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1、摘要摘要本文介绍了一种由AT89C51单片机构成的医院输液监控系统。对系统如何实现自动检测、自动报警等功能也做了详细的分析与研究。本系统利用光电传感器采集点滴的有无，AT89C51作为中央处理器进行信号分析与处理，结合输液传感器、小型步进电动机、LCM103液晶显示、键盘等组成的智能监控输液系统，实现了输液过程的自动监控。信号传感方式采用了发光二极管和三极管。自行设计出适用于多种输液滴速监控器，给出了各个功能模块的逻辑框图。然后，就此系统的核心传感器的设计进行了详细的介绍，系统地分析了传感器的物理特性与信号检测的关系，并结合实际需要设计出满足后期信号处理的适用于
2、多种输液液体的传感器。当点滴的速度低于或高于设定值时，单片机发出控制信号，进行相应调节。当有人按下报警按钮时，与单片机相连I/O口输出高电平，也触发蜂鸣器报警，提醒医护人员和输液病人采取相应措施，避免事故发生。整个装置的线路简单，制作方便，经济实用.关键词：输液滴速；传感器；信号处理；液位检测等AbstractAbstractThisarticleintroducedonekindthehospitalinfusionsupervisorysystemwhichconstitutesbyat89C51monolithicintegratedcircuit.Rea
3、lizedfunctionsandsoonautomaticdetection,auto-alarmhowtothesystemhasalsomadethedetailedanalysisandtheresearch.Thissystemuseelectro-opticalsensorgatheringintravenousdripwhetherthereis,didAT89C51takethecentralprocessorclearsignalanalysisandprocessing,theunioninfusionsensor,smallstep-by-
4、stepscompositionandsoonelectricmotor,LCM103liquidcrystaldisplay,keyboardintelligentmonitoringinfusionsystems,hasrealizedtheinfusionprocessautomaticmonitoring.Thesignalsensingwayhasusedthelightemitterdiodeandthetriode.Independentlydesignsissuitablemanykindsofforlosesthebubblefastmonit
5、or,hasgiveneachfunctionmodulefunctionalblockdiagram.Then,thesystemcoresensordesignhascarriedonthedetailedintroductioninlightofthis,hasanalyzedthesensorphysicalpropertyandthesignalexaminationrelationssystematically,andunifiestheactualneedtodesignsatisfiesthelaterperiodsignalprocessing
6、beingsuitablemanykindsofinfusionliquidsensor.Whentheintravenousdripspeedislowerthanorishigherthanthesettingvalue,themonolithicintegratedcircuitsendsoutthecontrolsignal,carriesonthecorrespondingadjustment.Whensomepeoplepressdownreportstothepolicethebutton,withthemonolithicintegratedci
7、rcuitconnectedI/Omouthoutputsthehighlevel,alsotriggersthebuzzertoreporttothepolice,theremindermedicalcarepersonnelandtheinfusionpatienttakesthecorrespondingmeasure,avoidstheaccidentoccurring.Theentireinstallmentlineissimple,themanufactureisconvenient,theeconomyispractical.Keywords:dr
8、opspeed;sens
