目 录
1 绪 论 .........................................................................1
1.1 1.1 研究背景和意义.........................................................1
1.1.1 噪音监测系统的背景分析 ..............................................1
1.1.2 本课题的研究意义 ....................................................2
1.2 课题研究方法和内容题研究 ..................................................2
1.2.1 研究方法 ............................................................2
1.2.2 研究内容 ............................................................3
2 系统分析 ........................................................................4
2.1 系统背景及现状分析 ........................................................4
2.2 需求分析 ..................................................................4
2.3 可行性分析 ................................................................5
3 系统总体设计及硬件实现 ..........................................................7
3.1 系统总体设计 ..............................................................7
3.2 系统硬件实现 ..............................................................8
3.2.1 STM32 单片机模块.....................................................8
3.2.2 声音监测模块 ........................................................9
3.2.3 PM2.5 监测模块.......................................................9
3.2.4 蓝牙通信模块 .......................................................10
3.2.5 液晶显示屏模块 .....................................................11
3.2.6 ADC0832 模数转换模块................................................11
3.2.7 硬件实现效果 .......................................................12
4 系统软件设计与实现 .............................................................13
4.1 开发工具的介绍 ...........................................................13
4.1.1 Keil uVision4 单片机开发工具........................................13
4.1.2 Android Studio 开发工具.............................................13
4.2 软件设计总体思路 .........................................................13
4.3 硬件控制代码设计 .........................................................14
4.3.1 Main 主控函数.......................................................14
4.3.2 AD 转换模块.........................................................15
4.3.3 分贝采集传感器模块 .................................................17
4.3.4 粉尘传感器模块 .....................................................19
4.3.5 蜂鸣器模块 .........................................................21
4.4 客户端 APP 设计 ...........................................................22
4.4.1 客户端 APP 总体设计思路 .............................................22
4.4.2 逻辑流程 ...........................................................23
4.4.3 数据接收并显示程序 .................................................23
4.5 系统实现效果 .............................................................26
5 总 结 .........................................................................28
参考文献： .......................................................................29
致谢 .............................................................................30
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