质子磁梯度仪设计及其灵敏度评估

吉林大学学报(信息科学版) ›› 2025, Vol. 43 ›› Issue (2): 245-250.

质子磁梯度仪设计及其灵敏度评估

由德龙¹, 张爽¹, 陈曙东¹, 赵明欣², 孟繁骏³

1. 吉林大学电子科学与工程学院, 长春 130012; 2. 中国第一汽车股份有限公司研发总院,长春 130013; 3. 吉林警察学院警务技能与技术教研部, 长春 130123

收稿日期:2024-01-29 出版日期:2025-04-08 发布日期:2025-04-09
通讯作者: 陈曙东(1985— ),男,江苏盐城人,吉林大学副教授,博士,硕士生导师,主要从事瞬变电磁理论与应用研究,(Tel)86-15948756649(E-mail)chenshudong@ jlu. edu. cn。 E-mail:chenshudong@ jlu. edu. cn
作者简介:由德龙(1997— ),男,黑龙江绥化人,吉林大学硕士研究生,主要从事电磁传感理论与技术研究,(Tel)86-18843009283(E-mail)1564898075@ qq. com
基金资助:
国家自然科学(面上)基金资助项目(61771218); 吉林省高教科研常规课题基金资助项目(JGJX2022D480)

Design and Sensitivity Evaluation of Proton Magnetic Gradiometer

YOU Delong¹, ZHANG Shuang¹, CHEN Shudong¹, ZHAO Mingxin², MENG Fanjun³

1. College of Electronic Science and Engineering, Jilin University, Changchun 130012, China;2. General Institute of FAW, China FAW Group Company Limited, Changchun 130013, China;3. Police Skils and Tactics Teaching and Research Department, Jilin Police College,Changchun 130123, China

Received:2024-01-29 Online:2025-04-08 Published:2025-04-09

摘要/Abstract

摘要： 由于单一传感器的质子磁力仪极易受地磁日变、环境干扰等影响, 为提高质子磁力仪测量精度, 对传感器设计和系统性能评估进行了分析研究。首先, 基于MAXWELL 电磁仿真软件建立螺线管、柱形、环形以及"8"冶形线圈等4种传感器的仿真模型, 对4种线圈的方向性、抗干扰能力等进行分析, 最终确定以"8"冶形线圈作为传感器, 构建质子磁梯度仪。其次, 基于4阶差分与均方差算法分别对单路测量结果与差分测量结果进行评估, 以分析磁梯度仪性能。实验结果表明, "8"冶形线圈传感器的初始信号信噪比可达 40 / 1, 磁力仪单路模式灵敏度可达0.054 nT, 双路差分模式的灵敏度即使在强干扰条件下仍可达 0. 071 nT, 为单路模式的√2倍。

关键词: 拉莫尔效应, 质子磁梯度仪, 灵敏度, 传感器

Abstract: A proton magnetometer is a type of geomagnetic field measuring instrument based on the Larmor precession effect. However, a proton magnetometer with a single sensor is easily affected by geomagnetic diurnal variation and environmental interference. To improve the measurement accuracy of the proton magnetometer, sensor design and system performance evaluation are studied. Firstly, based on MAXWELL electromagnetic simulation software, simulation models of four kinds of sensors are established, including solenoid, cylindrical coil, ring coil, and "8" coil, and the directivity and anti-interference ability of the four coils are analyzed. Finally, it is determined that the "8" coil is used as the sensor to build a proton magnetic gradiometer. Secondly, the single and differential measurement results based on the fourth-order difference and mean square error algorithms are evaluated to analyze the performance of the magnetic gradiometer. The experimental results show that the initial signal-to-noise ratio of the "8"coil sensor can reach 40 / 1, the sensitivity of the single-channel mode can reach 0. 054 nT, and the sensitivity of the dual-channel differential mode can reach 0. 071 nT even under strong interference conditions, which is √2 times that of the single-channel mode.

Key words: Larmor effect, proton magnetic gradiometer, sensitivity, sensor

中图分类号:

TP202+. 3

由德龙, 张爽, 陈曙东, 赵明欣, 孟繁骏. 质子磁梯度仪设计及其灵敏度评估[J]. 吉林大学学报(信息科学版), 2025, 43(2): 245-250.

YOU Delong, ZHANG Shuang, CHEN Shudong, ZHAO Mingxin, MENG Fanjun. Design and Sensitivity Evaluation of Proton Magnetic Gradiometer[J]. Journal of Jilin University (Information Science Edition), 2025, 43(2): 245-250.

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