基于磁谐振测量海水电导率的机理分析与验证  

Mechanism Analysis and Verification of Seawater Conductivity Measurement Based on Magnetic Resonance

作　　者：陈立兴 王韬 孔佑迪[2] CHEN Lixing;WANG Tao;KONG Youdi(Army Academy of Armored Forces,Beijing 100072,China;National Ocean Technology Center,Tianjin 300112,China)

机构地区：[1]陆军装甲兵学院,北京100072 [2]国家海洋技术中心,天津300112

出　　处：《海洋技术学报》2024年第6期48-55,共8页Journal of Ocean Technology

基　　金：天津市自然科学基金资助项目(23JCYBJC00590)。

摘　　要：针对咸潮等低电导率海水环境的电导率测量,本文对基于磁谐振系统的海水电导率测量方法进行了重点研究,从不同角度分析了海水涡流对耦合线圈系统的影响,提出了一种此类问题的海水等效电路模型,并重点分析了海水电导率变化对线圈的自感、互感和电阻参数的影响,将原有的模型进行了参数化拓展,推导出了适用于线圈参数分析的相关理论和公式。通过仿真与试验验证了海水电导率变化对系统的影响机理,结果表明:海水电导率主要通过影响线圈周围的电场,进而改变线圈的等效电阻,从而影响系统的测量电压参数。该理论可以为海水等低电导率介质的电导率测量提供支持。This paper focuses on measuring conductivity in low-conductivity seawater environments such as saltwater,and focuses on researching seawater conductivity measurement methods based on magnetic resonance systems.The influence of seawater eddy currents on coupled coil systems is analyzed from different perspectives.A seawater equivalent circuit model for this problem is proposed,and the influence of seawater conductivity changes on the self-inductance,mutual inductance,and resistance parameters of coils is analyzed.The original model is parameterized and expanded,and relevant theories and formulas suitable for coil parameter analysis are derived.The influence mechanism of seawater conductivity changes on the system was verified through simulation and experiments.The results showed that seawater conductivity mainly affects the electric field around the coil,thereby changing the equivalent resistance of the coil and affecting the measured voltage parameters of the system.This theory can support the measurement of conductivity in low-conductivity media such as seawater.

关 键 词：海水涡流 海水电导率测量 平面螺旋线圈 线圈参数 

分 类 号：TN98[电子电信—信息与通信工程]