目 录
1. 绪 论 ...................................................................1
1.1 课题背景与现实意义 .....................................................1
1.2 血压计发展现状 .........................................................2
1.3 本文的研究内容 .........................................................3
2. 设计要求及方案论证 ....................................................4
2.1 血压测量原理 ...........................................................4
2.2 设计要求 ...............................................................5
2.3 设计方案 ...............................................................5
2.4 器件介绍 ...............................................................6
2.4.1 AT89S51 单片机简介 .................................................6
2.4.2 模数转换器 ADC0832 简介 .............................................7
2.4.3 压力传感器（US9111-006-D）简介 .....................................9
2.4.4 运算放大器 OP07 和 AD620 简介 .......................................10
3. 硬件电路设计 ..........................................................11
3.1 数据处理模块 ..........................................................11
3.2 模数转换模块 ..........................................................12
3.3 1602 点阵液晶显示 .....................................................12
3.4 气体压力传感器电路模块 ................................................14
3.5 血压信号二次放大电路 ..................................................15
3.6 滤波电路 ..............................................................15
3.7 气泵和气阀驱动电路 ....................................................17
4. 软件设计 ...............................................................18
4.1 数据处理模块 ..........................................................18
4.2 A/D 转换模块 ..........................................................19
4.3 液晶显示模块 ..........................................................20
5. 系统性能测试 ..........................................................23
