煤矿瓦斯监测报警器摘要能源工业是一个国家经济发展的命脉。近年来，随着石油的紧张，石油价格的飙升，煤炭行业的重要地位和不可替代性也日益显现。然而，中国煤炭行业的安全形势却不容乐观，尤其是重、特大上网那个事故屡见报端。在这些事故中，瓦斯爆炸有占绝大多数。这其中，固然有很多诱发因素，但个煤矿生产企业安全监测设备不完备、管理手段落后是造成事故的重要因素之一。论文设计的内容是煤矿监测报警器，论文的内容从题目上看就可知道要分两部分来解决：一是煤矿瓦斯的监测，二是系统的报警。论文首先阐述了CH4监测系统同的发展及状况。在本文中，我们设计介绍了一种基于甲烷传感器MQ-4和单片机AT89S51的煤矿瓦斯监测报警器。我们给出了其硬件组成及软件的设计方案，使其能达到进行瓦斯监测的预期目标。本设计的硬件电路包括浓度检测，A/D转换，单片机系统，键盘电路，数据显示电路及各控制电路；软件设计包括浓度采集，数据转换及处理，键盘扫描，动态显示及浓度控制等。通过软硬件的设计可实现对瓦斯浓度的监测并且当其浓度超过预警值时可进行声光报警并排风以降低瓦斯浓度。在论文中，我们简单论述了报警器的控制方案及工作原理，给出了主程序及主要子程序的框图。此次设计的瓦斯监测报警器具有操作简便，运行稳定，检测比较准确的特点。关键字瓦斯监测传感器单片机声光报警A/D转换电路THEDESIGNOFTHEMONITORINGDETECTORSFORTHECOALMINEGASAbstractEnergyindustryisthevitalsofourcountry’seconomydevelopment.Inrecentyears,incompanywithpetroleumresourcesshortage,petroleumpricesgrowrapidly.Theimportanceandunsubstitutabilityofcoalindustryincreaseeveryday.ButChinesecoalindustrysafetyinproductionrefuseoptimism,asseriouscasualtyrepeatedlyappearedinthenewspaper.Gasexplosionoccupythemostpartofthoseaccident.Itissurethatmanyfactorscausedthat,buteachcollieryenterprise’slackofsafetymonitoringequipment,ladderofmanagementlagaretheoneofsubstantialreasons.Thedissertationdesigncontentistheminepitcoalgasexamination,thealarmsystemdesign.Thepapercontentfromthetopiclookedmayknowmustdividetwopartstosolve.Oneistheminepitcoalgasexamination,andanotheristhealarmsystemdesign.Firstofall,thedissertationexpoundsthedevelopmentandactualityofCH4instrumentaion.Inthispaper,weintroducedadesignofthemonitoringdetectorsforthecoalminegaswhichbasedonagassensorMQ-4andsingleenlargementAT89S51system.Wegavethehardwareandsoftwareofthedesignofprogrammerstoachievethedesiredobjectivesforgasmonitoring.Thehardwareincludingthedesignoftheconcentrationtesting,electriccircuitA/Dconversion,AT89S51system,keyboardcircuit,electriccircuitmonolithicintegratedcircuitacousto-opticsreportstothepolice,thedatashowcircuitandcontrolcircuit.Thesoftwaredesignincludingconcentrationscollection,dataconversionandhandling,keyboardscanning,dynamicscanning,andthecontroloftheconcentrationandsoon.Softwareandhardwaredesigncanrealizethemonitoringofthegasconcentrationsandiftheconcentrationsexceedthevalueofearlywarningcansoundandlightwarningandopentheplatoonfanstoreducegasconcentrations.Inthepaper,webrieflydiscusseddetectorsprogrammersandoperatingprinciplesofthecontrol,andgiventhemainflowchartthediagramoftheprocedures.Thisdesigniseasytooperateandthedesign’soperationisstability,andthedetectionismoreaccurate.Thekeywords:gasmonitoring,sensors,singleenlargement,electriccircuitmonolithicintegratedcircuitacousto-opticsreportstothepolice,electriccircuitA/Dconversion目录中文摘要……………………………………………………………………………………Ⅰ英文摘要……………………………………………………………………………………Ⅱ绪论……………………………………………...