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Calibration device of vector magnetometer

A technology for calibrating devices and magnetometers, which is applied to measuring devices, instruments, and measuring electrical variables, etc., and can solve problems such as the inability to fully reflect the true error of the three-axis magnetometer

Active Publication Date: 2014-12-10
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are only 40 sets of data used for calibration in the literature, which also cannot fully reflect the true error of the three-axis magnetometer, so it also has limitations

Method used

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  • Calibration device of vector magnetometer
  • Calibration device of vector magnetometer
  • Calibration device of vector magnetometer

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0022] As shown in the figure, this vector (three-component) magnetometer calibration device is made of completely non-magnetic polyethylene material, and the parts are fixed by non-magnetic titanium alloy screws to ensure that the magnetometer is in the calibration experiment. It will not be disturbed by its own magnetic field. It mainly includes a vector magnetometer 4, a base 17, an outer ring rotating device, a middle ring rotating device and an inner ring rotating device, wherein the vector magnetometer 4 is fixed in the center of the inner ring rotating device, and the outer ring rotating device, the middle ring rotating device and the The inner ring rotates the device to change the attitude of the vector magnetometer 4, and the overall schematic diagram of the vector magnetometer calibration device is as follows figure 2 As shown, wherein the magneto...

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Abstract

The invention relates to a calibration device of a vector magnetometer. The calibration device mainly comprises the vector magnetometer, a base, an outer ring rotary device, a middle ring rotary device and an inner ring rotary device. The vector magnetometer is fixed on the inner ring rotary device and is specifically fixed on an inner ring rotary plane, and the magnetometer changes by 360 degrees with a single shaft by turning an inner ring rotary shaft. The magnetometer and an inner ring change together by 360 degrees by turning a middle ring rotary shaft, and the inner ring rotary shaft can also freely rotate by 360 degrees. The magnetometer, a middle ring rotary plane and an inner ring rotary plane can change postures together by 360 degrees by turning an outer ring rotary shaft. The calibration device of the vector magnetometer has the advantages that when the outer ring rotary shaft turns, the inner ring rotary shaft and the middle ring rotary shaft can also freely rotate by 360 degrees, so that a magnetometer sensor has three-degree-of-freedom posture-changing space. During posture changing, a collecting device records magnetic field variation values of the magnetometer in real time, and truer and original error information is provided for error calibration.

Description

technical field [0001] The invention relates to a calibration device, more precisely, a vector magnetometer calibration device. Background technique [0002] The three-axis fluxgate magnetometer can measure the vector (three-component) information of the space geomagnetic field, and can obtain the size and direction data of the coordinate position under certain conditions. Therefore, compared with the total field scalar magnetometer, it can A more comprehensive description of the ambient magnetic field. The full tensor system based on the three-axis magnetometer and the vector gradiometer are widely used in aeromagnetic survey, marine magnetic survey and magnetic target detection. [0003] In theory, the three single-component magnetic probes of the three-axis fluxgate magnetometer should be perpendicular to each other and satisfy the orthogonal coordinate system criterion. However, due to the difference in the level of technology and the degree of hardware calibration, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 赵瑜邓瑞辉黄成功吴文福张谨邹鹏毅郑军
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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