基于LabVIEW的脉搏检测系统设计摘要本课题以STC15单片机作为控制系统核心的心率测量仪的设计，先采用红外对管采集脉搏的信号，然后将LM328当做运放设计调理电路而处理所采集的信号，在其处理之后，将其送至单片机实施A/D采样与算法处理，其后在液晶屏上显示出脉率与脉搏波形。此外，应用LabVIEW进行上位机的设计而取得和MCU之间的通信。基本实现了对人体脉搏的测量，以及对脉搏波形的实时监控。此次脉率测量的设计方式较为简捷，并且具有精准的测试结果与整齐大方的显示界面，因此其发展前景是光明的关键词：脉搏检测系统，STC15W408AS，红外光电传感器，串口，LabVIEWAbstractThistopictoSTC15single-chipmicrocomputerascorecontrolsystemoftheheartratemeterdesign,byusinginfraredtubetopulsesignal,theamplificationfiltercircuitforfilterandamplificationprocessing,thepulsesignalsusingLM328asop-ampdesigncontrolcircuittorealizethecollectionofsignalprocessing,theprocessingofsignalintotheMCUA/Dsamplingandprocessingalgorithm,thefinalrealizationofpulsewaveformontheLCDpanelandpulsefrequencydisplay.Inaddition,LabVIEWisusedtodesigntheuppermachinetocommunicatewithMCU.Themeasurementofhumanpulseandthereal-timemonitoringofpulsewaveformarerealized.Thedesignmeasuringpulseratemethodissimple,thetestresultisaccurate,thedisplayinterfaceisfriendly,hastherelativelygooddevelopmentprospect.Keywords:Pulsedetectionsystem,STC15W408AS,infraredemissionreceivingsensor,serialport,LabVIEW目录1引言...............................................................................................................................................11.1脉搏的研究背景..............................................................................................11.2选题意义..........................................................................................................12系统设计方案............................................................................................................................12.1实现的要求和功能..........................................................................................12.2采集主控芯片方案.........................................................................................22.3脉搏传感器的选择..........................................................................................22.4上位机实现方案..............................................................................................43硬件电路设计............................................................................................................................43.1系统总框架....................................................................................................43.2单片机模块......................................................................................................53.2.1主芯片STC15W408AS介绍............................................................................53.2.2单片机最小系统模块...................................................................................63.2.3电源电路...........................................................................................................63.2.4复位电路...........................................................................................................73.3脉搏信号的采集...........................................................................................................73.4脉搏信号的处理.....................................................................................
