目 录
摘要.......................................................................................................................................................................II
Abstract...............................................................................................................................................................III
1 绪论 ....................................................................................................................................................................1
1.1 研究目的和意义及国内外发展现状 .............................................................................................1
1.2 基本内容及章节安排 .....................................................................................................................2
2 总体方案设计 ....................................................................................................................................................3
2.1 控制器智能项目 ....................................................................................................................................3
2.2 系统总体结构规划 ................................................................................................................................4
3 系统硬件设计 ...................................................................................................................................................5
3.1 89C51 单片机及相关电路 ......................................................................................................................5
3.1.1 晶振电路 ......................................................................................................................................6
3.1.2 复位电路 ......................................................................................................................................6
3.1.3 时钟电路 ......................................................................................................................................7
3.1.4 电源电路 .....................................................................................................................................9
3.2 步进电机 ................................................................................................................................................9
3.3 键盘/显示接口电路 .............................................................................................................................11
3.3 传感器 ..................................................................................................................................................13
3.4 信号调理电路 ......................................................................................................................................14
3.4.1 放大滤波电路 ...........................................................................................................................14
3.4.2 A/D 转换 .....................................................................................................................................14
4 系统软件设计 .................................................................................................................................................16
4.1 主程序软件设计 ..................................................................................................................................16
4.2 主要功能子程序设计 ..........................................................................................................................17
4.2.1 步进电机程序设计 ...................................................................................................................17
4.2.3 键盘程序设计 ...........................................................................................................................18
4.2.4 定时程序设计 ...........................................................................................................................19
5 总结与展望 .....................................................................................................................................................21
参考文献 .............................................................................................................................................................22
致谢 .....................................................................................................................................................................23