基于单片机的脉搏计大学学位论文.doc

PAGE 27 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc383173624 1 引言 PAGEREF _Toc383173624 \h 2 HYPERLINK \l _Toc383173625 1.1 目的和意义 PAGEREF _Toc383173625 \h 2 HYPERLINK \l _Toc383173626 1.2 研究概况及发展趋势综述 PAGEREF _Toc383173626 \h 3 HYPERLINK \l _Toc383173627 1.3 本系统主要研究内容 PAGEREF _Toc383173627 \h 4 HYPERLINK \l _Toc383173628 2. 总体方案论证与设计 PAGEREF _Toc383173628 \h 5 HYPERLINK \l _Toc383173629 2.1主控模块的选型和论证 PAGEREF _Toc383173629 \h 5 HYPERLINK \l _Toc383173630 2.2显示模块的选型和论证 PAGEREF _Toc383173630 \h 5 HYPERLINK \l _Toc383173631 2.3传感器的选型和论证 PAGEREF _Toc383173631 \h 5 HYPERLINK \l _Toc383173632 2.4时钟芯片的选型和论证 PAGEREF _Toc383173632 \h 6 HYPERLINK \l _Toc383173633 2.5系统整体设计概述 PAGEREF _Toc383173633 \h 6 HYPERLINK \l _Toc383173634 3.系统硬件电路设计 PAGEREF _Toc383173634 \h 7 HYPERLINK \l _Toc383173635 3.1主控模块 PAGEREF _Toc383173635 \h 7 HYPERLINK \l _Toc383173636 3.1.1 STC89C52单片机主要特性 PAGEREF _Toc383173636 \h 7 HYPERLINK \l _Toc383173637 3.1.2 STC89C52单片机的中断系统 PAGEREF _Toc383173637 \h 10 HYPERLINK \l _Toc383173638 3.1.3 单片机最小系统设计 PAGEREF _Toc383173638 \h 10 HYPERLINK \l _Toc383173639 3.2 LCD液晶显示器简介 PAGEREF _Toc383173639 \h 10 HYPERLINK \l _Toc383173640 3.2.1 液晶原理介绍 PAGEREF _Toc383173640 \h 10 HYPERLINK \l _Toc383173641 3.2.2液晶模块简介 PAGEREF _Toc383173641 \h 11 HYPERLINK \l _Toc383173642 3.2.3液晶显示部分与STC89C52的接口 PAGEREF _Toc383173642 \h 12 HYPERLINK \l _Toc383173643 3.3键盘模块设计 PAGEREF _Toc383173643 \h 12 HYPERLINK \l _Toc383173644 3.4蜂鸣器模块设计 PAGEREF _Toc383173644 \h 13 HYPERLINK \l _Toc383173645 3.5信号采集电路设计 PAGEREF _Toc383173645 \h 13 HYPERLINK \l _Toc383173646 3.5.1　传感器简介 PAGEREF _Toc383173646 \h 13 HYPERLINK \l _Toc383173647 3.5.2　放大电路 PAGEREF _Toc383173647 \h 14 HYPERLINK \l _Toc383173648 3.5.3　整形电路 PAGEREF _Toc383173648 \h 14 HYPERLINK \l _Toc383173649 3.5时钟模块的设计 PAGEREF _Toc383173649 \h 14 HYPERLINK \l _Toc383173650 3.5.1 DS1302概述 PAGEREF _Toc383173650 \h 15 HYPERLINK \l _Toc383173651 3.5.2 DS1302内部RTC 和RAM 地址分配 PAGEREF _Toc3831736