CN106482659A - A kind of long in high precision gauge length strain transducer - Google Patents
A kind of long in high precision gauge length strain transducer Download PDFInfo
- Publication number
- CN106482659A CN106482659A CN201611254269.8A CN201611254269A CN106482659A CN 106482659 A CN106482659 A CN 106482659A CN 201611254269 A CN201611254269 A CN 201611254269A CN 106482659 A CN106482659 A CN 106482659A
- Authority
- CN
- China
- Prior art keywords
- slide block
- cover plate
- strip
- optical fiber
- grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 210000005239 tubule Anatomy 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 208000028399 Critical Illness Diseases 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses a kind of long in high precision gauge length strain transducer, including fiber grating, strip slide block and cover plate, the bottom of slide block is provided with fixed seat, slide block is provided with the straight groove of strip, it is provided with the shaggy anchor slot being fixedly connected optical fiber in the straight groove of strip, 2 slide blocks are a pair, cover plate covers on slide block, 2 slide blocks are located at the two ends of cover plate respectively, cover plate with the strip fixed via being fixedly connected cover plate and slide block and screw are respectively provided with slide block, grating on optical fiber is located between slide block, optical fiber outside grating two ends is fixed in anchor slot in the straight groove of strip of slide block.Sensitivity of the present invention is high, and can adjust the sensitivity of sensor by changing the length of slide block, can produce the long gauge length strain transducer of different size, different sensitivity.
Description
Technical field
The present invention relates to the civil engineering such as building, bridge, tunnel and road inspection (prison) survey technology field, specifically a kind of
Long gauge length strain transducer in high precision.
Background technology
The projected life of the foundation engineering facility such as building, bridge, tunnel is typically all long, but in use,
Be constantly increasing with the volume of traffic, overload, environmental load effect, reinforcement corrosion, freeze thawing damage, alkali, fatigue effect,
The natural impact with artificial unfavorable factor such as corrosion effect and material aging, engineering structure is inevitably generated under bearing capacity
Fall, degradation resistance, damage accumulation, bridge structure durability reduce in some instances it may even be possible to lead to catastrophic failure to occur.China is public at a high speed
The traffic infrastructures such as road are established in the nineties in last century, and through the operation of more than 20 years, bridge structure concrete generally and opens
Split, reinforcement corrosion, the disease such as carbonization, have a strong impact on its safe operation and sustainability.According to incompletely statistics, more than 60 ten thousand, China
In bridge, nearly 200,000 of bridge joint of being critically ill.
Frequent with domestic and abroad bridge structure security incident, the safety of important infrastructure has caused that people's is universal
Concern.For guaranteeing the safe operation of the important infrastructures such as bridge structure, it should be carried out with the inspection of science (prison) and survey, for its dimension
Shield, management, the decision-making reliable bridge status data of offer and safety assessment are it is ensured that its normal safe is runed.
Inspection (prison) survey technology, as the important component part in science of bridge building field, is always the heat of Chinese scholars concern
Point.In recent years, develop with technology such as sensing, computer, information processings, inspection (prison) survey technology of engineering structure has also obtained length
The development of foot.Since the nineties in last century, structural health monitoring technology is as raising large civil structure security performance, use
Performance and a kind of important technology of ability of preventing and reducing natural disasters, have caused worldwide extensive concern.This technology is in America and Europe one
The research of a little developed countries is relatively wide, and is used widely in Practical Project.At present, the structural health monitoring technology of China is still located
In research and trial period.Wherein, sensing technology is the hardware core of structural healthy monitoring system, currently used for civil engineering knot
The sensor of structure health monitoring is foil gauge, sinusoid sensor etc. mostly, and such commercial measurement long-time stability are low, durability
Difference, it is disturbed that impact is big, the detection of the small-sized homogeneous texture such as suitable machinery is it is impossible to meet the health prison of large scale civil engineering structure
Survey demand.
It can be seen that, research and development are extremely urgent for the special sensing technology of civil engineering structure feature.Fibre Optical Sensor has stable
Property is good, certainty of measurement is high, anti-electromagnetic interference capability is strong, corrosion-resistant, small volume, strong to environment usability the advantages of, become scientific research
The focus of worker's research.But apply based on the many monitorings with " point " formula of the optical fiber sensing monitoring on civil structure at present, no
It is suitable for laying on a large scale, in order to overcome the bottleneck in engineer applied of " point " formula sensor, long gauge length optical fibre grating sensor
Exploitation significant to monitoring structural health conditions.And existing common long gauge length optical fibre grating sensor adopts whole section of envelope mostly
Dress, sensitivity is relatively low and non-adjustable, and usability is poor.
Content of the invention
The purpose of the present invention is for above-mentioned deficiency of the prior art, provides a kind of high accuracy long gauge length strain sensing
Device.
The purpose of the present invention is achieved through the following technical solutions：
A kind of long in high precision gauge length strain transducer, including fiber grating, strip slide block and cover plate, described fiber grating
It is machined with the optical fiber of one section of grating for middle part, the bottom of described slide block is provided with fixed seat, described slide block is provided with the straight groove of strip,
It is provided with the shaggy anchor slot being fixedly connected optical fiber, 2 described slide blocks are a pair, described cover plate in the straight groove of described strip
Cover on described slide block, 2 described slide blocks are located at the two ends of described cover plate respectively, and described cover plate and slide block are respectively equipped with use
In the strip fixed via being fixedly connected described cover plate and slide block and screw, the grating of described fiber grating be located at described slide block it
Between, the optical fiber outside grating two ends is fixed in anchor slot in the straight groove of strip of described slide block.
In the further design of the present invention, the optical fiber being fixed in described anchor slot is to have divested protective layer or coating
The optical fiber of layer.
In the further design of the present invention, the both sides of above-mentioned cover plate are additionally provided with the side block covering described slide block side
Plate, described side shield and described slide block side are respectively equipped with the guide rail matching and chute, make the described slide block can be in described lid
Slide on plate.
In the further design of the present invention, this sensor also includes protecting base plate, and described protection base plate is installed and fixed
The bottom surface of the described cover plate between described slide block.
In the further design of the present invention, it is soft that the described fiber grating outside described anchor slot is arranged with protection
Pipe.Protection flexible pipe can be plastic tube, four fluorine tube, capillary tubing etc., and its effect is that optical fiber or grating are protected, and protects flexible pipe
The impact to grating such as light, water, gas can effectively be completely cut off.
In the further design of the present invention, also include mounting seat, described mounting seat has 2, bolt can be passed through
It is fixedly connected with the fixed seat bottom of 2 described slide blocks respectively.
In the further design of the present invention, above-mentioned strip slide block, cover plate, protection base plate and mounting seat are metal
Part, alloy components, working of plastics or other materials part.In view of ruggedness and portability, above-mentioned strip slide block, cover plate, protection
Base plate and mounting seat are made up of alloy aircraft aluminum material, optimal with alloy aviation aluminum.
The present invention has beneficial effect following outstanding：
Compared with ordinary optic fibre grating strain transducer, sensitivity of the present invention is higher, and can be by changing the length of slide block
The sensitivity to adjust sensor for the anchorage length of degree or optical fiber, can produce the optical fiber of different size, different sensitivity
Grating sensor.And the firmness of the stability of the present invention, durability and sensor itself is high, installs and convenient disassembly,
Sensor can be reused, can be used for detection and the long term monitoring of engineering structure, be suitable for popularization and application in engineering.
Brief description
Fig. 1 is the structural representation of the long gauge length strain transducer of high accuracy in the embodiment of the present invention；
Fig. 2 is fiber grating scheme of installation in the embodiment of the present invention；
Fig. 3 is strip slide block front view in the embodiment of the present invention；
Fig. 4 is strip slide block left view in the embodiment of the present invention；
Fig. 5 is embodiment of the present invention cover plate front view；
Fig. 6 is embodiment of the present invention cover plate left view；
In figure, 1- fiber grating, 2- strip slide block, 3- cover plate, 4- grating, 5- fixed seat, 6- anchor slot, 7- strip is solid
Determine through hole, 8- screw, 9- side shield, 10- guide rail, 11- chute, 12- mounting seat, the straight groove of 13- strip.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Referring to Fig. 1～Fig. 6, the long gauge length strain transducer of one of present invention high accuracy, including fiber grating 1, strip
Shape slide block 2 and cover plate 3, protection base plate mounting seat 12, strip slide block 2, cover plate 3, protection base plate and mounting seat 12 are to close
Golden aircraft aluminum material is made.Fiber grating 1 is machined with the optical fiber of one section of grating 4 for middle part, and the bottom of slide block 2 is provided with fixed seat 5,
Slide block 2 is provided with the straight groove of strip 13, is provided with the shaggy anchor slot 6,2 being fixedly connected optical fiber in the straight groove of strip 13
Slide block 2 is a pair, and cover plate 3 covers on slide block 2, and 2 slide blocks 2 are located at the two ends of cover plate 3 respectively, on cover plate 3 and slide block 2 respectively
It is provided with the strip fixed via 7 for being fixedly connected cover plate 3 and slide block 2 and screw 8, the both sides of cover plate 3 are additionally provided with covering slide block 2
The side shield 9 of side, side shield 9 and slide block 2 side are respectively equipped with the guide rail 10 matching and chute 11, make the slide block 2 can be
Slide on cover plate 3.The grating 4 of fiber grating 1 is located between slide block 2, and the optical fiber outside grating 4 two ends is fixed on the strip of slide block 2
In anchor slot 6 in straight groove 13, the optical fiber being fixed in anchor slot 6 is the optical fiber having divested protective layer or coat, anchor slot 6
Outer fiber grating 1 is arranged with protection flexible pipe；Thin plastic flexible pipe is adopted, the optical fiber of slide block 2 outer end adopts wherein between slide block 2
The optical cable removing inner core is protection flexible pipe.Protection base plate is fixed on the bottom surface of the cover plate 3 between slide block 2, mounting seat 12
There are 2, can be fixedly connected with fixed seat 5 bottom of two slide blocks 2 respectively by bolt.
The making step of long gauge length strain transducer is in high precision：
Step 1, two slide blocks 2 are kept same level be symmetrically placed in making platform on, adjust gauge length, then vertical
Direction is fixed to it.
Step 2, the position that fiber grating 1 is in anchor slot 6 carry out divesting of one section of coat, then with grating 4 are
Centre mark anchors well distance, chooses the thin plastic flexible pipe of certain length and makees protection flexible pipe, will protect Hose Jacket on optical fiber, and make
4 sections of the grating of fiber grating 1 is located at the centre position of protection flexible pipe, then protection flexible pipe two ends is positioned over two slide block 2 ends
In the straight groove of strip 13 in portion, 4 sections of grating is placed in the middle of two slide blocks 2, and the optical fiber having divested coat is placed in anchor slot 6,
And necessarily pre- tensioning is applied to optical fiber, then start 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, respectively in the optical fiber sheathed cable protection flexible pipe of two slide block 2 outer ends,
Cable protection flexible pipe is placed in the groove of slide block 2 outer end, then with glue, cable protection flexible pipe is fixed in groove.
Step 4, after adhesive curing in step 3, corresponding with the groove of slide block 2 side for the guide rail 10 of cover plate 3, by cover plate 3
Slide into slide block 2, then will be fixing to slide block 2 and cover plate 3 with bolt.
Step 5, the bottom of the cover plate 3 being fixed on base plate bolt or glue between slide block 2, to protect fiber grating 1.
When measuring, fixed seat 5 and the mounting seat 12 of two slide blocks of sensor are fixed with bolt, bottom will be installed
Seat 12 is fixed in the structure needing measurement, then unclamps the bolt of connecting cover plate 3 and an arbitrary slide block 2, makes the slide block 2 can
With in guide rail 10 slidably.So cover plate 3 will not pair of strain sensors measurement produce hinder or affect, improve strain
The sensitivity of sensor and accuracy of measurement.
After measurement terminates, the bolt of the fixed seat that comes loose 5 and mounting seat 12 can take off strain transducer, convenient dismounting
Mode can improve the reusing of sensor.If long term monitoring, then without removal sensor.
The susceptiveness of the strain transducer of the present invention can be realized by changing optical fiber anchoring length in slide block 2.Referring to accompanying drawing
2, in high precision the computational methods of long gauge length strain transducer enhanced sensitivity coefficient be：
If the gauge length of sensor is L, in slide block 2, optical fiber anchoring length is L1, the elastic modelling quantity of slide block is E1, cross-sectional area
For A1；Optical fiber suspended length L2, optical fiber elastic modelling quantity is E2, cross-sectional area is A2, tubule elastic modelling quantity is E3, cross-sectional area is
A3.High-precision sensor for the ordinary sensors for L for the gauge length and the present invention is it is assumed that the strain that senses of gauge length region
It is ε
Ordinary optic fibre sensor：
Identical homogeneous material ε is identical everywhere, then intermediate fibres grating L2The 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：Δ L '=2 Δ L '1+ΔL′2Or Δ L '=2 Δ L '1+ΔL′3ΔL′1
For slide block 2 elongation,For optical fiber L2Segments elongate amount,Stretch for tubule
Long amount.
Because Δ L '2=Δ L '3, thenOrThe present invention is in order to improve the sensitive of sensor
Degree, tubule is chosen and is played the relatively low plastic tube of mould, then E1A1>>E2A2+E3A3, i.e. Δ L '1<<ΔL′2, it is approximately considered Δ L '=Δ L
′2, intermediate fibres grating L of the present invention2The strain of section is：
BecauseΔ L '=Δ L '2, so
ThenI.e.
If the Fibre Optical Sensor of the present invention is contrasted with ordinary optic fibre sensor, enhanced sensitivity coefficient is K, then
Therefore the sensitivity of sensor, the reason of K can be adjusted by changing optical fiber anchoring length L1 or its length
By maximum it is
It is more than presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made
With without departing from technical solution of the present invention scope when, belong to protection scope of the present invention.
Claims (6)
1. a kind of long in high precision gauge length strain transducer is it is characterised in that this sensor includes fiber grating（1）, strip slide
Block（2）And cover plate（3）, described fiber grating（1）It is machined with one section of grating for middle part（4）Optical fiber, described slide block（2）Bottom
It is provided with fixed seat（5）, described slide block（2）It is provided with the straight groove of strip（13）, the straight groove of described strip（13）In to be provided with surface thick
The rough anchor slot being fixedly connected optical fiber（6）, 2 described slide blocks（2）For a pair, described cover plate（3）Cover in described slide block（2）
On, 2 described slide blocks（2）It is located at described cover plate respectively（3）Two ends, described cover plate（3）And slide block（2）On be respectively provided with
It is fixedly connected described cover plate（3）And slide block（2）Strip fixed via（7）And screw（8）, described fiber grating（1）On light
Grid（4）Positioned at described slide block（2）Between, grating（4）Optical fiber outside two ends is fixed on described slide block（2）The straight groove of strip（13）
Middle anchor slot（6）In.
2. the long gauge length strain transducer of high accuracy according to claim 1 is it is characterised in that be fixed on described anchor slot
（6）In optical fiber be the optical fiber having divested protective layer or coat.
3. the long gauge length strain transducer of high accuracy according to claim 1 is it is characterised in that described cover plate（3）Both sides
It is additionally provided with the described slide block of covering（2）The side shield of side（9）, described side shield（9）With described slide block（2）Side is respectively equipped with phase
The guide rail of cooperation（10）And chute（11）, make described slide block（2）Can be in described cover plate（3）Upper slip.
4. according to the long gauge length strain transducer of the arbitrary described high accuracy of claim 1-3 it is characterised in that this sensor also wraps
Include protection base plate, described protection base plate is fixed on described slide block（2）Between described cover plate（3）Bottom surface.
5. according to the long gauge length strain transducer of the arbitrary described high accuracy of claim 1-3 it is characterised in that being located at described anchoring
Groove（6）Outer described fiber grating（1）It is arranged with protection flexible pipe.
6. the long gauge length strain transducer of high accuracy according to claim 5 is it is characterised in that also include mounting seat
（12）, described mounting seat（12）Have 2, can by bolt respectively with 2 described slide blocks（2）Fixed seat（5）Bottom is fixed
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254269.8A CN106482659A (en) | 2016-12-30 | 2016-12-30 | A kind of long in high precision gauge length strain transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254269.8A CN106482659A (en) | 2016-12-30 | 2016-12-30 | A kind of long in high precision gauge length strain transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106482659A true CN106482659A (en) | 2017-03-08 |
Family
ID=58285816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611254269.8A Pending CN106482659A (en) | 2016-12-30 | 2016-12-30 | A kind of long in high precision gauge length strain transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106482659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489415A (en) * | 2018-06-01 | 2018-09-04 | 南京梦联桥传感科技有限公司 | A kind of fibre optic strain sensor with temperature self-compensation |
| CN109520465A (en) * | 2019-01-08 | 2019-03-26 | 同济大学 | The fixed device of the adjustable strain transducer of gauge length |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000111319A (en) * | 1998-09-30 | 2000-04-18 | Ntt Advanced Technology Corp | Optical fiber sensor |
| CN202582501U (en) * | 2012-05-09 | 2012-12-05 | 无锡成电光纤传感科技有限公司 | Optical fiber grating strain transducer |
| CN103383246A (en) * | 2012-05-04 | 2013-11-06 | 电子科技大学 | High-sensitivity fiber Bragg grating strain sensor |
| CN103424081A (en) * | 2012-05-23 | 2013-12-04 | 东南大学 | Long-gauge-distance strain sensor high-precision calibration frame |
| CN103438815A (en) * | 2013-08-02 | 2013-12-11 | 东南大学 | Durable and long-scale-distance fiber grating sensor and manufacturing method thereof |
| CN203489836U (en) * | 2013-10-09 | 2014-03-19 | 杨才千 | Intelligent long-gauge length strain sensor |
| CN205373656U (en) * | 2015-12-22 | 2016-07-06 | 中国船舶重工集团公司第七一五研究所 | Sensitivity adjustable fiber bragg grating strain sensor |
| CN106225818A (en) * | 2016-07-15 | 2016-12-14 | 东南大学 | A kind of single-point temperature compensation multifunctional intellectual anchor pole and installation distribution method thereof |
| CN206321213U (en) * | 2016-12-30 | 2017-07-11 | 南京梦联桥传感科技有限公司 | A kind of long gauge length strain transducer of high accuracy |
-
2016
- 2016-12-30 CN CN201611254269.8A patent/CN106482659A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000111319A (en) * | 1998-09-30 | 2000-04-18 | Ntt Advanced Technology Corp | Optical fiber sensor |
| CN103383246A (en) * | 2012-05-04 | 2013-11-06 | 电子科技大学 | High-sensitivity fiber Bragg grating strain sensor |
| CN202582501U (en) * | 2012-05-09 | 2012-12-05 | 无锡成电光纤传感科技有限公司 | Optical fiber grating strain transducer |
| CN103424081A (en) * | 2012-05-23 | 2013-12-04 | 东南大学 | Long-gauge-distance strain sensor high-precision calibration frame |
| CN103438815A (en) * | 2013-08-02 | 2013-12-11 | 东南大学 | Durable and long-scale-distance fiber grating sensor and manufacturing method thereof |
| WO2015014126A1 (en) * | 2013-08-02 | 2015-02-05 | 东南大学 | High-durability and long-scale-distance fiber grating sensor and manufacturing method therefor |
| CN203489836U (en) * | 2013-10-09 | 2014-03-19 | 杨才千 | Intelligent long-gauge length strain sensor |
| CN205373656U (en) * | 2015-12-22 | 2016-07-06 | 中国船舶重工集团公司第七一五研究所 | Sensitivity adjustable fiber bragg grating strain sensor |
| CN106225818A (en) * | 2016-07-15 | 2016-12-14 | 东南大学 | A kind of single-point temperature compensation multifunctional intellectual anchor pole and installation distribution method thereof |
| CN206321213U (en) * | 2016-12-30 | 2017-07-11 | 南京梦联桥传感科技有限公司 | A kind of long gauge length strain transducer of high accuracy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489415A (en) * | 2018-06-01 | 2018-09-04 | 南京梦联桥传感科技有限公司 | A kind of fibre optic strain sensor with temperature self-compensation |
| CN109520465A (en) * | 2019-01-08 | 2019-03-26 | 同济大学 | The fixed device of the adjustable strain transducer of gauge length |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103438815B (en) | Durable and long-scale-distance fiber grating sensor and manufacturing method thereof | |
| CN109655007B (en) | Method for monitoring deformation of concrete in pipe poured into steel pipe arch of super-large bridge | |
| Deng et al. | Applications of fiber optic sensors in civil engineering | |
| Kania et al. | Application of distributed fibre optic cables in piles | |
| CN210981177U (en) | Intelligent geogrid suitable for tunnel and monitoring system thereof | |
| CN101660898B (en) | Fiber grating pavement strain transducer | |
| CN206321213U (en) | A kind of long gauge length strain transducer of high accuracy | |
| CN106482659A (en) | A kind of long in high precision gauge length strain transducer | |
| CN203642880U (en) | Fiber bragg grating distributed displacement sensor monitoring inner deformation of side slope | |
| RU127913U1 (en) | MOTOR VEHICLE SENSOR (ATS) | |
| CN201561828U (en) | Fiber grating geological disaster monitor | |
| CN205688663U (en) | A kind of intelligent reinforcing bar based on FBG | |
| CN117330125A (en) | Optical fiber monitoring device and data processing method for existing high-speed railway tunnel in shield crossing | |
| CN203642882U (en) | Fiber grating sensor with high durability and long gauge length | |
| CN214250869U (en) | Distributed optical fiber sensing device capable of monitoring steel beam cracks | |
| CN115046663A (en) | Anchor rod stress monitoring method and anchor rod stress data analysis method | |
| CN216869838U (en) | A intelligent clamp for $ monitoring reinforcing bar rust expansive force in concrete | |
| CN212111132U (en) | Intelligent anchorage device for monitoring corrosion fracture of prestressed steel strand | |
| Stockdale et al. | Generalized processing of FBG/FRP strain data for structural health monitoring | |
| CN113513122A (en) | Hot-cast anchor of intelligent steel strand inhaul cable and manufacturing method | |
| CN108489415A (en) | A kind of fibre optic strain sensor with temperature self-compensation | |
| RU127912U1 (en) | VEHICLE WEIGHT SENSOR | |
| Ou et al. | Encapsulation techniques for FBGs and smart monitoring for bridges with FBG sensors | |
| CN2748888Y (en) | Fiber reinforced resin rib packaged fiber grating temperature sensor | |
| RU135809U1 (en) | DEVICE FOR CONTROL OF SOIL |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: Room 204-50, 2 / F, building 04, 18 Jiangdong Street, Jialing, Nanjing, Jiangsu 210019 Applicant before: NANJING MENGLIANQIAO SENSING TECHNOLOGY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |