CN107144373A - One kind exempts from stress grating array temperature sensing optical cable and its method for sensing - Google Patents
One kind exempts from stress grating array temperature sensing optical cable and its method for sensing Download PDFInfo
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- CN107144373A CN107144373A CN201710457903.6A CN201710457903A CN107144373A CN 107144373 A CN107144373 A CN 107144373A CN 201710457903 A CN201710457903 A CN 201710457903A CN 107144373 A CN107144373 A CN 107144373A
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- stress
- optical fiber
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- fixing point
- grating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
Abstract
The present invention provides one kind and exempts from stress grating array temperature sensing optical cable, including stress optical fiber and exempts from stress optical fiber；Stress optical fiber is provided with fixing point, stress optical fiber and exempts from stress optical fiber and is fixed in fixing point；Exempting between adjacent fixing point has grating sensing point on stress optical fiber；The length for exempting from stress optical fiber between adjacent fixing point is more than or equal to the 101% of stress fiber lengths.The present invention exempts from stress optical fiber by way of stress optical fiber is combined setting so that grating array temperature sensing optical cable from extraneous stress influence, the features such as with spatial resolution height, detection range length, many measuring point quantity, insensitive extraneous stress；This cable configuration have it is simple in construction, be easy to prepare the features such as, application of easily accomplishing scale production.
Description
Technical field
Exempt from stress grating array temperature sensing optical cable and its sensing the present invention relates to technical field of optical fiber sensing, more particularly to one kind
Method.
Background technology
Grating array sensor fibre is a kind of new optical fiber sensing method, and this method not only inherits grating sensing precision
The high, advantage that response is fast, and with distributing optical fiber sensing over long distances, Large Copacity the characteristics of, breach existing fiber sensing
Technical bottleneck, be expected to further expand its application field.But, grating is a kind of to temperature and the simultaneously sensitive sensing of stress
Device, axially applies 1g stress for ordinary optic fibre, can both cause the TEMP error of 1 DEG C of grating sensor.Therefore, it is necessary to
There are a kind of new grating array temperature sensing optical cable structure and method for sensing so that even if temperature sensing optical cable is by extraneous stress, its light
Gate sensor is not also influenceed by external force, so that it is guaranteed that the accuracy of temperature survey.
It is substantial amounts of to research and solve the problem of grating sensor temperature is with cross sensitivity is strained, but both for single light
Gate sensor, complicated, technological requirement is high.Such as：Existing patent（Publication number：CN103557959A）Disclose a kind of optical fiber
The making of grating temperature sensor probe and method for packing, in fiber grating grid region packed part, are fixed, the other end using one end
Hanging method eliminates influence of the external stress to sensor thermometric, and this method belongs to single-ended fiber preparation method, is only applicable
In single temperature sensor of making.Existing patent（Publication number：CN101865735A）Disclose a kind of quasi-distributed fiber grating
The encapsulating structure and method of temperature sensor, are sealed using quartz glass capillary to single fiber-optical grating temperature sensor
Dress, is coated using three minor metals for the quasi-distributed fiber grating temperature sensor that multiple fiber gratings are concatenated and encapsulates knot
Structure, this encapsulating structure is complex, and especially cabling process requires higher, is not suitable for preparing over long distances.Existing patent（It is open
Number：CN105301695A）A kind of optical fiber optical grating array sensing optic cable and its application method are disclosed, using optical fiber optical grating array one
Secondary property extrusion molding stranding, cabling process is very convenient, it is easy to carry out long range multiple spot distribution measuring.However, actually laying and surveying
During amount, because being influenceed by extraneous stress and self gravitation, optical fiber optical grating array centre wavelength is often drifted about, and is caused
Larger measurement error.
The content of the invention
The technical problem to be solved in the present invention is：One kind is provided and exempts from stress grating array temperature sensing optical cable and its method for sensing,
Can from extraneous stress influence.
The present invention is that the technical scheme that solution above-mentioned technical problem is taken is：One kind exempts from stress grating array temperature-sensitive light
Cable, it is characterised in that：It includes stress optical fiber and exempts from stress optical fiber；Stress optical fiber be provided with fixing point, stress optical fiber and exempt from should
Power optical fiber is fixed in fixing point；Exempting between adjacent fixing point has grating sensing point on stress optical fiber；Between adjacent fixing point
The length for exempting from stress optical fiber is more than or equal to the 101% of stress fiber lengths.
By such scheme, the length of described fixing point is less than or equal to 20.0mm, and the external diameter of fixing point is less than or equal to
1.5mm。
By such scheme, described fixing point is uv-curable glue.
By such scheme, described grating sensing point is fiber grating.
The described method for sensing for exempting from stress grating array temperature sensing optical cable, it is characterised in that：When optical cable stress tensioning, by
Power optical fiber meets with stresses the strain of generation, and the Fibre Optical Sensor point only sensing temperature exempted from stress optical fiber changes.
Beneficial effects of the present invention are：Exempt from stress optical fiber by way of stress optical fiber is combined setting so that grating
Array temperature sensing optical cable from extraneous stress influence, it is many, insensitive with spatial resolution height, detection range length, measuring point quantity
The features such as extraneous stress；This cable configuration have it is simple in construction, be easy to prepare the features such as, application of easily accomplishing scale production.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
In figure：1 stress optical fiber；2 exempt from stress optical fiber；3 fixing points；4 grating sensing points.
Embodiment
With reference to instantiation and accompanying drawing, the present invention will be further described.
The present invention provides one kind and exempts from stress grating array temperature sensing optical cable, as shown in figure 1, it includes stress optical fiber 1 and exempts to answer
Power optical fiber 2；Stress optical fiber 1 is provided with fixing point 3, stress optical fiber 1 and exempts from stress optical fiber 2 and is fixed in fixing point 3；Adjacent fixing point
Exempting between 3 has grating sensing point 4 on stress optical fiber 2；The length for exempting from stress optical fiber 2 between adjacent fixing point 3 is more than or waited
In the 101% of the length of stress optical fiber 1.It is for example, the length of stress optical fiber 1 between adjacent fixing point 3 is 100cm, then same adjacent
The length for exempting from stress optical fiber 2 between fixing point 3 is more than or equal to 101cm.
In the present embodiment, fixing point 3 is uv-curable glue, and the length of gum spot is less than or equal to 20.0mm, external diameter be less than or
Equal to 1.5mm.The spacing of fixing point 3 can freely be set according to spatial resolution.
Grating sensing point 4 is fiber grating.
The described method for sensing for exempting from stress grating array temperature sensing optical cable is：When optical cable stress tensioning, stress optical fiber is held
The strain produced by stress, exempts from stress optical fiber and is not also produced strain by stress, grating sensing point also will not be because of optical cable stress
Strain variation is produced, the Fibre Optical Sensor point only sensing temperature exempted from stress optical fiber changes.
Grating array sensing optic cable for temperature survey must exempt from the influence that stress variation is produced to temperature survey, and
Cabling process is simple and easy to apply, and the cable machinery intensity after stranding is high, and good reliability could meet the reality of grating array temperature sensing optical cable
The property used.The present invention exactly embodies this point, grating array temperature sensing optical cable from extraneous stress influence, with spatial resolution
The features such as height, detection range length, many measuring point quantity, insensitive extraneous stress；This cable configuration have it is simple in construction, be easy to system
Standby the features such as, application of easily accomplishing scale production.
Above example is merely to illustrate the design philosophy and feature of the present invention, and its object is to make technology in the art
Personnel can understand present disclosure and implement according to this, and protection scope of the present invention is not limited to above-described embodiment.So, it is all according to
The equivalent variations made according to disclosed principle, mentality of designing or modification, within protection scope of the present invention.
Claims (5)
1. one kind exempts from stress grating array temperature sensing optical cable, it is characterised in that：It includes stress optical fiber and exempts from stress optical fiber；Stress light
Fibre is provided with fixing point, stress optical fiber and exempts from stress optical fiber and is fixed in fixing point；Exempting from stress optical fiber between adjacent fixing point
There is grating sensing point；The length for exempting from stress optical fiber between adjacent fixing point is more than or equal to the 101% of stress fiber lengths.
2. according to claim 1 exempt from stress grating array temperature sensing optical cable, it is characterised in that：The length of described fixing point
Less than or equal to 20.0mm, the external diameter of fixing point is less than or equal to 1.5mm.
3. according to claim 1 or 2 exempt from stress grating array temperature sensing optical cable, it is characterised in that：Described fixing point is
Uv-curable glue.
4. according to claim 1 or 2 exempt from stress grating array temperature sensing optical cable, it is characterised in that：Described grating sensing
Point is fiber grating.
5. the method for sensing for exempting from stress grating array temperature sensing optical cable described in claim 1, it is characterised in that：When optical cable stress
During drawing, stress optical fiber meets with stresses the strain of generation, and the Fibre Optical Sensor point only sensing temperature exempted from stress optical fiber changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457903.6A CN107144373A (en) | 2017-06-16 | 2017-06-16 | One kind exempts from stress grating array temperature sensing optical cable and its method for sensing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710457903.6A CN107144373A (en) | 2017-06-16 | 2017-06-16 | One kind exempts from stress grating array temperature sensing optical cable and its method for sensing |
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| CN107144373A true CN107144373A (en) | 2017-09-08 |
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| CN201710457903.6A Pending CN107144373A (en) | 2017-06-16 | 2017-06-16 | One kind exempts from stress grating array temperature sensing optical cable and its method for sensing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037572A (en) * | 2018-01-24 | 2018-05-15 | 苏州专创光电科技有限公司 | A kind of optical cable with temperature and stress sensing |
| CN109085684A (en) * | 2018-10-11 | 2018-12-25 | 宜昌睿传光电技术有限公司 | A kind of skeleton optical fiber and grating sensing temperature optical cable |
| CN109239876A (en) * | 2018-10-11 | 2019-01-18 | 宜昌睿传光电技术有限公司 | A kind of weak optical fiber Bragg grating temperature sensing optical cable |
| CN109300605A (en) * | 2018-10-11 | 2019-02-01 | 三峡大学 | Wisdom cable |
| CN114088241A (en) * | 2021-10-21 | 2022-02-25 | 武汉理工大学 | Weak fiber grating array temperature/vibration composite sensing optical cable and use method thereof |
| CN114674454A (en) * | 2022-03-11 | 2022-06-28 | 武汉理工大学 | Concrete temperature monitoring system and method based on fiber grating array sensing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952964Y (en) * | 2006-06-23 | 2007-09-26 | 周智 | Non-external influence optical fiber grating temperature sensor |
| CN101280690A (en) * | 2008-03-14 | 2008-10-08 | 山东省科学院激光研究所 | Pressure sensor |
| CN102587893A (en) * | 2012-03-13 | 2012-07-18 | 山东省科学院激光研究所 | Optic fiber temperature pressure sensor and probe thereof |
| CN202661198U (en) * | 2012-06-25 | 2013-01-09 | 北京中恩时代科技有限责任公司 | Non-melting-point high-reliability fiber bragg grating temperature sensor link |
| CN202869692U (en) * | 2012-08-31 | 2013-04-10 | 武汉理工光科股份有限公司 | Minitype quartz FBG temperature-sensitive sensor |
| CN106525277A (en) * | 2016-11-01 | 2017-03-22 | 北京航空航天大学 | Unstressed encapsulated fiber grating temperature sensing string |
-
2017
- 2017-06-16 CN CN201710457903.6A patent/CN107144373A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952964Y (en) * | 2006-06-23 | 2007-09-26 | 周智 | Non-external influence optical fiber grating temperature sensor |
| CN101280690A (en) * | 2008-03-14 | 2008-10-08 | 山东省科学院激光研究所 | Pressure sensor |
| CN102587893A (en) * | 2012-03-13 | 2012-07-18 | 山东省科学院激光研究所 | Optic fiber temperature pressure sensor and probe thereof |
| CN202661198U (en) * | 2012-06-25 | 2013-01-09 | 北京中恩时代科技有限责任公司 | Non-melting-point high-reliability fiber bragg grating temperature sensor link |
| CN202869692U (en) * | 2012-08-31 | 2013-04-10 | 武汉理工光科股份有限公司 | Minitype quartz FBG temperature-sensitive sensor |
| CN106525277A (en) * | 2016-11-01 | 2017-03-22 | 北京航空航天大学 | Unstressed encapsulated fiber grating temperature sensing string |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037572A (en) * | 2018-01-24 | 2018-05-15 | 苏州专创光电科技有限公司 | A kind of optical cable with temperature and stress sensing |
| CN109085684A (en) * | 2018-10-11 | 2018-12-25 | 宜昌睿传光电技术有限公司 | A kind of skeleton optical fiber and grating sensing temperature optical cable |
| CN109239876A (en) * | 2018-10-11 | 2019-01-18 | 宜昌睿传光电技术有限公司 | A kind of weak optical fiber Bragg grating temperature sensing optical cable |
| CN109300605A (en) * | 2018-10-11 | 2019-02-01 | 三峡大学 | Wisdom cable |
| CN114088241A (en) * | 2021-10-21 | 2022-02-25 | 武汉理工大学 | Weak fiber grating array temperature/vibration composite sensing optical cable and use method thereof |
| CN114674454A (en) * | 2022-03-11 | 2022-06-28 | 武汉理工大学 | Concrete temperature monitoring system and method based on fiber grating array sensing |
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Application publication date: 20170908 |