CN103675721B - Open-loop magnetic flux sensor - Google Patents
Open-loop magnetic flux sensor Download PDFInfo
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- CN103675721B CN103675721B CN201310719552.3A CN201310719552A CN103675721B CN 103675721 B CN103675721 B CN 103675721B CN 201310719552 A CN201310719552 A CN 201310719552A CN 103675721 B CN103675721 B CN 103675721B
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- flux sensor
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Abstract
The invention discloses an open-loop magnetic flux sensor and belongs to the technical field of magnetic flux detecting sensors. The open-loop magnetic flux sensor comprises two structurally symmetrical sensor structural units, wherein the centers of the two sensor structural units form a section in a hollow circular structure; a steel cable is placed on the hollow circular structure; multiple fixed holes are formed in the sensor structural units; a temperature sensor is arranged inside each sensor structural unit; each sensor structural unit comprises an open-loop exciting coil and an open-loop sensing coil. The open-loop magnetic flux sensor is of an open loop structure which is composed of two symmetrical parts, can be combined on the steel cable, and also can be taken down from the steel cable simply. A magnetic flux cable force test can be carried out for the steel cable without sleeving the open-loop magnetic flux sensor in the steel cable. The open-loop magnetic flux sensor can reduce the cost of the magnetic flux sensor, can increase popularizing rate of the magnetic flux sensor and has great significance for hidden danger inspection of bridges.
Description
Technical field
The present invention relates to a kind of open-loop magnetic flux sensor, belong to magnetic flux quantity detection sensor technical field.
Background technology
British scientist joule in 1842, finds magnetoelasticity. when the external mechanical load that ferrimagnet bears occurs
During change, its internal intensity of magnetization (pcrmeability) changes, by measuring the pcrmeability of the component that ferrimagnet is made
Change, to measure the internal force of component.
Known magnetic flux quantity detection sensor, is closed-loop structure, and producing needs to be inserted in cable wire in advance. but to having built up
Cable, then can not test.
Known magnetic flux quantity detection sensor, the disadvantage is that, be closed-loop structure, need build when, need to be inserted in advance
It is impossible to detect to built cable in cable. known magnetic flux quantity sensor, test can not be dismantled after installing, a steel
Rope is accomplished by a magnetic flux transducer, and material cost is high.
Content of the invention
In order to overcome drawbacks described above, it is an object of the invention to provide a kind of open-loop magnetic flux sensor, this sensor pair
The cable wire built up is detected, many cable wires can be using a magnetic flux transducer test.
In order to achieve the above object, the present invention adopts the following technical scheme that
A kind of open-loop magnetic flux sensor, it includes the sensor construction unit of two symmetrical structures, two sensors
The section that is centrally formed of construction unit is open circles structure, and open circles structural formula places cable wire;In described sensor knot
Multiple fixing holes are provided with structure unit, are internally provided with temperature sensor in sensor construction unit;
Each sensor construction unit described includes open-loop excitation coil and open loop induction coil.
The wire of described open-loop excitation coil and open loop induction coil is drawn from the end face of sensor construction unit.
Beneficial effects of the present invention:
The present invention is a kind of open loop structure, is made up of symmetrical two parts, can be combined on cable wire, also can be simply from steel
Take off on rope. do not need to be inserted in cable wire and just can carry out magnetic flux cable tension test to cable wire.
The present invention can reduce the cost of magnetic flux transducer. improve the popularity rate of magnetic flux transducer. the hidden danger to bridge
Investigation is significant.
Brief description
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of sensor construction unit (1) in the present invention.
Specific embodiment
Describe the present invention below in conjunction with the accompanying drawings:
A kind of open-loop magnetic flux sensor, it includes the sensor construction unit 1 of two symmetrical structures, two sensors
The section that is centrally formed of construction unit 1 is open circles structure 2;Described sensor construction unit 1 is provided with multiple fixations
Hole 3, is internally provided with temperature sensor 4 in sensor construction unit 1;
Each sensor construction unit 1 described includes open-loop excitation coil 6 and open loop induction coil 7.
The wire 5 of described open-loop excitation coil 6 and open loop induction coil 7 is drawn from the end face of sensor construction unit 1.
After cable wire is energized coil magnetizing, produce induced voltage in his surrounding, the induced voltage that half coil obtains
For the half of complete circle, using electromangnetic spectrum, the induced voltage that each section lead is produced is together in series, and obtains stronger
Induced voltage.For calculating the size of Suo Li.
Claims (2)
1. a kind of open-loop magnetic flux sensor it is characterised in that: it includes the sensor construction unit of two symmetrical structures
(1), the section that is centrally formed of two sensor construction units (1) is open circles structure (2);In described sensor construction unit
(1) it is provided with multiple fixing holes (3) on, be internally provided with temperature sensor (4) in sensor construction unit (1);
Each described sensor construction unit (1) includes open-loop excitation coil (6) and open loop induction coil (7);Cable wire is by open loop
After excitation coil magnetization, produce induced voltage in its surrounding, the induced voltage that the open loop induction coil of semicircle obtains has been
The half of whole circle, using electromangnetic spectrum, the induced voltage that each section lead of open loop induction coil is produced is connected
Come, obtain stronger induced voltage, for calculating the size of Suo Li.
2. open-loop magnetic flux sensor according to claim 1 it is characterised in that: described open-loop excitation coil (6) and opening
The wire (5) of ring induction coil (7) is drawn from the end face of sensor construction unit (1).
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CN201310719552.3A CN103675721B (en) | 2013-12-24 | 2013-12-24 | Open-loop magnetic flux sensor |
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CN201310719552.3A CN103675721B (en) | 2013-12-24 | 2013-12-24 | Open-loop magnetic flux sensor |
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CN103675721B true CN103675721B (en) | 2017-01-18 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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 |
CN109683114A (en) * | 2019-01-31 | 2019-04-26 | 广西大学 | A kind of assembling electromagnetic sensor measuring system |
CN114544044A (en) * | 2022-02-23 | 2022-05-27 | 北京奇力建通工程技术有限公司 | Magnetic flux sensor detection member and open type magnetic flux sensor |
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KR101192286B1 (en) * | 2011-02-09 | 2012-10-17 | 한국표준과학연구원 | Device for detecting LF and LMA of wire rope |
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CN203100943U (en) * | 2012-12-26 | 2013-07-31 | 北京科技大学 | Telescopic type magnetic flux sensing and acquiring device |
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