CN103674349A - Gauss theorem based open-loop magnetic flux sensor sensing method - Google Patents
Gauss theorem based open-loop magnetic flux sensor sensing method Download PDFInfo
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- CN103674349A CN103674349A CN201310718127.2A CN201310718127A CN103674349A CN 103674349 A CN103674349 A CN 103674349A CN 201310718127 A CN201310718127 A CN 201310718127A CN 103674349 A CN103674349 A CN 103674349A
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Abstract
The invention relates to a Gauss theorem based open-loop magnetic flux sensor sensing method, belongs to the field of civil engineering and is applied to safety and health inspection of cable type structures. The Gauss theorem based open-loop magnetic flux sensor sensing method comprises the steps of: firstly, winding multiple turns of an exciting coil on a steel cable; then placing sensing coils on the exciting coil; enabling a round-ring sensing coil group which is composed of two sensing coils to be sleeved on the steel cable; wrapping the exciting coil sleeved on the steel cable by two sensing coils; after the exciting coil is put through electricity, collecting magnetic lines of force at the outer part of the exciting coil by two pieces of electrical pure iron; inducing change of a magnetic field to enable the sensing coils to generate induced voltage; integrating the voltage to obtain a size of a magnetic flux cable force.
Description
Technical field
The present invention relates to a kind of open loop magnetic flux transducer inducing method based on Gauss theorem, belong to civil engineering work neck wood engineering territory, the safety and Health that is applied to rope-like anchoring structure detects.
Background technology
The method of the measurement inductive coil of magnetic flux cable tension sensor is all the structure of closed loop at present, needs on model, to wind in advance, in the time of bridge construction, is inserted in.To the bridge having completed, can not use.
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 transducer inducing method based on Gauss theorem, can be placed on very easily on cable wire and from cable wire, disassemble very easily.
To achieve these goals, the present invention adopts following technical scheme:
A kind of open loop magnetic flux transducer inducing method based on Gauss theorem, first on cable wire around on multi-turn drive coil, then inductive coil is placed on drive coil, two inductive coils form an annulus inductive coil group, are enclosed within on cable wire, and the drive coil being enclosed within on 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 electrical pure irons, and changes of magnetic field causes, inductive coil generation induced potential;
The induced voltage of above-mentioned inductive coil is:
By this voltage integrating meter being obtained to the size of magnetic flux Suo Li.
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, and the drive coil on cable wire produces the magnetic line of force on cable wire, and these magnetic lines of force are also closed, and they get back to drive coil again from the outside of drive coil.
Collect these magnetic lines of force and just can determine the magnetic field size producing 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 coil, detect the magnetic flux on electrical pure iron, can draw the magnetic field size in cable wire.
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
Below in conjunction with accompanying drawing 1,2, describe the present invention:
A kind of open loop magnetic flux transducer inducing method based on Gauss theorem, first on cable wire around on multi-turn drive coil, then inductive coil 2 is placed on drive coil, two inductive coils 2 form an annulus inductive coil group 3, are enclosed within on cable wire, and the drive coil being enclosed within on 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 electrical pure irons 1, and changes of magnetic field causes, inductive coil 2 generation induced potentials;
The induced voltage of above-mentioned inductive coil (2) is:
By this voltage integrating meter being obtained to the size of magnetic flux Suo Li.
The material of described electrical pure iron 1 is high permeability material.
Claims (2)
1. the open loop magnetic flux transducer inducing method based on Gauss theorem, is characterized in that:
First on cable wire around on multi-turn drive coil, then inductive coil (2) is placed on drive coil, two inductive coils (2) form an annulus inductive coil group (3), be enclosed within on cable wire, the drive coil being enclosed within on 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 electrical pure irons (1), changes of magnetic field causes, inductive coil (2) generation induced potential;
The induced voltage of above-mentioned inductive coil (2) is:
By this voltage integrating meter being obtained to the size of magnetic flux Suo Li.
2. the open loop magnetic flux transducer 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 true CN103674349A (en) | 2014-03-26 |
| CN103674349B CN103674349B (en) | 2015-10-28 |
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Cited By (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 |
| CN106768503A (en) * | 2016-11-14 | 2017-05-31 | 南昌航空大学 | A kind of magnetic-elastic stress sensor and cable cable force measurement system |
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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 |
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| 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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| 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 |
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Non-Patent Citations (2)
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| 余道华等: "基于磁通量法的钢索拉力测量实验研究", 《电子质量》, no. 11, 31 December 2008 (2008-12-31), pages 25 - 27 * |
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Cited By (4)
| 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 |
| CN106768503A (en) * | 2016-11-14 | 2017-05-31 | 南昌航空大学 | A kind of magnetic-elastic stress sensor and cable cable force measurement system |
| 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 |
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| Publication number | Publication date |
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| CN103674349B (en) | 2015-10-28 |
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