CN202757633U - Packaging structure for FBG sensor - Google Patents
Packaging structure for FBG sensor Download PDFInfo
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- CN202757633U CN202757633U CN 201220439145 CN201220439145U CN202757633U CN 202757633 U CN202757633 U CN 202757633U CN 201220439145 CN201220439145 CN 201220439145 CN 201220439145 U CN201220439145 U CN 201220439145U CN 202757633 U CN202757633 U CN 202757633U
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- fbg sensor
- metal joint
- fbg
- optical cable
- packaging
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Abstract
Disclosed is a packaging structure for an FBG sensor, comprising an FBG sensor, a metal joint, a fine armoured optical cable, and a sealant, wherein the FBG sensor is arranged at the central section of the metal joint; two ends of the metal joint are filled with the sealant to package the FBG sensor in the metal joint; and the tail fibers at two ends of the FBG sensor are fixedly connected to the interior of the fine armoured optical cable. The packaging structure of the utility model can substantially cut the cost, and greatly improve the wear resistance, the age proof performance, and other properties of the FBG sensor. Moreover, the packaging structure does not affect the linearity, repeatability, and other basic properties of the FBG sensor.
Description
Technical field
The utility model relates to the optical fiber grating sensing field, relates in particular to a kind of FBG packaging of the fiber grating sensors structure.
Background technology
The FBG sensor, to belong to FBG(Fiber Bragg Grating Fiber Bragg Grating FBG) sensor a kind of, sensing process based on fiber grating is by extraneous physical parameter heat transfer agent to be obtained in the modulation of optical fiber Bragg wavelength, is a kind of wavelength-modulated type optical fiber FBG sensor.
In optical fiber FBG sensor field, the application prospect of fiber grating FBG sensor is very wide.Because fiber grating FBG sensor has anti-electromagnetic interference (EMI), size little (the standard bare fibre is 125um), lightweight, temperature tolerance good (the working temperature upper limit can reach 400 ℃-600 ℃), multiplexing capacity is strong, long transmission distance (the FBG sensor can reach several kilometers to demodulating end), corrosion-resistant, high sensitivity, passive device, the advantages such as easy deformation, as far back as 1988 just successfully in aviation, as effective Dynamic Non-Destruction Measurement, fiber grating FBG sensor also can be applicable to chemistry medicine simultaneously in the space industry, material industry, hydraulic and electric engineering, boats and ships, the every field such as colliery.Fiber grating is to utilize the photosensitivity in the optical fiber to make, the very responsive fragility of fiber bragg grating device itself, so its packaging technology just seems and is even more important.
The FBG sensor of traditional armored optical cable encapsulation all adopts the fixing labyrinth that waits that is threaded, and the FBG sensor bulk is large, and holistic cost is higher.
The utility model content
The technical problems to be solved in the utility model is to adopt complicated structure for FBG packaging of the fiber grating sensors in the prior art, so that the FBG sensor bulk is large, and the defective that holistic cost is higher, provide a kind of encapsulating structure simple, reduce the FBG packaging of the fiber grating sensors structure of encapsulation volume and reduction cost.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of FBG packaging of the fiber grating sensors structure is provided, comprise FBG sensor, metal joint, thin armored optical cable and fluid sealant, the FBG sensor places the middle part of metal joint, fill with two ends of metal joint fluid sealant, with the FBG sensor package in metal joint, be fixedly connected with thin armored optical cable in two ends of metal joint, the tail optical fiber at FBG sensor two ends passes fluid sealant and thin armored optical cable.
In the FBG packaging of the fiber grating sensors structure described in the utility model, the diameter of the middle part of metal joint is less than the diameter of two ends.
In the FBG packaging of the fiber grating sensors structure described in the utility model, thin armored optical cable comprises from inside to outside successively: the tight sleeve pipe of PE, metal threaded pipe, metal net and PE oversheath.
Use the utility model; have following beneficial effect: the utility model encapsulates by the FBG sensor is penetrated in the metal joint; and by thin armored optical cable the tail optical fiber at FBG sensor two ends is protected; decrease cost; greatly improved simultaneously the wearing quality of FBG sensor, the unfailing performance such as anti-aging, and on key propertys such as the linearity of FBG sensor and repeatability without impact.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the schematic diagram of the utility model embodiment F BG packaging of the fiber grating sensors structure.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
FBG packaging of the fiber grating sensors structure comprises FBG sensor 1, metal joint 2, thin armored optical cable 4 and fluid sealant 3 in preferred embodiment of the present utility model; FBG sensor 1 places the middle part of metal joint 2; fill with two ends of metal joint 2 fluid sealant 3; FBG sensor 1 is encapsulated in the metal joint 2; be fixedly connected with thin armored optical cable 4 in two ends of metal joint 2; the tail optical fiber at FBG sensor 1 two ends passes fluid sealant 3 and thin armored optical cable 4, protects by the tail optical fiber of 4 pairs of FBG sensors 1 of thin armored optical cable.
In an embodiment of the present utility model, fluid sealant 3 is two component sealing gum.
Among the utility model embodiment, as shown in Figure 1, the diameter of the middle part of metal joint 2 is less than the diameter of two ends.Can be according to the diameter of two ends of the optic cable design metal joint 2 of different size, so that metal joint 2 can adapt to the optical cable of different size.
Further, among the utility model embodiment, thin armored optical cable 4 comprises from inside to outside successively: the tight sleeve pipe of PE, metal threaded pipe, metal net and PE oversheath.
In the utility model preferred embodiment, the packaging technology of FBG packaging of the fiber grating sensors structure mainly comprises: allow FBG sensor 1 be in the middle part of metal joint 2; Then pour into the fluid sealant 3 of a small amount of two components at the two ends of metal joint 2, FBG sensor 1 is encapsulated; Then the tail optical fiber at FBG sensor 1 two ends is inserted in thin armored optical cable 4 and protects, thin armored optical cable 4 comprises from inside to outside successively: the tight sleeve pipe of PE, metal threaded pipe, metal net and PE oversheath; With hydraulic tongs the metal joint 2 of special substance and structure is carried out the crimping encapsulation at last, fixing thin armored optical cable 4.FBG packaging of the fiber grating sensors structure of the present utility model can be carried out second protection to the FBG sensor.
FBG packaging of the fiber grating sensors structure of the present utility model is compared with the encapsulating structure that has common internal and external threads design now, at cost significantly decline has been arranged, on volume, also relatively reduce simultaneously a lot, the metal joint of special substance and structure can guarantee the optical cable of different size and docking of FBG sensor, greatly expanded the range of application of FBG sensor, and on key propertys such as the linearity of FBG sensor itself and repeatability without impact.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (3)
1. FBG packaging of the fiber grating sensors structure, it is characterized in that, comprise FBG sensor, metal joint, thin armored optical cable and fluid sealant, the FBG sensor places the middle part of metal joint, fill with two ends of metal joint fluid sealant, the FBG sensor package in metal joint, is fixedly connected with thin armored optical cable in two ends of metal joint, and the tail optical fiber at FBG sensor two ends passes fluid sealant and thin armored optical cable.
2. FBG packaging of the fiber grating sensors structure according to claim 1 is characterized in that, the diameter of the middle part of metal joint is less than the diameter of two ends.
3. FBG packaging of the fiber grating sensors structure according to claim 1 is characterized in that, thin armored optical cable comprises from inside to outside successively: the tight sleeve pipe of PE, metal threaded pipe, metal net and PE oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439145 CN202757633U (en) | 2012-08-31 | 2012-08-31 | Packaging structure for FBG sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439145 CN202757633U (en) | 2012-08-31 | 2012-08-31 | Packaging structure for FBG sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757633U true CN202757633U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220439145 Expired - Fee Related CN202757633U (en) | 2012-08-31 | 2012-08-31 | Packaging structure for FBG sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202757633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413886A (en) * | 2018-01-23 | 2018-08-17 | 山西省交通科学研究院 | A kind of FBG encapsulating structures that can monitor soil body micro-strain and packaging method |
-
2012
- 2012-08-31 CN CN 201220439145 patent/CN202757633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413886A (en) * | 2018-01-23 | 2018-08-17 | 山西省交通科学研究院 | A kind of FBG encapsulating structures that can monitor soil body micro-strain and packaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20180831 |