细颗粒物PM2.doc

学号:1111410011
本科毕业论文(设计)
(2015届)
细颗粒物()检测系统的设计

院系电子信息工程学院
专业电气工程及其自动化
姓名韦德宝
指导教师王俊杰助教

2014年5月
摘要
随着现代工业发展,污染越来越严重,空气质量也越来越受人们关注。。
,利用气体传感器MQ-2、ADC0809模数转换器的A/D转换原理,将被测的模拟量转化为数字量,然后已数字的形式显示出来,实现基本功能。并且还使用keil软件进行所需要的程序的编程还有调试,编程结束时,会生成一个hex文件,并将此文件导入已做好的仿真软件中,这样可检测软件编程的正确与否。控制器STC89C52通过这些传感器和芯片,当环境中烟雾浓度或可燃气体浓度等发生变化时系统会发出相应的灯光报警信号和声音报警信号,以此来实现烟雾报警,当烟雾达到一定的范围时,系统还可以加上驱动继电器工作,继电器可以驱动负载,如换气风扇、报警信号灯、消火栓水龙头开关等。实现智能报警控制。
关键词:气体传感器MQ-2;空气质量检测;单片机;智能控制
Abstract
With the development of city, the pollution is more and more serious, air quality is ing more and more attention by people. detector has been widely applied.
This topic research of STC89C52 detector is used as the core controller, using MQ - 2 gas sensor, A/D conversion principle of ADC0809 , the analogue into digital quantity will be measured, and then has digital display, in the form of realization of basic functions. And also use the keil software programming and debugging of the required program, at the end of the programming, generates a hex file, and the file to import the simulation software has pleted, the software programming can be detected correctly or not. Controller STC89C52 through these sensors and chips, when the smoke concentration in the environment bustible gas concentration change system have a corresponding light alarm signals and voice alarm signal, in order to realize the smoke alarm, when smoke reaches a certain scope, the system can also add drive relay work, relay can drive load, such as ventilation fan, alarm lights, fire hydrant water faucet switch, intelligent alarm control.
Key words: MQ-2 gas sensor;Air quality detection ; MCU; intelligent control
目录
摘要 0
Abstract 1
1 绪论 3
课题的研究背景 3
课题的研究目的与意义 3
3
4
2 4
5
系统的技术要求 5
系统的组成及方案设计 5
3 系统的硬件设计 6
主控电路 6
烟雾探测电路的设计 9
MQ-2介绍 9
ADC0809介绍 10