CN106225815A - Fiber Bragg grating sensor and optical fiber Bragg grating sensing device - Google Patents
Fiber Bragg grating sensor and optical fiber Bragg grating sensing device Download PDFInfo
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- CN106225815A CN106225815A CN201610512144.4A CN201610512144A CN106225815A CN 106225815 A CN106225815 A CN 106225815A CN 201610512144 A CN201610512144 A CN 201610512144A CN 106225815 A CN106225815 A CN 106225815A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35316—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
- G01D5/35387—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques using wavelength division multiplexing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
- G01L11/025—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention is applicable to field of sensing technologies, a kind of fiber Bragg grating sensor is provided, including columned elastomer and Fiber Bragg Grating FBG, elastomer includes two end faces and the side of column being parallel to each other, one end face is used for accepting pressure, other end fits in stress body surface, Fiber Bragg Grating FBG is embedded on elastomer and forms the circle coaxial with side, the length that the grid length of Fiber Bragg Grating FBG is embedded on elastomer less than or equal to Fiber Bragg Grating FBG, the two ends elasticity of extension body of Fiber Bragg Grating FBG.The present invention uses and arranges Fiber Bragg Grating FBG formation sensor in cylindrical elastomeric, make use of the relation between longitudinal deformation and transverse deformation, the end face pressure along elastomer is used to produce axial strain and then cause the mode of transverse strain to make the length of Fiber Bragg Grating FBG strain, longitudinal pressure is converted to horizontal strain, that can be designed by the height of elastomer is less, it is thus achieved that superthin structure sensor.
Description
Technical field
The invention belongs to field of sensing technologies, particularly to a kind of fiber Bragg grating sensor and optical fiber Bragg light
Grid sensing device.
Background technology
Current various in-fiber Bragg grating pressure sensors (FBG) great majority use some machinery enhanced sensitivity designs, as
Rhombus Design of Cantilever Beam shown in Fig. 1, by rhombus cantilever beam is applied downward pressure, makes the fiber grating pull of middle part
Stretch elongated, and then make incidence wave change through the echo wavelength of the Bragg grating reflection of inside of optical fibre, according to this ripple
Long change determines pressure size.This structure makes the thickness of sensor relatively greatly, is unfavorable for slimming.As directly by longitudinally executing
Pressure causes the mode of axial deformation that fiber grating is linearly changed with external force change, it is necessary to load various elastic element,
Optical fiber is arranged on elastic element and corresponding force part horizontally set, the most also cannot accomplish ultra-thin, it is difficult to for special
Application scenario, such as the front wind pressure measurement (wind-tunnel, aircraft, high ferro, rocket) of high-speed running objects, the immersed body of high-speed cruising
Dynamic pressure measurement (such as submarine) etc..
Summary of the invention
Present invention is primarily targeted at a kind of fiber Bragg grating sensor of offer, it is intended to solve such sensing of tradition
The problem that device thickness is bigger.
The present invention is achieved in that a kind of fiber Bragg grating sensor, including columned elastomer and light
Fine Bragg grating, described elastomer includes be parallel to each other two end faces and is connected to the column between said two end face
Side, a described end face is used for accepting pressure, and another described end face fits in stress body surface, described optical fiber Bragg
Grating is embedded on described elastomer and forms the circle coaxial with described side, the grid length of described Fiber Bragg Grating FBG less than or
Being embedded in the length on described elastomer equal to described Fiber Bragg Grating FBG, the two ends of described Fiber Bragg Grating FBG are stretched out described
Elastomer.
Another object of the present invention is to provide a kind of optical fiber Bragg grating sensing device, including multiple described optical fiber
Bragg grating sensor, multiple described fiber Bragg grating sensors are connected.
The present invention uses and arranges Fiber Bragg Grating FBG formation sensor in cylindrical elastomeric, make use of longitudinal deformation
And the relation between transverse deformation, uses the end face pressure along elastomer produce axial strain and then cause the side of transverse strain
Formula makes the length of Fiber Bragg Grating FBG strain, and pressure that will be longitudinal is converted to horizontal strain, as such, it is possible to by bullet
It is less that the height of gonosome designs, and i.e. uses the elastomer configuration Fiber Bragg Grating FBG of relatively thin (height is much smaller than diameter) to realize
The detection of pressure.It is ultra-thin that this fiber Bragg grating sensor can do, and is the most relatively applicable to some special environments, the highest
The front wind pressure measurement (wind-tunnel, aircraft, high ferro, rocket) of speed object moving, the dynamic pressure of the immersed body of high-speed cruising is surveyed
Amount (such as submarine) etc..
Accompanying drawing explanation
Fig. 1 is the perspective view of the fiber Bragg grating sensor that the embodiment of the present invention provides；
Fig. 2 is the cross-sectional structural representation of the fiber Bragg grating sensor that the embodiment of the present invention provides；
Fig. 3 is the vertical profile structural representation of the fiber Bragg grating sensor that the embodiment of the present invention provides；
Fig. 4 is the linear structure schematic diagram of the optical fiber Bragg grating sensing device that the embodiment of the present invention provides；
Fig. 5 is the array structure schematic diagram of the optical fiber Bragg grating sensing device that the embodiment of the present invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, and it can be directly separately
On one element or be connected on this another element.When an element is referred to as " being connected to " another element, and it is permissible
It is directly to another element or is indirectly connected to this another element.
Also, it should be noted the orientation term such as left and right, upper and lower in the embodiment of the present invention, it it is only relative concept each other
Or with the normal operating condition of product as reference, and should not be regarded as restrictive.
Referring to accompanying drawing 1～3, the embodiment of the present invention provides a kind of fiber Bragg grating sensor, including columned
Elastomer 10 and Fiber Bragg Grating FBG 20, elastomer 10 includes be parallel to each other two end faces 101 and is connected to two
The side 102 of the column between end face 101, an end face 101 is used for accepting pressure, and other end 101 fits in stress object
Surface, Fiber Bragg Grating FBG 20 is embedded on elastomer 10 and forms the circle coaxial with side 102 or arcuate structure 201, light
The grid length (i.e. the length of light gate part 2011) of fine Bragg grating 20 is embedded in elasticity less than or equal to Fiber Bragg Grating FBG 20
Circle on body 10 or the length of arcuate structure 201, the end 202 elasticity of extension body 10 of Fiber Bragg Grating FBG 20.This optical fiber
Bragg grating 20 is the heliosensitivity utilizing fiber optic materials, is write by incident illumination coherent field pattern by the method for ultraviolet photoetching
Fibre core, produces the refractive index periodic along fibre core is axial in fibre core and changes, thus form the phase grating in space, and it acts on real
In fibre core, arrowband (transmission or reflection) wave filter or reflecting mirror is formed in matter.When light beam is through optical fiber Bragg
During grating, generation is reflected by the wavelength meeting fiber grating Bragg condition, and remaining wavelength continues through Fiber Bragg Grating FBG
Resume defeated.When the grid length of Bragg grating changes, the wavelength of its echo can offset when incident, therefore root
May determine that according to this side-play amount the length of Fiber Bragg Grating FBG 20 changes, be to be caused by external pressure as this length changes,
Then should there is the corresponding relation of pressure and length variable quantity, may determine that pressure size according to this corresponding relation.
The present embodiment uses above-mentioned Fiber Bragg Grating FBG 20 sensor measurement external pressure, and elastomeric material is in elastic deformation
In the range of, can deform upon when being under pressure, it is assumed that deformation quantity is Δ L, raw footage is L, covariant ε=Δ L/L, when by longitudinally
During pressure, its longitudinal strain is directly proportional to transverse strain, i.e. material is while being deformed by longitudinal stress, and it is horizontal
To deforming the most therewith.Following relationship is there is: ε x=-ν ε y, the ν in formula are referred to as pool between transverse strain ε x and longitudinal strain ε y
Pine ratio.The present embodiment is above-mentioned slim pressure (pressure) sensor fiber Bragg grating sensing based on this principle design
Device.Concrete principle is as follows:
Cylindrical elastomer 10 is attached at body surface, and one end 101 is fitted with body surface, other end 101
Expose, be used for accepting pressure, when external force perpendicular acting is at this stress end face 101, make elastomer 10 be compressed axially, basis simultaneously
Above-mentioned relation formula, there is lateral magnification in it simultaneously, and then, embed the circle coaxial with elastomer side 102 within elastomer 10
Shape or arc Fiber Bragg Grating FBG 20 are expanded the most therewith, and its diameter is increased, and the increase amplitude on different directions
Identical, present embodiment assumes that the deflection of elastomer 10 height in its natural state and height is respectively L and Δ L, natural shape
Diameter and the deflection of diameter under state are respectively D and Δ D, have Δ D=-ν Δ L, and Fiber Bragg Grating FBG 20 is in naturalness
Under grid length and the long variable quantity of grid be respectively d and Δ d, external force pressure is P, Fiber Bragg Grating FBG 20 in its natural state anti-
The a length of λ of ejected wave, the reflection wavelength variable quantity after deformation is Δ λ.So, the girth of elastomer 10 increases Δ D π, then Bradley
The covariant of the grid length part of lattice grating is Δ d/d=Δ D π/D π=Δ λ/λ, according to above formula: Δ D/D=Δ λ/λ, and then
Δ D=D Δ λ/λ.Due to pressure P=E* (Δ L/L), Δ L=Δ D/ ν, release pressure size P=E* Δ D/ ν L=E*D Δ λ/
vLλ.Wherein, E is the elastic modelling quantity of elastomer 10, and Δ λ can be obtained by measurement, and E, D, λ, ν, L are precognition amount, as such, it is possible to logical
The variable quantity crossing above-mentioned formula and reflection wavelength determines the size of pressure.
Embodiment of the present invention employing arranges Fiber Bragg Grating FBG 20 in cylindrical elastomeric 10 and forms sensor, utilizes
Relation between longitudinal deformation and transverse deformation, use the end face 101 along elastomer 10 press produce axial strain and then
The mode causing transverse strain makes the length of Fiber Bragg Grating FBG 20 strain, and pressure that will be longitudinal is converted to horizontal
Strain, as such, it is possible to that is designed by the height of elastomer 10 is less, i.e. uses the elastomer 10 of relatively thin (height is much smaller than diameter)
Configuration Fiber Bragg Grating FBG 20 realizes the detection of pressure.It is ultra-thin that this Fiber Bragg Grating FBG 20 can do, the most applicable
In the front wind pressure measurement (wind-tunnel, aircraft, high ferro, rocket) of some special environments, such as high-speed running objects, high-speed cruising
The dynamic pressure measurement (such as submarine) etc. of immersed body.
In embodiments of the present invention, the elastomer 10 of dual extension-compression modulus can be chosen according to different needs.Low pressure is used
Way can use silica gel, range 0-1Mpa；Medium range can use beryllium copper, nylon, range 0-10Mpa；Greater amount journey can use bullet
The material such as steel that property modulus is bigger.The principle of measurement range selection is, selects within yield strength half.Surrender such as red copper is strong
Degree is 33.3Mpa, then select range not exceed 15Mpa.
In the present embodiment, its Poisson's ratio stable and consistent of the material requirements of elastomer 10, have good high temperature performance and
Long-term stability, is not easily susceptible to ultraviolet damage, has relatively low temperature sensitivity.Can pass through Shooting Technique when making will
Fiber Bragg Grating FBG 20 is cured in elastomer 10, or uses glue that Fiber Bragg Grating FBG 20 is fixed on elasticity ringwise
In body 10, optical fiber need to stretch, tighten, but can not have excessive stresses.Pass through tool, it is ensured that the positional precision of grating and concordance.
Owing to bare fibre is the most crisp, the diameter of elastomer 10 is unsuitable too small, and preferably greater than 10mm, such as but not limited to 10-20 millimeter, thickness
It is preferably but not limited to as 0.5-5 millimeter.
In the present embodiment, Fiber Bragg Grating FBG 20 preferably presses close to the surface configuration of side 102 so that it is produce bigger
Deformation, and then promote the scope of its detection.
Specifically, it is internal that Fiber Bragg Grating FBG 20 can embed elastomer 10, interior near the side 102 of elastomer 10
Surface configuration.Such as one-body molded and go out by Shooting Technique by making material and the Fiber Bragg Grating FBG 20 of elastomer 10.
In other embodiments, such as Fig. 2, Fiber Bragg Grating FBG 20 can be attached at the surface of elastomer side 102 and by solidification
Glue 30 is coated and fixed.In another embodiment, such as Fig. 3, the annular groove 40 coaxial with side 102, optical fiber can be offered in side 102
In Bragg grating 20 is arranged at annular groove 40 and sealed by colloid 50.It addition, can set on end face 101 surface of elastomer
Put adhesive linkage 60, for elastomer 10 is arranged on body surface.
In the present embodiment, the end 202 of Fiber Bragg Grating FBG 20 elasticity of extension body 10 is covered in stress by covering
The surface of object, the diameter of this Fiber Bragg Grating FBG 20 is much smaller than the thickness of covering, in order to avoid by high-pressure blast or high pressure water flushing
Breaking up bad, it can effectively prevent optical fiber fragmentation, the most attractive in appearance.Preferably, Fiber Bragg Grating FBG 20 is straight
Footpath is 0.125mm, but is not limited to this size.Above-mentioned covering can be paint or glue.Certainly, the end of this optical fiber can also
Weld or be embedded in testee surface, thinking that long-term measurement is used.
In the present embodiment, bare fibre can be used and its exposed parts is covered to protect, and some occasion is not
Need to bury, hide, then need the Fibre Optical Sensor of protection set.For reaching the requirements such as tension, mouse bite preventing, anticollision, can use
Armored fiber optic is as the extraction optical fiber of the present embodiment.
The fiber Bragg grating sensor that the embodiment of the present invention provides can be used alone, it is possible to by wavelength division multiple access level
Connection.Therefore, the present invention further provides a kind of optical fiber Bragg grating sensing device, such as Fig. 4 and Fig. 5, including multiple above-mentioned
Fiber Bragg grating sensor, multiple fiber Bragg grating sensors are connected, the most linear, it is also possible to for array
Shape.Specifically, multiple fiber Bragg grating sensors are connected by stretching out the fiber segment outside its elastomer 10, or share one
Root optical fiber 70, it is long that the part in the optical fiber each elastomer 10 of embedding has predetermined grid.An optical fiber 70 is i.e. used to connect multiple
Sensor, and the centre wavelength of the Fiber Bragg Grating FBG 20 of these multiple sensors can be identical, it is also possible to different.Such as first
The centre wavelength of individual sensor is 1540nm, and the centre wavelength of second sensor is 1542nm, the center of the 3rd sensor
Wavelength is 1544nm, can connect several, tens, hundreds of the most.Receive (FBG) demodulator and receive different spectrum, survey
Measure the displacement of each spectrum to complete to measure.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Any amendment, equivalent or the improvement etc. made within principle, should be included within the scope of the present invention.
Claims (10)
1. a fiber Bragg grating sensor, it is characterised in that include columned elastomer and optical fiber Bragg light
Grid, described elastomer includes be parallel to each other two end faces and the side of column being connected between said two end face, one
Individual described end face is used for accepting pressure, and another described end face fits in stress body surface, and described Fiber Bragg Grating FBG is embedded in
On described elastomer and form the circle coaxial with described side, the grid length of described Fiber Bragg Grating FBG is less than or equal to described
Fiber Bragg Grating FBG is embedded in the length on described elastomer, and described elastomer is stretched out at the two ends of described Fiber Bragg Grating FBG.
2. fiber Bragg grating sensor as claimed in claim 1, it is characterised in that described Fiber Bragg Grating FBG is built-in
In described elastomer, or it is attached at the surface of the side of described elastomer and is coated and fixed by solidification glue.
3. fiber Bragg grating sensor as claimed in claim 1, it is characterised in that described side opening is provided with and described side
The annular groove that face is coaxial, in described Fiber Bragg Grating FBG is arranged at described annular groove and is sealed by colloid.
4. fiber Bragg grating sensor as claimed in claim 1, it is characterised in that described Fiber Bragg Grating FBG stretches out
The part of described elastomer is covered in the surface of described stress object by covering, and the diameter of described Fiber Bragg Grating FBG is less than
The thickness of described covering.
5. fiber Bragg grating sensor as claimed in claim 4, it is characterised in that described Fiber Bragg Grating FBG straight
Footpath is 0.125mm.
6. the fiber Bragg grating sensor stated such as claim 4 or 5, it is characterised in that the diameter of described elastomer is more than
10mm。
7. the fiber Bragg grating sensor stated such as claim 1, it is characterised in that the height of described elastomer is less than described
The diameter of side.
8. an optical fiber Bragg grating sensing device, it is characterised in that include multiple as described in any one of claim 1 to 7
Fiber Bragg grating sensor, multiple described fiber Bragg grating sensors connect.
9. optical fiber Bragg grating sensing device as claimed in claim 8, it is characterised in that multiple described optical fiber Bragg light
Gate sensor is connected by stretching out the fiber segment outside its elastomer, or multiple described fiber Bragg grating sensor shares one
Root optical fiber.
10. optical fiber Bragg grating sensing device as claimed in claim 8 or 9, it is characterised in that multiple described optical fiber Bradleys
The centre wavelength of lattice grating sensor is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512144.4A CN106225815B (en) | 2016-06-30 | 2016-06-30 | Fiber Bragg grating sensor and optical fiber Bragg grating sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512144.4A CN106225815B (en) | 2016-06-30 | 2016-06-30 | Fiber Bragg grating sensor and optical fiber Bragg grating sensing device |
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| Publication Number | Publication Date |
|---|---|
| CN106225815A true CN106225815A (en) | 2016-12-14 |
| CN106225815B CN106225815B (en) | 2018-08-31 |
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| CN201610512144.4A Expired - Fee Related CN106225815B (en) | 2016-06-30 | 2016-06-30 | Fiber Bragg grating sensor and optical fiber Bragg grating sensing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152449A (en) * | 2017-06-30 | 2017-09-12 | 大连理工大学 | It is a kind of that the intelligent gasket device that monitoring bolt loosens is used for based on fiber grating |
| CN107246931A (en) * | 2017-07-11 | 2017-10-13 | 中国矿业大学 | A kind of lateral stressed strain transducer of fiber grating and detection method |
| CN113504736A (en) * | 2021-06-03 | 2021-10-15 | 清华大学 | Large-flexibility aircraft load shedding control experiment system and method |
| CN114136214A (en) * | 2021-12-02 | 2022-03-04 | 中国人民解放军军事科学院国防科技创新研究院 | Displacement sensor based on double-rigidity square wave-shaped structure |
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| JP2002162211A (en) * | 2000-11-22 | 2002-06-07 | Mitsubishi Heavy Ind Ltd | Strain measuring device and its installing method |
| CN2705777Y (en) * | 2004-03-18 | 2005-06-22 | 上海紫珊光电技术有限公司 | Slotted structure elastomer optical fiber rastor strain sensor head |
| CN101762309A (en) * | 2009-12-24 | 2010-06-30 | 济南金钟电子衡器股份有限公司 | Fiber bragg grating weighting sensor |
| CN102175364A (en) * | 2011-02-28 | 2011-09-07 | 河南理工大学 | Vertical stress fiber grating pressure sensor for analog simulation experiment |
| CN202305097U (en) * | 2011-11-07 | 2012-07-04 | 武汉理工大学 | Fiber bragg grating pressure sensor with temperature compensation function |
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- 2016-06-30 CN CN201610512144.4A patent/CN106225815B/en not_active Expired - Fee Related
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| JP2002162211A (en) * | 2000-11-22 | 2002-06-07 | Mitsubishi Heavy Ind Ltd | Strain measuring device and its installing method |
| CN2705777Y (en) * | 2004-03-18 | 2005-06-22 | 上海紫珊光电技术有限公司 | Slotted structure elastomer optical fiber rastor strain sensor head |
| CN101762309A (en) * | 2009-12-24 | 2010-06-30 | 济南金钟电子衡器股份有限公司 | Fiber bragg grating weighting sensor |
| CN102175364A (en) * | 2011-02-28 | 2011-09-07 | 河南理工大学 | Vertical stress fiber grating pressure sensor for analog simulation experiment |
| CN202305097U (en) * | 2011-11-07 | 2012-07-04 | 武汉理工大学 | Fiber bragg grating pressure sensor with temperature compensation function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152449A (en) * | 2017-06-30 | 2017-09-12 | 大连理工大学 | It is a kind of that the intelligent gasket device that monitoring bolt loosens is used for based on fiber grating |
| CN107246931A (en) * | 2017-07-11 | 2017-10-13 | 中国矿业大学 | A kind of lateral stressed strain transducer of fiber grating and detection method |
| CN113504736A (en) * | 2021-06-03 | 2021-10-15 | 清华大学 | Large-flexibility aircraft load shedding control experiment system and method |
| CN114136214A (en) * | 2021-12-02 | 2022-03-04 | 中国人民解放军军事科学院国防科技创新研究院 | Displacement sensor based on double-rigidity square wave-shaped structure |
| CN114136214B (en) * | 2021-12-02 | 2024-03-26 | 中国人民解放军军事科学院国防科技创新研究院 | Displacement sensor based on double-rigidity square wave-shaped structure |
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