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1、第32卷第2期2009年4月 电 子 器 件Chinese Journal Of Electron Devices Vol.32No.2Apr.2009Design of Magnetic Field Distribution Measurement System XU Ya-xue,QIN Hui-bin,ZHEN Liang ,LI Fang-fang ,CHEN Xiao-ning ,SHAOLi-huan(Schoolof Electronics and Information, Hangzhou Dianzi University , Hangzhou 310018, China)A
2、bstract:A hardware structure andsoftware module design idea of magnetic fielddistribution measurementsystem isintroduced.The system uses single chipmicro-controller combining hallsensorsas predictiveda-ta acquisition system , sends acquired data to PC via serialport, and the PC analyzes, processes,
3、displaysand saves these data in LabVIEW environment.The system has been demonstrated to be convenient andflexible in measuring the magnetic field.The measurement range in each of three directions can reach-900Gauss to +900Gauss with a precision of 1%, and the result can be shown with 3D graphics.Key
4、 words:magnetic field measurement;magnetic filed distribution;3-D;data acquisition;LabVIEWEEACC:5100Hsd!9徐亚雪,秦会斌 ,郑梁,李方芳,陈晓宁,邵李焕(s0S/v0,s310018)l:2008-10-17:SE1S(60601022)Te:(1979-),o,s0S/v3,V,dCAE,VY0q!9#, xu ;U(1961-),3,pV,q,V3=,1VY0qFEMI/TK1:Hsdqq!9Z。d|ld,:.T-d,|1g.PCd。LabVIEW/s、)、AUii。k,d?ZL2H,
5、3Z_S(Vr-900 +900 Gauss,r1%,iOHT?YVmAU。1oM:H;Hs;LabVIEWms|:TN702 DSM:AcI|:1005-9490(2009)02-0382-04-,HHqR,HHqHs941p,YVHX?1p,HsT?m4VU 1-2 。M,S=HqHH/v,iO|T 3-7 。,iBK,B,5H.,NL;=,BZ_Hs,?Q$Hs?p。K,4:.PIC16F877F-d95,3B.HH3Z_sZE,9v?,!9Hsd。1d98Zd98mm1U。d13USMF。PIC16F877A,3:.|bv,|)YV1g.TB),qLabVIEWmI。3USMzF,$8
6、。3M0.05 mm,xyZ_S10 cm ,zZ_S3 cm,kE“Z”。图1系统总体框图2q!92.1:.UGN3503L:.,|H|。YV,3M.,90,m2U,73:qELsYX ,Y ,Z,5:.sYbWHX ,Y ,ZZ_s 8-9 。3./,qZE。图2三维传感器示意图2.2|bv|bve9mbv,LC1M,Hbv,V74A/D。ebvm3U,sNVbvAD620、E714CD4051EF。eCD40514tAD62018bvE。bv9m/TU。G =49.4KRGi+1(i|1、23)图3程控放大电路RG1 ,RG2 ,RG3sY451 k,5.1 k,1kE,LC1.96,1
7、0.68,50.40bv。2.3d4InZ,BF?;=N1,1=d1p,eq,。In,MicrochipPIC16F877A。dP=10 bitADC,VE|3|。ADCIP,E|YVERAg=M,TRC6(TXD)。2.4Yg/YVRS-2321gl?7。PC1gRS-232TTLB,#1F,MAX232,PICUSARTvs?l,RC6RC7M,VLCsY,Ygm4U。PVISAof1gYfLC/1gY,VISANISI/Og。图4通信接口电路2.5zd!X 、Y 、ZZ_S#W,YV1g|te?/,/vz。X 、Y 、Z 3Z_sYb3,X、YZ_XY,ZZ_。Bzm5U,z。3dq!9q!91(/)qq。383第2期 徐亚雪,秦会斌等:磁场分布测量系统的设计图5电机驱动电路3.1/q!9/mm6U。图6下位机主程序流程图/q!9H1i/35:InHMkY,dBSBnk。 .2i,dA/DHq3r