目录
1 引言..............................................................................................................................1
1.1 课题背景 ...........................................................................................................1
1.1.1 噪声污染的危害 .....................................................................................1
1.1.2 噪声污染的现状 .....................................................................................2
1.1.3 噪声简介 .................................................................................................2
1.2 噪声监测系统的发展现状 ...............................................................................3
1.3 主要任务及意义 ...............................................................................................4
1.3.1 设计任务 .................................................................................................4
1.3.2 课题的意义 .............................................................................................5
1.3.3 论文内容安排 .........................................................................................5
2 噪声监测系统的总体设计 .........................................................................................6
2.1 噪声监测系统分析 ...........................................................................................6
2.2 硬件系统设计 ...................................................................................................6
2.3 软件系统设计 ...................................................................................................8
3 噪声监测系统的硬件设计 .......................................................................................10
3.1 传声器 .............................................................................................................10
3.2 信号放大器 .....................................................................................................11
3.3 交直流转换电路的设计 .................................................................................13
3.3.1 真有效值 ...............................................................................................13
3.3.2 AD536 芯片 .......................................................................................14
3.4 单片机系统的设计 .........................................................................................15
3.4.1 单片机的选择 .......................................................................................15
3.4.2 89C52 的简介 .....................................................................................................15
3.5 显示及指示电路的设计 .................................................................................17
3.5.1 显示电路的设计 ...................................................................................17
3.5.2 指示电路的设计 ...................................................................................18
4 噪声监测系统的软件设计 .......................................................................................19
4.1 程序系统框图 .................................................................................................19
