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，以红外光电传感器作为检测人体心率脉搏的元件，采集到的心率脉搏信号再传送到单片机电路进行处理，得出的数据在LCD12864显示出来。当系统运行时，LCD12864显示是当前人体的脉搏心率跳动次数、脉搏波形，测量结束后显示的是最后一次测量脉搏心率跳动次数和脉搏波形。再通过单片机采集脉搏信号，利用功能强大的虚拟仪器LabVIEW设计出脉搏的采集与分析系统。在单片机上实现了采集脉搏传感器的模拟信号，然后通过串口将数据传输到上位机进行处理与分析，实现远程监控的功能。实验结果表明，系统工作正常，测量灵敏度高，实现了设计功能。关键词：脉搏检测系统，STC15W408AS，红外光电传感器，串口，LabVIEWDesignofpulseratedetectionsystemBasedonLabVIEWAbstractThistopicforthisSTC15single-chipmicrocomputerasacontrolsystemforthecoreoftheheartratemeterdesign,withinfraredreceivingsensorasthedetectingelementofhumanpulseofheartrate,heartratewerecollectedpulsesignaltransmittoMCUcircuitforprocessing,thedatainLCD12864display.Whenthesystemisrunning,theLCD12864displayisthecurrentpulserateofthepulserateofthehumanbodyandthepulsewaveform.Afterthemeasurement,thepulserateofthepulserateandpulsepulsearemeasured.Bysingle-chipmicrocomputertocollectthepulsesignal,theuseofpowerfulLabVIEWvirtualinstrumentdesignpulseacquisitionandanalysissystem,onthesinglechipmicrocomputertorealizethecollectionoftheanalogsignalofthepulsesensorandthenthroughaserialporttotransmitdatatoPCforprocessingandanalysis,realizestheremotemonitoringfunction.Theexperimentalresultsshowthatthesystemworksnormally,themeasurementsensitivityishigh,andthedesignfunctionisrealized.Keywords:Pulsedetectionsystem,STC15W408AS,infraredemissionreceivingsensor,serialport,LabVIEW目录1引言........................................................................................................................................................11.1脉搏的研究背景与意义.................................................................................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................................................................................................................................53.1系统总框架.....................................................................................................53.2单片机模块.....................................................................................................63.2.1主芯片STC15W408AS介绍.....................................................................................63.2.2单片机最小系统模块...........................................................................................73.2.3电源电路...........................................................................................
