基于单片机的室内空气质量监测系统设计.doc

基于单片机的室内空气质量监测系统设计.doc内蒙古科技大学
本科生毕业设计说明书


题目:基于单片机的室内空气质量
监测系统设计
学生姓名:罗瑞莹
学号:1367119237
专业:通信工程
班级:通信2013-2班
指导教师:胡海东讲师
基于单片机的室内空气质量监测系统设计
摘要
随着我国经济的发展,人民生活水平的提高,人们对环境问题及健康问题日益重视,室内空气品质(IAQ)状况受到越来越多的关注。人的一生中有三分之二的时间是在居室内度过的,室内空气质量的优劣成为影响人身体健康的重要因素。
本课题设计了室内的空气质量检测仪,用于监测室内的VOC气体浓度。该监测仪可以实时显示室内的VOC气体浓度,当室内的VOC气体浓度过高时,蜂鸣器会报警提醒居住者室内的VOC气体浓度超标。
该监测仪的硬件以STC89C52RC为主控,VOC气体传感器监测到的值是模拟量,通过ADC0809转换为数字量,然后送入单片机中进行数据处理,监测的结果显示在LCD1602。软件部分采用了模块化的设计思想。为了提高设计的实用性,本设计增加了时钟电路模块。实验结果表明:室内空气质量监测仪达到了系统设计的要求,运行良好,具有很好的实用价值。
关键词:STC89C52RC;VOC;报警;时钟电路
Design of Indoor Air Quality Monitoring System Based on Single Chip puter
Abstract
With the development of China's economy and the improvement of people's living standard, people pay more and more attention to environmental problems and health problems, and the situation of indoor air quality (IAQ) has received more and more that, about two-thirds of people's life spent in the house,the quality of indoor air quality has e the most important factor that affects People’s health.
This topic has designed an indoor air quality detector used for detecting indoor VOC gas detector can display indoor VOC gas concentration in real time and can cause sound alarm at over-standard concentration to remind occupants that indoor VOC gas concentration exceeded.
The hardware of the detector system include a STC89C52RC as its main control chip,the value detected by the VOC gas sensor is analog,converted to digital by ADC0809,then the value is sent to the microcontroller for data processing,meanwhile the result of the detection is shown in the the part of software design,module idea is order to improve the practicality of the design, this design adds a clock circuit result of the experiment shows that the indoor air quality detector we designed meets the requirement of the system design,operates well and has a high pratical value.
Keywords:STC89C52RC;VOC ;alarm;clock circuit
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