论文摘要在线翻译急急急！！！

Asaresultofautomaticity'senhancement,eachproductionlinkcommoncontrolortheexamination,themeteringequipmentwithwasmeasuredthattheobjectthedistanceisfar,theenvironmentalconditionismorecomplex.Wasmeasuredspeciallythatthesignalisweakmoreoverisburiesdeeplyinthenoise,howtocarryontheexaminationtotheweaksignaltobevaluedpeople'smoreandmore.Theweaksignaldetectionisanemergingtechnicaldiscipline,theapplicationscopespreadsdomainsandsoonlight,electricity,magnetism,sound,heat,biology,mechanics,geology,environmentalprotection,medicine,laser,material.Itsinstrumenthasbecomeinthemodernscienceresearchtheessentialequipment.Theweaksignaldetection'sgoaliswithdrawsthewantedsignalfromthenoise,orenhancestheexaminationsystemoutputsignalwithsomenewtechnologiesandthenewmethodthelettertobehot-temperedtheratio.thisarticleproposedthatusestheMAX038functiongeneratortoproducethesynchronizedorthogonalsupplyoscillator,usesthedoubledifferencesubtractertorealizetheimpedancetothevoltagetransformation,andrealizestheelectricconductancepeak-to-peakvalueandthephaseexaminationusingthedouble-phaselock-inamplifier,realizeswhentheelectrophoresischipcapacitivecouplingnon-contactelectricconductancefrequencyrangeanalysis.Inrecentyearsthecapacitivecouplingnon-contactelectricconductanceexamination(C4D)isonekindofnewelectricconductanceexaminationtechnologywhichappears,itsthoroughsettlementcontactelectricconductanceexaminationexistence'sexaminationelectrodeeasytohavepolluted,wasmeasuredquestionsandsoonsystemhighfieldintensityvoltagedisturbance,alreadysucceededtheapplicationinthecapillaryvesselelectrophoresisexamination,hasthewidespreadapplicationpotential.Intheweaksignaldetection,thenoiseistheharassmentsignalwhichonekinddidnothope,theformidableanti-noiseabilitywhichthelock-inamplifierhasenablesthisquestiontobeabletoobtaintheverygoodsolution.Inordertoreducethenoisetothewantedsignalinfluence,oftenusesthenarrowbandpassfilterfiltrationbeltexternalnoise,enhancesthesignal-to-noiseratio,thelock-inamplifierisonekindusesthemutualcorrelationprincipledesignthesynchronizedcorrelationdetectioninstrument,itcanexaminetheinputsignal-to-noiseratiotoreach10weaksignals.CarriesonthesimulationwithMultisim2001,thissoftwarehasthesystemtointegrate,thecontactsurfacetobedirect-viewinghighly,thesimulationfunctioniscomplete,meritsandsoonusenimbleconvenience.