设计简介：
项目名：基于单片机的的设计
单片机：STC89C52
功能简介：
1、通过声音检测模块检测具体噪音值，当超过设置最大值，进行声光报警，并通过蓝牙发送数据及提示信息
2、通过按键设置最大值
3、通过LCD1602显示数据
总字数：9786
摘 要：
随着城市化进程的快速推进,生活质量提高的同时，也伴随着各种问题日益浮现。其中环境噪声就是难以解决的问题之一。为了使环境噪声污染问题得到更好解决,本文设计一款环境噪声监测系统,采用价格低廉、性能优良STC89C52单片机作为主控芯片,通过声音检测传感器对噪声信号进行采集,再通过A/D转换器将采集到的电压信号转换为数字信号,数字信号可以直接传入单片机进行处理，最后将结果显示在液晶屏上。当检测噪音分贝值超过预设最大值，进行声光报警；本研究采用蓝牙技术,可以实现该系统和Android手机设备噪音分贝信息的双向传输,方便噪音监测和噪音处理。
关键词：STC89C52；噪音检测；蓝牙；声光报警
Design of noise monitoring system based on single chip microcomputer
Abstract：
With the rapid progress of urbanization, the quality of life is improved, but also accompanied by a variety of problems emerge. Environmental noise is one of the difficult problems to solve. In order to better solve the problem of environmental noise pollution, this paper designs an environmental noise monitoring system, using low price, good performance STC89C52 microcontroller as the main control chip, through the sound detection sensor to collect the noise signal, and then through A/D converter to collect the voltage signal into digital signal, digital signal can be directly into the microcontroller The result is displayed on the LCD screen. When the detected noise decibel value exceeds the preset maximum value, sound and light alarm; This study uses Bluetooth technology, which can realize two-way transmission of noise decibel information between the system and Android mobile devices, convenient noise monitoring and noise processing.
Key words： STC89C52; Noise detection; Bluetooth; Sound and light alarm
目 录
1 绪 论 1
2 系统方案设计 4
3 硬件电路设计 7
4 系统程序设计 11
5 实物调试 16
6总结与展望 19
参考文献 20
致 谢 1
附 录 1