新型低压电力线载波通信模块的开发及应用

上海交通大学硕士学位论文新型低压电力线载波通信模块的开发及应用姓名：黄怿申请学位级别：硕士专业：电子与通信工程指导教师：朱杰;孙建文20090501I8051CIP-51C8051F300MC336112FSKOFDMSystemView2FSKOFDM2MCUC8051F30025MIPSFSKMC3361DSPPCBII3ABSTRACTIIITHERESEARCHANDAPPLICATIONOFNEWPLCCOMMUNICATIONMODULEBASEDONLOWVOLTAGEABSTRACTPowerlineCarrierCommunicationonlowvoltagemakesuseofthepowernetworktotransmitdataandexchangeinformation.Ithasremarkableadvantagesthatneednonewwire,tocoverthescopebroadlyandconnectionconvenience,appliedinthedevelopmentofAutomaticmeterreading(AMR)system.CarrierCommunicationmodulesupposedinthisthesisisthecorechipinautomaticmeterreadingsystem.Includeofhigh-speedpipelined8051-compatiblemicrocontrollercore,narrowbandFMMC3361,peripheralcircuitandinterfacemodule,itisindependentlydeveloppedbyourselveswithfullintellectualproperty.Themaincontentandworkinthisthesisareasfollow:(1)ThemaincarrierchipsinrecentAMRsystemarediscussedindetail.Thetransmissioncharacteristicofthepowerlinecarriercommunicationchannelisanalyzed;theadvantagesanddisadvantagesofmodulatetechnologiesarecompared.Thebasicprinciples,performances,characteristicsandkeytechnologiesof2FSKandOFDMarestressed,andthesesystemsaresimulatedwithSystemViewsoftware.(2)Basedonnarrowbandfrequencydivisionmodulatedtheory,thesoftwarefrequencydivisionmethodissupposedinthethesiswiththeintegratedmixed-signalsystem-on-a-chipMCUC8051F300.Withhighspeedperformance(upto25MIPS),thissoftwareiscompiledtodividefrequency,andproducethehighfrequency,lowfrequency,andMC3361localoscillatingsignalinFSKmodulation.Referredtotheprincipleoftheintermediatefrequencytransformer,dual-loopresonantcircuitofinputsignalisconstructedtoselectfrequency.Andtheenhanced,demodulated,reshapedcircuitsofinputsignalaredesigned.TheDSPABSTRACTIValgorithmisadvanced,andthedigitalsamplingsoftwareiscompliedtorestorethereceivedsignal.Inordertoputdownelectromagneticinterference,somemeasuresareappliedtoimprovethestabilityinPCBlayout-designs,suchastheshortenwire,andtheaddeddecouplingfilterinpowersupply.3Themoduleistested,aftersimulatingthecompliedsoftwaresonline.Basedonthetestingprincipleofcarriercommunicationmodule,testingframeworkisconstructed.Andtestingsoftwareofcarriercommunicationmoduleiscomplied,andsometechniqueindexesareobtained.Coordinatedtotheouterpowersupplyandtheelectricallevelconvertingcircuit,theintellectivefunctionsofmodulatoranddemodulatorarerealized.Andtheyareappliedintheproduceregionandlocaltesting.Keywords:powerlinecarriercommunicationonlowvoltagefrequencyshiftkeying,orthogonalfrequencydivisionmultiplexing,modem53AFCAutomaticFrequencyControlALCAutomaticLevelControlAMRAutomaticMeterReadingASKAmplitudeShiftKeyingAWGNAdditiveWhiteGaussianNoiseBPFBandPassFilterCPCyclePrefixCSMA/CACarrierSenseMultipleAccesswithCollisionAvoidanceDFTDiscreteFourierTestDSPDigitalSignalProcessingEMIElectro-MagneticInterferenceFMFrequencyModulationFSKFrequencyShiftKeyingIDFTInverseDiscreteFourierTransformIFFT/FFTInverseFastFourierTransform/FastFourierTransform/ISIInterSymbolInterferenceLPFLow-PassFilterMACMediaAccessControlMCUMicroprogrammedControlUnitMLMaximumLikelihoodOFDMOrthogonalFrequencyDivisionMultiplexingPAPRPeak-to-AveragePowerRatioPCBPrintedCircuitBoardPLCPower-LineCarrierPSKPhaseShiftKeyingRAMRandomAccessMemorySFRSpecialFunctionRegisterSMTSurfaceMountTechnologySoCSystem-on-ChipSSSpreadSpectrum1380/220V[1]380/220V1.1″″(NONEWWIRE),A[2],PC:,,,,2,1.2ModemModemModemModemModemNationalSemiconductorLM1893[3]FSK4800bps10mV40dBModemST7538STModem[4]ModemModemSTST7536ST7537ST7538ST7538FSKModemAFC()ALC()84800bpsST75383PL3105DPSK500/250bps[5]SoC/PL2000PL31050.35mCMOS//8/1650216A/DLED/LCD32PL310516KE2PROM1KSRAM256SRAM250/500bps4PLT-22EchelonBPSK[6]PLT-22PLT-22Lonworks5INT5200IntellonPLCMAC/PHYAFE[6]PowerpacketOFDM84DBPSK/DQPSK14MbpsMAC/CSMA/CA56PLC1Km100m1.34OFDM,12FSKSystemView2FSK2OFDMOFDMPLCSystemView3452.12.1.1220V20dBkHz40100dB/Km220V/380V500KHz20dB()2.1.262-12log10=RSGVVD2-1PLC20dB55dBCENELECEN50065-1A3.0kHz-148.5kHzFCC100kHz-450kHz2-12-1500m250m250m750m50dB20dB25dB30dB2.1.3PLC()[7][8][9][10]52-2(ColoredBackgroundNoise)7(NarrowBandNoise)2-1Fig.2-1TheClassificationofNoise(PeriodicImpulsiveNoise,AsynchronoustotheMainsFrequency)50Hz-200Hz(PeriodicImpulsiveNoise,SynchronoustotheMainsFrequency)(ImpulsiveNoise)82.2ASKFSKPSKSSOFDM2.2.1(FSKFrequencyShiftKeying)FSK181FSK(2FSK)10()++=1)2cos(02cos)(21nnfAtfAtsθπϕπ2-21f2fnϕnθn2-2012-2TbR300bit/s600bit/s1200bit/sTf1=bR901000110T2T3T4T5T6T7Ttd(t)2-2()tdFig.2-2TheInputBasebandSignal()td0t2FSKs(t)1f1f1f1f2f2f2fA-A2-32FSKFigure2-32FSKSignalofContinuousPhase2-32-22FSK1f2f012FSKnϕnθ2-22FSK2ASK2FSKFSKFSKFSK2.2.2PSKPhaseShiftKeying)10PSK“0”“10π()()tnTtgatscnsnωcos∑−=2-3−−=P11P1nacωPSK1.()2.180PSKPSK“”“”PSKFSK2.2.3(SSSpreadSpectrum)(SpreadSpectrumCommunication)(PN)PNPN11PseudoNoiseSequencePNmGoldM(PRN)[18](Chirp-SS)2.2.4(OFDMOrthogonalFrequencyDivisionMultiplexing)[22]WLANOFDMIFFT/FFTOFDMDSPOFDM2.3FSKFSKFSKPLC12PLC2.3.12FSK(l)FSK(2)(3)2FSK2-42FSK2ASKLPF0101f0BPFBPF2FSK1f2f2-42FSKFig.2-4TheBlockDiagramof2FSKSignalBasedonIncoherentDetection2.3.22FSK