base material and reinforcing fibre.
5. fibre-optical sensing device according to claim 4, it is characterized in that: described base material is macromolecular material or aluminium alloy.
6. fibre-optical sensing device according to claim 4, it is characterized in that: described reinforcing fibre is steel wire, glass fibre, boron carbide fibre, carbon fiber, aramid fiber, high-modulus polyethylene fibres or pbo fiber.
7. fibre-optical sensing device according to claim 4, it is characterized in that: described reinforcing fibre is along cylinder axis to Spiral distribution.
8. fibre-optical sensing device according to claim 4, it is characterized in that: the base material of described enhancement Layer (8) is hot melt adhesive.
9. according to claim 2 or 3 described fibre-optical sensing devices, it is characterized in that: described cylinder (10) outermost layer (12) material is rigid polyvinyl chloride.
10. fibre-optical sensing device according to claim 3, it is characterized in that: described cylinder (10) innermost layer (9) material is tygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110329966 CN103076123A (en) | 2011-10-26 | 2011-10-26 | Optical fiber sensing device based on composite material |
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| CN 201110329966 CN103076123A (en) | 2011-10-26 | 2011-10-26 | Optical fiber sensing device based on composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792033A (en) * | 2014-02-18 | 2014-05-14 | 西安交通大学 | Method and device for automatically planting optical fiber into composite materials based on fiber laying and placing |
| CN104062050A (en) * | 2014-06-30 | 2014-09-24 | 中国一冶集团有限公司 | Steel strand used for prestressed concrete, binding method and binding device of optical fiber and steel strand |
| WO2024067233A1 (en) * | 2022-09-26 | 2024-04-04 | 中交第一公路勘察设计研究院有限公司 | Bulge self-sensing plate type support, manufacturing method, monitoring system and monitoring method |
-
2011
- 2011-10-26 CN CN 201110329966 patent/CN103076123A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792033A (en) * | 2014-02-18 | 2014-05-14 | 西安交通大学 | Method and device for automatically planting optical fiber into composite materials based on fiber laying and placing |
| CN103792033B (en) * | 2014-02-18 | 2015-12-02 | 西安交通大学 | The method of the automatic composite implant material of the optical fiber based on fiber placement and device |
| CN104062050A (en) * | 2014-06-30 | 2014-09-24 | 中国一冶集团有限公司 | Steel strand used for prestressed concrete, binding method and binding device of optical fiber and steel strand |
| WO2024067233A1 (en) * | 2022-09-26 | 2024-04-04 | 中交第一公路勘察设计研究院有限公司 | Bulge self-sensing plate type support, manufacturing method, monitoring system and monitoring method |
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Application publication date: 20130501 |