CN203551177U - Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure - Google Patents
Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure Download PDFInfo
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- CN203551177U CN203551177U CN201320586291.8U CN201320586291U CN203551177U CN 203551177 U CN203551177 U CN 203551177U CN 201320586291 U CN201320586291 U CN 201320586291U CN 203551177 U CN203551177 U CN 203551177U
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- photonic crystal
- polarization
- crystal fiber
- maintaining
- pressure sensor
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Abstract
The utility model discloses a micro-gap interlayer photonic crystal fiber pressure sensor in a pre-tightening composite structure. The photonic crystal fiber pressure sensor comprises three polarization-maintaining photonic crystal fibers and a substrate material, wherein each polarization-maintaining photonic crystal fiber is a polarization-maintaining photonic crystal fiber which undergoes multiples times of bending and folding. One surfaces of the three polarization-maintaining photonic crystal fibers are adhered to the substrate material while the other surfaces are in contact with a buffer cushion layer. An included angle between center lines of two adjacent polarization-maintaining photonic crystal fibers is 45 DEG. The photonic crystal fiber pressure sensor adopts the polarization-maintaining crystal fibers and makes use of the advantages of the polarization-maintaining crystal fibers, like small size, yieldingness, high sensitivity, resistance to temperature interference, resistance to electromagnetic interference and radiation and intrinsic safety, and solves a problem that a conventional pressure sensor cannot measure an irregular plane in a narrow space.
Description
Technical field
The utility model relates to a kind of pressure transducer, relates in particular to microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction.
Background technology
Pretension unitized construction refers to the tight structure together of component combination with several unlike materials and random geometry, between parts, gap only has hundreds of micron, in the concentrated place of some stress, press from both sides one deck as cushion materials such as foamed rubber, adhesive tapes, a kind of special structure of formation.During this Standard, externally apply a pretightning force, this pretightning force is delivered to mineralization pressure on intraware, be used for preventing that the phenomenons such as slippage, structural instability from appearring in its parts, cause total part hydraulic performance decline, and between pre-pressing structure parts upper and lower pieces, gap is little, and usual pressure sensor cannot Installation and Measurement.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem interlayer photonic crystal fiber pressure transducer in microclearance in a kind of pretension unitized construction.
In order to achieve the above object, the utility model has adopted following technical scheme:
Microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction, comprise three polarization-maintaining photonic crystal fibers and base material, described polarization-maintaining photonic crystal fiber is the polarization-maintaining photonic crystal fiber after bending fold repeatedly, the one side of three described polarization-maintaining photonic crystal fibers is bonding with described base material, another side contacts with cushion, and between the center line of adjacent two described polarization-maintaining photonic crystal fibers, angle is 45 °.
Particularly, described polarization-maintaining photonic crystal fiber comprises photonic crystal fibre core, covering and buffering coat, in described buffering coat, is coated with described covering, is coated with described photonic crystal fibre core in described covering.
Particularly, in described covering and described photonic crystal fibre core, be provided with a plurality of through holes.
As preferably, described base material adopts polytetrafluoroethylene film substrate, paper substrates or metallic substrates.
The beneficial effects of the utility model are:
Microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction of the utility model, adopted polarization-maintaining photonic crystal fiber, utilize that its volume is little, flexible, highly sensitive, the advantage such as resisting temperature is disturbed, anti-electromagnetic interference (EMI) and radiation, essential safety, solved the problem that current pressure transducer can not be measured concave plane in small space.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of polarization-maintaining photonic crystal fiber described in the utility model;
Fig. 3 is detail of construction of the present utility model;
Fig. 4 is example structure schematic diagram of the present utility model.
In figure: 1-polarization-maintaining photonic crystal fiber, 2-base material, part on 3-pre-pressing structure, 4-cushion, part under 5-pre-pressing structure, 6-photonic crystal fibre core, 7-covering, 8-cushions coat.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in figures 1 and 3, microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction of the utility model, comprise three polarization-maintaining photonic crystal fibers 1 and base material 2, polarization-maintaining photonic crystal fiber 1 is the polarization-maintaining photonic crystal fiber 1 after bending fold repeatedly, the one side of three described polarization-maintaining photonic crystal fibers 1 is bonding with described base material 2, another side contacts with cushion 4, cushion 4 tops are part 3 on pre-pressing structure, the bottom of base material 2 is part 5 under pre-pressing structure, between the center line of adjacent two polarization-maintaining photonic crystal fibers 1, angle is 45 °, thereby obtain 0 °, 45 ° and 90 ° of three axial pressure informations.
As shown in Figure 2, polarization-maintaining photonic crystal fiber 1 comprises photonic crystal fibre core 6, covering 7 and buffering coat 8, in buffering coat 8, is coated with covering 7, is coated with photonic crystal fibre core 6 in covering 7.In covering 7 and photonic crystal fibre core 6, be provided with a plurality of through holes.
As preferably, base material 2 generally selects polytetrafluoroethylene film as base material, also can adopt paper substrates, metallic substrates etc.
As shown in Figure 4, for another kind of embodiment of the present utility model: the many folding polarization-maintaining photonic crystal fibers 1 of unwarped are parallel to each other and are bonded on base material 2, between the folding polarization-maintaining photonic crystal fiber 1 of many unwarped, be parallel to each other in addition, and also contact without folding polarization-maintaining photonic crystal fiber 1 is mutually vertical with many that are bonded on base material 2, form sensing network.
In the utility model, adopt optical fiber splicing method simply polarization-maintaining photonic crystal fiber 1 to be connected with normal transmission optical fiber, be convenient to sensor probe and other equipment connections.Base material 2 is polarization-maintaining photonic crystal fiber 1 to be fixed on to the intermediate medium of its lower one side, can use the membraneous material of two sides zone face glue, also can use the membraneous material of two sides band static.
The sensing principle of the utility model sensor forms Sagnac by high index of refraction polarization-maintaining photonic crystal fiber 1 and encircles, when its horizontal pressurized, in optical fiber cross section, produce ess-strain, according to elasto-optical effect equivalence, to the stress in x, two principal directions of y, can cause correspondence direction refractive index n in optical fiber
x, n
ychange, thereby change its birefraction, cause transmission interference spectum phase place in Sagnac ring to change, make to interfere valley spike to move to a direction, by demarcations, search out wavelength value and move the corresponding relation with pressure, can realize pressure force measurement.
When it is applied to pretightning force, polarization-maintaining photonic crystal fiber 1 is subject to transverse pressure, in polarization-maintaining photonic crystal fiber 1 cross section, produce stress, cause correspondence direction variations in refractive index in polarization-maintaining photonic crystal fiber 1, cause transmission interference spectum phase place in Sagnac ring to change, thereby can know the size of transverse pressure.
The utility model sensor can be according to the singularity of measuring object, the multiaxis pressure transducer that can also be designed to parallel multiple-grid Fibre Optical Sensor and various angles come perception disalignment to pressure.
Claims (4)
1. microclearance interlayer photonic crystal fiber pressure transducer in a pretension unitized construction, it is characterized in that: comprise three polarization-maintaining photonic crystal fibers and base material, described polarization-maintaining photonic crystal fiber is the polarization-maintaining photonic crystal fiber after bending fold repeatedly, the one side of three described polarization-maintaining photonic crystal fibers is bonding with described base material, another side contacts with cushion, and between the center line of adjacent two described polarization-maintaining photonic crystal fibers, angle is 45 °.
2. microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction according to claim 1, it is characterized in that: described polarization-maintaining photonic crystal fiber comprises photonic crystal fibre core, covering and buffering coat, in described buffering coat, be coated with described covering, in described covering, be coated with described photonic crystal fibre core.
3. microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction according to claim 2, is characterized in that: in described covering and described photonic crystal fibre core, be provided with a plurality of through holes.
4. microclearance interlayer photonic crystal fiber pressure transducer in a kind of pretension unitized construction according to claim 1, is characterized in that: described base material adopts polytetrafluoroethylene film substrate, paper substrates or metallic substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586291.8U CN203551177U (en) | 2013-09-22 | 2013-09-22 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586291.8U CN203551177U (en) | 2013-09-22 | 2013-09-22 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551177U true CN203551177U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320586291.8U Withdrawn - After Issue CN203551177U (en) | 2013-09-22 | 2013-09-22 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening composite structure |
Country Status (1)
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| CN (1) | CN203551177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471761A (en) * | 2013-09-22 | 2013-12-25 | 中国工程物理研究院总体工程研究所 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening combined structure |
| CN104482959A (en) * | 2014-11-18 | 2015-04-01 | 华中科技大学 | Optic fiber strain-stress simultaneous measurement device |
-
2013
- 2013-09-22 CN CN201320586291.8U patent/CN203551177U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471761A (en) * | 2013-09-22 | 2013-12-25 | 中国工程物理研究院总体工程研究所 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening combined structure |
| CN103471761B (en) * | 2013-09-22 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Micro-gap interlayer photonic crystal fiber pressure sensor in pre-tightening combined structure |
| CN104482959A (en) * | 2014-11-18 | 2015-04-01 | 华中科技大学 | Optic fiber strain-stress simultaneous measurement device |
| CN104482959B (en) * | 2014-11-18 | 2017-04-19 | 华中科技大学 | Optic fiber strain-stress simultaneous measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |