CN204313802U - A kind of strain transducer based on temperature compensation fiber grating - Google Patents
A kind of strain transducer based on temperature compensation fiber grating Download PDFInfo
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- CN204313802U CN204313802U CN201420766928.6U CN201420766928U CN204313802U CN 204313802 U CN204313802 U CN 204313802U CN 201420766928 U CN201420766928 U CN 201420766928U CN 204313802 U CN204313802 U CN 204313802U
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- fiber grating
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- optical fiber
- temperature compensation
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- 239000000835 fiber Substances 0.000 title claims abstract description 58
- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 210000004907 gland Anatomy 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- -1 holder B Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The utility model discloses a kind of strain transducer based on temperature compensation fiber grating, relate to fiber optic sensor technology field, this strain transducer comprises armored optical cable, holder A, optical fiber loose tube, fiber grating, cementing agent, holder B, optical fiber gland B, over cap, optical fiber gland A, this temperature compensation fiber Bragg grating strain sensor is that fiber grating is fixed in the sipes of holder A and holder B, two ends tail optical fiber is separately fixed on holder A and holder B, make holder A and holder B with the strain transfer of testee on fiber grating, there is the change of corresponding strain in raster center wavelength, fiber grating not temperature influence simultaneously, can monitor strain amount really and accurately.
Description
Technical field
The utility model relates to fiber optic sensor technology field, particularly a kind of strain transducer based on temperature compensation fiber grating.
Background technology
Large scale structure is as building, and bridge, the facilities such as derrick are chronically exposed to external environment clock, or are easily subject to rugged surroundings and the aging damage of artificial impact appearance.Strain is the important indicator ensureing engineering structure safety, and people assess the health status of an engineering structure usually by the strain of detection architecture.Structure is subject to the impact of external forces, can produce certain strain.If suffered external forces is excessive, structure can be made to crack, strain equivalent damage, further develops and can cause structural break, collapse, and threatens the safety of engineering.Therefore carry out for a long time to the strain of engineering structure, in real time, dynamically, stable detection has very important significance.
Fiber grating pair strain sensitivity very, is widely used in sensory field, is particularly applied to strain, temperature, manosonication, acceleration, the isoparametric accurate distribution measuring in magnetic field.And the measurement of strain parameter is wherein several one of application widely.It is widely used in building structure as tunnel, steel tower, genuine, electric power, the fields such as oil well.But how the centre wavelength of existing fiber Bragg grating strain sensor, all to temperature and strain sensitive, eliminates the impact of temperature when monitor strain, improve the accuracy of strain measurement, current most fiber Bragg grating strain sensor is difficult to overcome this problem.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of strain transducer based on temperature compensation fiber grating, by application armored optical cable and optical fiber loose tube, to solve the above-mentioned multinomial defect caused in prior art.
For achieving the above object, the utility model provides following technical scheme: a kind of strain transducer based on temperature compensation fiber grating, comprise armored optical cable, holder A, optical fiber loose tube, fiber grating, cementing agent, holder B, optical fiber gland B, over cap, optical fiber gland A, it is characterized in that: described strain transducer comprises fiber grating, fiber grating is fixed in the sipes of holder A and holder B by cementing agent, holder B has rectangle chute, optical fiber loose tube is socketed on armored optical cable, armored optical cable is separately fixed at holder A with on holder B by optical fiber gland A, and optical fiber gland A and holder A is connected by screw fixing, optical fiber gland B and holder B is connected by screw fixing, fiber grating two ends armored optical cable is fixed on holder A with in the sipes of holder B, over cap realizes Hard link by high-strength screw and holder B.
Preferably, described fiber grating is made up of the negative temperature coefficient material corresponding with grating material and optical fiber Bragg grating encapsulation.
Preferably, described fiber grating is the even long period fiber grating of temperature compensation.
Preferably, described armored optical cable is the indoor armored optical cable of single core single mode.
Preferably, described optical fiber loose tube is manufactured by polypropylene.
The beneficial effect of above technical scheme is adopted to be: this temperature compensation fiber Bragg grating strain sensor is that fiber grating is fixed in the sipes of holder A and holder B, two ends tail optical fiber is separately fixed on holder A and holder B, make holder A and holder B with the strain transfer of testee on fiber grating, there is the change of corresponding strain in raster center wavelength, simultaneously fiber grating not temperature influence, can monitor strain amount really and accurately.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of a kind of strain transducer based on temperature compensation fiber grating of the utility model;
Fig. 2 is the structural representation of a kind of strain transducer based on temperature compensation fiber grating of the utility model.
Wherein, 1--armored optical cable, 2--holder A, 3--optical fiber loose tube, 4--fiber grating, 5--cementing agent, 6--holder B, 7--optical fiber gland B, 8--over cap, 9--optical fiber gland A.
Embodiment
The preferred implementation of a kind of strain transducer based on temperature compensation fiber grating of the utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 shows the embodiment of a kind of strain transducer based on temperature compensation fiber grating of the utility model: should based on the strain transducer of temperature compensation fiber grating, comprise armored optical cable 1, holder A2, optical fiber loose tube 3, fiber grating 4, cementing agent 5, holder B6, optical fiber gland B7, over cap 8, optical fiber gland A9, it is characterized in that: described strain transducer comprises fiber grating 4, fiber grating 4 is fixed in the sipes of holder A2 and holder B6 by cementing agent 5, holder B6 has rectangle chute, optical fiber loose tube 3 is socketed on armored optical cable 1, armored optical cable 1 is separately fixed at holder A2 with on holder B6 by optical fiber gland A9, and optical fiber gland A9 and holder A2 is connected by screw fixing, optical fiber gland B7 and holder B6 is connected by screw fixing, fiber grating 4 two ends armored optical cable 1 is fixed on holder A2 with in the sipes of holder B6, over cap 8 realizes Hard link by high-strength screw and holder B6.
Holder A2 and holder B6 contacts with each other but does not form entirety, can move to axial, described two ends armored optical cable 1 joint is stretched out by sensor two ends, can be connected with external fiber, and optical fiber gland A 9 and optical fiber gland B7 makes fiber grating 4 tail optical fiber be fixed on holder.Described over cap 8 is protected strain transducer not receive and is laterally destroyed and impact.Holder A2 is put into the chute of holder B6, it is made to be free to slide, fiber grating 4 tiling is put into the sipes of holder A2 and holder B6, cementing agent 5 on the location point at fiber grating 4 two ends, after to be bonded dose 5 solidification, the two ends tail optical fiber of fiber grating 4 is inserted in Loose tube 3 successively, armored optical cable 1, with optical fiber gland A9 and optical fiber gland B7, the two ends of armored optical cable 1 is separately fixed on holder A2 and holder B6 after regulating grating length; Regulate fiber position, guarantee that optical fiber is in correct status, then with screw, over cap 8 is connected with holder B6, coats protection fluid sealant; Fiber grating 4 strain transducer has encapsulated, and is fixed on testee, completes the installation of fiber grating 4 strain transducer by sensor by the screw of holder A2 and holder B6.In time there is corresponding strain in testee, by holder A and holder B by corresponding strain transfer on fiber grating 4, by the dependent variable of the change of raster center wavelength reflection testee.
Above is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. the strain transducer based on temperature compensation fiber grating, comprise armored optical cable, holder A, optical fiber loose tube, fiber grating, cementing agent, holder B, optical fiber gland B, over cap, optical fiber gland A, it is characterized in that: described strain transducer comprises fiber grating, fiber grating is fixed in the sipes of holder A and holder B by cementing agent, holder B has rectangle chute, optical fiber loose tube is socketed on armored optical cable, armored optical cable is separately fixed at holder A with on holder B by optical fiber gland A, and optical fiber gland A and holder A is connected by screw fixing, optical fiber gland B and holder B is connected by screw fixing, fiber grating two ends armored optical cable is fixed on holder A with in the sipes of holder B, over cap realizes Hard link by high-strength screw and holder B.
2. the strain transducer based on temperature compensation fiber grating according to claim 1, is characterized in that: described temperature compensation fiber grating is made up of the negative temperature coefficient material corresponding with grating material and optical fiber Bragg grating encapsulation.
3. the strain transducer based on temperature compensation fiber grating according to claim 1, is characterized in that: described fiber grating is the even long period fiber grating of temperature compensation.
4. the strain transducer based on temperature compensation fiber grating according to claim 1, is characterized in that: described armored optical cable is the indoor armored optical cable of single core single mode.
5. the strain transducer based on temperature compensation fiber grating according to claim 1, is characterized in that: described optical fiber loose tube is manufactured by polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766928.6U CN204313802U (en) | 2014-12-09 | 2014-12-09 | A kind of strain transducer based on temperature compensation fiber grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766928.6U CN204313802U (en) | 2014-12-09 | 2014-12-09 | A kind of strain transducer based on temperature compensation fiber grating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204313802U true CN204313802U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766928.6U Expired - Fee Related CN204313802U (en) | 2014-12-09 | 2014-12-09 | A kind of strain transducer based on temperature compensation fiber grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204313802U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157591A (en) * | 2015-07-10 | 2015-12-16 | 同济大学 | High-sensitivity high-resolution high-precision fiber Bragg grating array strain sensor |
| CN108680289A (en) * | 2018-05-24 | 2018-10-19 | 大连理工大学 | A kind of method that polyurethane encapsulation fiber grating prepares sensor |
| CN110057309A (en) * | 2019-05-21 | 2019-07-26 | 衢州学院 | A kind of fiber Bragg grating strain sensor and its installing/dismounting method suitable for various working |
| CN110440839A (en) * | 2019-08-11 | 2019-11-12 | 蚌埠学院 | A kind of pre- daraf(reciprocal of farad) of fiber-optic grating sensor prepackage armored optical cable set |
| CN112945119A (en) * | 2021-02-05 | 2021-06-11 | 衢州学院 | Fiber grating strain sensor for composite material and packaging method thereof |
| CN113532724A (en) * | 2021-08-26 | 2021-10-22 | 中国核动力研究设计院 | High-temperature and high-pressure resistant optical fiber force sensor |
-
2014
- 2014-12-09 CN CN201420766928.6U patent/CN204313802U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157591A (en) * | 2015-07-10 | 2015-12-16 | 同济大学 | High-sensitivity high-resolution high-precision fiber Bragg grating array strain sensor |
| CN105157591B (en) * | 2015-07-10 | 2018-06-05 | 同济大学 | A kind of Fiber Bragg Grating FBG array strain transducer of high sensitivity High Resolution |
| CN108680289A (en) * | 2018-05-24 | 2018-10-19 | 大连理工大学 | A kind of method that polyurethane encapsulation fiber grating prepares sensor |
| CN110057309A (en) * | 2019-05-21 | 2019-07-26 | 衢州学院 | A kind of fiber Bragg grating strain sensor and its installing/dismounting method suitable for various working |
| CN110057309B (en) * | 2019-05-21 | 2024-02-09 | 衢州学院 | Method for installing and detaching fiber bragg grating strain sensor applicable to various working conditions |
| CN110440839A (en) * | 2019-08-11 | 2019-11-12 | 蚌埠学院 | A kind of pre- daraf(reciprocal of farad) of fiber-optic grating sensor prepackage armored optical cable set |
| CN112945119A (en) * | 2021-02-05 | 2021-06-11 | 衢州学院 | Fiber grating strain sensor for composite material and packaging method thereof |
| CN113532724A (en) * | 2021-08-26 | 2021-10-22 | 中国核动力研究设计院 | High-temperature and high-pressure resistant optical fiber force sensor |
| CN113532724B (en) * | 2021-08-26 | 2023-08-18 | 中国核动力研究设计院 | High-temperature-resistant high-pressure optical fiber sensor |
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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: 20150506 Termination date: 20171209 |