通信系统在强电磁脉冲环境下的电磁防护

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.,610054;2.,510656):,,:;;;:O441:A:1672-9242(2008)03-0076-05:2008-01-16:(41001020207):(1980-),,,,ProtectionofCommunicationSysteminStrongElectromagneticPulseYANKe2wen1,RUANCheng2li1,WUDuo2long2(1.UniversityofElectronicScienceandTechnologyofChina,Chengdu610054,China;2.GuangzhouHaigeCommunicationsIndustryGroupCo.Ltd,Guangzhou510656,China)Abstract:Thedistributionoffielddensityinspaceaboveearthsurfaceunderradiationofstrongelectromagneticpulsewasana2lyzedtheoretically.Theinternalfielddensitycouplingofacommunicationmainmachineunderstrongelectromagneticpulseradiationwassimulated.Thethresholdvaluesofcommonelectroniccomponentsunderelectromagneticpulsewereintroduced.Protectionmeas2uresofcommunicationsysteminstrongelectromagneticpulseenvironmentwereputforward.Keywords:communicationsystem;electromagneticpulse;coupling;protection,,,,,,,,,1,,1,,:Er=67©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(EMP),[1]:Ei=(Eii+Eii(1)Ei=E0cos,Ei=E0sin(2):ii;,=0,=90()ejwth:Ex(h,z)=Eie-jkzcoscos(1+Re-jk2hsin)cos(3)Ez(h,z)=Eie-jkzcoscos(1-Re-jk2hsin)sincos(4)Eie-jkzcoscos+jk(x-h)sin,R,:R=r(1+g/j)sin-[r(1+g/j)-cos2]1/2r(1+g/j)sin+[r(1+g/j)-cos2]1/2(5),h:Ex(h,z)=0Ez(h,z)=Eisin(1+Re-j2khsin)e-jkzcoscos(6)Eie-jkzcoscos+jk(x-h)sin,R,:R=sin-[r(1+g/j)-cos2]1/2sin+[r(1+g/j)-cos2]1/2(7)x=h,z=0,g,r,=0r,k=00()RR01(g),R=-1,R=1,,[2]=90,=0,EMPh=0.015m10m,FREMP()2400A,UWB()150A,1000A,,/10m2CST,,,,,2Fig.2Modelofthemainmachine2(:mm):400180440,380160420,10,1006010,70410,5,1077©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:Ei(t)=E0cos(2ft)exp-(t-t0)2tc(8):f,f=2GHz;E0=1.0105V/m;t0=1.510-9s;tc=5.010-19s23,3Fig.3Thewaveformofincidentpulseintimedomain4,1(0,30,210),10mm3(-115,30,210),3,10mm(0,30,0)(-115,30,0),4,,,,,,;,,,,,;,4Fig.4Thewaveformofeveryinteriorpointirradiatedbyelectromagneticpulseintimedomain,,55,,0.73043GHz3.2GHz,,87©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()-10210102101024,4.1,,,(),,4.2,,,,,,,,,,97©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(TVS)(MOV)PTC(CSSPD)[3],,,,,[4]4.3,,,,,,,,[5],,,,,[6],,,,,;,,,,()4.4,,,PCB,,,,,5,:,,,[7]:[1][M].,,.:,1988:40-50.(91)08©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.)BDAR,BDAR,,,,:[1],.BDAR[J].,1995,12(7):31-34.[2],,,.[M].:,2007:12-13.[3]GJB/Z20437-97,[S].(80)[2],,.[M].:,2003:93-99.[3].[J].,2002,30(5):55-60.[4]SATISHKumarTyagi.DevelopmentofLineFilterforEMPApplications[C]//1997ProceedingsoftheInterri2ationalConferenceonElectromagneticInterferenceandCompatibility.1997:415-419.[5],,.[J].,2006,28(4):34-38.[6],,.[J].,2004,16(11):1441-1444.[7].[J].,2005,27(3):95-100.(85)COD120mg/L,118.56mg/L,20.1mg/L,,,,,5h3.4(),6.0g/L(2.0g/L)1h,COD,7()7Table7Theactivesludgeandphotocatalyticmethodunderdif2ferentfluorescencewastewaterconcentrationCOD(912)C/(mgL-1)/%(631)C/(mgL-1)/%COD(182)C/(mgL-1)/%(126)C/(mgL-1)/%164.16821008491.25024.580145.928493.485.2118.563526.878,COD,,,TiO2,,,:[1],,.[J].,2002,21(1):1-4.[2],,,.22[J].,2002,19(6):755-757.[3].[M].:,2002.[4].[M].:.2004.[5]KHALILLB,ROPHAELMW,MOURADWE.TheRemovaloftheToxicHg(II)SaltsfromWaterbyPhoto2catalysis[J].AppliedCatalysisBEnviromental,2002,36:125-130.19