室内有害气体无线监测系统设计

发布时间：2018-05-13 19:27

本文选题：单片机 + 气体传感器　；参考：《宁夏大学》2017年硕士论文

【摘要】：室内空气质量问题一直关乎着居民的工作和健康,伴随居民生活水平的日渐进步,居民们对于自身所居住的环境水平也愈高。而近年来,工业中产生的各种废气、油漆厂以及室内装修材料.的不合格散发的有毒气体对人体的健康造成了严重危害;还有室内常用的煤气、液化石油气、天然气等容易燃烧性气体的外漏导致的中毒事件也频繁发生,甚至危及到人们的生命。因此,为了有效控制监测居住环境中有害气体的浓度,及时提醒用户,室内空气质量监测的研究就有着非常实际的意义,本系统主要针对人们长期居住、工作场所的室内空气质量监测预警而设计的。针对不同家庭、不同环境(如应用在工业生产、装潢装饰等或一些公共场所如学校、医院、地铁、办公场所、宾馆、商场等重要特殊的场所)监测参数实时性和低功耗的要求,有不同的监测点,设计了一种基于无线传感网络的有害气体浓度检测报警系统。系统由一个负责与PC机通信的主机节点和多个采集数据节点模块组成检测网络,每个数据采集节点通过气体传感器采集甲醛气体和CO等气体浓度数据,并通过Nordic公司的nRF2401射频模块组成节点,再由若干个节点与主节点组成一个无线传感网络。主机节点是以AT89C2051为主控芯片通过nRF2401射频模块接收各采集节点传输来的数据,接收到数据之后,微处理器对有效数据进行处理,并送至主机节点的显示部分,将室内环境参数实时显示给用户。同时,当室内的有害气体浓度高于设定的安全值时,对数据进行分析并及时报警,以便降低有害气体带来的危害,使人们能够拥有一个的健康绿色的生活、工作环境。
[Abstract]:The problem of indoor air quality is always related to the work and health of the residents. With the development of the living standards of the residents, the higher the environmental level of the residents is. In recent years, industrial emissions, paint plants and interior decoration materials. The toxic gases emitted by the substandard gas have caused serious harm to human health. There have also been frequent poisoning incidents caused by the leakage of combustible gases such as gas, liquefied petroleum gas, natural gas, etc., which are commonly used indoors. It even endangers people's lives. Therefore, in order to effectively control and monitor the concentration of harmful gases in the living environment and remind users in time, the study of indoor air quality monitoring has a very practical significance. This system is mainly aimed at people living for a long time. Workplace indoor air quality monitoring and warning designed. For different families, different environments (such as in industrial production, decoration, etc., or in some public places such as schools, hospitals, subway, office, hotels, shopping malls and other important special places) monitoring parameters real-time and low-power requirements, With different monitoring points, a harmful gas concentration detection and alarm system based on wireless sensor network is designed. The system is composed of a host node responsible for communicating with PC and a number of data acquisition node modules. Each data acquisition node collects formaldehyde gas and CO gas concentration data through gas sensor. The wireless sensor network is composed of several nodes and master nodes through the nRF2401 RF module of Nordic Company. The host node takes AT89C2051 as the main control chip to receive the data transmitted by each acquisition node through the nRF2401 RF module. After receiving the data, the microprocessor processes the effective data and sends it to the display part of the host node. The indoor environmental parameters are displayed to the user in real time. At the same time, when the indoor concentration of harmful gas is higher than the set safety value, the data are analyzed and alerted in time, so as to reduce the harm caused by harmful gas and make people have a healthy and green living and working environment.
【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP274

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