Spherical feedback tricomponent fluxgate magnetic full-tenser gradiometer

A three-component, fluxgate technology, applied in the field of geophysical exploration devices, can solve problems such as large system errors, difficult to eliminate, feedback coil interference, etc., to achieve the effects of easy calibration, reducing baseline distance, and avoiding mutual interference

Inactive Publication Date: 2013-02-13
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem with this method is that the feedback coil acting on one fluxgate will interfere with other fluxgates
In the actual implementation process, due to the influence of inevitable installat

Method used

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  • Spherical feedback tricomponent fluxgate magnetic full-tenser gradiometer
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  • Spherical feedback tricomponent fluxgate magnetic full-tenser gradiometer

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment for further detailed description:

[0022] The spherical feedback three-component fluxgate magnetic gradient full tensor probe is engraved on the surface of the spherical non-conductive material with enameled wire winding grooves of equal width, different depth and equal spacing distributed in three directions parallel to the Cartesian coordinate system; There are more than three three-component fluxgate sensors inside, and the three-component fluxgate sensors are fixed on the cross-shaped bracket inside the sphere by bolts, and the control circuit is installed outside the sphere, and the three-component fluxgate sensors are connected to the three-axis spherical ball The feedback coil forms a closed loop to form a three-component fluxgate magnetic gradient full tensor probe.

[0023] The distribution of three-component fluxgate sensors in the sphere is that the first three-component fluxgate sensor 1 and the ...

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Abstract

The invention relates to a spherical feedback tricomponent fluxgate magnetic full-tenser gradiometer. Three mutually perpendicular crossed enameled wire winding slots are carved on the surface of a spherical non-conductive material, and more than three tricomponent fluxgate sensors are mounted in the sphere and connected with a triaxial spherical feedback coil to form a closed loop through a control circuit so as to further form the tricomponent fluxgate magnetic full-tenser gradiometer. Compared with the prior art, the uniform field generated by the spherical coil is larger than that generated by other feedback coils; under the same uniformity, the spherical feedback coil occupies the minimum volume; the plurality of fluxgate sensors are placed in one triaxial spherical coil, the fluxgate is in a stable working state in the environment close to zero magnetism, so that mutual interference of the feedback coils during feedback of each fluxgate is avoided, the calibration is facilitated, the baseline distance is greatly shortened, and the system precision is improved. The spherical feedback tricomponent fluxgate magnetic full-tenser gradiometer is particularly suitable for being used in aeronautical, aerospace and other space-limited environments and has a wider application range.

Description

Technical field: [0001] The invention relates to a geophysical exploration device, in particular to a spherical feedback three-component fluxgate magnetic gradient full tensor probe. Background technique: [0002] The magnetic gradient tensor probe is a sensor that measures the rate of change of the magnetic field in space along the three directions of xyz in the rectangular coordinate system. Since this type of sensor needs to be sensitive to the direction of the magnetic field, there are currently two main ways to realize the tensor probe. One is a combination of superconducting quantum interference devices, such as the German LTS-SQUID aviation full-tensor magnetic gradient tensor [ R.Stolz et al, Magnetic full-tensor SQUID gradiometer system for geophysical applications, The Leading Edge, 2006, 25(2):178-180.], Australian GETMAG magnetic gradient tensor [P.Schmidt et al, GETMAG-a SQUID magnetic tensor gradientometer for mineral and oil exploration, Exploration Geophysic...

Claims

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Application Information

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IPC IPC(8): G01V3/10
Inventor 随阳轶李光林君王世隆
Owner JILIN UNIV
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