裴宁的论文.pdf

长春理工大学硕士学位论文基于光谱吸收法的瓦斯检测技术的研究姓名:裴宁申请学位级别:硕士专业:检测技术与自动化装置指导教师:李海富 20100301 摘要目前,我国正处在一个能源紧缺的状况下,以至于全国各个煤矿企业日益加大煤炭资源的开发利用,由于忽视了安全生产,导致近年来瓦斯爆炸事故频繁发生,占矿井发生事故的一半以上,两个主要物理原因是CH4与02的浓度达到爆炸界限和存在火源点,严重地影响着职工的生命安全和煤矿的安全生产。实时准确地检测煤矿瓦斯气体浓度对保障安全生产有着十分重要的意义。所以煤矿瓦斯检测技术的研究越来越受到人们的重视。长期以来,各国科学家们都在努力的研究新型的瓦斯气体检测技术,在众多瓦斯浓度检测方法中,红外光谱技术是目前检测瓦斯气体较为有效的方法,该技术被广泛地应用到煤矿事业、煤气管道检测、环境污染检测以及使用天然气的家庭等众多领域中。本文介绍了选题的背景、瓦斯的性质、红外瓦斯检测方法、应用背景及领域。本论文着重介绍了红外探测系统的总体设计思想、微弱信号的检测技术及检测系统的软、硬件设计,对如何应用单片机ATMEGAl6芯片作微控制器,来完成数据的采集、处理判断、数据的显示和传输等一系列功能作了重点的阐述和分析。针对目前大多数设备不具备数据传输这一特性,重点对RS485总线方式作了阐述,并采用了RBF神经网络的方法对温度进行了补偿,提高了测量精度,达到了理想的效果。关键词:甲烷单片机爆炸数据传输 ABSTRACT At presenL our country under asituation of allenergy shortage,SO thatfrom every coal mlnmg enterprises growing development and utilization of coalresources,due toneglect thesafety inproduction, coal mine methane explosion always happen,account formore than half of coal mine concentration ofCH4 and 02 toreach explosive limitsand thepresence offire points are也e two main physical reasons,which seriously affect the coal mine safety production and workers ofthedistribution ofcoalmine gas concentration and accurately on theprotection ofsafety isvery ,coal gas detection technology research attracts more and more people’S attention,for along time, scieutists舫m various countries aleworking hard onthegas detection technology,a number of 2aS concentration measurement methods,the infrared spectraltechnology is one of currently effectiveway ofharmful gases detection methods. The paper describes thebackground,the nature ofthemethane,and introduces its detection methods,background and areas paper focuses on the overall thought ofthedesign infrared detection system,weak signal detection techniques anddesign so鲰vare and hardware detection system,how toapply theATMEGA 6 chip formicro controller unit,plete thedatacollection,processing todetermine,data display and of aseriesof f