CN107700457A - A kind of high-speed railway sedimentation monitoring system based on fiber grating - Google Patents
A kind of high-speed railway sedimentation monitoring system based on fiber grating Download PDFInfo
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- CN107700457A CN107700457A CN201711101080.XA CN201711101080A CN107700457A CN 107700457 A CN107700457 A CN 107700457A CN 201711101080 A CN201711101080 A CN 201711101080A CN 107700457 A CN107700457 A CN 107700457A
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- grating
- fiber grating
- speed railway
- monitoring system
- housing
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 239000000835 fiber Substances 0.000 title claims abstract description 33
- 238000004062 sedimentation Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000013307 optical fiber Substances 0.000 claims description 9
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 7
- 240000005373 Panax quinquefolius Species 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920006332 epoxy adhesive Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000002277 temperature effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention belongs to high-speed railway settlement monitoring technology field, discloses a kind of high-speed railway sedimentation monitoring system based on fiber grating, for solving the problems, such as that existing high-speed railway sedimentation monitoring system is low there is precision.The present invention includes at least two fiber grating spirit levels being arranged on monitoring surface, the fiber grating spirit level includes housing, the bottom of the housing is arranged on base, enclosure interior is provided with elastic corrugated diaphragm, housing is divided into the installation cavity for containing liquid zone and bottom on top by elastic corrugated diaphragm, the lower surface of elastic corrugated diaphragm is provided with two grating fixed columns, pressure measurement grating is installed between two grating fixed columns, thermometric grating is additionally provided with the installation cavity, thermometric grating and pressure measurement grating are connected with data collecting system, the data of collection are sent to control centre by the data collecting system.
Description
Technical field
The invention belongs to high-speed railway settlement monitoring technology field, and in particular to a kind of high-speed railway based on fiber grating
Sedimentation monitoring system, for being detected to high-speed railway sedimentation.
Background technology
In recent years, the infrastructure development of high-speed railway is swift and violent, and high speed traveling also brings higher to line construction system
Smooth-going requirement.How high-precision, real-time dynamic, steady in a long-term being deformed to high-speed railway structure sediment have been monitored into mesh
Preceding key technical problem.
The conventional static spirit level used at present is mostly contact type measurement, is reacted with the ball float height change of liquid level contact
The height change of liquid level, guide rod connect ball float with SEA LEVEL VARIATION, and sensor is arranged on guide rod changing value being converted to electric signal,
It is sent to collection terminal.Larger error, mainly ball float infiltration, guide rod inclination, temperature and air pressure be present in this ball float metering system
Error caused by caused buoyancy change.
What conventional static spirit level sensing element mainly used at present has：Inductance type, type vibration wire, condenser type.Existing roadbed
There are the following problems for settlement monitoring equipment：Spoilage is high, precision is relatively poor, long-time stability are poor, needs periodically re-scale,
Easily by electromagnetic interference, connect up the defects of more etc..
The content of the invention
The present invention provides a kind of base to solve the problems, such as that existing high-speed railway sedimentation monitoring system is low there is precision
In the high-speed railway sedimentation monitoring system of fiber grating, there is the characteristics of monitoring accuracy is high, while have in use not
It is fragile, stability is high, the characteristics of need not re-scaling and being not easy by electromagnetic interference, while the present invention can also be reduced
Wiring.
To solve technical problem, the technical solution adopted in the present invention is：
A kind of high-speed railway sedimentation monitoring system based on fiber grating, it is characterised in that be arranged on including at least two
Fiber grating spirit level on monitoring surface, the fiber grating spirit level include housing, and the bottom of the housing is arranged on base
On, enclosure interior is provided with elastic corrugated diaphragm, and housing is divided into the installation for containing liquid zone and bottom on top by elastic corrugated diaphragm
Chamber, the lower surface of elastic corrugated diaphragm are provided with two grating fixed columns, pressure measurement grating are provided between two grating fixed columns,
Thermometric grating is additionally provided with the installation cavity, thermometric grating and pressure measurement grating are connected with data collecting system, and the data are adopted
The data of collection are sent to control centre by collecting system；The adjusted screw rod of base is connected with monitoring surface
Bottom plate；The epimere of the Sheng liquid zone of adjacent fiber grating spirit level connects through breather pipe, wherein stomata is offered on a breather pipe,
The purpose of passage is to maintain the constant of the liquid level pressure above in each monitoring point housing, adjacent fiber grating spirit level
The hypomere for containing liquid zone connects through fluid-through tube.
The adjusting screw rod is equipped with adjusting nut, and air-bubble level is provided with the base.
The thermometric grating is encapsulated in capillary.
The tail optical fiber of the thermometric grating and pressure measurement grating is connected after being welded together through optical fiber with data collecting system.
The elastic corrugated diaphragm is connected with case weld.
The pressure measurement grating is attached between two grating fixed columns after applying prestressing force by Wear Characteristics of Epoxy Adhesive.
Water or anti-icing fluid are contained in the splendid attire area, cost can be reduced using water when environment temperature is more than 0 DEG C,
Anti-icing fluid is used when extremely frigid zones are monitored.
Compared with prior art, the invention has the advantages that：
The liquid level that relative settlement between each monitoring point of the present invention causes to contain liquid zone changes, now elastic corrugated film
Amount of deflection deformation occurs therewith for piece, and the relative position between grating fixed column changes with elastic corrugated diaphragm deformation so that surveys
Press polish grid strain, and finally cause pressure measurement grating wavelength to change, by the change can for measuring pressure measurement grating wavelength
Live and contain the situation of change of area's liquid level, while environment temperature is obtained by thermometric grating, it is proposed that being surveyed caused by temperature effect
The change of grating wavelength is pressed, so as to be measured while realizing temperature and sedimentation.The present invention has system architecture compared with prior art
Simply, the characteristics of stable performance, the precision of measurement is improved, while wiring can also be reduced.It is quiet that the present invention does not use tradition
Sensing element in power level system, using optical fiber grating sensing element, there is small signal attenuation, strong antijamming capability, resistance to height
Warm, corrosion-resistant, high sensitivity, it is easy of integration the advantages that.
The present invention does not use the ball float used in traditional static liquid level and used based on grating fibers skill
The static liquid level of art, effectively avoid ball float infiltration, guide rod is tilted, buoyancy change is made caused by the change of temperature and air pressure
Into error, effectively raise the monitoring accuracy of works vertical displacement.
The present invention is transmitted to control centre by data collecting system simultaneously, can realize long-term unmanned automation remote prison
Survey.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention
Marked in figure：1st, housing, 2, contain liquid zone, 3, elastic corrugated diaphragm, 4, grating fixed column, 5, pressure measurement grating, 6, light
Fibre, 7, thermometric grating, 8, breather pipe, 9, fluid-through tube, 10, air-bubble level, 11, adjusting nut, 12, adjusting screw rod, 13, expansion
Bolt, 14, base, 15, bottom plate, 16, monitoring surface, 17, data collecting system, 18, control centre.
Embodiment
With reference to embodiment, the invention will be further described, and described embodiment is only a present invention part
Embodiment, it is not whole embodiments.Based on the embodiment in the present invention, one of ordinary skill in the art is not making
Other embodiments used obtained under the premise of creative work, belong to protection scope of the present invention.
With reference to accompanying drawing, the high-speed railway sedimentation monitoring system of the invention based on fiber grating, including at least two installations
Fiber grating spirit level on monitoring surface, the fiber grating spirit level include housing 1, and the bottom of the housing 1 is arranged on
On base 14, elastic corrugated diaphragm 3 is installed inside housing 1, elastic corrugated diaphragm 3 divides housing 1 He of Sheng liquid zone 2 for top
The installation cavity of bottom, the lower surface of elastic corrugated diaphragm 3 are provided with two grating fixed columns 4, pacified between two grating fixed columns 4
Equipped with pressure measurement grating 5, thermometric grating 7 is additionally provided with the installation cavity, thermometric grating 7 and pressure measurement grating 5 are connected with data and adopted
The data of collection are sent to control centre 18 by collecting system 17, the data collecting system 17, wherein for being used to gather thermometric
The data collecting system 17 of grating and pressure measurement raster data belongs to prior art products, those skilled in the art can understand and
Understand, will not be repeated here, data collecting system can transfer data to control centre 18 by modes such as GPRS, in control
The heart 18 falls within prior art, will not be repeated here；The adjusted screw rod 12 of base 14 is connected with for being arranged on monitoring surface
Bottom plate 15 on 16, its bottom plate 15 are connected by expansion bolt 13 with monitoring surface 16；The Sheng of adjacent fiber grating spirit level
The epimere of liquid zone 2 connects through breather pipe 8, wherein offering stomata on a breather pipe 8, the purpose of passage is to maintain each monitoring
The constant of the liquid level pressure above in housing is put, the hypomere of the Sheng liquid zone 2 of adjacent fiber grating spirit level connects through fluid-through tube 9
It is logical.
The liquid level that relative settlement between each monitoring point of the present invention causes to contain liquid zone changes, now elastic corrugated film
Amount of deflection deformation occurs therewith for piece, and the relative position between grating fixed column changes with elastic corrugated diaphragm deformation so that surveys
Press polish grid strain, and finally cause pressure measurement grating wavelength to change, by the change can for measuring pressure measurement grating wavelength
Live and contain the situation of change of area's liquid level, while environment temperature is obtained by thermometric grating, it is proposed that being surveyed caused by temperature effect
The change of grating wavelength is pressed, so as to be measured while realizing temperature and sedimentation.The present invention has system architecture compared with prior art
Simply, the characteristics of stable performance, the precision of measurement is improved, while wiring can also be reduced.It is quiet that the present invention does not use tradition
Sensing element in power level system, using optical fiber grating sensing element, there is small signal attenuation, strong antijamming capability, resistance to height
Warm, corrosion-resistant, high sensitivity, it is easy of integration the advantages that.
The present invention does not use the ball float used in traditional static liquid level and used based on grating fibers skill
The static liquid level of art, effectively avoid ball float infiltration, guide rod is tilted, buoyancy change is made caused by the change of temperature and air pressure
Into error, effectively raise the monitoring accuracy of works vertical displacement.
The present invention is transmitted to control centre by data collecting system simultaneously, can realize long-term unmanned automation remote prison
Survey.
As a kind of mode of selection of the present invention, the adjusting screw rod 12 is equipped with adjusting nut 11, on the base 14
Air-bubble level 10 is installed, during installation, by observing air-bubble level, by adjusting the bottom of adjusting nut 11
Seat is in a horizontality.
As a kind of preferable mode of the present invention, the thermometric grating 7 is encapsulated in capillary, is obtained by thermometric grating 7
To environment temperature, it is proposed that the change of pressure measurement grating wavelength caused by temperature effect, so as to be surveyed while realizing temperature and sedimentation
Amount..
As a kind of preferable mode of the present invention, the tail optical fiber of the thermometric grating 7 and pressure measurement grating 5 passes through after being welded together
Optical fiber 6 is connected with data collecting system.
As a kind of mode of selection of the present invention, the elastic corrugated diaphragm 3 is welded to connect with housing 1.
The pressure measurement grating 5 applies two grating fixed columns 4 are attached to by Wear Characteristics of Epoxy Adhesive after prestressing force between so that
Pressure measurement grating is in hanging tight state.
Water or anti-icing fluid are contained in the splendid attire area 2, can be reduced into using water when environment temperature is more than 0 DEG C
This, anti-icing fluid is used when extremely frigid zones are monitored.
For the present invention during making, waterproof sealing processing is carried out in joint.
The present invention monitoring method be：
A., the fiber grating of relatively stable point (datum mark) and each point to be measured is installed by leveling nut and air-bubble level
Spirit level, it is installed along with opposed flattened bottom plate.
B. each grating fibers spirit level, liquid feeding de-soak, connection ventilation are connected with three-way connection using transparent PVC flexible pipe net
Pipe.
C. all optical-fiber connection data acquisition systems, are connected by modes such as GRPS with communication center.
D. measuring principle record preliminary design state reading：, λiFor the i-th moment pressure measurement grating reading, λ0For initial time pressure measurement light
Grid reading, TiFor the i-th moment thermometric grating reading, T0For initial time thermometric grating reading.K is transducer sensitivity.
ΔHiFor any measuring point in the i-th moment container liquid level relative to initial time height change；
ΔHi=K × [(λi-λ0)-(Ti-T0)]
Vertical displacement Δ h of the i-th moment any measuring point relative to datum mark can be drawni。
Δhi=Δ HSurvey i-ΔHQuasi- i。
Claims (7)
1. a kind of high-speed railway sedimentation monitoring system based on fiber grating, it is characterised in that be arranged on prison including at least two
Fiber grating spirit level on survey face, the fiber grating spirit level include housing (1), and the bottom of the housing (1) is arranged on
On base (14), elastic corrugated diaphragm (3) is installed inside housing (1), housing (1) is divided into top by elastic corrugated diaphragm (3)
Sheng liquid zone (2) and bottom installation cavity, the lower surface of elastic corrugated diaphragm (3) is provided with two grating fixed columns (4), two
Pressure measurement grating (5) is installed between grating fixed column (4), thermometric grating (7), thermometric grating are additionally provided with the installation cavity
(7) and pressure measurement grating (5) is connected with data collecting system (17), and the data of collection are sent to by the data collecting system (17)
Control centre (18)；The adjusted screw rod of the base (14) (12) is connected with for the bottom plate (15) on monitoring surface；Phase
The epimere of the Sheng liquid zone (2) of adjacent fiber grating spirit level connects through breather pipe (8), wherein offering gas on a breather pipe (8)
Hole, the hypomere of the Sheng liquid zone (2) of adjacent fiber grating spirit level connect through fluid-through tube (9).
2. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the tune
Section screw rod (12) is equipped with adjusting nut (11), and air-bubble level (10) is provided with the base (14).
3. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the survey
Warm grating (7) is encapsulated in capillary.
4. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the survey
The tail optical fiber of warm grating (7) and pressure measurement grating (5) is connected after being welded together through optical fiber with data collecting system.
5. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the bullet
Property convoluted diaphragm (3) is welded to connect with housing (1).
6. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the survey
Press polish grid (5) are attached between two grating fixed columns after applying prestressing force by Wear Characteristics of Epoxy Adhesive.
7. the high-speed railway sedimentation monitoring system according to claim 1 based on fiber grating, it is characterised in that the Sheng
Fill and water or anti-icing fluid are contained in area (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101080.XA CN107700457A (en) | 2017-11-09 | 2017-11-09 | A kind of high-speed railway sedimentation monitoring system based on fiber grating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101080.XA CN107700457A (en) | 2017-11-09 | 2017-11-09 | A kind of high-speed railway sedimentation monitoring system based on fiber grating |
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| Publication Number | Publication Date |
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| CN107700457A true CN107700457A (en) | 2018-02-16 |
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| CN201711101080.XA Pending CN107700457A (en) | 2017-11-09 | 2017-11-09 | A kind of high-speed railway sedimentation monitoring system based on fiber grating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827234A (en) * | 2018-07-03 | 2018-11-16 | 厦门大学嘉庚学院 | A kind of formwork-support optic foundation settlement detector and its method |
| CN108827235A (en) * | 2018-07-03 | 2018-11-16 | 厦门大学嘉庚学院 | A kind of high-supported formwork template settlement monitoring devices and methods therefor |
| CN110631549A (en) * | 2019-10-31 | 2019-12-31 | 广州万构建筑工程设计有限公司 | Roadbed settlement monitoring device based on fiber bragg grating |
| CN111457889A (en) * | 2020-06-02 | 2020-07-28 | 中际物联科技（深圳）有限公司 | Method for monitoring subway tunnel settlement through optical fiber static level |
| CN113008152A (en) * | 2021-02-23 | 2021-06-22 | 武汉智慧地铁信息技术有限公司 | Track deformation measuring method and device based on fiber bragg grating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043346A (en) * | 2015-05-13 | 2015-11-11 | 黑龙江大学 | High-speed railway settlement monitoring sensor based on fiber Bragg grating |
| CN204757973U (en) * | 2015-05-13 | 2015-11-11 | 黑龙江大学 | High -speed railway settlement monitoring sensor based on fiber grating |
| CN207553069U (en) * | 2017-11-09 | 2018-06-29 | 成都西南交大加成科技发展有限公司 | A kind of high-speed railway sedimentation monitoring system based on fiber grating |
-
2017
- 2017-11-09 CN CN201711101080.XA patent/CN107700457A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043346A (en) * | 2015-05-13 | 2015-11-11 | 黑龙江大学 | High-speed railway settlement monitoring sensor based on fiber Bragg grating |
| CN204757973U (en) * | 2015-05-13 | 2015-11-11 | 黑龙江大学 | High -speed railway settlement monitoring sensor based on fiber grating |
| CN207553069U (en) * | 2017-11-09 | 2018-06-29 | 成都西南交大加成科技发展有限公司 | A kind of high-speed railway sedimentation monitoring system based on fiber grating |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827234A (en) * | 2018-07-03 | 2018-11-16 | 厦门大学嘉庚学院 | A kind of formwork-support optic foundation settlement detector and its method |
| CN108827235A (en) * | 2018-07-03 | 2018-11-16 | 厦门大学嘉庚学院 | A kind of high-supported formwork template settlement monitoring devices and methods therefor |
| CN110631549A (en) * | 2019-10-31 | 2019-12-31 | 广州万构建筑工程设计有限公司 | Roadbed settlement monitoring device based on fiber bragg grating |
| CN111457889A (en) * | 2020-06-02 | 2020-07-28 | 中际物联科技（深圳）有限公司 | Method for monitoring subway tunnel settlement through optical fiber static level |
| CN111457889B (en) * | 2020-06-02 | 2022-07-12 | 中际物联科技（深圳）有限公司 | Method for monitoring subway tunnel settlement through optical fiber static level |
| CN113008152A (en) * | 2021-02-23 | 2021-06-22 | 武汉智慧地铁信息技术有限公司 | Track deformation measuring method and device based on fiber bragg grating |
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Effective date of registration: 20200427 Address after: 610000 No. 2, No. 1, building 13, 8 star road, Chengdu, Sichuan, Jinniu District Applicant after: Su Qian Address before: 610000 the middle of the West Milky way in the hi-tech West District of Chengdu, Sichuan Applicant before: CHENGDU, SOUTHWEST JIAOTONG UNIVERSITY ADDITION TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Application publication date: 20180216 |