单片机多生理参数监护仪的设计终稿.doc

毕业设计说明书题 目： 学 院： 专 业： 机械设计制造及其自动化 学 号： 姓 名： 指导教师： 完成日期： 目 录中文摘要·····································································································1ABSTRACT································································································2第一章 绪论·······························································································11.1 各生信号的意义··················································································11.1.1 心电图······················································································11.1.2 血压·························································································21.1.3 脉率·························································································31.1.4 脉搏血氧饱和度·········································································41.2 生理参数监护技术的发展·····································································51.2.1 心电监护仪器的发展···································································51.2.2 无创血压测量技术的发展·····························································51.2.3 脉搏血氧饱和度测量技术的发展···················································71.2.4 多生理信号监护仪的发展·····························································81.3 本课题的设计内容及意义······································································9第二章 生理参数检测电路········································································102.1 心电信号检测····················································································102.2 血压信号检测····················································································122.3 脉搏血氧信号检测··············································································152.3.1 脉搏SO2测量的基本原理···························································152.3.2 脉搏血氧信号检测电路······························································192.4 基于ADµC84×的高分辨率检测电路····················································242.4.1 过采样技术提高系统信噪比························································252.4.2 量化噪声成形技术提高系统信噪比··············································252.4.3 数字抽取滤波···········································································26第三章 四生理参数的处理········································································283.1 平滑滤波在心电模块中的应用······························································283.2 数学形态滤波在血压模块中的应用·······················································283.2.1 数学形态滤波的原理、定义及作用···············································293.2.2 数学形态滤波算法的应用···························································303.3 血压模块中的测定算法·······································································303.3.1 平均压的确定算法·····································································303.3.2 收缩压和舒张压的确定算法························································323.3.3 脉率的计算··············································································34第四章 系统硬件设计················································································354.1 系统总体设计····················································································354.2 系统硬件设计····················································································364.2.1 核心微处理器ADµC84×····························································364.2.2 液晶LCD模块··········································································374.2.3 按键························································································404.2.4 单片机接口···············································································41第五章 系统软件设计················································································425.1 系统软件整体结构··············································································425.2 硬件程序驱动程序··············································································435.2.1 液晶LCD驱动程序····································································435.2.2 按键驱动程序············································································445.3 主控模块及功能模块···········································································445.3.1 主控程序··················································································445.3.2 脉搏血氧模块程序设计·······························································445.3.3 心电采集模块············································································465.3.4 主控模块与血压测量模块的I2C通讯············································46第六章 课题总结与展望············································································50致谢············································································································51参考文献·····································································································52英文技术资料及中文翻译··················。