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1、河南理工大学毕业设计（论文）说明书PresentedinthispaperisadesignofpulsemeasuringinstrumentbasedonMCU,asthecircuitmoduleplaysanimportantroleinthesystem,suchasheartrateacquisitioncircuit,displaycircuitandSTC89C52microcontrollerthroughtheserialporttorealizetheconnection.ThisdesignwithSTC89C52microcontrol
2、lerasthecentralcontrolunit,throughST188asinfraredphotoelectricsensortocollectthepulsesignal,afterthelm358foropamp;againthroughbeforeandafterfiltering,magnifying,shaping,andgetstablesignal;functionstoachievetherapiddetectionofheart.Youcanalsothroughthebuttontosetthepulsevaluescope;buz
3、zerdrivermoduleIntherangebeyondthescopeofthealarmprompt,themeasurementresultsintheliquidcrystaldisplay.Experimentalresultsshowthatthetestresultsofthedesignandpracticalrequirementsarebasicallythesame,STC89C52MCUstronganti-interferenceabilityandLCD1602displaycontroltheadvantagesofmorec
4、onvenientsothatthesefeaturescanbesuccessfullycompleted.Theproductioncostlessthan100yuan,withlowprice,easymanipulation,lowpowerconsumption,highreliability,veryapplicabletofamiliesandindividuals.Heartrate)inprofessionaltermsisusedtodescribethehumanheartbeatcycle.PulseofmodernChinesewil
5、lbeinterpretedas"heartbeatingfrequencyvalue;sotheheartratecanalsosaidinaunitoftime,heartrhythmspeed.Everyone'sheartratesignalsmostlycontainsrichphysiologicalandpsychologicalinformation.Thisisduetothehealthofinternalorgansofthebodycanreflectinthepulseinformation.Thisdiscoveryhasgradua
6、llyattractedtheattentionofmanyclinicians.Inourcountry,pulsediagnosishasbeenregardedastheessenceofChinesemedicine;sofartheclinicalpracticehasabout2600years.Howeverduetotheuseoffingersoftentherewillbesomesweatglandsreferstopulsediagnosisinthepresenceoferrorscannotbeignored;andleadstoin
7、accuratemeasurement.Thenperhapsyouwouldsayandtheearveinmeasurement,insteadofthepreviousisoftenused.Althoughbymeasuringearripplecometopulsesignalrelativelycomparison9河南理工大学毕业设计（论文）说明书Clean,butbecausetheearpulsesignalisweak,especiallywhentheseasonalchanges,themeasurementsignalisvulnera
8、bletotheinfl
