基于单片机的便携式心率测试仪的设计

本科学生毕业设计基于单片机的便携式心率测试仪的设计院部名称：专业班级：学生姓名：指导教师：职称：讲师黑龙江工程学院二○一二年六月TheGraduationDesignforBachelor'sDegreePortableHeartRateMeasuringInstrumentBasedonMCUCandidate：Specialty：Class：Supervisor：LecturerLiJingHeilongjiangInstituteofTechnology2012-06·Harbin黑龙江工程学院本科生毕业设计I摘要随着生物医学工程技术的发展,医学信号测量仪器日新月异。生物医学测量与临床医学和保健医疗的联系日益紧密。通过对人体各种生理信号的检测，能更好的认识人体的生命现象。脉象包含丰富的人体健康状况信息,脉诊技术应客观化、定量化。本设计利用光电式传感器,设计脉搏信号获取的方法。本设计主要是基于单片机的便携式脉搏测试仪的具体实现方法，利用光电传感器产生脉冲信号，经过放大整形后，输入单片机内进行相应的控制，从而测量出一分钟内的脉搏跳动次数，快捷方便。通过观测脉搏信号，可以对人体的健康进行检查，通常被用于保健中心和医院。本设计所设计的基于单片机的便携式心率测试仪对推进脉诊技术客观化的实现具有积极的促进作用。关键词：脉搏；单片机；光电传感器；脉冲信号；便携式黑龙江工程学院本科生毕业设计IIABSTRACTWiththedevelopmentofthebiomedicalengineeringtechnology,themedicalsignalmeasuringinstrumentischangingeveryday.Biomedicalmeasurementandclinicalmedicineandhealthcareincreasinglycloseties.Wecouldbetterunderstandthephenomenonofhuman.lifethroughvariousphysiologicalsignaldetectionofthehumanbody.Pulseinclusionsrichstateofthehealthinformation,Byusingopticalsensors,Withthehighdevelopmentofelectronicsandcomputernowadays,thepulsediagnosingtechnologyshouldbeobjectiveandquantitive.thistextaccesstothepulsesignaldesignmethods.Thispapermainlyintroducestheconcreterealizationmethodfordigitalpulsecounter,whichusesphotoelectricsensorstogeneratepulsesignal.ThepulsesignalisamplifiedandregeneratedtoinputintoMCUtocarryoutcorrespondingcontrol,asaresultthepulsenumberperaminuteismeasured.Theuseofthepulsecounterisquickandconvenient.Throughobservingthepulsesignal,humanhealthcanbeinspected,itisusuallyusedinhealthcarecentersandthehospitals.Inmydesign,PortableheartratemeasuringinstrumentbasedonMCUhasapositiveroleinpromotingtheobjectiveofthepulsetechnology.Keywords:Pulse；MCU；PhotoelectricSensor；PulseSignal；Portable黑龙江工程学院本科生毕业设计目录摘要.........................................................................................................................................IAbstract.................................................................................................................................II第1章引言.......................................................................................................................11.1概述.........................................................................................................................11.2基于单片机的心率测试仪的发展与应用.............................................................21.3本设计的主要内容.................................................................................................3第2章整体方案分析.....................................................................................................42.1任务.........................................................................................................................42.2要求.........................................................................................................................42.3系统的整体方案.....................................................................................................42.4方案的对比和论证.................................................................................................42.4.1脉搏检测传感器的选择.................................................................................42.4.2单片机的选择................................................................................................62.4.3显示部分的选择............................................................................................62.5设计时要考虑的问题.............................................................................................72.5.1环境光对脉搏传感器测量的影响................................................................72.5.2电磁干扰对脉搏传感器的影响....................................................................72.5.3测量过程中运动噪声的影响........................................................................82.6本章小结.................................................................................................................8第3章硬件电路设计分析...........................................................................................93.1控制器.....................................................................................................................93.1.1AT89S52..........................................................................................................93.1.2AT89S52的特点.............................................................................................93.1.3AT89S52的结构.............................................................................................93.2脉搏信号采集.......................................................................................................123.2.1光电传感器的结构及原理..........................................................................123.2.2信号采集电路..............................................................................................133.3信号放大电路.......................................................................................................14黑龙江工程学院本科生毕业设计3.4波形整形电路........................................................................................................153.5单片机处理电路........................................