电子测量与仪器学报

宋思璇,邓明,陈凯,张启升.数字正交基模磁通门传感器电路[J].电子测量与仪器学报,2020,34(5):97-102

数字正交基模磁通门传感器电路

Circuit of digital orthogonal fundamental mode fluxgate sensor

DOI：

英文关键词:orthogonal fundamental mode fluxgate digital demodulation wideband simulation modeling

基金项目:“十三五”国家重点研发计划“高分辨率三轴弱磁传感器”2017YFF0105704 资助项目

作者	单位
宋思璇	1.中国地质大学(北京)地球物理与信息技术学院
邓明	1.中国地质大学(北京)地球物理与信息技术学院
陈凯	1.中国地质大学(北京)地球物理与信息技术学院
张启升	1.中国地质大学(北京)地球物理与信息技术学院

Author	Institution
Song Sixuan	1.School of Geophysics and Information Technology, China University of Geosciences(Beijing)
Deng Ming	1.School of Geophysics and Information Technology, China University of Geosciences(Beijing)
Chen Kai	1.School of Geophysics and Information Technology, China University of Geosciences(Beijing)
Zhang Qisheng	1.School of Geophysics and Information Technology, China University of Geosciences(Beijing)

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中文摘要:

正交基模磁通门相比传统平行激磁二次谐波磁通门具有宽频带、低噪声、小体积的优势。为满足地磁导航、电磁跟踪等领域的应用要求,进一步增大响应带宽,建立了数字正交基模磁通门传感器仿真模型,搭建了由高速 ADC、FPGA、高精度 DAC 组成的硬件电路,采用了磁通门信号数字处理的方案,开发了相关 FPGA 程序,验证了数字解调方案的正确性和可行性。经测试,数字正交基模磁通门传感器带宽达到 15 kHz,具有明显优势,同时在正交补偿、增益校准等智能化方面展现了良好的前景。

英文摘要:

The orthogonal fundamental mode fluxgate has the advantages of wide frequency band, low noise and small volume compared with the traditional parallel excitation second harmonic fluxgate. In order to meet the application requirements in geomagnetic navigation, electromagnetic tracking and other fields, and further increase the response bandwidth, a digital quadrature fundamental mode fluxgate sensor simulation model was established, and a hardware circuit composed of high-speed ADC, FPGA and high-precision DAC was built. The related FPGA program was developed, the correctness and feasibility of the digital demodulation scheme were verified. After testing, the digital quadrature fundamental mode fluxgate sensor has a bandwidth of 15 kHz, which has obvious advantages, and shows a good prospect in the intelligentization of orthogonal compensation and gain calibration.

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