CN108489415A - A kind of fibre optic strain sensor with temperature self-compensation - Google Patents
A kind of fibre optic strain sensor with temperature self-compensation Download PDFInfo
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- CN108489415A CN108489415A CN201810566261.8A CN201810566261A CN108489415A CN 108489415 A CN108489415 A CN 108489415A CN 201810566261 A CN201810566261 A CN 201810566261A CN 108489415 A CN108489415 A CN 108489415A
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- sliding block
- grating
- cover board
- strip
- temperature
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- 239000000835 fiber Substances 0.000 title claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 239000013307 optical fiber Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses a kind of fibre optic strain sensors with temperature self-compensation, the sensor includes fiber grating, strip sliding block and cover board, strain measurement grating and temperature-compensating grating are machined on fiber grating, the bottom of sliding block is equipped with fixed seat, sliding block is equipped with the straight groove of strip, shaggy anchor slot is equipped in the straight groove of strip, 2 sliding blocks are a pair, cover board is covered on sliding block, 2 sliding blocks are located at the both ends of cover board, the strip fixed hole and screw hole for being fixedly connected with cover board and sliding block are respectively provided on cover board and sliding block, fiber grating is layed in the straight groove of strip, strain measurement grating is between sliding block, temperature-compensating grating is located at the centre of the light anchor slot of any strip sliding block.The present invention may be implemented the temperature self-compensation function of strain transducer, and strain sensitivity and temperature control are obtained for different degrees of raising, high certainty of measurement, and engineering practicability is good.
Description
Technical field
The present invention relates to the civil engineerings such as building, bridge, tunnel and road inspection (prison) survey technology field, specifically one
Fibre optic strain sensor of the kind with temperature self-compensation.
Background technology
Important component of (prison) survey technology as science of bridge building field is examined, is always the heat of domestic and foreign scholars' concern
Point.In recent years, as the technologies such as sensing, computer, information processing develop, inspection (prison) survey technology of engineering structure also obtains
Significant progress.Since the nineties in last century, structural health monitoring technology conduct raising large civil structure security performance,
A kind of important technology of performance and ability of preventing and reducing natural disasters, has caused worldwide extensive concern.The technology is in Europe
Beautiful some developed countries research is wider, and is used widely in Practical Project.Currently, the monitoring structural health conditions skill in China
Art is still in research and trial period.Wherein, sensing technology is the hardware core of structural healthy monitoring system, currently used for soil
The sensor of wood engineering monitoring structural health conditions is resistance strain gage, sinusoid sensor etc. mostly, and such technology measures long-term steady
It is qualitative it is low, durability is poor, is disturbed that influence is big, be suitble to the detection of the small-sized homogeneous textures such as machinery, large-scale building work cannot be met
The health monitoring demand of journey structure.
Chinese patent literature CN106482659A discloses a kind of long gauge length strain transducer of high-precision, the Fibre Optical Sensor
Have many advantages, such as that good stability, high certainty of measurement, anti-electromagnetic interference capability are strong, corrosion-resistant, small, strong to environment usability,
Extensive use is obtained in fields such as civil engineering, aerospace, petrochemical industry, electric power, medical treatment, shipping industrys.And in practical work
In Cheng Yingyong, since grating is all more sensitive to strain and temperature, this just brings temperature to practical measurement and strain intersection is quick
Sense problem, therefore the influence for eliminating temperature is to strain the basis accurately measured.Currently used temperature-compensation method mostly uses greatly
For 1 temperature sensor of more installations as reference, the measured value pair of strain sensors based on temperature sensor carries out temperature in structure
Degree compensation, and since practical bridge structure is usually on a grand scale, there are the distribution in temperature field, such temperature to mend for different location
It is low to repay precision, error is big, is unfavorable for promoting and applying.Although some fiber-optic grating sensors only there are one fiber grating feelings
Temperature self-compensation is realized under condition, but sensor itself is complicated, measurement accuracy is poor, and compensation effect remains to be discussed.This Shen
It please be exactly the further improvement on the product of Chinese patent literature CN106482659A.
Invention content
The purpose of the present invention is the deficiencies in for the above-mentioned prior art, provide a kind of optical fiber with temperature self-compensation
Strain transducer.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of fibre optic strain sensor with temperature self-compensation, the sensor include fiber grating, strip sliding block and
Cover board, which is characterized in that strain measurement grating and temperature-compensating grating, the bottom of the sliding block are machined on the fiber grating
Portion is equipped with fixed seat, and the sliding block is equipped with the straight groove of strip, is equipped with shaggy anchor slot in the straight groove of strip, and 2
A sliding block is a pair, and the cover board is covered on the sliding block, and 2 sliding blocks are located at the both ends of the cover board,
The strip fixed hole and screw hole for being fixedly connected with the cover board and sliding block are respectively provided on the cover board and sliding block, it is described
Fiber grating is layed in the straight groove of strip, and the strain measurement grating is between the sliding block, the temperature-compensating grating
Positioned at the centre of the light anchor slot of any strip sliding block.
In the further design scheme of the present invention, the centre wavelength of above-mentioned strain measurement grating and temperature-compensating grating is not
It is identical.
In the further design scheme of the present invention, the optical fiber being fixed in the anchor slot is to have divested protective layer or painting
The optical fiber of coating.
In the further design scheme of the present invention, the both sides of above-mentioned cover board are additionally provided with the side block for covering the sliding block side
Plate, the side shield and the sliding block side are respectively equipped with matched guide rail and sliding slot, allow the sliding block in the lid
It is slided on plate.
In the further design scheme of the present invention, which further includes protection bottom plate, and the protection bottom plate installation is fixed
The bottom surface of the cover board between the sliding block.
In the further design scheme of the present invention, it is soft that the fiber grating outside the anchor slot is arranged with protection
Pipe.It can be plastic tube, four fluorine tube, capillary tubing etc. to protect hose, and effect is protected to optical fiber or grating, and protection is soft
Pipe can effectively completely cut off the influence to grating such as light, water, gas.
Further include mounting seat in the further design scheme of the present invention, the mounting seat has 2, can pass through bolt
It is fixedly connected respectively with the fixed seat bottom of 2 sliding blocks.
Above-mentioned strip sliding block, cover board, protection bottom plate and mounting seat are metalwork, alloy components, plastic part or other materials
Matter part.In view of durability and portability, above-mentioned strip sliding block, cover board, protection bottom plate and mounting seat are alloy aviation
Aluminum material is made, best with alloy aviation aluminium.
The present invention has advantageous effect following prominent：
Compared with ordinary optic fibre grating strain transducer and temperature-compensation method, the present invention can realize temperature self-compensation,
And strain is higher with temperature sensitive coefficient.The firmness of stability, durability and the sensor of the present invention itself is high, peace
Dress and convenient disassembly, can reuse sensor, can be used for detection and the long term monitoring of engineering structure, be suitble to
It is promoted and applied in engineering.
Description of the drawings
Fig. 1 is fiber grating scheme of installation in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the fibre optic strain sensor with temperature self-compensation in the embodiment of the present invention；
Fig. 3 is strip sliding block front view in the embodiment of the present invention；
Fig. 4 is strip sliding block left view in the embodiment of the present invention；
Fig. 5 is cover plate front view of the embodiment of the present invention；
Fig. 6 is cover plate left view of the embodiment of the present invention；
Fig. 7 is the impact of performance comparison diagram of the fibre optic strain sensor with temperature self-compensation in the embodiment of the present invention；
In figure, 1- fiber gratings, 2- strip sliding blocks, 3- cover boards, 4- strain measurement gratings, 5- fixed seats, 6- anchorings
Slot, 7- strip fixed holes, 8- screw holes, 9- side shields, 10- guide rails, 11- sliding slots, 12- mounting seats, the straight groove of 13- strips,
14- temperature-compensating gratings.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1~Fig. 6, the fibre optic strain sensor with temperature self-compensation in the present invention, which includes light
Fine grating 1, strip sliding block 2 and cover board 3, protection bottom plate, mounting seat 12, strip sliding block 2, cover board 3, protection bottom plate and
Mounting seat 12 is made of alloy aircraft aluminum material.Strain measurement grating 4 and temperature-compensating are machined on the fiber grating 1
The centre wavelength of grating 14, strain measurement grating 4 and temperature-compensating grating 14 differs.The bottom of the sliding block 2, which is equipped with, to be fixed
Seat 5, the sliding block 2 are equipped with the straight groove 13 of strip, and shaggy anchor slot 6,2 is equipped in the straight groove of the strip 13
The sliding block 2 is a pair, and the cover board 3 is covered on the sliding block 2, and 2 sliding blocks 2 are located at the two of the cover board 3
It holds, the strip fixed hole 7 and spiral shell for being fixedly connected with the cover board 3 and sliding block 2 is respectively provided on the cover board 3 and sliding block 2
Hole 8, the fiber grating 1 are layed in the straight groove of strip 13, and the strain measurement grating 4 is between the sliding block 2, institute
State the centre that temperature-compensating grating 14 is located at the light anchor slot 6 of any strip sliding block 2.Optical fiber in the anchor slot 6
To have divested the optical fiber of protective layer or coat.The both sides of the cover board 3 are additionally provided with the side shield for covering 2 side of sliding block
9, the side shield 9 and 2 side of the sliding block are respectively equipped with matched guide rail 10 and sliding slot 11, and the sliding block 2 is allow to exist
It is slided on the cover board 3.The protection bottom plate is fixed on the bottom surface of the cover board 3 between the sliding block 2.Positioned at institute
The fiber grating 1 stated outside anchor slot 6 is arranged with protection hose.The mounting seat 12 has 2, can be distinguished by bolt
It is fixedly connected with 5 bottom of fixed seat of 2 sliding blocks 2.
The making step of fibre optic strain sensor with temperature self-compensation is：
Two sliding blocks 2 are kept same level to be symmetrically placed on making platform by step 1, are adjusted gauge length, are then being hung down
Histogram is fixed to it.
Step 2, the position that fiber grating 1 is in anchor slot 6 carry out divesting for one section of coat, then strain survey
Label well make protection hose, will protect Hose Jacket by anchoring distance, the thin plastic flexible pipe of selection certain length centered on measuring grating 4
On optical fiber, makes 4 sections of centre positions for being located at protection hose of strain measurement grating of fiber grating 1, then will protect hose two
End is positioned in the straight groove of strip 13 of two 2 ends of sliding block, and 4 sections of strain measurement grating is placed among two sliding blocks 2, temperature
Null grating 14 is located at the centre of any sliding block 2, and the optical fiber for having divested coat is placed in anchor slot 6, and applies one to optical fiber
Fixed pre- tensioning, then starts to carry out gluing into anchor slot 6, optical fiber is fixed in anchor slot 6.
Step 3, after the adhesive curing in step 2, the optical fiber two 2 outer ends of sliding block is arranged optical cable protective tube, light respectively
Cable protection pipe is placed in the groove of 2 outer end of sliding block, and then optical cable protective tube is fixed in groove with glue.
Step 4, after adhesive curing in step 3, the guide rail 10 cover board 3 is corresponding with the groove of 2 side of sliding block, by cover board 3
Sliding block 2 is slided into, is then fixed sliding block 2 and cover board 3 with bolt.
The bottom of step 5, the cover board 3 being fixed on bottom plate bolt or glue between sliding block 2, to protect fiber grating 1.
When measuring, fixed seat 5 and the mounting seat 12 of two sliding blocks 2 of sensor are fixed with bolt, will be installed
Pedestal 12 is fixed in the structure for needing to measure, and is then unclamped the bolt of connecting cover plate 3 and any sliding block 2, is made sliding block
2 can be free to slide in guide rail 10.In this way cover board 3 will not pair of strain sensors measurement generate hinder or influence.
After measurement, the fixed seat that comes loose 5 and the bolt of mounting seat 12 can remove strain transducer, easily tear open
The reusing of sensor can be improved in the mode of unloading.If long term monitoring, then removal sensor is not had to.
Temperature compensation self-compensating function may be implemented in sensor of the invention, and temperature and the coefficient of strain are higher, strains sensitivity
It can also be realized by changing optical fiber anchoring length in sliding block 2.Referring to attached drawing 1, the temperature self-compensation method of sensor of the invention
And theoretical calculation is as follows：
If the gauge length of sensor is L, optical fiber anchoring length is L in sliding block 21, the elasticity modulus of sliding block 2 is E1,Cross section
Product is A1；Optical fiber suspended length L2, optical fiber elasticity modulus is E2, cross-sectional area A2, fiber optic protection hose elasticity modulus is
E3, cross-sectional area A3.For the high-precision sensor with temperature self-compensation of the present invention, it is assumed that gauge length region sensed answers
Become ε
Identical homogeneous material ε is identical everywhere, then intermediate fibres grating 1L2The strain of section is：
The high-precision optical fiber sensor of the present invention：
Because ε is identical, Δ L '=Δ L
According to the mechanics of materials：The Δs of Δ L '=2 L '1+ΔL′2Or the Δs of Δ L '=2 L '1+ΔL′3
For 2 elongation of sliding block,For optical fiber L2Segments elongate amount,For tubule
Elongation.
Because of Δ L '2=ΔL′3, thenOrIt is lower that tubule of the present invention chooses bullet mould
Plastic tube, then E1A1>>E2A2(E3A3), i.e. Δ L '1<<ΔL′2, it is approximately considered Δ L '=Δ L ' 2.Therefore, in force acting on transducer
In the case of, strain can be approximately considered and all concentrate on L2Section, and since strain measurement grating 4 is anchored among sliding block 2, then
Substantially not strained effect, wavelength variation values are affected by temperature completely.
Then in practical application, formula can be passed throughTo realize temperature
Self-compensating function.
In formula, ε is measuring point strain value, and λ surveys the wavelength value (nm) measured for strain measurement grating 4, and λ 0 is strain measurement light
Wavelength value (nm) of the grid 4 at a temperature of T0, λ T survey the wavelength value (nm) measured for grating 5, and λ T0 are grating 5 at a temperature of T0
Wavelength value (nm), K ε T are the temperature coefficient of strain measurement grating 4, and KT is the temperature coefficient of grating 5, and K ε are strain measurement grating
4 coefficient of strain.
In order to verify the science and practicability of temperature-compensation method of the present invention, in laboratory to temperature-compensating grating
14 temperature coefficient carries out staking-out work, and 1 naked grating is chosen in experiment and 3 sensor of the invention are compared, as a result such as
Shown in Fig. 7.The experimental results showed that temperature often increases 5 DEG C, the wavelength change of naked grating is 50pm, therefore its temperature coefficient is
0.1 DEG C/pm, the temperature control coefficient of the temperature-compensating grating 14 of inventive sensor is 0.35 DEG C/pm or so, is much larger than
Naked grating, and the linearity is good, therefore there is higher precision and smaller measurement error in practical applications.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (7)
1. a kind of fibre optic strain sensor with temperature self-compensation, the sensor include fiber grating（1）, strip sliding block
（2）And cover board（3）, which is characterized in that the fiber grating（1）On be machined with strain measurement grating（4）With temperature-compensating grating
（14）, the sliding block（2）Bottom be equipped with fixed seat（5）, the sliding block（2）It is equipped with the straight groove of strip（13）, the strip
Straight groove（13）In be equipped with shaggy anchor slot（6）, 2 sliding blocks（2）For a pair, the cover board（3）It is covered in institute
State sliding block（2）On, 2 sliding blocks（2）It is located at the cover board（3）Both ends, the cover board（3）And sliding block（2）Upper point
It She You not be for being fixedly connected with the cover board（3）And sliding block（2）Strip fixed hole（7）And screw hole（8）, the fiber grating
（1）It is layed in the straight groove of strip（13）It is interior, the strain measurement grating（4）Positioned at the sliding block（2）Between, the temperature-compensating
Grating（14）Positioned at any strip sliding block（2）Light anchor slot（6）Centre.
2. the fibre optic strain sensor according to claim 1 with temperature self-compensation, which is characterized in that the strain is surveyed
Measure grating（4）With temperature-compensating grating（14）Centre wavelength differ.
3. the fibre optic strain sensor according to claim 1 with temperature self-compensation, which is characterized in that be fixed on described
Anchor slot（6）In optical fiber be the optical fiber for having divested protective layer or coat.
4. the fibre optic strain sensor according to claim 1 with temperature self-compensation, which is characterized in that the cover board
（3）Both sides be additionally provided with the covering sliding block（2）The side shield of side（9）, the side shield（9）With the sliding block（2）Side
It is respectively equipped with matched guide rail（10）And sliding slot（11）, make the sliding block（2）It can be in the cover board（3）Upper sliding.
5. according to any fibre optic strain sensors with temperature self-compensation of claim 1-4, which is characterized in that the biography
Sensor further includes protection bottom plate, and the protection bottom plate is fixed on the sliding block（2）Between the cover board（3）Bottom surface.
6. according to any fibre optic strain sensors with temperature self-compensation of claim 1-4, which is characterized in that be located at
The anchor slot（6）The outer fiber grating（1）It is arranged with protection hose.
7. the fibre optic strain sensor according to claim 6 with temperature self-compensation, which is characterized in that further include installation
Pedestal（12）, the mounting seat（12）Have 2, can by bolt respectively with 2 sliding blocks（2）Fixed seat（5）Bottom
It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810566261.8A CN108489415A (en) | 2018-06-01 | 2018-06-01 | A kind of fibre optic strain sensor with temperature self-compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810566261.8A CN108489415A (en) | 2018-06-01 | 2018-06-01 | A kind of fibre optic strain sensor with temperature self-compensation |
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| Publication Number | Publication Date |
|---|---|
| CN108489415A true CN108489415A (en) | 2018-09-04 |
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ID=63341965
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810566261.8A Pending CN108489415A (en) | 2018-06-01 | 2018-06-01 | A kind of fibre optic strain sensor with temperature self-compensation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307325A (en) * | 2020-03-26 | 2020-06-19 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Temperature compensation device of fiber grating strain sensor made of reinforced fiber composite material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003014491A (en) * | 2001-06-28 | 2003-01-15 | Hitachi Cable Ltd | Optical fiber sensor |
| CN203163913U (en) * | 2013-03-26 | 2013-08-28 | 武汉理工光科股份有限公司 | Diaphragm type fiber bragg grating pressure sensor with temperature compensation |
| CN103323143A (en) * | 2013-06-13 | 2013-09-25 | 重庆大学 | Quasi-distributed fiber sensor capable of measuring temperature and vibration simultaneously and manufacturing method |
| CN106482659A (en) * | 2016-12-30 | 2017-03-08 | 南京梦联桥传感科技有限公司 | A kind of long in high precision gauge length strain transducer |
| CN106524937A (en) * | 2016-11-17 | 2017-03-22 | 北京邮电大学 | Fiber bragg grating strain device |
| CN106679583A (en) * | 2016-11-02 | 2017-05-17 | 北京信息科技大学 | Temperature-self-compensation fiber grating strain sensor |
| CN208313235U (en) * | 2018-06-01 | 2019-01-01 | 南京梦联桥传感科技有限公司 | A kind of fibre optic strain sensor with temperature self-compensation |
-
2018
- 2018-06-01 CN CN201810566261.8A patent/CN108489415A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003014491A (en) * | 2001-06-28 | 2003-01-15 | Hitachi Cable Ltd | Optical fiber sensor |
| CN203163913U (en) * | 2013-03-26 | 2013-08-28 | 武汉理工光科股份有限公司 | Diaphragm type fiber bragg grating pressure sensor with temperature compensation |
| CN103323143A (en) * | 2013-06-13 | 2013-09-25 | 重庆大学 | Quasi-distributed fiber sensor capable of measuring temperature and vibration simultaneously and manufacturing method |
| CN106679583A (en) * | 2016-11-02 | 2017-05-17 | 北京信息科技大学 | Temperature-self-compensation fiber grating strain sensor |
| CN106524937A (en) * | 2016-11-17 | 2017-03-22 | 北京邮电大学 | Fiber bragg grating strain device |
| CN106482659A (en) * | 2016-12-30 | 2017-03-08 | 南京梦联桥传感科技有限公司 | A kind of long in high precision gauge length strain transducer |
| CN208313235U (en) * | 2018-06-01 | 2019-01-01 | 南京梦联桥传感科技有限公司 | A kind of fibre optic strain sensor with temperature self-compensation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307325A (en) * | 2020-03-26 | 2020-06-19 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Temperature compensation device of fiber grating strain sensor made of reinforced fiber composite material |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Caiqian Inventor after: Yang Jing Inventor after: Pan Yong Inventor after: Chen Shanshan Inventor after: Zhu Fawang Inventor after: Yang Xiaocong Inventor after: Huang Shubo Inventor before: Yang Caiqian Inventor before: Pan Yong Inventor before: Yang Jing Inventor before: Chen Shanshan Inventor before: Zhu Fawang Inventor before: Yang Xiaocong Inventor before: Huang Shubo |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 210019 room 1003, building 05, No.18, Jiangdong Street, Jialing, Jianye District, Nanjing City, Jiangsu Province Applicant after: Jiangsu menglianqiao Technology Co.,Ltd. Address before: 210019 room 204-50, 2 / F, building 04, No.18, Jiangdong Street, Jialing, Jianye District, Nanjing City, Jiangsu Province Applicant before: NANJING MENGLIANQIAO SENSING TECHNOLOGY Co.,Ltd. |