目 录
摘 要 ................................................I
Abstract ...........................................................................................II
目 录 ..............................................................................................III
第一章 绪论 ......................................................................................1
1.1 噪音测量仪的选题背景........................................................................1
1.2 噪音........................................................................................................1
1.3 噪声的分类.............................................................................................2
1.4 噪声的危害.............................................................................................3
1.4.1 噪声对听力的损伤......................................................................3
1.4.2 噪声对健康的影响......................................................................4
1.4.3 噪声对正常生活和工作的干扰..................................................4
1.4.4 特强噪声能损害仪器设备和建筑物..........................................5
1.5 噪声的评价.............................................................................................5
1.5.1 响度级和响度..............................................................................5
1.5.2 声级..............................................................................................6
第二章 功能概述和总体方案设计 ..................................................8
2.1 功能概述.................................................................................................8
2.1.1 噪声测量原理..............................................................................8
2.2 系统设计方案.........................................................................................8
2.2.1 噪声监测系统任务分析..............................................................8
第三章 系统硬件电路设计分析 ......................................................9
3.1 基于单片机环境噪音测量基本构成及原理.........................................9
3.2 系统硬件总电路组成...........................................................................10
第四章 软件设计 ............................................................................11
4.1 频率与声压级检测算法.......................................................................11
4.2 程序流程图...........................................................................................11
4.3 设计程序如下.......................................................................................12
