Full-tensor magnetic gradiometer

A magnetic gradiometer and magnetometer technology, applied in the field of measurement, can solve the problems such as the inability to directly measure the 9 parameters of the magnetic field gradient, the invariant of the magnetic field gradient tensor and the modulus of the magnetic field gradient tensor, etc. Stable and reliable performance, simple operation and high test accuracy

Inactive Publication Date: 2012-07-18
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] In summary, the current magnetometer and some tensor magnetic gradiometers cannot directly measure the 9 parameters of the magnetic fiel

Method used

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[0016] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solution and the drawings.

[0017] The switching converter of the present invention includes a power supply 5, a microprocessor 6, a communication interface 7 and an 8×1 matrix electronic switch 4. The magnetometer 2 is connected to the communication interface 7 of the switching converter. The multi-probe device is connected with the 8×1 matrix electronic switch of the switching converter. The 8 probes are connected to the corresponding channels of the switching converter, and the on-off state of the 8 signal channels is controlled by the control circuit, that is, the microprocessor. The magnetometer controls the microprocessor through the communication interface. The microprocessor controls the 8×1 matrix electronic switch in real time. When the matrix electronic switch is connected to a channel, the signal received by the magnetometer is exactly the pr...

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Abstract

The invention discloses a full-tensor magnetic gradiometer, belonging to the technical field of measurement. The full-tensor magnetic gradiometer is characterized by being composed of a multi-probe detection device, a switch converter and a magnetometer, wherein the multi-probe detection device is composed of eight probes, which are arranged in an array of eight cubic top points; and the switch converter is composed of a power supply, a microprocessor, a communication interface and an 8*1 matrix electronic switch. The full-tensor magnetic gradiometer has the effects and advantages that: nine parameters, invariant and modulus of magnetic field gradient tensor can be measured; and the full-tensor magnetic gradiometer is simple in structure and high in precision, and can be applied to underwater object positioning, metal object detection, water area detection, urban engineering object detection, archaeology and geophysical prospecting.

Description

technical field [0001] The invention belongs to the technical field of measurement, and relates to a full tensor magnetic gradient meter, which is used for magnetic field measurement. Background technique [0002] The magnetic field is a vector field with direction and magnitude. In three-dimensional space, it has three components B of magnetic induction x , B y , B z , at the same time, the magnetic field gradient can be used by 9 (3×3 matrix) parameters B xx , B xy , B xz , B yx , B yy , B yz , B zx , B zy , B zz composed of tensors to represent. The magnetic field gradient tensor can obtain more information reflecting the characteristics and details of the field source, which is very important for the interpretation of magnetic anomalies. Measuring the spatial change rate of the magnetic field component, that is, the magnetic field gradient tensor, is currently a hot spot in the research and development of geophysics in various countries, and can be applied to...

Claims

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Application Information

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IPC IPC(8): G01R33/022
Inventor 江胜华周智欧进萍
Owner DALIAN UNIV OF TECH
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