质子磁场传感器类方形线圈结构参数设计
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摘要
为提高质子磁场传感器输出信号幅度和信噪比,提出了一种针对质子磁场传感器的类方形电感线圈结构。在传感器腔体内径限定的约束条件下,以感应电动势幅值最大化为目标,对类方型线圈和圆形线圈的结构参数进行优化设计,计算线圈尺寸参数;根据计算结果,利用COMSOL软件建立线圈等效仿真模型,得到线圈内部磁场参数,结合实际制作的线圈电感量,理论计算得出类方形线圈接收的感应信号幅度比圆形线圈高1.59倍;对比实验结果表明类方形线圈感应信号的幅度是圆形线圈的1.43倍,且感应信号的信噪比提高了3.1dB。
In order to improve the output signal amplitude and signal-to-noise ratio( SNR) of proton magnetic field sensor,a square inductor coil structure is proposed. For maximizing the amplitude of induction electromotive force under the constraints of the sensor cavity's inner diameter fixed,the parameters of the square coil structure are optimized. According to the results of the calculation,the internal magnetic field parameters of the coil are obtained by simulation using COMSOL software,combine with the inductance of made coils,the theoretical calculation shows that the magnitude of the induction signal received by the square coil is 1.59 times higher than that of the circular coil. The comparison results show that the inductive signal amplitude of the square coil is 1.43 times higher than that of the circular coil,and the SNR of the induction signal is increased by 3.1 dB.
In order to improve the output signal amplitude and signal-to-noise ratio( SNR) of proton magnetic field sensor,a square inductor coil structure is proposed. For maximizing the amplitude of induction electromotive force under the constraints of the sensor cavity's inner diameter fixed,the parameters of the square coil structure are optimized. According to the results of the calculation,the internal magnetic field parameters of the coil are obtained by simulation using COMSOL software,combine with the inductance of made coils,the theoretical calculation shows that the magnitude of the induction signal received by the square coil is 1.59 times higher than that of the circular coil. The comparison results show that the inductive signal amplitude of the square coil is 1.43 times higher than that of the circular coil,and the SNR of the induction signal is increased by 3.1 dB.
引文
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[2]Prouty M,Smith K,Johnson R.Performance Considerations for Total Field Magnetometers[J].Proceedings of IEEE Sensors,2003,2(1):483-486.
[3]Lenz J,Edelstein A S.Magnetic Sensors and Their Applications[J].IEEE Sensors Journal,2006,6(3):631-649.
[4]易晓峰,林君,段清明.基于双匝线圈的轻便式核磁共振找水仪研制[J].仪器仪表学报,2013,34(1):1-10.
[5]张爽,周前伟,陈曙东,等.基于DSP的JPM-1型质子磁力仪研制[J].吉林大学学报(信息科学版),2014,32(5):509-515.
[6]何志伟.基于MSP430的质子旋进磁力仪设计[D].吉林大学,2007.
[7]于宝显,杜利明,王怀坤,等.不同型号质子磁力仪之间数据共享[J].内蒙古煤炭经济,2013(5):110-111.
[8]Pang H,Luo S,Zhang Q,et al.Calibration of a Fluxgate Magnetometer Array and Its Application in Magnetic Object Localization[J].Measurement Science and Technology,2013,24(7):75-102.
[9]张明.水下磁性目标探测系统研制[D].杭州:杭州电子科技大学,2017.
[10]Dong H,Liu H,Ge J,et al.A High-Precision Frequency Measurement Algorithm for FID Signal of Proton Magnetometer[J].IEEETransactions on Instrumentation and Measurement,2016,65(4):898-904.
[11]Liu H,Dong H,Liu Z,et al.Application of Hilbert-Huang Decomposition to Reduce Noise and Characterize for NMR FID Signal of Proton Precession Magnetometer[J].Instruments and Experimental Techniques,2017,61(1):55-64.
[12]王洪亮.质子磁力仪FID信号处理算法研究[D].中国地质大学,2012.
[13]吴苍生,戴光曦,刘功谆,等.弱磁场中质子的自由进动和一个野外测磁场的实验[J].物理学报,1965,21(6):1175-1187.
[14]李暂.Overhauser磁力仪传感器研究与设计[D].吉林大学,2017.
[15]葛健,赵志卓,董浩斌,等.直流脉冲极化质子旋进磁力仪磁场传感器的设计[J].仪器仪表学报,2014,35(4):850-858.
[16]王应吉,刘珈言,于雷,等.质子磁力仪传感器线圈参数的研究与设计[J].传感技术学报,2014(11):1506-1511.