光泵磁力仪磁屏蔽筒的尺寸设计
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摘要
为设计原子光泵磁力仪中的高屏蔽效能磁屏蔽体,修正了多层磁屏蔽筒轴向屏蔽效能公式,并对比验证多层磁屏蔽筒各尺寸参数对轴向屏蔽效能的影响。对3层磁屏蔽筒模型应用Ansoft Maxwell建模仿真得到中心点磁屏蔽效能159.77 d B,公式计算结果为167.5 d B,研究结果表明修正的磁屏蔽筒轴向屏蔽系数公式比现阶段研究中的屏蔽筒轴向屏蔽系数公式(170.5 d B)具有更高的准确度,且参数对磁屏蔽效能的影响趋势与仿真具有较高的一致性。在其他尺寸参数相同情况下,3层磁屏蔽筒轴向长度间隔为46.5 mm时,轴向屏蔽效能存在最优值167.486 d B,在地磁场环境中剩磁小于0.6 p T,对磁屏蔽筒的尺寸设计具有重要指导意义。
To design magnetic shielding body with high magnetic shielding effectiveness for optical pumped magnetometer,the axial magnetic shielding cylinder effectiveness formula of multi-layer is corrected. Effect of each dimension parameter on multi-layer axial magnetic shielding cylinder effectiveness is verified by contrast. Ansoft Maxwell model simulation is used on 3-layer magnetic shielding to obtain the magnetic shielding effectiveness of the center point of 159. 77 d B,the calculation result of the formula is 167. 5 d B. The results show that the axial shielding coefficient of the modified magnetic shielding formula has higher accuracy than the axial shielding coefficient formula( 170. 5 d B) in the current research. The influence trend of parameters on magnetic shielding performance is highly consistent with the simulation. In the case of other size parameters are the same,axial magnetic shielding effectiveness exists the optimal value of 167. 486 d B,remanence in geomagnetic field environment is 0. 6 p T when the axial interval of three-layer magnetic shielding cylinder is 46. 5 mm,which has guiding significance in magnetic shielding cylinder design.
To design magnetic shielding body with high magnetic shielding effectiveness for optical pumped magnetometer,the axial magnetic shielding cylinder effectiveness formula of multi-layer is corrected. Effect of each dimension parameter on multi-layer axial magnetic shielding cylinder effectiveness is verified by contrast. Ansoft Maxwell model simulation is used on 3-layer magnetic shielding to obtain the magnetic shielding effectiveness of the center point of 159. 77 d B,the calculation result of the formula is 167. 5 d B. The results show that the axial shielding coefficient of the modified magnetic shielding formula has higher accuracy than the axial shielding coefficient formula( 170. 5 d B) in the current research. The influence trend of parameters on magnetic shielding performance is highly consistent with the simulation. In the case of other size parameters are the same,axial magnetic shielding effectiveness exists the optimal value of 167. 486 d B,remanence in geomagnetic field environment is 0. 6 p T when the axial interval of three-layer magnetic shielding cylinder is 46. 5 mm,which has guiding significance in magnetic shielding cylinder design.
引文
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[16]张红,陈熙源,邹升.原子自旋磁强计磁屏蔽筒参数优化设计[J].东南大学学报(自然科学版),2014,44(6):1177-1180.ZHANG H,CHEN X Y,ZOU SH.Parameter optimization design of magnetic shielding cylinders for atomic spin magnetometer[J].Journal of Southeast University(Natural Science Edition),2014,44(6):1177-1180.
[17]贾智伟,符涛.基于三维发射线圈的肠道机器人无线供能系统[J].电子测量与仪器学报,2016,30(2):291-296.JIA ZH W,FU T.Wireless power transmission system of intestinal robot based on three-dimension transmitting coil[J].Journal of Electronic Measurement and Instrumentation,2016,30(2):291-296.
[2]王言章,张雪,秦佳男,等.Bell-Bloom型SERF原子磁力仪综述[J].仪器仪表学报,2016,37(12):2648-2656.WANG Y ZH,ZHANG X,QIN J N,et al.Review of bell-bloom spin-exchange-relaxation-free atomic magnetometer[J].Chinese Journal of Scientific Instrument,2016,37(12):2648-2656.
[3]张振宇,程德福,连明昌,等.氦光泵磁力仪信号检测控制回路的设计[J].电子测量与仪器学报,2011,25(4):366-371.ZHANG ZH Y,CHENG D F,LIAN M CH,et al.Design of 4He optically pumped magnetometer’s signal detection and control loop[J].Journal of Electronic Measurement and Instrument,2011,25(4):366-371.
[4]张晚英,张杰峰,施乐,等.含超导的多层屏蔽体磁屏蔽特性的仿真研究[J].低温物理学报,2017,39(2):16-22.ZHANG W Y,ZAHNG J F,SHI L,et al.Simulation research of magnetic shielding efficiency of superconducting/ferromagnetic systems[J].Chinese Journal of Low Temperature Physics,2017,39(2):16-22.
[5]林国营,潘峰,易斌,等.现场校准用磁调制式直流电流比较仪磁屏蔽结构仿真研究与设计[J].电测与仪表,2017,54(1):8-15.LIN G Y,PAN F,YI B,et al.Simulation study and design of the magnetic shielding structure of the DC current comparator based on magnetic modulator for field calibration[J].Electrical Measurement&Instrumentation,2017,54(1):8-15.
[6]李园园,王祝宁,王三胜.适用于超高灵敏磁测量的新型高效磁屏蔽研究[J].物理,2017,46(5):307-310.LI Y Y,WANG ZH N,WANG S SH.A new type of passive magnetic shielding for superconducting quantum interferometers[J].Physics,2017,46(5):307-310.
[7]RABBERS J J,OOMEN M P,BASSANI E,et al.Magnetic shielding capability of Mg B2 cylinders[J].Superconductor Science and Technology,2010,23(12):125003.
[8]DONLEY E A,HODBY E,HOLLBERG L,et al.Demonstration of high-performance compact magnetic shields for chip-scale atomic devices[J].Review of Scientific Instruments,2007,78(8):1460.
[9]KORNACK T W,SMULLIN S J,LEE S K,et al.A low-noise ferrite magnetic shield[J].Applied Physics Letters,2007,90(22):67.
[10]李金涛,房建成.高精度光纤IMU的磁屏蔽方法及实验研究[J].航空学报,2011,32(11):2106-2116.LI J T,FANG J CH.Magnetic shielding method and experiment study of inertial measurement unit based on high precision fiber-optic gyroscope[J].Acta Aeronautica et Astronautica Sinica,2011,32(11):2106-2116.
[11]谌尧周,王夏霄,高洋洋,等.地磁场对高精度光纤陀螺仪零偏的影响机理研究[J].电子测量技术,2016,39(1):147-150.ZHAN Y ZH,WANG X X,GAO Y Y,et al.Research on the influence mechanism of earth’s magnetic field on zero bias of high precision fog[J].Electronic Measurement Technology,2016,39(1):147-150.
[12]葛欣宏,宁飞,李晓林.光电系统监测设备电磁屏蔽设计的系统法研究[J].国外电子测量技术,2014,33(9):42-45,58.GE X Y,NI F,LI X L.Monitoring equipment’s shield design used system method in optoelectronic system[J].Foreign Electronic Measurement Technology,2014,33(9):42-45,58.
[13]焦重庆,牛帅.开孔矩形腔体的近场电磁屏蔽效能研究[J].物理学报,2013,62(11):234-242.JIAO CH Q,NIU SH.Shielding effectiveness of an apertured rectangular cavity against the near-field electromagnetic waves[J].Acta Physica Sinica,2013,62(11):234-242.
[14]周建军,林春生,胡叶青,等.用于磁探测的铁磁屏蔽体的形状与尺寸设计[J].磁性材料及器件,2012,43(4):49-53.ZHOU J J,LIN CH SH,HU Y Q,et al.Shape and size design of ferromagnetic shield for magnetic detection[J].Journal of Magnetic Materials and Devices,2012,43(4):49-53.
[15]孙伟民,刘双强,赵文辉.光学原子磁力仪[M].哈尔滨:哈尔滨工程大学出版社,2015.SUN W M,LIU SH Q,ZHAO W H.Optical Atomic Magnetometer[M].Harbin Engineering University Press,2015.
[16]张红,陈熙源,邹升.原子自旋磁强计磁屏蔽筒参数优化设计[J].东南大学学报(自然科学版),2014,44(6):1177-1180.ZHANG H,CHEN X Y,ZOU SH.Parameter optimization design of magnetic shielding cylinders for atomic spin magnetometer[J].Journal of Southeast University(Natural Science Edition),2014,44(6):1177-1180.
[17]贾智伟,符涛.基于三维发射线圈的肠道机器人无线供能系统[J].电子测量与仪器学报,2016,30(2):291-296.JIA ZH W,FU T.Wireless power transmission system of intestinal robot based on three-dimension transmitting coil[J].Journal of Electronic Measurement and Instrumentation,2016,30(2):291-296.