CN106768506A - A kind of magnetic flux transducer for the detection of ferrimagnet internal force - Google Patents
A kind of magnetic flux transducer for the detection of ferrimagnet internal force Download PDFInfo
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- CN106768506A CN106768506A CN201710070430.4A CN201710070430A CN106768506A CN 106768506 A CN106768506 A CN 106768506A CN 201710070430 A CN201710070430 A CN 201710070430A CN 106768506 A CN106768506 A CN 106768506A
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- China
- Prior art keywords
- magnetic flux
- flux transducer
- coil wire
- ferrimagnet
- wiring terminal
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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
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
This application discloses a kind of magnetic flux transducer for the detection of ferrimagnet internal force, the magnetic flux transducer includes internal wiring terminal, external wiring terminal and flexible winding band；Wherein, the internal wiring terminal and external wiring terminal are respectively fixedly connected with the two ends of the flexible winding band, and the flexible winding band includes the excitation coil wire and measuring coil wire in flexible insulation base and the insertion flexible insulation base；The two ends of the excitation coil wire and measuring coil wire are connected with magnet exciting coil interface and measuring coil interface in internal wiring terminal and external wiring terminal respectively.The application proposes the two halves formula structure of a kind of coil type magnetic flux transducer, its fixed coil reel structure for being mainly characterized by being instead of using extensible banded structure traditional closed type magnetic flux transducer, or conventional open-loop formula magnetic flux transducer；It has that winding principle is simple, process is simple, the advantages of being suitable to batch micro operations, cost can be greatly lowered.
Description
Technical field
The invention belongs to structure detection field, and in particular to a kind of magnetic flux sensing for the detection of ferrimagnet internal force
Device.
Background technology
When ferrimagnet is acted on by external force, its internal generation mechanical stress or strain, correspondingly magnetic conductivity generation
Change, determine magnetic conductivity change, it is possible to know STRESS VARIATION, based on the magnetic flux transducer that this magnetoelasticity makes, can
Measured with the mechanical stress to ferrimagnet.
Typical flux sensor is made up of magnetizing coil (primary coil) and measuring coil (secondary coil).In excitatory line
Apply pumping signal on circle, alternating magnetic field will be produced, the magnetic field will produce induced electromotive force in measuring coil, to the sense
Motional electromotive force carries out time integral, can produce output voltage, the output voltage and the relative magnetic in coil at measuring coil two ends
There is certain relation in conductance, by determining the output voltage, structure of ferromagnetic material is carried out some groups of stress, at a temperature of carry out
Experiment, sets up relative permeability change and structural stress, the relation of temperature, it is possible to realize measurement ferromagnetic structure part stress
Purpose.
At present, most typical application is measurement drag-line internal force to magnetic flux transducer in the industry.Practical application mainly
Closed type magnetic flux transducer, is that sleeve type installs (such as FS-CCTB types of Jiangxi Fashion Technology Co., Ltd.), due to drag-line two
End suffers restraints, thus typically can only while drag-line is installed by sensor sleeve on cable body, if drag-line is installed, one
As can only be used by the method for live coiling, using there is larger limitation, but do not solve preferably for a long time
Method.The structure of open loop type magnetic flux transducer is two halves formula, is mainly used in the long term monitoring in construction later stage, to constructing without special
It is required that, it is clipped at drag-line protection pipe, install and easy to maintenance, the limitation without the construction time limit, such as Application No.
201310718127.2 patent of invention and and the application for a patent for invention of Application No. 201510093450.4 disclosed in
Open loop type magnetic flux transducer, but due to the reason such as relatively costly, the application of current open loop type magnetic flux transducer still has compared with overall situation
Limit.
The bore radio telescope FAST the biggest in the world for having built up at present, its primary reflection surface is supported by rope net
, the rope net is made up of about 7000 cable wires.Whole rope net is again by the annular ring beam structure supports of diameter 500m.In telescope fortune
Between the departure date, to structural internal force especially rope Internal Force Monitoring requirement it is higher, due to may need monitoring point quantity it is more, to pass
Cost and the ease for use requirement of sensor are very high.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of for the inspection of ferrimagnet internal force
The magnetic flux transducer of survey, its fixed coil that traditional closed type magnetic flux transducer is instead of using extensible banded structure
Reel structure, or conventional open-loop formula magnetic flux transducer two halves formula structure；It has that winding principle is simple, process is simple,
The advantages of being suitable to batch micro operations, cost can be greatly lowered.
To achieve the above object, the present invention uses following technical scheme：
A kind of magnetic flux transducer for the detection of ferrimagnet internal force, the magnetic flux transducer includes internal wiring end
Son, external wiring terminal and flexible winding band；Wherein, the internal wiring terminal and external wiring terminal are respectively fixedly connected with described soft
Property winding band two ends, the flexible winding band includes the excitation coil in flexible insulation base and the insertion flexible insulation base
Wire and measuring coil wire；The two ends of the excitation coil wire and measuring coil wire respectively with internal wiring terminal and external
Magnet exciting coil interface and measuring coil interface connection in line terminals.
Further, the excitation coil wire and measuring coil wire are spaced in the insertion flexible insulation base successively.
Further, the excitation coil wire and measuring coil wire are to be produced on the flexible insulation by depositing operation
Conductive material on base.
Further, the excitation coil wire and measuring coil wire are to be partially submerged into leading in the flexible insulation base
The surface of body, i.e. conductor is only partially submerged into flexible insulation base.
Further, the excitation coil wire and measuring coil wire are to be completely embedded into leading in the flexible insulation base
Body.
Further, the magnetic flux transducer also includes protective case, the protective case by two it is block-shaped with tested component outside
The insulation shell that surface is adapted is constituted, and tested external surface of structural member is coated on after two pieces of insulation shell docking.
Further, the magnetic flux transducer also includes turning set, and the internal wiring terminal is fixedly connected on the rotation
The outer surface of set；The turning set is socketed in tested component outside.
Further, the protective case is made up of polytetrafluoroethylene (PTFE).
Further, the turning set is made up of polytetrafluoroethylene (PTFE).
Further, the flexible insulation base is any one of empire cloth, soft PCV or alumina silicate blanket.
The present invention has following Advantageous Effects：
1st, winding principle is simple, process is simple, is suitable to batch micro operations, cost can be greatly lowered.
2nd, compared with traditional single line coiling magnetic flux transducer, the present invention is using multiple conducting wires in parallel within the same layer
Mode, while without coil turn is reduced, considerably reduces circuitous resistance, thus reduces operating voltage, reduces
Power reguirements, increased induced-current, improve signal to noise ratio.
3rd, due to use same layer parallel connection multiple conducting wires mode, and wire be by compacting or depositing operation system
Make on base material, so the situation of broken string is less likely to occur, even if there is broken string, the influence to using also is easy to eliminate.
4th, by general internal wiring terminal or external wiring terminal, it is possible to achieve the modularization of winding, can be according to reality
Need, different demands are met by way of serial or parallel connection, single or multiple lift.
5th, due to using coil type structure, this magnetic flux transducer is limited very little by member section shape, as long as closing
, bus for straight line Free Surface.
6th, after being finished to tested component internal force measurement, winding can be fixed on tested structural member, so as to real-time monitoring
Or monitor next time；Winding can also be disassembled, used elsewhere.
Brief description of the drawings
Fig. 1 is the magnetic flux transducer use state structural representation of the embodiment of the present invention；
Fig. 2 cuts for the structure in excitation coil wire and measuring coil wire the insertion flexible insulation base of the embodiment of the present invention
Face structural representation；
Fig. 3 is the knot in excitation coil wire and measuring coil wire the insertion flexible insulation base of another embodiment of the present invention
Structure cross section structure schematic diagram；
Fig. 4 is the knot in excitation coil wire and measuring coil wire the insertion flexible insulation base of another embodiment of the present invention
Structure cross section structure schematic diagram；
The structural representation that Fig. 5 winds for the magnetic flux transducer rectangle of the embodiment of the present invention.
Specific embodiment
Below, refer to the attached drawing, is more fully illustrated to the present invention, shown in the drawings of exemplary implementation of the invention
Example.However, the present invention can be presented as various multi-forms, the exemplary implementation for being confined to describe here is not construed as
Example.And these embodiments are to provide, so that the present invention is fully and completely, and will fully convey the scope of the invention to this
The those of ordinary skill in field.
As shown in figure 1, invention provides a kind of magnetic flux transducer for the detection of ferrimagnet internal force, the magnetic
Flux sensor includes internal wiring terminal 5, external wiring terminal 8 and flexible winding band 4；Wherein, internal wiring terminal 5 and external terminal
Son 8 is respectively fixedly connected with flexible winding with 4 two ends, and flexible winding band 4 includes flexible insulation base and embedded flexible insulation
Excitation coil wire and measuring coil wire in base；The two ends of excitation coil wire and measuring coil wire respectively with internal wiring
Magnet exciting coil interface 6 and measuring coil interface 7 in terminal 5 and external wiring terminal 8 are connected.Excitation coil wire and measuring coil
Wire is spaced in embedded flexible insulation base successively, and it is as small as possible that the spacing between wire is set.
As shown in Fig. 2 excitation coil wire and measuring coil wire are to be produced on flexible insulation base by depositing operation
Conductive material.
As shown in figure 3, excitation coil wire and measuring coil wire are the conductor being partially submerged into flexible insulation base, that is, lead
The surface of body is only partially submerged into flexible insulation base.
As shown in figure 4, excitation coil wire and measuring coil wire are the conductor being completely embedded into flexible insulation base.
Magnetic flux transducer also includes protective case 2, and protective case 2 block-shaped is adapted with the outer surface of tested component 1 by two
Insulation shell is constituted, and the outer surface of tested component 2 is coated on after two pieces of insulation shell docking.Protective case 2 is made up of polytetrafluoroethylene (PTFE).
Magnetic flux transducer also includes turning set 3, and internal wiring terminal 5 is fixedly connected on the outer surface of turning set 3；Turning set
3 are socketed in the outside of tested component 1.Turning set 3 is made up of polytetrafluoroethylene (PTFE).
Flexible insulation base is any one of empire cloth, soft PCV or alumina silicate blanket, it is also possible to by other flexible insulating material systems
Into.
During practical operation, protective case is fixed on tested component appearance first, the two halves of turning set are closed in protection respectively
Set is outside, then outside it from the coil of band material of certain length, internal wiring terminal is installed in its one end, and by internal wiring end
Son is fixed on turning set.Direction as required rotates turning set, you can winding is wrapped in into member exterior.When being wound up into
After certain number of plies, you can block winding, external wiring terminal in connection, turning set is fixed to be prevented from rotating on the protective sleeve.Use
External connection circuit, including excitation set and signal collecting device, you can constitute a set of magnetic flux measuring structure internal force system.Measurement
Finish, if necessary to dismantle, release the fixation of turning set, winding external wiring terminal is fixed in a circular shaft, make the axle
Rotate, you can winding is wound into the circular shaft, while winding is disassembled from tested circular cross-section component.
If tested component is not circular cross-section, except being inconvenient to use turning set thus winding somewhat multiple with unloading process
Outside miscellaneous, other application methods are similar with the operation of circular cross-section component.
In the present invention, excitatory equipment that magnetic flux transducer is used, signal measurement device can be used and traditional magnetic
Flux sensor identical principle, the demarcation of magnetic flux transducer zero point is identical with traditional magnetic flux transducer.It is of the invention
Magnetic flux transducer has the advantage that so that it is particularly suited for FAST cable net structures, Bird's Nest etc. has built up and required supplementation with
The load-bearing monitor of the steel construction of load-bearing monitor point.
As shown in figure 5, the present invention uses rewinding structure, circular cross-section component is applicable not only to, applies also for not rounded
Tee section component.
It is described above simply to illustrate that of the invention, it is understood that the invention is not limited in above example, meet
The various variants of inventive concept are within protection scope of the present invention.
Claims (10)
1. it is a kind of for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that the magnetic flux transducer bag
Include internal wiring terminal, external wiring terminal and flexible winding band；Wherein, the internal wiring terminal and external wiring terminal are fixed respectively connects
The two ends of the flexible winding band are connected on, the flexible winding band is included in flexible insulation base and the insertion flexible insulation base
Excitation coil wire and measuring coil wire；The two ends of the excitation coil wire and measuring coil wire respectively with internal wiring
Magnet exciting coil interface and measuring coil interface connection in terminal and external wiring terminal.
2. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Excitation coil wire and measuring coil wire are spaced in the insertion flexible insulation base successively.
3. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Excitation coil wire and measuring coil wire are the conductive material being produced on by depositing operation on the flexible insulation base.
4. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Excitation coil wire and measuring coil wire are the conductor being partially submerged into the flexible insulation base, i.e. the surface of conductor only has portion
Divide in embedded flexible insulation base.
5. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Excitation coil wire and measuring coil wire are the conductor being completely embedded into the flexible insulation base.
6. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Magnetic flux transducer also includes protective case, and the protective case is by the two block-shaped insulation shells being adapted with tested external surface of structural member
Constitute, tested external surface of structural member is coated on after two pieces of insulation shell docking.
7. it is according to claim 1 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Magnetic flux transducer also includes turning set, and the internal wiring terminal is fixedly connected on the outer surface of the turning set；The rotation
It is socketed in tested component outside.
8. it is according to claim 6 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Protective case is made up of polytetrafluoroethylene (PTFE).
9. it is according to claim 7 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that it is described
Turning set is made up of polytetrafluoroethylene (PTFE).
10. it is according to claim 7 for ferrimagnet internal force detection magnetic flux transducer, it is characterised in that institute
State any one that flexible insulation base is empire cloth, soft PCV or alumina silicate blanket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070430.4A CN106768506A (en) | 2017-02-09 | 2017-02-09 | A kind of magnetic flux transducer for the detection of ferrimagnet internal force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070430.4A CN106768506A (en) | 2017-02-09 | 2017-02-09 | A kind of magnetic flux transducer for the detection of ferrimagnet internal force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768506A true CN106768506A (en) | 2017-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710070430.4A Pending CN106768506A (en) | 2017-02-09 | 2017-02-09 | A kind of magnetic flux transducer for the detection of ferrimagnet internal force |
Country Status (1)
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| CN (1) | CN106768506A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752672A (en) * | 2019-03-07 | 2019-05-14 | 郑州大学 | A kind of clamp type magnetic flux sensor and its application method |
| CN110581982A (en) * | 2019-10-09 | 2019-12-17 | 四川博文讯通科技有限公司 | Construction monitoring and scheduling system based on virtual reality |
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|---|---|---|---|---|
| JP2005315733A (en) * | 2004-04-28 | 2005-11-10 | Jfe Steel Kk | Method for measuring displacement of ferromagnetic body |
| CN102435357A (en) * | 2011-10-09 | 2012-05-02 | 北京工业大学 | Flexible magnetostriction and magnetoelastic integrated sensor for detecting stress and defect of wire rope |
| CN103674787A (en) * | 2013-11-27 | 2014-03-26 | 上海交通大学 | Miniaturized integration induction type on-line monitoring sensor for slide oil grains |
| CN106092383A (en) * | 2016-06-23 | 2016-11-09 | 南昌航空大学 | Magnetic bullet cable force measurement method and restructural magnetic-elastic stress sensor thereof |
| CN206420593U (en) * | 2017-02-09 | 2017-08-18 | 中国科学院国家天文台 | A kind of magnetic flux transducer detected for ferrimagnet internal force |
-
2017
- 2017-02-09 CN CN201710070430.4A patent/CN106768506A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315733A (en) * | 2004-04-28 | 2005-11-10 | Jfe Steel Kk | Method for measuring displacement of ferromagnetic body |
| CN102435357A (en) * | 2011-10-09 | 2012-05-02 | 北京工业大学 | Flexible magnetostriction and magnetoelastic integrated sensor for detecting stress and defect of wire rope |
| CN103674787A (en) * | 2013-11-27 | 2014-03-26 | 上海交通大学 | Miniaturized integration induction type on-line monitoring sensor for slide oil grains |
| CN106092383A (en) * | 2016-06-23 | 2016-11-09 | 南昌航空大学 | Magnetic bullet cable force measurement method and restructural magnetic-elastic stress sensor thereof |
| CN206420593U (en) * | 2017-02-09 | 2017-08-18 | 中国科学院国家天文台 | A kind of magnetic flux transducer detected for ferrimagnet internal force |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752672A (en) * | 2019-03-07 | 2019-05-14 | 郑州大学 | A kind of clamp type magnetic flux sensor and its application method |
| CN109752672B (en) * | 2019-03-07 | 2024-04-19 | 郑州大学 | Clamping type magnetic flux sensor and application method thereof |
| CN110581982A (en) * | 2019-10-09 | 2019-12-17 | 四川博文讯通科技有限公司 | Construction monitoring and scheduling system based on virtual reality |
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Application publication date: 20170531 |
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