毕业设计说明书（论文）中文摘要现代科技技术水平在日益发展中，一些燃气的使用已经逐步普及起来，在提高了人们生活水准的同时，也导致人类针对生活品质有了一定的追求并且想要改善生活的环境，同时造成了一些风险发生，这之中的CO的危害是最大的，对于这个现象，进行对燃气的泄露的检验进行研发。这个课题运用的对于气体的报警装置是以单片机为主题，气体的传播感应装置以及对其数据的转换的芯片等装置的连接起来，经过单片机进行运作，并对处理后的数据进行分析，查看其和设定的气体的浓度值是否超过了，如果超过了就能够自动开启报警装置，反之则不会报警。这个系统的运用很简单快捷、检测的准确度高，能够拥有一定程度的市场的价值以及进行研究的意义。关键词单机气体的传感装置报警装置PCF8591毕业设计说明书（论文）外文摘要TitleGasmeasurementsystemdesignAbstractWiththerapiddevelopmentofeconomiclevelandscienceandtechnology,liquefiedpetroleumgas,gas,andnaturalgashaveenteredordinaryhouseholds.Whileimprovingpeople'slivingstandards,peoplehavepaidmoreandmoreattentiontotheimprovementoftheirqualityoflifeandlivingenvironment.Peoplehavebroughtcertainpotentialdangers,amongwhichcarbonmonoxideisthemostimportantsourceofdanger.Tosolvethisproblem,aflammablegasdetectionsystemisproposed.ThedesigngasalarmadoptsSTC89C52single-chipmicrocomputerasthemaincontrol.TheMQ-2gassensorisconnectedwiththePCF8591A/Danalog-to-digitalconversionchip.Theanalogsignalisconvertedintoadigitalsignalandtransmittedtothesingle-chipmicrocomputer.ItisprocessedbytheSTC89C52single-chipmicrocomputerandprocessed.Thedataisanalyzedtoseeifitisgreaterthanthesetgasconcentrationvalue.Ifitis,itwillautomaticallystartthealarmcircuittosendanalarmsound,otherwiseitwillnotalarm.Thesystemiseasytooperate,sensitivetodetectionandcost-effective,andhascertainmarketapplicationvalueandresearchsignificance.KeywordsSinglechipGassensorAlarmPCF8591目录1.1课题背景及其意义................................................................................................................................41.2国内外的研究状况................................................................................................................................51.3本文的主要研究内容及论文结构安排.................................................................................................62.1控制方案的确定....................................................................................................................................72.2控制方式的选择....................................................................................................................................72.2.1主控芯片的选择.........................................................................................................................72.2.2声音报警电路方案的选择..........................................................................................................82.2.3显示方案的选择..........................................................................................................................82.2.4A/D采样芯片的选择..................................................................................................................93.1系统的功能分析及体系结构设计.......................................................................................................113.1.1系统功能分析............................................................................................................................113.1.2系统总体...
