CN103698720A - Magnetic flux detecting method for open-loop magnetic flux sensor - Google Patents
Magnetic flux detecting method for open-loop magnetic flux sensor Download PDFInfo
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- CN103698720A CN103698720A CN201310719551.9A CN201310719551A CN103698720A CN 103698720 A CN103698720 A CN 103698720A CN 201310719551 A CN201310719551 A CN 201310719551A CN 103698720 A CN103698720 A CN 103698720A
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- cable
- magnetic flux
- electromotive force
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- loop coil
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Abstract
The invention relates to a magnetic flux detecting method for an open-loop magnetic flux sensor, belongs to the field of civil engineering, and is applicable to safety and health detection of cable structures. In the method, an open-loop coil is used, and comprises two semicircular open-loop coil units connected in series; a conducting wire on the inner side of each open-loop coil unit is propped against a cable; the magnetic variation of the cable generates induced electromotive force on the conducting wires on the inner side; conducting wires on the outer side of the open-loop coil units are magnetically shielded by 3-layer electrical pure iron with the thickness of 0. 5 mm; the external magnetic field cannot penetrate the relatively thick shielding material, and the reversed induced electromotive force is not generated on the conducting wires on the outer side; a ring is formed between the two semicircular open-loop coil units; the cable is put in the ring; the magnetic variation of the cable generates the induced electromotive force on the circular arc conducting wires on the inner side; the ring is equal to a round coil; the magnetic flux of the cable can be obtained through measuring the induced electromotive force.
Description
Technical field
The present invention relates to a kind of magnetic flux detection method of open loop magnetic flux transducer, belong to civil engineering work neck wood engineering territory, the safety and Health that is applied to rope-like anchoring structure detects.
Background technology
Prior art: current magnetic flux cable tension sensor, measure the method for the magnetic field intensity of cable, be coil method, i.e. a large amount of coil of coiling on cable, obtains the changes of magnetic field of cable by this coil, be closed loop configuration, after installing, cannot take off.Can only use a flux sensing coil by a cables, can not test several cables by an inductive coil, consume a large amount of materials.
Summary of the invention
The present invention is in order to overcome above-mentioned defect, and object is to provide a kind of magnetic flux detection method of open loop magnetic flux transducer, and this inductive coil can take off from cable, test several cables.
To achieve these goals, the present invention adopts following technical scheme:
A kind of magnetic flux detection method of open loop magnetic flux transducer, the method is used a split coil, this coil comprises the split coil unit of the semicircular ring of 2 series connection, and the inboard wire of split coil unit leans against on cable, and the changes of magnetic field of cable produces induced electromotive force in this inboard wire;
The outboard wire of split coil unit adopts 3 layers of thick electrical pure iron of 0.5mm to carry out magnetic shielding, and external magnetic field can not penetrate thicker shielding material, and this part can not produce reverse induction electromotive force;
The split coil unit of 2 semicircular ring forms an annulus in centre, cable is placed in above-mentioned annulus, on cable, changes of magnetic field produces induction electromotive force on inner arc wire, this annulus is equivalent to a circular coil, by measuring the size of this sensitive electromotive force, obtain the magnetic flux size of cable.
Beneficial effect of the present invention:
The present invention can take off from cable very easily, test several cables, and the present invention is simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of split coil of the present invention unit;
Fig. 2 is the structural representation of split coil integral body of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1,2, describe the present invention:
A kind of magnetic flux detection method of open loop magnetic flux transducer, it is characterized in that: the method is used a split coil, this coil comprises the split coil unit of the semicircular ring of 2 series connection, the inboard wire 1 of split coil unit leans against on cable, and the changes of magnetic field of cable produces induced electromotive force in this inboard wire 1;
The outboard wire 2 of split coil unit adopts 3 layers of thick electrical pure iron of 0.5mm to carry out magnetic shielding, and external magnetic field can not penetrate thicker shielding material, and this part can not produce reverse induction electromotive force;
The split coil unit of 2 semicircular ring forms an annulus in centre, cable is placed in above-mentioned annulus, on cable, changes of magnetic field produces induction electromotive force on inner arc wire, this annulus is equivalent to a circular coil, by measuring the size of this sensitive electromotive force, obtain the magnetic flux size of cable.
Claims (1)
1. the magnetic flux detection method of an open loop magnetic flux transducer, it is characterized in that: the method is used a split coil, this coil comprises the split coil unit of the semicircular ring of 2 series connection, the inboard wire of split coil unit (1) leans against on cable, and the changes of magnetic field of cable is at the upper induced electromotive force that produces of this inboard wire (1);
The outboard wire of split coil unit (2) adopts 3 layers of thick electrical pure iron of 0.5mm to carry out magnetic shielding, and external magnetic field can not penetrate thicker shielding material, and this part can not produce reverse induction electromotive force;
The split coil unit of 2 semicircular ring forms an annulus in centre, cable is placed in above-mentioned annulus, on cable, changes of magnetic field produces induction electromotive force on inner arc wire, this annulus is equivalent to a circular coil, by measuring the size of this sensitive electromotive force, obtain the magnetic flux size of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310719551.9A CN103698720B (en) | 2013-12-24 | 2013-12-24 | A kind of magnetic flux detection method of open-loop magnetic flux sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310719551.9A CN103698720B (en) | 2013-12-24 | 2013-12-24 | A kind of magnetic flux detection method of open-loop magnetic flux sensor |
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| Publication Number | Publication Date |
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| CN103698720A true CN103698720A (en) | 2014-04-02 |
| CN103698720B CN103698720B (en) | 2016-12-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006909A (en) * | 2014-05-20 | 2014-08-27 | 宁波大学 | Cable force detecting method and cable force sensor using same |
| CN104698403A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Intelligent wireless open-loop magnetic-flux acquiring method |
| CN104698402A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Ribbon cable detection method for magnetic flux of open loop magnetic flux sensor |
| CN107255484A (en) * | 2017-06-22 | 2017-10-17 | 辽宁工程技术大学 | A kind of novel open-close type magnetic flux transducer and rod member for grid axial force test method |
| CN109813483A (en) * | 2019-03-28 | 2019-05-28 | 交通运输部公路科学研究所 | A kind of adjustable cable force measurement device of open loop and its measurement method |
| US11650269B2 (en) | 2021-08-25 | 2023-05-16 | Analog Devices International Unlimited Company | Split coil arrangement for non-disruptive measurement of axial magnetic flux as part of system to infer machine health |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769843A (en) * | 2004-11-01 | 2006-05-10 | 耐力有限公司 | Non-contact rotation angle detecting sensor |
| KR101192286B1 (en) * | 2011-02-09 | 2012-10-17 | 한국표준과학연구원 | Device for detecting LF and LMA of wire rope |
| CN202757721U (en) * | 2012-04-06 | 2013-02-27 | 江西飞尚科技有限公司 | Magnetic-flux cable force detection device |
-
2013
- 2013-12-24 CN CN201310719551.9A patent/CN103698720B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769843A (en) * | 2004-11-01 | 2006-05-10 | 耐力有限公司 | Non-contact rotation angle detecting sensor |
| KR101192286B1 (en) * | 2011-02-09 | 2012-10-17 | 한국표준과학연구원 | Device for detecting LF and LMA of wire rope |
| CN202757721U (en) * | 2012-04-06 | 2013-02-27 | 江西飞尚科技有限公司 | Magnetic-flux cable force detection device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006909A (en) * | 2014-05-20 | 2014-08-27 | 宁波大学 | Cable force detecting method and cable force sensor using same |
| CN104006909B (en) * | 2014-05-20 | 2016-01-20 | 宁波大学 | The cable tension sensor of a kind of Suo Li detection method and use the method |
| CN104698403A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Intelligent wireless open-loop magnetic-flux acquiring method |
| CN104698402A (en) * | 2015-03-03 | 2015-06-10 | 江西飞尚科技有限公司 | Ribbon cable detection method for magnetic flux of open loop magnetic flux sensor |
| CN107255484A (en) * | 2017-06-22 | 2017-10-17 | 辽宁工程技术大学 | A kind of novel open-close type magnetic flux transducer and rod member for grid axial force test method |
| CN109813483A (en) * | 2019-03-28 | 2019-05-28 | 交通运输部公路科学研究所 | A kind of adjustable cable force measurement device of open loop and its measurement method |
| US11650269B2 (en) | 2021-08-25 | 2023-05-16 | Analog Devices International Unlimited Company | Split coil arrangement for non-disruptive measurement of axial magnetic flux as part of system to infer machine health |
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| Publication number | Publication date |
|---|---|
| CN103698720B (en) | 2016-12-07 |
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