摘要
针对金属探测器探头输出电压幅值与金属目标特性和激励信号频率关系不明确的问题,对金属探测器探头进行研究。利用连续谐变的频率域电磁感应法探测技术,提出了一种有效的有限元模型。通过Ansys电磁仿真软件对平衡式线圈进行三维建模仿真,研究了金属目标的材料、大小、位置以及激励信号频率与接收线圈输出电压幅值之间的关系。仿真结果表明:激励信号频率在1~10 kHz范围内对非铁磁性金属具有较高的探测灵敏度;10~25 kHz范围内对铁磁性金属具有较高的探测灵敏度。最后,通过实验验证了仿真的有效性。研究结果对后续多频电磁感应探测技术的频率选择具有一定的参考意义。
Aiming at the problem of unclear relationship between output voltage amplitude of metal detector probe and characteristics of metal target and the frequency of the excitation signal.Metal detector probe is researched,and an effective finite element model is proposed by using continuous harmonic frequency domain electromagnetic induction detection technology.The three-dimensional modeling and simulation of the balanced coil is carried out through Ansys electromagnetic simulation software,and the relationship between the material,size,position of the metal target and the frequency of the excitation signal and amplitude of output voltage of receiving coil are studied.The simulation results show that the excitation signal frequency has high detection sensitivity for non-ferromagnetic metals in the range of 1~10 kHz,and high detection sensitivity for ferromagnetic metals in the range of 10~25 kHz.Finally,the effectiveness of the simulation is verified through experiments.The research results have certain reference significance for frequency selection of subsequent multi-frequency electromagnetic induction detection technology.
作者
骆斌
汪海勇
张勇
陈杰
LUO Bin;WANG Haiyong;ZHANG Yong;CHEN Jie(School of Electronics and Information Engineering,Hangzhou Dianzi University,Hangzhou 310018,China;The 50th Research Institute of China Electronics Technology Group Corporation,Shanghai 200331,China)
出处
《传感器与微系统》
CSCD
北大核心
2022年第5期57-59,63,共4页
Transducer and Microsystem Technologies
