微型磁通门传感器的激励仿真设计

发布时间：2018-08-15 11:38

【摘要】：微型磁通门传感器因具有功耗低、灵敏度高、分辨率高、结构简单和成本低等特点,被广泛应用于地球物理勘探、地磁导航、太空环境监测、医学诊疗等弱磁场测量领域。而对于该传感器,激励效果的好坏直接决定整套系统的性能,因而有必要为激励模块建立准确的仿真模型。基于法拉第电磁感应定律对双铁芯磁芯结构进行数学建模,并给出正弦波激励下电压、磁场量等物理量的波形。依据中国科学院地质与地球物理研究所研制的磁通门磁强计KDM-01的结构参数构建激励模块的仿真模型,得到的仿真结果与测试结果基本一致。并将该模型应用于设计的磁强计中,测试数据与标准磁强计非常近似。两者证明了所建立的数值模型的有效性和准确性。
[Abstract]:Micro fluxgate sensor has been widely used in the fields of geophysical exploration, geomagnetic navigation, space environment monitoring, medical diagnosis and treatment for its advantages of low power consumption, high sensitivity, high resolution, simple structure and low cost. For the sensor, the effect of excitation directly determines the performance of the whole system, so it is necessary to establish an accurate simulation model for the excitation module. Based on Faraday's law of electromagnetic induction, the structure of double core magnetic core is modeled, and the waveforms of voltage, magnetic field and other physical quantities excited by sine wave are given. According to the structural parameters of the fluxgate magnetometer KDM-01 developed by Institute of Geology and Geophysics of the Chinese Academy of Sciences the simulation model of the excitation module is constructed and the simulation results are in good agreement with the test results. The model is applied to the designed magnetometer, and the test data are very similar to the standard magnetometer. The validity and accuracy of the established numerical model are proved.
【作者单位】：苏州大学电子信息学院;中国科学院声学研究所;中国科学院地质与地球物理研究所;
【基金】：国家重大科研装备专项(ZDYZ2012-1-01-02) 中国科学院青年创新促进会项目(TANG LIANG)
【分类号】：TP212.1

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