CN101995559B - Triaxial fluxgate probe - Google Patents
Triaxial fluxgate probe Download PDFInfo
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- CN101995559B CN101995559B CN200910169234A CN200910169234A CN101995559B CN 101995559 B CN101995559 B CN 101995559B CN 200910169234 A CN200910169234 A CN 200910169234A CN 200910169234 A CN200910169234 A CN 200910169234A CN 101995559 B CN101995559 B CN 101995559B
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Abstract
The invention discloses a triaxial fluxgate probe which comprises measuring coils (6), a magnetic core (3) and a measuring skeleton (5), wherein the measuring skeleton (5) is in a dihexahedron structure, an X-axis, a Y-axis and a Z-axis are formed, and the measuring coils (6) are respectively wound around the measuring skeleton (5); the center of the measuring skeleton (5) is provided with a cross inner cavity for installing the magnetic core (3); and the magnetic core (3) is in a cross skeleton structure and is symmetrical and coaxial to the X-axis, Y-axis and Z-axis triaxial structure space formed by the measuring skeleton (5). Three axes are integrated in one body, and share one magnetic core, therefore, the triaxial fluxgate probe occupies a small space of an instrument capsule and has the advantages of high sensitivity, good accuracy and triaxial symmetry. Three components of the earth magnetic field are accurately measured, and the triaxial fluxgate probe can be used for conveniently and accurately measuring the data of magnetic field distribution under the condition of great magnetic field gradient.
Description
Technical field
The present invention relates to a kind of fluxgate magnetic core, particularly a kind of three axis fluxgates probe.
Background technology
Present a kind of three axis fluxgates probe is like US3800213A; Form by magnetic core, skeleton and measurement coil; What its magnetic core adopted is cylindrical structure; Skeleton adopts is that two U types intersect cylindrical structures that interlock and form, and magnetic core is packed in this right cylinder skeleton, last at the outside of cylindrical structure skeleton coiling X, Y, Z three-axis measurement coil; Also have a kind of three axis fluxgates probe like US005672967A, also be made up of magnetic core, skeleton and measurement coil, it includes three independently magnetic cores, and skeleton adopts hexahedron structure, at the outside of hexahedron structure skeleton coiling X, Y, Z three-axis measurement coil.
What the magnetic core of patent US3800213A invention adopted is cylindrical structure, causes magnetic core asymmetric at X, Y, three shaft spaces of Z; What skeleton adopted is two cylindrical structures that U types intersection interlocks and forms, and magnetic core can better not fixed in skeleton.
What the magnetic core that patent US005672967A invents adopted is three independently magnetic cores, and magnetic core is asymmetric along three locus of measuring coils, so measure the indifferent of gradient, phase mutual interference when the X in measurement magnetic field, Y, Z component; What skeleton adopted is hexahedron structure, and the volume that takies instrument room is big.
Summary of the invention
The object of the invention is to provide a kind of three axis fluxgates probe, and three axle sensitivity that solve three axis fluxgates probe are inconsistent, measure that gradient is indifferent, the problem of phase mutual interference when the X that measures magnetic field, Y, Z component.
A kind of three axis fluxgates probe comprises magnetic core, measures coil, also comprises the measurement skeleton; Wherein measuring skeleton is the dihexahedron structure, forms X axle, Y axle and Z axle, and coil is measured in coiling on X axle, Y axle and Z axle respectively; Measuring frame center has a cross inner chamber, is used for the device magnetic core; Magnetic core is cross skeleton structure, is made up of two ring quadratures, and two annular shapes are identical, encircle to be annulus or regular polygon ring; Magnetic core and the X axle of measuring skeleton formation, Y axle, Z axle three-axis structure space symmetry and coaxial; The magnetic core skeleton is made by no magnetic material, and the permeability alloys band is wound on magnetic core skeleton skin or permeability magnetic material and covers that to be coated in the magnetic core skeleton outer, and drive coil is wound on permeability alloys band skin or permeability magnetic material covers outside the coating; The magnetic core skeleton can also be made by permeability magnetic material, and drive coil is wound on the magnetic core skeleton.Drive coil, the lead-in wire of measuring coil all are welded on the pad of P.e.c. terminal block of three axis fluxgates probe end face.
A kind of three axis fluxgates probe, drive coil will make the magnetoconductivity of magnetic core produce two kinds of variable condition, high magnetic conduction state and state of saturation under the effect of driving voltage.In the magnetic field of the earth, the magnetoconductivity of magnetic core improves thousands of times under the high magnetic conduction state, and the magnetic flux density of measuring in the coil is big, and it is little to measure the outer magnetic flux density of coil; The magnetoconductivity of magnetic core is measured the inside and outside magnetic flux density of coil and is equated near the magnetoconductivity of air under the state of saturation.The variation of measuring the inside and outside magnetic flux density of coil can produce measures the inside and outside magnetic flux change of coil, and the variation meeting of measuring the inside and outside magnetic flux of coil produces induced voltage at the two ends of measuring coil.In the one-period of driving voltage, to measure the coil common property and give birth to four induced voltages, the amplitude of this voltage depends on magnetic field intensity.Through becoming a DC voltage after the phase-sensitive rectifier circuit processing, feedback circuit adds a feedback current for the measurement coil again.This feedback current makes measures magnetic field of coil generation, offsets the magnetic field of the earth.After offset in the magnetic field of the earth, this DC voltage became zero volt, measures the magnetic field of the earth component through the size of measuring feedback current.
Three axis fluxgates probe of the present invention, a three-axis integrative and a shared magnetic core, the size that takies instrument room is little, and is highly sensitive, and precision is good, and has three axial symmetries.Accurately measure three components in magnetic field of the earth, under the bigger situation of magnetic field gradient, the data of measuring Distribution of Magnetic Field with it are accurately convenient.Measure the cylindrical structure of skeleton, both be applicable to the installation and the location on plane, be adapted to installation and location in the cylindrical hole again, guaranteed the precision of installing, fluxgate is demarcated easily.
Description of drawings
Fig. 1 is a kind of three axis fluxgate sonde configuration synoptic diagram;
Fig. 2 is a kind of magnetic core of three axis fluxgates probe band drive coil;
Fig. 3 is that the magnetic core of a kind of three axis fluxgates probe band drive coil is packed into and measured in the skeleton.
1. magnetic core skeleton 2. permeability alloys bands 3. magnetic cores 4. drive coils 5. are measured skeleton 6. and are measured coil
Embodiment
A kind of three axis fluxgates probe comprises magnetic core 3, measures coil 6, also comprises and measures skeleton 5.Wherein measure skeleton 5 and be the dihexahedron structure, form X axle, Y axle and Z axle, measuring skeleton 5 centers has a cross inner chamber, is used for device magnetic core 3.Magnetic core 3 is cross skeleton structure, is made up of two annulus quadratures, and magnetic core skeleton 1 is made by no magnetic material, and permeability alloys band 2 is wound on magnetic core skeleton 1 skin, and drive coil 4 is wound on permeability alloys band 2 skins.Measuring skeleton 5 coilings measurement coil 6; Magnetic core 3 and the X axle of measuring skeleton 5 formation, Y axle, Z axle three-axis structure space symmetry and coaxial; Drive coil 4, the lead-in wire of measuring coil 6 all are welded on the pad of P.e.c. terminal block of three axis fluxgates probe end face.
Drive coil 4 will make the magnetoconductivity of magnetic core 3 produce two kinds of variable condition, high magnetic conduction state and state of saturation under the effect of driving voltage.In the magnetic field of the earth, the magnetoconductivity of magnetic core 3 improves thousands of times under the high magnetic conduction state, and the magnetic flux density of measuring in the coil 6 is big, and the magnetic flux density of measuring outside the coil 6 is little; The magnetoconductivity of magnetic core 3 is measured coil 6 inside and outside magnetic flux densities and is equated near the magnetoconductivity of air under the state of saturation.The variation of measurement coil 6 inside and outside magnetic flux densities can produce the magnetic flux change inside and outside the measurement coil 6, measures the variation meeting of coil 6 interior external magnetic fluxs and is measuring the two ends generation induced voltage of coil 6.In the one-period of driving voltage, to measure coil 6 common properties and give birth to four induced voltages, the amplitude of this voltage depends on magnetic field intensity.Through becoming a DC voltage after the phase-sensitive rectifier circuit processing, feedback circuit adds a feedback current for measurement coil 6 again.This feedback current makes measures magnetic field of coil 6 generations, offsets the magnetic field of the earth.After offset in the magnetic field of the earth, this DC voltage became zero volt, measures the magnetic field of the earth component through the size of measuring feedback current.
Claims (2)
1. an axis fluxgate probe comprises magnetic core (3), measures coil (6), it is characterized in that also comprising measurement skeleton (5); Wherein measure skeleton (5) and be the dihexahedron structure, form X axle, Y axle and Z axle, measuring skeleton (5) center has a cross inner chamber, is used for device magnetic core (3); Magnetic core (3) is cross skeleton structure, is made up of two ring quadratures, and two annular shapes are identical, encircle to be annulus or regular polygon ring; Magnetic core skeleton (1) is made by no magnetic material, and permeability alloys band (2) is wound on magnetic core skeleton (1) skin or permeability magnetic material and covers and be coated in magnetic core skeleton (1) skin, and drive coil (4) is wound on permeability alloys band (2) skin or permeability magnetic material covers outside the coating; Coil (6) is measured in coiling on X axle, Y axle and the Z axle of measuring skeleton (5) formation respectively; Magnetic core (3) and the X axle of measuring skeleton (5) formation, Y axle, Z axle three-axis structure space symmetry and coaxial; Drive coil (4), the lead-in wire of measuring coil (6) all are welded on the pad of P.e.c. terminal block of three axis fluxgates probe end face, drive coil (4), measure the lead-in wire and circuit formation loop of coil (6); Drive coil (4) will make the magnetoconductivity of magnetic core (3) produce two kinds of variable condition, high magnetic conduction state and state of saturation under the effect of driving voltage; In the magnetic field of the earth, the magnetoconductivity of magnetic core (3) improves thousands of times under the high magnetic conduction state, and the magnetic flux density of measuring in the coil (6) is big, and it is little to measure the outer magnetic flux density of coil (6); The magnetoconductivity of magnetic core under the state of saturation (3) is measured the inside and outside magnetic flux density of coil (6) and is equated near the magnetoconductivity of air; The variation of measuring the inside and outside magnetic flux density of coil (6) can produce measures the inside and outside magnetic flux change of coil (6), and the variation meeting of measuring the interior external magnetic flux of coil (6) produces induced voltage at the two ends of measuring coil (6); In the one-period of driving voltage, to measure coil (6) common property and give birth to four induced voltages, the amplitude of this voltage depends on magnetic field intensity; Through becoming a DC voltage after the phase-sensitive rectifier circuit processing, feedback circuit adds a feedback current for measurement coil (6) again; This feedback current makes measures magnetic field of coil (6) generation, offsets the magnetic field of the earth; After offset in the magnetic field of the earth, this DC voltage became zero volt, measures the magnetic field of the earth component through the size of measuring feedback current.
2. a kind of three axis fluxgates probe according to claim 1; It is characterized in that " magnetic core skeleton (1) is made by no magnetic material; permeability alloys band (2) is wound on magnetic core skeleton (1) skin or permeability magnetic material and covers and be coated in magnetic core skeleton (1) skin; drive coil (4) is wound on permeability alloys band (2) skin or permeability magnetic material, and to cover coating outer " in the claim 1 replaced with " magnetic core skeleton (1) is made by permeability magnetic material, and drive coil (4) is wound on the magnetic core skeleton (1) ".
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| CN200910169234A CN101995559B (en) | 2009-08-24 | 2009-08-24 | Triaxial fluxgate probe |
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| CN200910169234A CN101995559B (en) | 2009-08-24 | 2009-08-24 | Triaxial fluxgate probe |
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| CN101995559A CN101995559A (en) | 2011-03-30 |
| CN101995559B true CN101995559B (en) | 2012-09-05 |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089242A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Active magnetic field calibration method for measurement while drilling (MWD) directional probe |
| CN102645641A (en) * | 2012-04-05 | 2012-08-22 | 上海海碧电子科技有限公司 | Fluxgate sensor with three components on same point |
| JP5364816B1 (en) | 2012-06-08 | 2013-12-11 | 株式会社フジクラ | Magnetic element control device, magnetic element control method, and magnetic detection device |
| JP5393844B2 (en) * | 2012-06-08 | 2014-01-22 | 株式会社フジクラ | Magnetic element control device, magnetic element control method, and magnetic detection device |
| CN103499795A (en) * | 2013-09-29 | 2014-01-08 | 北京纳特斯拉科技有限公司 | Multifunctional magnetometer with combination of searching coil type and flux-gate type and application thereof |
| CN103487771B (en) * | 2013-09-29 | 2016-08-31 | 北京纳特斯拉科技有限公司 | Non-magnetic fully-sealed triaxial fluxgate magnetometer |
| CN106405452A (en) * | 2015-11-20 | 2017-02-15 | 北京纳特斯拉科技有限公司 | Chip-level packaging micro-triaxial fluxgate magnetometer |
| CN106324533A (en) * | 2016-09-27 | 2017-01-11 | 中国科学院电子学研究所 | Rectangular structure designed tri-axial induction type magnetic field sensor |
| CN107271933B (en) * | 2017-06-15 | 2019-11-01 | 成都理工大学 | A kind of three axis fluxgate sensor of spherical |
| CN107356887B (en) * | 2017-06-15 | 2020-07-28 | 北京纳特斯拉科技有限公司 | Spherical triaxial fluxgate probe |
| CN108761358B (en) * | 2018-04-22 | 2021-07-23 | 成都理工大学 | Method for manufacturing magnetic probe of fluxgate sensor |
| CN108732517B (en) * | 2018-04-22 | 2020-07-14 | 成都理工大学 | Flux gate gradient measuring probe |
| CN108872888B (en) * | 2018-09-14 | 2020-07-24 | 中国科学院地质与地球物理研究所 | A fluxgate magnetic sensor with a magnetic core skeleton structure |
| CN110160513A (en) * | 2019-05-09 | 2019-08-23 | 杭州瑞利科技有限公司 | A kind of anti-inclination fluxgate aspect sensor probe of floatation type |
| CN113341201B (en) * | 2021-06-08 | 2022-08-09 | 合肥博微田村电气有限公司 | Fluxgate current sensor and current measuring method |
| CN113484807B (en) * | 2021-06-30 | 2023-09-22 | 杭州电子科技大学 | A nested annular three-axis fluxgate sensor detection probe |
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| US5672967A (en) * | 1995-09-19 | 1997-09-30 | Southwest Research Institute | Compact tri-axial fluxgate magnetometer and housing with unitary orthogonal sensor substrate |
| CN200941115Y (en) * | 2006-05-25 | 2007-08-29 | 刘芭 | Flux gate sensor and magnetic azimutch sensor |
| CN101308197A (en) * | 2008-04-02 | 2008-11-19 | 武汉大学 | Magnetic flux door sensor probe |
| CN101427394A (en) * | 2006-04-28 | 2009-05-06 | 微门有限公司 | Thin film 3 axis fluxgate and the implementation method thereof |
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2009
- 2009-08-24 CN CN200910169234A patent/CN101995559B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672967A (en) * | 1995-09-19 | 1997-09-30 | Southwest Research Institute | Compact tri-axial fluxgate magnetometer and housing with unitary orthogonal sensor substrate |
| CN101427394A (en) * | 2006-04-28 | 2009-05-06 | 微门有限公司 | Thin film 3 axis fluxgate and the implementation method thereof |
| CN200941115Y (en) * | 2006-05-25 | 2007-08-29 | 刘芭 | Flux gate sensor and magnetic azimutch sensor |
| CN101308197A (en) * | 2008-04-02 | 2008-11-19 | 武汉大学 | Magnetic flux door sensor probe |
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| Title |
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| JP特开2007-279029A 2007.10.25 |
| JP特开2007-3288A 2007.01.11 |
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