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Hybrid magnetic shielding device based on high temperature superconducting coil

A high-temperature superconducting and magnetic shielding technology, applied in the direction of magnetic/electric field shielding, active shielding, electrical components, etc., can solve the problem of affecting measurement, three-axis Hertz coils cannot shield alternating magnetic fields, and alternating magnetic fields cannot be shielded And other issues

Inactive Publication Date: 2017-01-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is worth noting that the three-axis Hertz coil cannot shield some alternating magnetic fields, so there will be some alternating magnetic fields that cannot be shielded, which will affect the measurement

Method used

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  • Hybrid magnetic shielding device based on high temperature superconducting coil
  • Hybrid magnetic shielding device based on high temperature superconducting coil
  • Hybrid magnetic shielding device based on high temperature superconducting coil

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Embodiment Construction

[0019] Below at first the applicable superconductor of the present invention is introduced:

[0020] The most important feature of a superconductor is complete diamagnetism, also known as the Meissner effect. Since the superconductor "does not allow" any magnetic field inside it, if an external magnetic field passes through the superconductor, the superconductor will inevitably generate an opposite magnetic field to ensure that the internal magnetic field strength is zero, which will generate an induced current.

[0021] Such as figure 1 As shown, the structure diagram of the hybrid magnetic shielding device based on high-temperature superconducting coils of the present invention includes a host computer 1, a fluxgate meter 2, an x-axis high-precision current source 3, a y-axis high-precision current source 4, and a z-axis high-precision A current source 5 , a superconducting ring 7 and a three-axis Helmholtz coil 8 . The control signal output terminals of the host computer ...

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Abstract

The invention relates to a hybrid magnetic shielding device based on a high temperature superconducting coil. The invention aims at providing a shielding device which has a good shielding capability, has no amplitude dependent performance and is convenient to move. The device comprises an upper computer, a flux-gate meter, three high precision current sources, a superconducting ring and a triaxial Helmholtz coil. A control signal output terminal of the upper computer is connected to control terminals of an x axis high precision current source, a y axis high precision current source and a z axis high precision current source respectively. Current output terminals of the x axis high precision current source, the y axis high precision current source and the z axis high precision current source are connected to three coils with different dimensions on the triaxial Helmholtz coil respectively. A center position of the triaxial Helmholtz coil is provided with the superconducting ring. A center position of the superconducting ring is provided with a three-dimensional flux-gate probe. A signal output terminal of the three-dimensional flux-gate probe is connected to a signal receiving terminal of the flux-gate meter. A signal output terminal of the flux-gate meter is connected to a feedback signal receiving terminal of the upper computer.

Description

technical field [0001] The invention relates to the field of high-temperature superconductivity, in particular to a hybrid magnetic shielding device based on high-temperature superconducting coils. Background technique [0002] Traditional magnetic shields are usually composed of soft magnetic materials based on high magnetic permeability. For the static magnetic shielding technology, it is not to "dodge" the magnetic field, but to attract the magnetic field. Traditional magnetic shielding is processed with high magnetic permeability materials, such as: permalloy, silicon steel plate and pure iron. The casing is like a magnet, which attracts the external magnetic field to the casing, and cannot escape from the casing to enter the interior. Realistic magnetostatic shielding effect, a small amount of magnetic field enters the shell. [0003] High-performance passive magnetic shielding mainly includes the development of magnetic shielding materials and the optimal design of ...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0071
Inventor 王三胜李园园杨吉成王三成杨荣岩
Owner BEIHANG UNIV
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