目 录
摘 要...............................................................................................................................................................I
Abstract..........................................................................................................................................................II
目 录 ............................................................................................................................................................III
1. 引 言.......................................................................................................................................................1
1.1 研究的背景和意义 ..................................................................................................................1
1.2 国内外研究现状 .......................................................................................................................1
1.3 本论文设计内容 .......................................................................................................................2
2. 总体方案的分析与论证...............................................................................................................2
2.1 设计任务及要求 .......................................................................................................................2
2.2 设计方案的比较与选择 .......................................................................................................3
3. 系统硬件的设计 ................................................................................................................................4
3.1 MCU 的简介 ...................................................................................................................................4
3.2 MCU 的选择 ...................................................................................................................................5
3.2.1 STC89C52 的简介.........................................................................................................5
3.2.2 STC89C52 的主要参数 ..............................................................................................5
3.2.3 STC89C52 的引脚.........................................................................................................6
3.3 温度采集模块.............................................................................................................................8
3.3.1 温度传感器的介绍.....................................................................................................8
3.3.2 DS18B20 的工作原理.................................................................................................9
3.4 温度显示器模块 .....................................................................................................................11
3.5 电机转速显示模块 ................................................................................................................12
3.6 电机驱动模块 L298N 芯片 ................................................................................................12
3.7 直流电机 .....................................................................................................................................14
3.8 PWM 调速原理 ............................................................................................................................14
3.9 系统硬件原理图 .....................................................................................................................15
4. 软件设计及系统调试...................................................................................................................16
4.1 软件设计主程序流程图 .....................................................................................................16
4.2 系统仿真软件介绍 ................................................................................................................17
4.3 系统调试 .....................................................................................................................................19
4.3.1 Proteus 仿真调试 ....................................................................................................19
4.3.2 系统整体调试及操作 .............................................................................................20
5. 总 结.....................................................................................................................................................22
参考文献.......................................................................................................................................................24
致 谢 ............................................................................................................................................................25
附 录 ............................................................................................................................................................26
