电子血压测量计设计和实现 机械制造专业

[键入文字] 论文题目：电子血压测量计设计 目 录摘要...................................................................ⅠABSTRACT...............................................................Ⅰ第一章 绪论.............................................................11.1 设计目的及意义.......................................................11.1.1 设计研究的意义....................................................11.1.2 设计研究的总体目标................................................2第二章设计的总体思路和基本方法..........................................42.1 系统硬件的总体设计...................................................42.2 微弱信号的检测方法..................................................62.3 采集系统基本组成....................................................82.4 采样方式的选择.....................................................10第三章 硬件系统设计....................................................123.1 单片机的选择和相关模块的设置........................................123.1.1 单片机的选择.....................................................123.1.2 相关模块的设置...................................................133.2 输入系统的设计......................................................133.2.1 血压传感器的选择..................................................163.2.2 低通滤波..........................................................163.2.3 键盘与接口的设计..................................................193.3 输出系统设计........................................................213.3.1LED 介绍.........................................................213.3.2 数码显示的驱动电路................................................223.3.3 七段 LED 的显示接口................................................243.3.4 数码管的选取.....................................................263.4 电源的选择..........................................................26第四章软件系统设计.....................................................284.1 单片机主程...