CN108196208A - A kind of ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor - Google Patents
A kind of ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor Download PDFInfo
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- CN108196208A CN108196208A CN201810126631.6A CN201810126631A CN108196208A CN 108196208 A CN108196208 A CN 108196208A CN 201810126631 A CN201810126631 A CN 201810126631A CN 108196208 A CN108196208 A CN 108196208A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000005538 encapsulation Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
- G01R33/0327—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect with application of magnetostriction
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The present invention provides a kind of ultra-magnetic telescopic magnetic field sensors based on new micro fiber-optic grating sensor, belong to technical field of optical fiber sensing.The sensor includes giant magnetostrictive material, length L；Mini optical fibre grating sensor, including uniform optical fiber Bragg raster, wherein fiber grating length is l；Casing is encapsulated, length is (L l)/2；It is longitudinally arranged along giant magnetostrictive material, i.e. magnetostriction direction；Replaceable mini optical fibre grating sensor fixture, including clamping plate and bolt.The present invention has the advantages that sensitivity is big, and stability is good, and fast response time is simple in structure, easy for installation, strong applicability.
Description
Technical field
The invention belongs to fiber grating sensing technology field, it is related to a kind of based on new micro fiber-optic grating sensor
Ultra-magnetic telescopic magnetic field sensor.
Background technology
With development in science and technology, the application in magnetic field is more and more extensive, mineral reserve detection, earthquake prediction, medical treatment into
The fields such as picture, electrical engineering have increasingly highlighted its importance.Therefore accurate effective measure is carried out to magnetic field to be of great significance.
The common Measurement Method for Magnetic Field in China mainly has magnetic method, electromagnetic induction method, magnetic saturation method, Hall effect method, magnetic resistance effect at present
Answer method etc., the magnetic field sensor of different principle has the characteristics that different, correspondingly also there is different application scenarios and use condition,
It is normally only strong suitable for low temperature environment and relatively due to non-linear and the dependence of temperature is limited by its such as magnetoresistance method
Magnetic field.Changes of magnetic field is converted into the strain variation of giant magnetostrictive material by the present invention, is measured by fiber grating sensing technology
Strain variation carrys out indirect determination changes of magnetic field, gives full play to the advantage of fiber grating sensing technology, high certainty of measurement, response speed
Soon, long-time stability are good；And the magnetic field sensor is simple in structure, strong applicability, application prospect is good.
However, the use of the more ultra-magnetic telescopic magnetic field sensor based on fiber grating is at present that fiber grating is direct
It is pasted onto on giant magnetostrictive rod, the length of giant magnetostrictive rod is usually smaller, usually low there is sensitivity, stability difference etc.
Problem.
Invention content
The technical problems to be solved by the invention are：A kind of super mangneto based on new micro fiber-optic grating sensor is provided
Flexible magnetic field sensor, to improve detection sensitivity and stability, compared to the direct bonding method of bare optical fibers and bare optical gratings, sensitivity can carry
L/l times high, wherein L is the length of giant magnetostrictive material, and l is the length of fiber grating, andSensor uses fixture shape
Formula is fixed, and peace tears simplicity open, and stability is good.
Technical scheme of the present invention：
A kind of ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor, it is described based on novel micro-
The ultra-magnetic telescopic magnetic field sensor of type fiber-optic grating sensor includes giant magnetostrictive material 1 and along its magnetostriction direction cloth
The new micro fiber-optic grating sensor 2 put；
The giant magnetostrictive material 1 be using cylinder or cuboid made of TeDyFe materials, by fixture with
Mini optical fibre grating sensor is fixed；The length direction of the giant magnetostrictive material 1 be magnetostriction direction, magnetostriction
Coefficient is 1500~2000ppm；The giant magnetostrictive material 1 does slot treatment along its length, and slot cross-section is semicircle,
Diameter dgIt is equal with encapsulation 5 diameter D of casing；
The mini optical fibre grating sensor 2 includes uniform optical fiber Bragg raster 4 and encapsulation casing 5；Described is miniature
Fiber-optic grating sensor length LwEqual with 1 length L of giant magnetostrictive material, mini optical fibre grating sensor is along ultra-magnetic telescopic
1 length direction of material is arranged in its slot；
The encapsulation casing 5 is arranged in uniform 4 both ends of optical fiber Bragg raster, and length is (L-l)/2；
The mini optical fibre grating sensor fixture includes clamping plate 6 and bolt 7, is tightly fastened clamping plate 6 by bolt 7
In 1 length direction both ends of giant magnetostrictive material.
The length L of the giant magnetostrictive material 1 is selected according to actual use, and more than mini optical fibre grating sensor
In uniform optical fiber Bragg raster length l.
The top clamping plate 6 of mini optical fibre grating sensor fixture does slot treatment, and slot cross-section is semicircle, diameter of section db
It is equal with encapsulation 5 diameter D of casing.
The encapsulation casing 5 is made of the higher steel pipe of elasticity modulus, E ≈ 200GPa；The encapsulation casing 5, with
Uniform 4 fiber section of optical fiber Bragg raster is combined closely by epoxy resin or the realization of esters of acrylic acid gluing.
The mini optical fibre grating sensor fixture replaceable.
Beneficial effects of the present invention：The ultra-magnetic telescopic magnetic field based on new micro fiber-optic grating sensor of the present invention passes
Sensor, mini optical fibre grating sensor is self-developing, including uniform optical fiber Bragg raster；Encapsulate casing, by elasticity modulus compared with
High steel pipe is made (E ≈ 200GPa).Since the elasticity modulus of encapsulation casing is sufficiently large, under use environment, deflection is small, can
Ignore, so the magnitude of magnetostriction Δ L of the giant magnetostrictive material under magnetic fields is equal to fiber grating stroke Δ l so that
Ultra-magnetic telescopic magnetic field sensor detection sensitivity can improve L/l times, and encapsulated mini optical fibre grating sensor stability is bright
It is aobvious to improve；Replaceable mini optical fibre grating sensor fixture is introduced, is fixed by bolts, easy for installation, stability is good；And simultaneously
It is simple in structure with fast response time, the advantages that strong applicability.
Description of the drawings
Fig. 1 is the ultra-magnetic telescopic magnetic field sensor structure provided by the invention based on new micro fiber-optic grating sensor
Schematic diagram.
Fig. 2 is the ultra-magnetic telescopic magnetic field sensor axis provided by the invention based on new micro fiber-optic grating sensor
Sectional view.
Fig. 3 is new micro fiber-optic grating sensor axial section.
In figure：1 giant magnetostrictive material；2 mini optical fibre grating sensors；
3 mini optical fibre grating sensor fixtures；4 uniform optical fiber Bragg rasters；5 encapsulation casings；6 clamping plates；
7 bolts.
Specific embodiment
Below in conjunction with the accompanying drawings and technical solution, the invention will be further described, but does not limit the present invention.
Ultra-magnetic telescopic magnetic field sensor axial section provided by the invention based on new micro fiber-optic grating sensor
Figure shows with shaft section figure such as Fig. 1,2：The new micro optical fiber arranged including giant magnetostrictive material 1 and along its magnetostriction direction
Grating sensor 2；
The giant magnetostrictive material 1 is using cylinder or cuboid made of TeDyFe materials, passes through miniature light
Fiber grating sensor fixture is fixed；The length direction of the giant magnetostrictive material 1 be magnetostriction direction, magnetostriction system
Number is 1500~2000ppm；The giant magnetostrictive material 1 does slot treatment along its length, and slot cross-section is semicircle, directly
Diameter dgIt is equal with encapsulation 5 diameter D of casing；
The mini optical fibre grating sensor 2 includes uniform optical fiber Bragg raster 4 and encapsulation casing 5；Described is miniature
Fiber-optic grating sensor length LwEqual with 1 length L of giant magnetostrictive material, mini optical fibre grating sensor is along ultra-magnetic telescopic
1 length direction of material is arranged in its slot；
The encapsulation casing 5 is arranged in uniform 4 both ends of optical fiber Bragg raster, and length is (L-l)/2；
The mini optical fibre grating sensor fixture includes clamping plate 6 and bolt 7, is tightly fastened clamping plate 6 by bolt 7
In 1 length direction both ends of giant magnetostrictive material.
The length L of the giant magnetostrictive material 1 is selected according to actual use, and more than mini optical fibre grating sensor
In uniform optical fiber Bragg raster length l.
The top clamping plate 6 of mini optical fibre grating sensor fixture does slot treatment, and slot cross-section is semicircle, diameter of section db
It is equal with encapsulation 5 diameter D of casing.
The encapsulation casing 5 is made of the higher steel pipe of elasticity modulus, E ≈ 200GPa；The encapsulation casing 5, with
Uniform 4 fiber section of optical fiber Bragg raster is combined closely by epoxy resin or the realization of esters of acrylic acid gluing.
The present invention is based on ultra-magnetic telescopic magnetic field sensor operation principle such as Fig. 1 institutes of new micro fiber-optic grating sensor
Show：Giant magnetostrictive material 1 generates stretching strain (or compressive strain), new micro light along its length under extraneous magnetic fields
The magnetic flux density that fiber grating sensor 2 is acted on by measuring the strain measurement of length direction on magnetostriction materials 1.
The ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor, by measuring fiber grating
Wavelength shift measurement acts on the magnetic field of giant magnetostrictive material.
Claims (8)
1. a kind of ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor, which is characterized in that described
Ultra-magnetic telescopic magnetic field sensor based on new micro fiber-optic grating sensor includes giant magnetostrictive material (1) and along its magnetic
Cause the new micro fiber-optic grating sensor (2) of telescopic direction arrangement；
The giant magnetostrictive material (1) be using cylinder or cuboid made of TeDyFe materials, by fixture with it is micro-
Type fiber-optic grating sensor is fixed；The length direction of the giant magnetostrictive material (1) be magnetostriction direction, magnetostriction
Coefficient is 1500~2000ppm；The giant magnetostrictive material (1) does slot treatment along its length, and slot cross-section is semicircle
Shape, diameter dgIt is equal with encapsulation casing (5) diameter D；
The mini optical fibre grating sensor includes uniform optical fiber Bragg raster (4) and encapsulation casing (5)；Described is miniature
Fiber-optic grating sensor length LwEqual with giant magnetostrictive material (1) length L, mini optical fibre grating sensor is stretched along super mangneto
Compression material (1) length direction is arranged in its slot；
The encapsulation casing (5) is arranged in uniform optical fiber Bragg raster (4) both ends, and length is (L-l)/2；
The mini optical fibre grating sensor fixture includes clamping plate (6) and bolt (7), by bolt (7) that clamping plate (6) is close
It is fixed on giant magnetostrictive material (1) length direction both ends.
2. the ultra-magnetic telescopic magnetic field sensor according to claim 1 based on new micro fiber-optic grating sensor,
It is characterized in that, the length L of the giant magnetostrictive material (1) is selected according to actual use, and is passed more than mini optical fibre grating
The length l of uniform optical fiber Bragg raster (4) in sensor (2).
3. the ultra-magnetic telescopic magnetic field sensor according to claim 1 or 2 based on new micro fiber-optic grating sensor,
It is characterized in that, the top clamping plate (6) of mini optical fibre grating sensor fixture does slot treatment, slot cross-section is semicircle, section
Diameter dbIt is equal with encapsulation casing (5) diameter D.
4. the ultra-magnetic telescopic magnetic field sensor according to claim 1 or 2 based on new micro fiber-optic grating sensor,
It is characterized in that, the encapsulation casing (5), is made of the higher steel pipe of elasticity modulus, E ≈ 200GPa；The package cover
It manages (5), is combined closely with uniform optical fiber Bragg raster (4) fiber section by epoxy resin or the realization of esters of acrylic acid gluing.
5. the ultra-magnetic telescopic magnetic field sensor according to claim 3 based on new micro fiber-optic grating sensor,
It is characterized in that, the encapsulation casing (5) is made, E ≈ 200GPa of the higher steel pipe of elasticity modulus；The encapsulation casing
(5), it is combined closely with uniform optical fiber Bragg raster (4) fiber section by epoxy resin or the realization of esters of acrylic acid gluing.
6. the ultra-magnetic telescopic magnetic field sensing based on new micro fiber-optic grating sensor according to claim 1,2 or 5
Device, which is characterized in that the mini optical fibre grating sensor fixture replaceable.
7. the ultra-magnetic telescopic magnetic field sensor according to claim 3 based on new micro fiber-optic grating sensor,
It is characterized in that, the mini optical fibre grating sensor fixture replaceable.
8. the ultra-magnetic telescopic magnetic field sensor according to claim 4 based on new micro fiber-optic grating sensor,
It is characterized in that, the mini optical fibre grating sensor fixture replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126631.6A CN108196208B (en) | 2018-02-07 | 2018-02-07 | Super magnetostriction magnetic field sensor based on novel miniature fiber bragg grating sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126631.6A CN108196208B (en) | 2018-02-07 | 2018-02-07 | Super magnetostriction magnetic field sensor based on novel miniature fiber bragg grating sensor |
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| Publication Number | Publication Date |
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| CN108196208A true CN108196208A (en) | 2018-06-22 |
| CN108196208B CN108196208B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810126631.6A Active CN108196208B (en) | 2018-02-07 | 2018-02-07 | Super magnetostriction magnetic field sensor based on novel miniature fiber bragg grating sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957364A (en) * | 2018-07-04 | 2018-12-07 | 兰州大学 | A kind of magnetic field sensor and Measurement Method for Magnetic Field |
| CN110554251A (en) * | 2019-09-09 | 2019-12-10 | 中国电力科学研究院有限公司 | Electric field intensity measuring sensor and electric field intensity measuring device comprising same |
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| CN2646718Y (en) * | 2003-08-01 | 2004-10-06 | 中国科学院半导体研究所 | Magnetostriction type optical fiber raster current sensor |
| CN101324448A (en) * | 2008-07-28 | 2008-12-17 | 西安石油大学 | Encapsulation apparatus for exerting prestress of optical fiber grating sensor |
| CN101598773A (en) * | 2009-07-02 | 2009-12-09 | 西北工业大学 | A kind of magnetic induction intensity sensing head and magnetic induction intensity measurement method and device thereof |
| CN101833022A (en) * | 2009-03-09 | 2010-09-15 | 西北工业大学 | Sensing head of fiber Bragg grating current sensor and making method thereof |
| CN101833023A (en) * | 2009-03-09 | 2010-09-15 | 西北工业大学 | Sensing head of temperature self-compensating fiber grating current sensor and manufacturing method thereof |
| CN102230834A (en) * | 2011-06-03 | 2011-11-02 | 大连理工大学 | Fiber grating cable tension transducer with temperature self-compensation function |
| CN103760504A (en) * | 2014-01-16 | 2014-04-30 | 昆明理工大学 | Fiber Bragg optical grating spatial magnetic field intensity sensor based on giant magnetostriction materials and use method of fiber Bragg optical grating spatial magnetic field intensity sensor |
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2018
- 2018-02-07 CN CN201810126631.6A patent/CN108196208B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646718Y (en) * | 2003-08-01 | 2004-10-06 | 中国科学院半导体研究所 | Magnetostriction type optical fiber raster current sensor |
| CN101324448A (en) * | 2008-07-28 | 2008-12-17 | 西安石油大学 | Encapsulation apparatus for exerting prestress of optical fiber grating sensor |
| CN101833022A (en) * | 2009-03-09 | 2010-09-15 | 西北工业大学 | Sensing head of fiber Bragg grating current sensor and making method thereof |
| CN101833023A (en) * | 2009-03-09 | 2010-09-15 | 西北工业大学 | Sensing head of temperature self-compensating fiber grating current sensor and manufacturing method thereof |
| CN101598773A (en) * | 2009-07-02 | 2009-12-09 | 西北工业大学 | A kind of magnetic induction intensity sensing head and magnetic induction intensity measurement method and device thereof |
| CN102230834A (en) * | 2011-06-03 | 2011-11-02 | 大连理工大学 | Fiber grating cable tension transducer with temperature self-compensation function |
| CN103760504A (en) * | 2014-01-16 | 2014-04-30 | 昆明理工大学 | Fiber Bragg optical grating spatial magnetic field intensity sensor based on giant magnetostriction materials and use method of fiber Bragg optical grating spatial magnetic field intensity sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957364A (en) * | 2018-07-04 | 2018-12-07 | 兰州大学 | A kind of magnetic field sensor and Measurement Method for Magnetic Field |
| CN110554251A (en) * | 2019-09-09 | 2019-12-10 | 中国电力科学研究院有限公司 | Electric field intensity measuring sensor and electric field intensity measuring device comprising same |
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| Publication number | Publication date |
|---|---|
| CN108196208B (en) | 2024-02-06 |
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