CN103674349B - A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem - Google Patents
A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem Download PDFInfo
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- CN103674349B CN103674349B CN201310718127.2A CN201310718127A CN103674349B CN 103674349 B CN103674349 B CN 103674349B CN 201310718127 A CN201310718127 A CN 201310718127A CN 103674349 B CN103674349 B CN 103674349B
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Abstract
The present invention relates to a kind of open-loop magnetic flux sensor inducing method based on Gauss theorem, belong to civil engineering work neck wood engineering territory, the safety and Health being applied to rope-like anchoring structure detects.First on cable wire around on multi-turn excitation coil, then inductive coil is placed on drive coil, two inductive coils form an annulus inductive coil group, the drive coil be enclosed within cable wire is wrapped up by two inductive coils, after drive coil energising, the magnetic line of force of drive coil outside is collected by two pieces of electrical pure irons, and changes of magnetic field causes, and inductive coil produces induced potential; By obtaining the size of magnetic flux Suo Li to this voltage integrating meter.
Description
Technical field
The present invention relates to a kind of open-loop magnetic flux sensor inducing method based on Gauss theorem, belong to civil engineering work neck wood engineering territory, the safety and Health being applied to rope-like anchoring structure detects.
Background technology
The method of the measurement inductive coil of current magnetic flux cable tension sensor is all the structure of closed loop, needs to wind on model in advance, is inserted in when bridge construction.Can not use the bridge completed.
Summary of the invention
In order to overcome above-mentioned defect, the object of the invention is to provide a kind of open-loop magnetic flux sensor inducing method based on Gauss theorem, can be placed on very easily on cable wire and also disassemble from cable wire very easily.
To achieve these goals, the present invention adopts following technical scheme:
A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem, first on cable wire around on multi-turn excitation coil, then inductive coil is placed on drive coil, two inductive coils form an annulus inductive coil group, are enclosed within cable wire, and the drive coil be enclosed within cable wire is wrapped up by two inductive coils, after drive coil energising, the magnetic line of force of drive coil outside is collected by two pieces of electrical pure irons, and changes of magnetic field causes, and inductive coil produces induced potential;
The induced voltage of above-mentioned inductive coil is:
By obtaining the size of magnetic flux Suo Li to this voltage integrating meter.
The material of described electrical pure iron is high permeability material.
According to Gauss theorem in magnetic field, the magnetic line of force is all closed loop, produces the magnetic line of force around the drive coil on cable wire on cable wire, and these magnetic lines of force are also closed, and they get back to again drive coil from the outside of drive coil.
Collect the magnetic field size that these magnetic lines of force just can be determined to produce on cable wire.
Beneficial effect of the present invention:
The present invention uses high permeability material electrical pure iron, and electrical pure iron magnetic resistance is much smaller than air, and the magnetic line of force mainly passes through from electrical pure iron.By the magnetic flux on Coil Detector electrical pure iron, the magnetic field size in cable wire can be drawn.
Accompanying drawing explanation
Fig. 1 is band electrical pure iron induction coil configuration schematic diagram;
Fig. 2 is the structural representation of annulus inductive coil group.
Embodiment
Describe the present invention below in conjunction with accompanying drawing 1,2:
A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem, first on cable wire around on multi-turn excitation coil, then inductive coil 2 is placed on drive coil, two inductive coils 2 form an annulus inductive coil group 3, are enclosed within cable wire, and the drive coil be enclosed within cable wire is wrapped up by two inductive coils 2, after drive coil energising, the magnetic line of force of drive coil outside is collected by two pieces of electrical pure irons 1, and changes of magnetic field causes, and inductive coil 2 produces induced potential;
The induced voltage of above-mentioned inductive coil (2) is:
By obtaining the size of magnetic flux Suo Li to this voltage integrating meter.
The material of described electrical pure iron 1 is high permeability material.
Claims (2)
1., based on an open-loop magnetic flux sensor inducing method for Gauss theorem, it is characterized in that:
First on cable wire around on multi-turn excitation coil, then inductive coil (2) is placed on drive coil, two inductive coil (2) compositions annulus inductive coil group (3), be enclosed within cable wire, the drive coil be enclosed within cable wire is wrapped up by two inductive coils (2), and after drive coil energising, the magnetic line of force of drive coil outside is collected by two pieces of electrical pure irons (1), changes of magnetic field causes, and inductive coil (2) produces induced potential;
The induced voltage of above-mentioned inductive coil (2) is:
By obtaining the size of magnetic flux Suo Li to this voltage integrating meter.
2. the open-loop magnetic flux sensor inducing method based on Gauss theorem according to claim 1, is characterized in that: the material of described electrical pure iron (1) is high permeability material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718127.2A CN103674349B (en) | 2013-12-24 | 2013-12-24 | A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem |
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| CN201310718127.2A CN103674349B (en) | 2013-12-24 | 2013-12-24 | A kind of open-loop magnetic flux sensor inducing method based on Gauss theorem |
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| CN103674349A CN103674349A (en) | 2014-03-26 |
| CN103674349B true CN103674349B (en) | 2015-10-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467336A (en) * | 2015-12-30 | 2016-04-06 | 中交路桥技术有限公司 | Differential temperature compensation type bridge cable magnetic flux acquisition device |
| CN105527041A (en) * | 2016-01-31 | 2016-04-27 | 上海强劲地基工程股份有限公司 | Internal force monitoring and automatic measurement system of pre-stress anchor cable |
| CN106768503B (en) * | 2016-11-14 | 2019-06-25 | 南昌航空大学 | A kind of magnetic-elastic stress sensor and cable cable force measurement system |
Citations (8)
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| WO1999024803A1 (en) * | 1997-11-11 | 1999-05-20 | Suspa Spannbeton Gmbh | Method and device for determining the tensile or compressive stress in a ferro-magnetic member such as a prestressing, tension or compression organ used in civil engineering |
| CN1952635A (en) * | 2006-11-14 | 2007-04-25 | 重庆大学 | Differential and temperature compensating type on-line testing method and system for bridge cable force |
| EP1783487A1 (en) * | 2005-11-07 | 2007-05-09 | Kaisei Engineer Co., Ltd. | Electromagnetic induction type inspection device and method |
| CN101091120A (en) * | 2004-11-09 | 2007-12-19 | 麦提斯仪器及设备股份有限公司 | Sensor for measuring magnetic flux |
| CN102175359A (en) * | 2011-02-11 | 2011-09-07 | 重庆大学 | Passive magnetism monitoring method and device for wire rope/rod component stress |
| CN202126492U (en) * | 2011-05-24 | 2012-01-25 | 长沙中大精密仪器有限公司 | Digital fluxgraph |
| CN202757721U (en) * | 2012-04-06 | 2013-02-27 | 江西飞尚科技有限公司 | Magnetic-flux cable force detection device |
| CN103278558A (en) * | 2012-12-10 | 2013-09-04 | 重庆交通大学 | Anchoring system nondestructive test apparatus and method based on magnetic induced shrinkage or elongation |
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2013
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Patent Citations (8)
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|---|---|---|---|---|
| WO1999024803A1 (en) * | 1997-11-11 | 1999-05-20 | Suspa Spannbeton Gmbh | Method and device for determining the tensile or compressive stress in a ferro-magnetic member such as a prestressing, tension or compression organ used in civil engineering |
| CN101091120A (en) * | 2004-11-09 | 2007-12-19 | 麦提斯仪器及设备股份有限公司 | Sensor for measuring magnetic flux |
| EP1783487A1 (en) * | 2005-11-07 | 2007-05-09 | Kaisei Engineer Co., Ltd. | Electromagnetic induction type inspection device and method |
| CN1952635A (en) * | 2006-11-14 | 2007-04-25 | 重庆大学 | Differential and temperature compensating type on-line testing method and system for bridge cable force |
| CN102175359A (en) * | 2011-02-11 | 2011-09-07 | 重庆大学 | Passive magnetism monitoring method and device for wire rope/rod component stress |
| CN202126492U (en) * | 2011-05-24 | 2012-01-25 | 长沙中大精密仪器有限公司 | Digital fluxgraph |
| CN202757721U (en) * | 2012-04-06 | 2013-02-27 | 江西飞尚科技有限公司 | Magnetic-flux cable force detection device |
| CN103278558A (en) * | 2012-12-10 | 2013-09-04 | 重庆交通大学 | Anchoring system nondestructive test apparatus and method based on magnetic induced shrinkage or elongation |
Non-Patent Citations (2)
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| 基于磁通量法的钢索拉力测量实验研究;余道华等;《电子质量》;20081231(第11期);第25-27页 * |
| 斜拉桥斜拉索索力测试方法综述;刘志勇;《铁道建筑》;20070430;第18-20页 * |
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| CN103674349A (en) | 2014-03-26 |
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