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ID:33337604
大小:1.56 MB
页数:52页
时间:2019-02-24
《x线管旋转阳极控制电路的设计与实现》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中文摘要该控制电路前期通过了仿真测试,信号低频漂移输出通过改善信号传输条件和采用屏蔽驱动、浮地跟踪等电路技术加以消除和处理。后期经多次试验、测试后证明各项功能相对完善,运行安全性和可靠性好。本课题首次提出在x线管旋转阳极控制电路中采用逆变电源控制,应用单片机管理,不仅能调用x线管参数控制其旋转阳极电路,而且实现了与X线机主机系统实时通信,更好地控制X线的输出。关键词:智能化,X线管,旋转阳极控制,逆变电源,单片机Ⅱ硕士学位论文DesignandImplementationofControlCircuitforM
2、edicalRotatingAnodeX-rayTubeABSTRACTSinceRoentgendiscoveredtheX·rayin1895andfirstuseditinclinicaldiagnosis,thedevelopmentofmedicinehascomeintoanewera.Duringthepast100years,thex-rayequipmenthasgonethroughtheperiodsofelectrontube,integrationcircuitandcomputer,
3、andnow,itcomesintodigitalnetworkera,inwhichtraditionalX·rayequipmentsarebeingreplacedbyCRandDR.Aswell,thetechnologyofX—rayequipmentisgettingprogressesfrompowerfrequency(50Hz)tointermediatefrequency(400-20kHz)andhighfrequency(30kHz).FuturedevelopmentofX-rayeq
4、uipmentismainlyaboutthefollowingthreeaspects:1.ImprovingX-rayimage;2.DiminishingX·rayexposuretodoctorsandpatients;3.Automatingtheoperationanddiagnosis.Thepurposeofthisresearchistodesignanintelligentcontrolcircuitoftherotatinganodewhichautomaticallyadjustsand
5、outputspowerparametersandtoapplyittoallkindsofX-raytubes.Theprinciplesofthedesignareintellectualization,lowpowerandlowcost.Consideringsinglechipcomputerisusedasthecontrolcore,theoutputpowerisvariouswiththeconductionfrequencyoftheinverter.Thecontrolcircuitisc
6、omposedofsixfunctionalmodules:inputmodule,centralcontrolmodule,invertermodule,drivemodule,alarmmoduleandpowermodule.Asthecontrolcore,thecentralcontrolmoduleincludes89C51singlechipcomputer,andiscapableofmasteringoperatingconditionsofanothermodulesbyreceivingi
7、nstructionsfromthemandcontrollingthembysentinginstructions,makingthesystemanorganicwhole.Thecircuithasbeenimplementedvariouspreliminarysimulationtests,signallowfrequencydrifthasbeeneliminatedbysignalconductionmelioration,shieldguardandfloatinggroundtrackingt
8、echniques.Laterexperimentsandtestshaveprovedthatthiscircuitissafeandreliable.Therotatinganodecontrolcircuitemployingpowerinvertercontrolandsingle-·chip··microcomputermanagementnotonlycallsthepar
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