CN106643542A - Fiber grating type sensor - Google Patents
Fiber grating type sensor Download PDFInfo
- Publication number
- CN106643542A CN106643542A CN201611225873.8A CN201611225873A CN106643542A CN 106643542 A CN106643542 A CN 106643542A CN 201611225873 A CN201611225873 A CN 201611225873A CN 106643542 A CN106643542 A CN 106643542A
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- Prior art keywords
- housing
- fiber
- optical fiber
- weight
- fiber grating
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- 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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Abstract
The invention relates to the field of slope sliding monitoring, and discloses a fiber grating type sensor. The fiber grating type comprises the components of a housing (3); a counterweight (4) which is arranged in the housing (3) and furthermore can swing relative to the housing (3) when the housing (3) inclines; and a fiber on which a fiber grating is arranged, wherein the fiber is fixed to the counterweight (4) and the housing (3) at positions which are next to two ends of the fiber grating, wherein one end of the fiber penetrates through the housing (3). The fiber grating type sensor can realize monitoring for slope sliding when slope sliding occurs. Furthermore the fiber grating type sensor has advantages of compact structure and high sensitivity.
Description
Technical field
The present invention relates to Slope Sliding monitoring field, in particular it relates to a kind of fiber Bragg grating type sensor.
Background technology
Highway, the high gradient slope of Along Railway are it may happen that the event such as side slope slump, the safety and traffic fortune to people
Defeated safety threatens, therefore, it is particularly significant to the deep slippage or deformation monitoring of high gradient slope.Current typical side slope deep
Sliding monitoring sensor has condenser type or eddy current type displacement transducer.Slippage is measured by electric transducer and turns slippage
It is changed to electric signal input analytical equipment to be calculated, finally draws deep slippage amount.But, there is sealing in electrical type sensor
Difference, easily electric leakage, it is perishable, by electromagnetic interference, easily by the problems such as thunderbolt, there are problems that in practical engineering application a lot.
Fibre Optical Sensor is sensed using optical signal and transmitted, and not there is a problem of above-mentioned electrical type sensor, in recent years
In carrying out more and more purposes for using the monitoring of side slope deep slippage.Chinese patent (publication number CN102288162) discloses one
Fiber Bragg grating type sensor is planted, using cantilever beam structure, this sensor is needed first with larger mass and less cantilever
Beam could or higher sensitivity, so as to limit the size of sensor, be not easy to install, while larger mass and compared with
Little cantilever beam result in the larger amount of deflection of cantilever beam, ultimately result in sensor be output as it is non-linear, it is impossible to ensure sensitivity.
Accordingly, it would be desirable to the high sensor of a kind of compact conformation and sensitivity.
The content of the invention
It is an object of the invention to provide a kind of equipment, the equipment can realize the monitoring of side slope sliding, tight with structure
Gather and the characteristics of sensitivity is high.
To achieve these goals, the present invention provides a kind of fiber Bragg grating type sensor, and the sensor includes：Housing；Weight
Hammer, the weight is arranged on the enclosure interior and can swing relative to the housing when the housing is inclined；Optical fiber, it is described
Be provided with fiber grating on optical fiber, the optical fiber the position near the fiber grating two ends be individually fixed in the weight and
The housing；Wherein, the optical fiber at least one end passes the housing.
Preferably, the optical fiber includes：First optical fiber and the second optical fiber；Wherein, the fiber grating of first optical fiber and
The fiber grating of second optical fiber is respectively positioned at the offside of the weight.
Preferably, the housing includes top cover and the base portion being fixed on the top cover, and the optical fiber is near described
The end of fiber grating is fixed on the base portion.
Preferably, axle is provided with the housing, the weight is rotatably mounted in the axle.
Preferably, the base portion includes the support plate being fixed on the top cover and the bottom being arranged between the support plate
Seat, the axle is fixed between the support plate..
Preferably, the locating slot for positioning the fiber grating is provided with the side of the weight.
Preferably, the access apertures for penetrating the fiber grating is provided with the top cover；And/or the housing
Including bottom, the hole for passing the fiber grating is provided with the bottom.
Preferably, the sensor is fixed in external shell, and multiple fiber gratings, Duo Gesuo are provided with the optical fiber
The multiple housings of fiber grating correspondence are stated, the optical fiber is used to be connected with (FBG) demodulator.
By above-mentioned technical proposal, the sensor that the present invention is provided can be arranged in the inclinometer pipe of embedment side slope,
When there is sliding in side slope, the housing of the sensor can run-off the straight therewith so that occurring relative to incline between weight and housing
Tiltedly, and then the fiber grating that is fixed between housing and weight is caused to deform upon and be delivered in the form of optical signal outside,
So as to monitor the sliding of side slope.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the housing interior structure of sensor according to the preferred embodiment of the present invention；
Fig. 2 is the schematic diagram of the sensor external structure in Fig. 1；
Fig. 3 is the schematic diagram of the arrangement form of the housing of the sensor in multiple Fig. 1.
Description of reference numerals
The optical fiber of 1 first optical fiber 2 second
The weight of 3 housing 4
The axle of 5 top cover 6
The support plate of 7 base 8
The hole of 9 access apertures 10
The pilot hole of 11 fastener hole 12
The locating slot of 13 bottom 14
15 (FBG) demodulators
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The present invention provides a kind of sensor, and the sensor includes：Housing 3；Weight 4, the weight 4 is arranged on the housing 3
Inside simultaneously can swing when the housing 3 is inclined relative to the housing 3；Optical fiber, on the optical fiber fiber grating is provided with,
The optical fiber is individually fixed in the weight 4 and the housing 3 in the position near the fiber grating two ends；Wherein, it is described
Optical fiber at least one end pass the housing 3.The sensor that the present invention is provided can be arranged on into embedment need to enter line slip prison
In the inclinometer pipe of the side slope of survey, when side slope occurs sliding, the sensor can occur corresponding inclination with the sliding of side slope, i.e.,
There is relative inclination in the run-off the straight of housing 3, weight 4, with housing 3 due to the two ends on fiber grating point under gravity
Weight 4 and housing 3 are not fixed on, therefore fiber grating can occur relative deformation, change the output wavelength of fiber grating.Pass through
Optical fiber light is monitored using external detection equipment (such as (FBG) demodulator, one end for passing housing 3 of optical fiber can be connected to (FBG) demodulator)
The output wavelength of grid can monitor the sliding of side slope.
Wherein, the two ends of fiber grating can be separately fixed at weight 4 and housing 3 by appropriate mode, such as use glue
Water is pasted or is fastened with bolt, and the fiber grating should be under normal circumstances also slightly tight state, so that sliding
Fiber grating can significantly occur corresponding deformation during generation.The housing 3 should also be made using corrosion-resistant material, to adapt to
The moist environment of the soil inside side slope.
In actual applications, further encountering needs the situation in the direction for distinguishing Slope Sliding, in order to meet the demand, preferably
Ground, the optical fiber includes：First optical fiber 1 and the second optical fiber 2；Wherein, the fiber grating of first optical fiber 1 and second light
Fine 2 fiber grating respectively positioned at the offside of the weight 4, first optical fiber 1 at least one end and second optical fiber 2 to
Rare one end passes the housing 3.I.e. the first optical fiber 1 is individually fixed in the first of the weight 4 and the housing 3 including two ends
Fiber grating；Second optical fiber 2 is individually fixed in the second fiber grating of the weight 4 and the housing 3 including two ends.
Because the fiber grating of two optical fiber is separately positioned on the offside of weight 4, incline relative to housing 3 in weight 4
When tiltedly, two fiber gratings necessarily have a meeting to be stretched, and a meeting occurs to relax, so that the first fiber grating and second
There are different changes in the output wavelength of fiber grating, by the analysis to the change direction of Slope Sliding is judged, additionally,
The more single optical fiber of setting form of two optical fiber, also can have greatly improved in sensitivity, and the present invention is not limited
In using one or two optical fiber, the arrangement form of the multifiber of any feasibility protection scope of the present invention it
It is interior.
The fiber grating that the present invention is provided can be arranged on housing 3 using appropriate form, it is preferable that the housing 3 is wrapped
Top cover 5 and the base portion being fixed on the top cover 5 are included, the optical fiber is fixed on institute in the end near the fiber grating
Base portion is stated, the base portion is extended to the inside of housing 3 and can be fixed on top cover 5 by the pilot hole 12 on top cover 5,
During 3 run-off the straight of housing, the base portion with the run-off the straight of housing 3 so that the light being fixed between base portion and weight 4
Fine grating is deformed upon.
In order to realize the relative tilt when housing 3 is inclined between weight 4 and housing 3, also it may be preferred that the housing 3
On be provided with axle 6, the weight 4 is rotatably mounted in the axle 6.In 3 run-off the straight of housing, work of the weight 4 in gravity
Swung around axle 6 with lower, so as to the relative tilt realized and between housing 3.Wherein, fiber grating is fixed on weight 4
End can select and be fixed on the part of the circular axle 6 on weight 4, and housing 3 should have receiving weight 4 to swing in proper range
Space such that it is able to the more side slope of sliding is monitored.
Its axis 6 can be being arranged in housing 3 by the way of appropriate, it is preferable that the base portion includes being fixed on institute
The support plate 8 on top cover 5 and the base 7 being arranged between the support plate 8 are stated, the axle 6 is fixed between the support plate 8.
Plate 8 is provided with for the installing hole of connecting shaft 6 to be fixed on two boards on top cover 5 and vertical with top cover 5 on support plate 8, wherein,
Base 7 is fixed between two pieces of support plates 8, and grating fibers can be arranged on the relative side of other two of base 7.
Additionally, two fastener holes 11 are provided with support plate, when the sensor is not used (for example in transit), in order to anti-
Only the swing of weight 4 causes optical fiber to be destroyed during transport etc., and the securing members pair such as bolt can be arranged in fastener hole 11
Weight 4 is limited, and prevents the swing of weight 4, so as to prevent induction part to be damaged because excessively swinging.
Optical fiber can be passing through weight 4 by the way of appropriate, it is preferable that is provided with the side of the weight 4 for fixed
The locating slot 14 of the position fiber grating, the locating slot 14 can run through the side of weight 4, and grating fibers are embedded in fixed in which can pass
In the groove 14 of position.It should be noted that weight 4 is preferably shaped to square cylinder, but the application is not limited to this, it is also possible to select
With cylinder or irregular cylinder, and equally locating slot can be set on the weight of these shapes, these are in the present invention
Protection domain within.
The fiber grating of sensor of the invention can pass housing 3 by the way of appropriate, it is preferable that on the top cover 5
It is provided with the access apertures 9 for penetrating the fiber grating；And/or the housing 3 includes bottom 13, on the bottom 13
It is provided with the hole 10 for passing the fiber grating.The fiber grating of the sensor of the application being passed through from top cover 5
Hole 9 is penetrated in housing 3, and the optical fiber is individually fixed in into the weight 4 and institute in the position near the fiber grating two ends
State base portion (housing 3).
Also it may be preferred that as shown in figure 3, the sensor is fixed in external shell (such as inclinometer pipe), on the optical fiber
Multiple fiber gratings are provided with, multiple fiber gratings correspond to multiple housings 3, and the optical fiber is used to connect with (FBG) demodulator 15
Connect.In actual applications, generally connected multiple fiber gratings using a fiber grating, each one sensing of fiber grating correspondence
Device unit, these sensor units can be arranged on the inside of same external shell, such as be fixed on same with inclinometer pipe
On internal face, the hole 10 that the fiber grating can pass through on the bottom 13 of each sensor unit passes the sensor unit
Corresponding housing 3, so as to realize this configuration mode, and finally causes optical fiber with the output wavelength of extraneous detection fiber grating
(FBG) demodulator 15 connects.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as it is without prejudice to this
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (8)
1. a kind of fiber Bragg grating type sensor, it is characterised in that the sensor includes：
Housing (3)；
Weight (4), the weight (4) is arranged on inside the housing (3) and can be when the housing (3) is inclined relative to described
Housing (3) swings；
Optical fiber, is provided with fiber grating on the optical fiber, the optical fiber is solid respectively in the position near the fiber grating two ends
Due to the weight (4) and the housing (3)；
Wherein, the optical fiber at least one end passes the housing (3).
2. sensor according to claim 1, it is characterised in that the optical fiber includes：
First optical fiber (1) and the second optical fiber (2)；Wherein, the fiber grating and second optical fiber (2) of first optical fiber (1)
Fiber grating respectively positioned at the weight (4) offside.
3. sensor according to claim 1 and 2, it is characterised in that the housing (3) is including top cover (5) and is fixed on
Base portion on the top cover (5), the optical fiber is fixed on the base portion in the end near the fiber grating.
4. sensor according to claim 3, it is characterised in that be provided with axle (6), the weight on the housing (3)
(4) it is rotatably mounted in the axle (6).
5. sensor according to claim 4, it is characterised in that the base portion includes being fixed on the top cover (5)
Support plate (8) and the base (7) that is arranged between the support plate (8), the axle (6) is fixed between the support plate (8).
6. sensor according to claim 4, it is characterised in that be provided with for positioning on the side of the weight (4)
The locating slot (14) of the fiber grating.
7. sensor according to claim 3, it is characterised in that be provided with for penetrating the light on the top cover (5)
The access apertures (9) of fine grating；And/or the housing (3) includes bottom (13), it is provided with for wearing on the bottom (13)
Go out the hole (10) of the fiber grating.
8. the sensor according to any one in claim 1-7, it is characterised in that the sensor is fixed on external shell
In vivo, multiple fiber gratings are provided with the optical fiber, multiple fiber gratings correspond to multiple housings (3), the light
Fibre is used to be connected with (FBG) demodulator (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225873.8A CN106643542B (en) | 2016-12-27 | 2016-12-27 | Fiber Bragg grating type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225873.8A CN106643542B (en) | 2016-12-27 | 2016-12-27 | Fiber Bragg grating type sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106643542A true CN106643542A (en) | 2017-05-10 |
| CN106643542B CN106643542B (en) | 2019-11-19 |
Family
ID=58833173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611225873.8A Active CN106643542B (en) | 2016-12-27 | 2016-12-27 | Fiber Bragg grating type sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106643542B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036769A (en) * | 2018-01-11 | 2018-05-15 | 盐城工学院 | A kind of distinguishable direction from temperature compensation fiber grating deviational survey sensor |
| CN108755616A (en) * | 2018-08-22 | 2018-11-06 | 江苏省水利勘测设计研究院有限公司 | A kind of embedded protective device of fibre optical sensor |
| CN109470211A (en) * | 2018-10-18 | 2019-03-15 | 中际物联科技（深圳）有限公司 | A kind of novel optical fiber inclination sensor of stretching structure |
| CN110274576A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of floating plate Dip countion measurement method, system and application for floating roof tank |
| CN113639649A (en) * | 2021-08-10 | 2021-11-12 | 合肥市光感芯科技有限公司 | Strain type roof separation layer sensor based on fiber bragg grating |
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| JP2007205740A (en) * | 2006-01-31 | 2007-08-16 | Tobishima Corp | Tiltmeter using fbg optical fiber sensor |
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| CN101539408A (en) * | 2009-05-07 | 2009-09-23 | 大连理工大学 | Fiber grating inclination sensor of temperature self-compensation type |
| KR20110037313A (en) * | 2009-10-06 | 2011-04-13 | 한국건설기술연구원 | Inclinometer using fiber bragg grating sensor |
| CN102288162A (en) * | 2011-05-23 | 2011-12-21 | 南京航空航天大学 | Tilt angle sensor based on optical fiber Bragg gratings and method for measuring tilt angle of tilt angle sensor |
| CN204177381U (en) * | 2014-09-01 | 2015-02-25 | 南昌工程学院 | A kind of fiber bragg grating inclinometer device |
| CN105180900A (en) * | 2015-08-28 | 2015-12-23 | 中国科学院半导体研究所 | Fiber clinometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007205740A (en) * | 2006-01-31 | 2007-08-16 | Tobishima Corp | Tiltmeter using fbg optical fiber sensor |
| JP2009058239A (en) * | 2007-08-30 | 2009-03-19 | Tobishima Corp | Fbg optical fiber sensor type clinometer |
| CN101539408A (en) * | 2009-05-07 | 2009-09-23 | 大连理工大学 | Fiber grating inclination sensor of temperature self-compensation type |
| KR20110037313A (en) * | 2009-10-06 | 2011-04-13 | 한국건설기술연구원 | Inclinometer using fiber bragg grating sensor |
| CN102288162A (en) * | 2011-05-23 | 2011-12-21 | 南京航空航天大学 | Tilt angle sensor based on optical fiber Bragg gratings and method for measuring tilt angle of tilt angle sensor |
| CN204177381U (en) * | 2014-09-01 | 2015-02-25 | 南昌工程学院 | A kind of fiber bragg grating inclinometer device |
| CN105180900A (en) * | 2015-08-28 | 2015-12-23 | 中国科学院半导体研究所 | Fiber clinometer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036769A (en) * | 2018-01-11 | 2018-05-15 | 盐城工学院 | A kind of distinguishable direction from temperature compensation fiber grating deviational survey sensor |
| CN110274576A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of floating plate Dip countion measurement method, system and application for floating roof tank |
| CN110274576B (en) * | 2018-03-13 | 2021-04-30 | 中国石油化工股份有限公司 | Floating disc inclination angle calculation and measurement method and system for floating roof storage tank and application |
| CN108755616A (en) * | 2018-08-22 | 2018-11-06 | 江苏省水利勘测设计研究院有限公司 | A kind of embedded protective device of fibre optical sensor |
| CN108755616B (en) * | 2018-08-22 | 2024-02-20 | 江苏省水利勘测设计研究院有限公司 | Optical fiber sensor buries protective device |
| CN109470211A (en) * | 2018-10-18 | 2019-03-15 | 中际物联科技（深圳）有限公司 | A kind of novel optical fiber inclination sensor of stretching structure |
| CN113639649A (en) * | 2021-08-10 | 2021-11-12 | 合肥市光感芯科技有限公司 | Strain type roof separation layer sensor based on fiber bragg grating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106643542B (en) | 2019-11-19 |
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