Digital analysis of geomagnetic signals measured by fluxgate

YANG Zhi-jie; CHEN Guo-guang; ZHU Yi-jia; FAN Xu; BAI Dun-zhuo

doi:10.13873/j.1000-9787(2017)09-0025-04

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Digital analysis of geomagnetic signals measured by fluxgate

更新时间：2025-09-11

- Digital analysis of geomagnetic signals measured by fluxgate
- Vol. 36, Issue 9, Pages: 25-28+31(2017)
- 作者机构：
  
  1. 中北大学机电工程学院
  2. 豫西工业集团
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-9787(2017)09-0025-04
  CLC： TP212
- Published：2017
- 稿件说明：
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[1]杨智杰,陈国光,朱宜家,范旭,白敦卓.磁通门测量地磁信号的数字化分析[J].传感器与微系统,2017,36(09):25-28+31.

YANG Zhi-jie, CHEN Guo-guang, ZHU Yi-jia, et al. Digital analysis of geomagnetic signals measured by fluxgate[J]. 2017, 36(9): 25-28+31.
[1]杨智杰,陈国光,朱宜家,范旭,白敦卓.磁通门测量地磁信号的数字化分析[J].传感器与微系统,2017,36(09):25-28+31. DOI： 10.13873/j.1000-9787(2017)09-0025-04.

YANG Zhi-jie, CHEN Guo-guang, ZHU Yi-jia, et al. Digital analysis of geomagnetic signals measured by fluxgate[J]. 2017, 36(9): 25-28+31. DOI： 10.13873/j.1000-9787(2017)09-0025-04.

摘要

针对现有的磁通门信号处理电路仍以模拟元件为主

电路较为复杂的缺点

提出了一种以数字信号处理器（DSP）为主的信号处理系统

优化磁通门传感器的结构

提高了磁通门传感器的抗干扰能力。根据双磁芯磁通门的基本原理

建立了磁通门数学模型并采用Simulink信号处理模块模拟DSP对磁通门输出信号进行处理;针对双磁芯磁通门上、下磁芯不一致产生的磁通门信号噪声

采用带通滤波方法进行了滤波

仿真结果与理想状态下双铁芯磁通门的输出一致

系统分辨力达到3 n T。通过实验数据与仿真数据的对比

验证了DSP信号处理系统的可行性。

Abstract

Aiming at the shortcomings of the existing fluxgate signal processing circuit

which is mainly based on analog components and circuit is complicated

a kind of signal processing system based on digital signal processor（ DSP） is proposed to optimize the structure of the fluxgate sensor

improving the anti-jamming capability of fluxgate sensor. According to the basic principle of double magnetic flux gate

a mathematical model for fluxgate is established

and the Simulink signal processing module is used to simulate the DSP to process the fluxgate output signal; aiming at fluxgate generated by signal noise of double core magnetic fluxgate up and down core and the simulation results are in accordance with the output of the double-core fluxgate in the ideal state. The system resolution is 3 n T. By comparison of the experimental data and the simulation data

verify the feasibility of signal processing system.

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references

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