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Flux-gate type wide-range magnetometer

A wide-range, fluxgate technology, applied in the field of fluxgate wide-range magnetometers, can solve the problems of lack of strong magnetic field detection methods and inability to develop, and achieve the effects of light weight, intuitive display and convenient operation

Inactive Publication Date: 2012-07-11
中国人民解放军91872部队上海研究室
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Problems solved by technology

[0002] During the degaussing process of the ship, the degaussing cable generates a strong magnetic field with an intensity of up to 1600A / M in the space around the ship. This strong magnetic field will have an impact on the technical performance and safety of the shipboard system and the magnetically sensitive components of the equipment. To master and evaluate the specific degree of this effect, it is necessary to accurately measure the strong magnetic field during degaussing, but due to the lack of detection methods for such a strong magnetic field, this work has not been able to be carried out

Method used

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  • Flux-gate type wide-range magnetometer
  • Flux-gate type wide-range magnetometer
  • Flux-gate type wide-range magnetometer

Examples

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Embodiment

[0018] Example: such as figure 1 The strong magnetic field measurement recorder based on the embedded control system shown is mainly composed of ARM controller, probe, magnetic field measurement circuit, VFD display module, data storage circuit, real-time clock circuit, keyboard and USB, serial communication interface circuit, CPU monitoring circuit And power supply and other components.

[0019] Such as figure 2 As shown, the magnetic field measurement circuit consists of four parts: a probe, an oscillation excitation circuit, a signal measurement circuit and a calibration circuit. The circuit adopts a closed-loop system to improve the measurement range of the probe and ensure the measurement accuracy. When measuring large-range and small-range magnetic fields, the feedback resistance automatic switching circuit is used, and the feedback coefficient is automatically adjusted to adjust the gain, so that the measurement range of ±2000μT can be achieved without affecting the ...

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Abstract

The invention relates to the field of measurement tools, in particular to a flux-gate type wide-range magnetometer which is characterized in that a magnetic field measurement circuit comprises an oscillation excitation circuit, a filtering, phase-sensitive demodulating and integrating circuit, a feedback circuit and a calibrating circuit, wherein the oscillation excitation circuit is connected with the probe and the filtering, phase-sensitive demodulating and integrating circuit, and the calibrating circuit is connected with the oscillation excitation circuit. The invention has the advantage of realizing three-component high-resolution (1nT) and high precision (0.2%) measurement of a strong magnetic field with a range of -2000mu T-2000muT. An embedded control system structure is adopted in the flux-gate type wide-range magnetometer, the characteristics of VFD (Vacuum Fluorescent Display) large-screen display, convenience for operation and visual display are obtained, and functions of automatic zero calibration and automatic measurement are achieved. The flux-gate type wide-range magnetometer is stable and reliable, can be used for carrying out measurement and recording automatically for a long time, provides multiple forms of communication interfaces such as internet, USB and RS-232 communication interface, and has the advantages of small volume and light weight.

Description

technical field [0001] The invention relates to the field of measuring instruments, in particular to a fluxgate type wide-range magnetometer. Background technique [0002] During the degaussing process of the ship, the degaussing cable generates a strong magnetic field with an intensity of up to 1600A / M in the space around the ship. This strong magnetic field will have an impact on the technical performance and safety of the shipboard system and the magnetically sensitive components of the equipment. To master and evaluate the specific degree of this effect, it is necessary to accurately measure the strong magnetic field during degaussing, but due to the lack of detection methods for such a strong magnetic field, this work has not been able to be carried out. Contents of the invention [0003] The purpose of the present invention is to provide a fluxgate wide-range magnetometer according to the shortcomings of the above-mentioned prior art. The magnetometer improves and op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/02
Inventor 衣军侯大志陈征峰
Owner 中国人民解放军91872部队上海研究室
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