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Triaxial fluxgate probe

A three-axis magnetic and magnetic flux density technology, applied in the field of fluxgate probes, can solve the problems of inconsistent sensitivity, mutual interference, and weak measurement gradient ability of the three axes, and achieve the effects of easy calibration, high sensitivity, and small size

Active Publication Date: 2011-03-30
BEIJING NATESILA SCI & TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a three-axis fluxgate probe to solve the problems of inconsistent three-axis sensitivity of the three-axis fluxgate probe, poor ability to measure gradients, and mutual interference when measuring X, Y, and Z components of the magnetic field.

Method used

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Embodiment Construction

[0013] A three-axis fluxgate probe includes a magnetic core 3, a measuring coil 6, and a measuring skeleton 5. The measuring skeleton 5 is a double hexahedron structure, forming an X axis, a Y axis and a Z axis. There is a cross-shaped cavity in the center of the measuring skeleton 5 for installing the magnetic core 3 . The magnetic core 3 is a cross-shaped skeleton structure, which is composed of two orthogonal rings. The magnetic core skeleton 1 is made of non-magnetic material, the magnetic permeable alloy strip 2 is wound on the outer layer of the magnetic core skeleton 1, and the excitation coil 4 is wound on the Permeable alloy with 2 outer layers. The measurement coil 6 is wound on the measurement skeleton 5; the X-axis, Y-axis, and Z-axis three-axis structure formed by the magnetic core 3 and the measurement skeleton 5 are space-symmetrical and coaxial; the leads of the excitation coil 4 and the measurement coil 6 are all welded on the three-axis Fluxgate probe end fa...

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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 [0001] The invention relates to a fluxgate probe, in particular to a three-axis fluxgate probe. Background technique [0002] A current three-axis fluxgate probe such as US3800213A is composed of a magnetic core, a skeleton and a measuring coil. The magnetic core adopts a cylindrical structure, and the skeleton adopts a cylindrical structure composed of two U-shaped interlocking interlocks. , put the magnetic core into the cylindrical skeleton, and finally wind the X, Y, Z three-axis measuring coils outside the cylindrical structural skeleton; there is also a three-axis fluxgate probe such as US005672967A, which is also composed of a magnetic core, a skeleton It consists of three independent magnetic cores, the frame adopts a regular hexahedral structure, and the X, Y, Z three-axis measuring coils are wound outside the regular hexahedral frame. [0003] The magnetic core invented by the patent US3800213A adopts a cylindrical structure, which causes the magne...

Claims

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Application Information

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IPC IPC(8): G01R33/04G01V3/40
Inventor 张跃曹晨啸胡刚
Owner BEIJING NATESILA SCI & TECH CORP
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