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Absolute magnetic field measuring equipment and applicable absolute magnetic field measuring method

A magnetic field measurement and absolute measurement technology, which is applied in the direction of the size/direction of the magnetic field, and the use of superconducting devices for magnetic field measurement, etc., can solve the problem that the absolute magnetic field cannot be measured with high precision, and achieve high sensitivity and high measurement bandwidth.

Inactive Publication Date: 2017-08-29
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an absolute magnetic field measurement device and an applicable absolute magnetic field measurement method, which are used to solve the problem that the absolute magnetic field cannot be high-precision when the transient bandwidth is too large in the prior art. measurement problem

Method used

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  • Absolute magnetic field measuring equipment and applicable absolute magnetic field measuring method
  • Absolute magnetic field measuring equipment and applicable absolute magnetic field measuring method
  • Absolute magnetic field measuring equipment and applicable absolute magnetic field measuring method

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Embodiment Construction

[0023] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] see figure 1 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered.

[0025] Such as figu...

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Abstract

The invention provides an absolute magnetic field measuring device and an absolute magnetic field measuring method thereof. The absolute magnetic field measuring device comprises a three-axis superconducting quantum interference device magnetometer, a three-axis fluxgate meter and a data collecting and processing device. The three-axis superconducting quantum interference device magnetometer is arranged in a superconducting environment. The three-axis fluxgate meter is located in the same magnetic field environment with the three-axis superconducting quantum interference device magnetometer and arranged in a normal-temperature environment. The data collecting and processing device is used for fitting of the absolute measurement fitted values of the magnetic field environment through the relative measurement values measured by superconducting quantum interference device sensors located in all the axial directions so that the mean square error between the magnetic field fitted values and the absolute magnetic field values measured by the three-axis fluxgate meter can be the smallest, and the absolute value of the magnetic field environment is determined according to the relative measurement values measured by the three-axis superconducting quantum interference device magnetometer and the direct-current component in all the fitted absolute measurement fit values. According to the absolute magnetic field measuring device and the absolute magnetic field measuring method thereof, when a magnetic field changes at a moment, the absolute measurement values of the magnetic field can be precisely measured.

Description

technical field [0001] The invention relates to an absolute magnetic field measurement technology, in particular to an absolute magnetic field measurement device and an applicable absolute magnetic field measurement method. Background technique [0002] Magnetic field measurement is of great significance in cosmic astronomy, biomedicine, and geophysical exploration. For example: cosmic geomagnetic measurement, magnetic brain / heart magnetic signal measurement and diagnosis, large geomagnetic signal measurement and exploration, etc. How to accurately measure the magnetic field signal, especially the absolute magnetic field signal, is crucial in the magnetic signal inversion process. [0003] The currently used absolute magnetic field measurement equipment uses a fluxgate meter to measure the absolute magnetic field of a magnetic field environment. The noise of the fluxgate magnetic sensor is the lowest at about 10pT / Hz1 / 2, and the bandwidth is relatively low at less than 3kH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/035
Inventor 常凯徐婷荣亮亮孔祥燕谢晓明
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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