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1、河南理工大学毕业设计(论文)说明书PresentedinthispaperisadesignofpulsemeasuringinstrumentbasedonMCU,asthecircuitmoduleplaysanimportantroleinthesystem,suchasheartrateacquisitioncircuit,displaycircuitandSTC89C52microcontrollerthroughtheserialporttorealizetheconnection.ThisdesignwithST
2、C89C52microcontrollerasthecentralcontrolunit,throughST188asinfraredphotoelectricsensortocollectthepulsesignal,afterthelm358foropamp;againthroughbeforeandafterfiltering,magnifying,shaping,andgetstablesignal;functionstoachievetherapiddetectionofheart.Youcanalsothrough
3、thebuttontosetthepulsevaluescope;buzzerdrivermoduleIntherangebeyondthescopeofthealarmprompt,themeasurementresultsintheliquidcrystaldisplay.Experimentalresultsshowthatthetestresultsofthedesignandpracticalrequirementsarebasicallythesame,STC89C52MCUstronganti-interfere
4、nceabilityandLCD1602displaycontroltheadvantagesofmoreconvenientsothatthesefeaturescanbesuccessfullycompleted.Theproductioncostlessthan100yuan,withlowprice,easymanipulation,lowpowerconsumption,highreliability,veryapplicabletofamiliesandindividuals.Heartrate)inprofess
5、ionaltermsisusedtodescribethehumanheartbeatcycle.PulseofmodernChinesewillbeinterpretedas"heartbeatingfrequencyvalue;sotheheartratecanalsosaidinaunitoftime,heartrhythmspeed.Everyone'sheartratesignalsmostlycontainsrichphysiologicalandpsychologicalinformation.Thisisdue
6、tothehealthofinternalorgansofthebodycanreflectinthepulseinformation.Thisdiscoveryhasgraduallyattractedtheattentionofmanyclinicians.Inourcountry,pulsediagnosishasbeenregardedastheessenceofChinesemedicine;sofartheclinicalpracticehasabout2600years.Howeverduetotheuseoff
7、ingersoftentherewillbesomesweatglandsreferstopulsediagnosisinthepresenceoferrorscannotbeignored;andleadstoinaccuratemeasurement.Thenperhapsyouwouldsayandtheearveinmeasurement,insteadofthepreviousisoftenused.Althoughbymeasuringearripplecometopulsesignalrelativelycomp
8、arisonClean,butbecausetheearpulsesignalisweak,especiallywhentheseasonalchanges,9河南理工大学毕业设计(论文)说明书themeasurementsignalisvulnerabletotheinfl