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1、洛阳理工学院毕业设计(论文)基于ARM的简易手持示波器的设计摘要[2]本设计是基于ARM(AdvanceRISCMachine)以ARM9为控制核心简易手持示波器的设计。包括前级电路处理,AD转换,波形处理,LCD显示灯模块。前级电路处理包括程控放大衰减器,极性转换电路,过零比较器组成,AD的转换速率最高为500KSPS,采用实时采样方式,设计中采用模块设计方法。充分使用了ProteusMultisim仿真工具,大大提高了设计效率,可测量输入频率范围为10HZ—60KHZ的波形,测量幅度范围为-3.3V—+3.3V,并实现波形的放大和缩小,实时显示输入信号波形,同时测量波
2、形输入信号的频率。总体来看,本文所设计的示波器,体积小,价格低廉,低功耗,方便携带,适用范围广泛,基本上满足了某些场合的需要,同时克服了传统示波器体积庞大[1]的缺点,减小成本,完全可以把本设计当做手持数字示波器。关键词:AD,ARM,实时采样,手持数字示波器I洛阳理工学院毕业设计(论文)ADesignofSimpleHandheldOscilloscopeBasedOnArmABSTRACT[2]ThedesignisbasedontheARM(AdvancedRISCMachine)withARM9asthecontrolcoreofsimplehandheldosc
3、illoscopedesign.Includesafrontstagecircuit,ADconversion,waveformprocessing,LCDdisplaylampmodule,Thefrontstagecircuitprocessingincludesprogrammableamplifierandattenuator,apolarityconversioncircuit,azerocrosscomparator,ADconversionrateupto500KSPS,real-timesampling,designadoptsmoduledesignme
4、thod,MakefulluseoftheProteus,Multisimsimulationtools,greatlyimprovingtheefficiencyofthedesign,canmeasureforinputfrequencyrangeof10HZ-60KHZwaveform,amplitudemeasurementrangeof-3.3v-+3.3v,andtherealizationofwaveformamplificationandnarrow,real-timedisplayoftheinputsignalwaveform,whilemeasuri
5、ngthewaveshapeofthefrequencyoftheinputsignal.Overall,theoscilloscopedesigned,smallvolume,lowprice,lowpowerconsumption,convenientcarrying,wideapplicationscope,basicallymeettheneedsofcertainapplications,whileovercomingthetraditionaloscilloscopebulkyshortcomings,[14]reducecost,canmakethedesi
6、gnasahand-helddigitaloscilloscopeKEYWORDS:AD,ARM,real-timesampling,handhelddigitalOscilloscopeII洛阳理工学院毕业设计(论文)目录前言..................................................................................................1第1章绪论.......................................................................
7、.................21.1课题背景.................................................................................21.2课题研究的目的和意义..........................................................21.3课题的主要研究工作..............................................................3第2章系统整体设计方案.