毕业设计(血压计)

北京航空航天大学毕业设计(论文)第页本人声明我声明，本论文及其研究工作是由本人在导师指导下独立完成的，在完成论文时所利用的一切资料均已在参考文献中列出。作者：刘桂良签字：时间：2008年6月北京航空航天大学毕业设计(论文)第I页基于S12单片机的血压计的实现学生：刘桂良指导老师：张军香董韶鹏摘要人体血压是人重要的生命参数之一，目前人体血压的测量多采用间接测量，测量方法主要有示波法、柯氏音法等。其中示波法因其测量方便、抗干扰能力强等优点被当前主流的自动电子血压计所采用。本文主要研究使用S12单片机实现人体血压的测量，测量方法为示波法。本论文研究的主要内容有：对人体血压的测量系统进行详细的分析，对血压测量实验系统进行改进，统一实验箱与单片机的接口；编写单片机程序，完成对人体血压测量的控制与血压值的计算；实现单片机与上位机的通信，上位机软件对血压数据进行图形显示，编写软件计算血压值。同时，本论文开发的实验系统为压力测量与算法的学生实验提供了一个良好的实验平台。在血压测量算法的研究和实现测量系统的基础上，设计实验，编写实验指导书，学生可以根据实验指导书，完成对人体血压的测量，学习并掌握Freescale单片机的原理及应用方法，培养学生的学习和动手的能力。关键词：单片机，示波法，LabVIEW北京航空航天大学毕业设计(论文)第II页BloodPressureMonitorBasedonS12MCUAuthor:LiuGuiliangTutor:ZhangJunxiang,DongShaopengAbstractHumanbloodpressureisoneofperson'smostimportantlifeparameters,itsmeasuringtechniquevariesandmainlyindirectly,amongwhichOscillometricandKeshi-Lawincluded.Thisarticlemainlydealswiththeoscillometricmethodwhichisgenerallyusedintheautomaticbloodpressuremonitordesignsforitsconvenienceandstronganti-disturbancecapacity.Thepapercarriesonthedetailedanalysistothehumanbodybloodpressure'smeasurementsystem,theimprovementtotheoriginalexperimentsystemandtheunifiedmonolithicintegratedcircuitseriesexperiment'sconnection.Itresearchesmoreonthecontrolofthemeasurementsystemandthecalculationofbloodpressure.Alsointhispaper,asoftwareisusedtofinishthecommunicationbetweenthemeasurementsystemandthecomputeronwhichthemeasuredataisdisplayedgraphicallyandthebloodpressureiscalculatedtoo.ThedevelopmentoftheS12MCUbloodpressuremeasurementsystemprovidesaniceexperimentsplatformforstudents.Usingtheexperimentguidebook,studentscanaccomplishthehumanbloodpressuremeasurement,mastertheapplicationmethodoftheFreescalemicrocontrollers.Theexperimentcanfostertheirabilitytostudyandwork.Keywords:Microcontrollers,Oscillometric,LabVIEW北京航空航天大学毕业设计(论文)第III页目录1绪论.........................................................................................................................................11.1论文选题意义..................................................................................................................11.2国内外研究现状分析......................................................................................................11.2.1血压及血压测量方法...............................................................................................11.2.2示波法血压测量基本原理......................................................................................31.3最新成果和发展动态......................................................................................................41.4论文构成及研究方案......................................................................................................41.4.1研究目标...................................................................................................................41.4.2研究内容...................................................................................................................51.4.3研究方法..................................................................................................................52系统总体设计.........................................................................................................................72.1血压测量系统..................................................................................................................72.1.1系统组成..................................................................................................................72.1.2工作原理..................................................................................................................72.2血压测量算法研究..........................................................................................................82.2.1提取脉搏波包络曲线...............................................................................................82.2.2血压值计算............................................................................................................10本章小结..............................................................................................................................113硬件设计...............................................................................................................................123.1硬件设计概述................................................................................................................12北京航空航天大学毕业设计(论文)第IV页3.1.1血压测量实验箱....................................................................................................123.1.2单片机系统............................................................................................................133.2血压测量电路模块分析................................................................................................133.2.1气阀、气泵控制电路.............................................................................................133.2.2气袖压力测量电路................................................................................................143.2.3脉搏波提取电路....................................................................................................153.2.4电源及整流电路........................................................................