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Method of Compensating Non-uniformity of Shielded Magnetic Field Coil by Winding

A technology for shielding magnetic field coils and non-uniformity, which is applied to the non-uniformity compensation of shielding magnetic field coils. Through winding compensation in the field of non-uniformity compensation of shielding magnetic field coils, it can solve the problem of poor uniformity of shielding magnetic field coils.

Inactive Publication Date: 2016-01-20
710TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

[0004] In view of this, the present invention provides a method for compensating the inhomogeneity of the shielding magnetic field coil through the winding, which can compensate the magnetic field inhomogeneity caused by the change of the distribution of the magnetic field lines inside the magnetic field coil due to the interaction between the magnetic shielding layer and the magnetic field coil, thereby effectively Solve the problem that the uniformity of the shielded magnetic field coil is greatly deteriorated

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  • Method of Compensating Non-uniformity of Shielded Magnetic Field Coil by Winding
  • Method of Compensating Non-uniformity of Shielded Magnetic Field Coil by Winding
  • Method of Compensating Non-uniformity of Shielded Magnetic Field Coil by Winding

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Embodiment Construction

[0038] The following describes the present invention in further detail with reference to the accompanying drawings and embodiments to more clearly illustrate the technical solutions of the present invention.

[0039] This embodiment provides a method for compensating the non-uniformity of the shielding magnetic field coil by winding. The method reduces the magnetic field non-uniformity of the shielding magnetic field coil from 2% to 3% to 0.1 by adding a corresponding compensation winding outside the shielding magnetic field coil. %~0.2%, in order to achieve the purpose of compensating the non-uniformity of the shielding magnetic field coil, so as to meet the calibration test requirements of most current weak magnetic field magnetic sensors.

[0040] The specific steps of the method are:

[0041] Step 1: Put the magnetic field coil used to generate the standard magnetic field into the magnetic shielding device to form a shielded magnetic field coil;

[0042] Step 2: Measure the non-un...

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Abstract

The invention provides a method for compensating heterogeneity of a shield magnetic field coil through a winding. The shield magnetic field coil is wound by the compensating winding with the particular specification, and distribution of magnetic lines of force of an original magnetic field coil is changed through the compensating winding, so that the heterogeneity of the shield magnetic field coil is increased in a magnitude mode. The magnetic field generated by the compensating winding has equal magnetic force and the opposite direction with the heterogeneous field additionally produced because a magnetic shield layer changes distribution of the magnetic lines of force in the magnetic field coil, and therefore the purpose of compensating the heterogeneity of the shield magnetic field is achieved.

Description

Technical field [0001] The invention relates to a non-uniformity compensation technology of a shielded magnetic field coil, in particular to a method for compensating the non-uniformity of a shielded magnetic field coil through winding compensation, and belongs to the field of electromagnetic technology. Background technique [0002] In the calibration test of the weak magnetic field magnetic sensor, in order to shield the influence of the environmental interference magnetic field, a combination of shielding device and magnetic field coil is often used. That is, the magnetic field coil used to generate the standard magnetic field is placed in the center of the shielding device to form a shielded magnetic field coil. At this time, there is a stable standard magnetic field in the shielding device, and the weak magnetic field to be detected is calibrated by the standard magnetic field. [0003] However, the increase of the shielding device will affect the uniformity of the standard m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/18
Inventor 程华富翟晶晶李享
Owner 710TH RES INST OF CHINA SHIPBUILDING IND CORP
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