机电综合应用目:温湿度、酒精浓度、烟雾浓度检测报警系统题班专业班级:测控08系部名称:信息工程系学生姓名:学号:教师职称:讲师指导教师:2011年12月29日信息商务学院课设论文要摘酒精泄露的检测、监控以及对酒后驾车的检测对居民的人身和财产安全都是十分重要且必不可少。资料显示,我国近几年发生的重大交通事故中,有将近三分之一是有酒后驾车引起的。为了防止机动车辆驾驶人员酒后驾车,现场实时对人体呼气中酒精含量的检测已日益受到重视,酒精浓度测试仪逐渐得到广泛应用。此外,酒精测试也可应用于食品加工、酿酒等需要监控空气中酒精浓度场合。如今,气体传感器向低功耗、多功能、集成化方向的发展,因此,酒精浓度检测仪具有十分广阔的现实市场和潜在的市场要求。烟雾报警器就是通过监测烟雾的浓度来实现火灾防范的,烟感器内部采用离子式烟雾传感,离子式烟雾传感器是一种技术先进,工作稳定可靠的传感器,被广泛运用到各种消防报警系统中,性能远优于气敏电阻类的火灾报警器。本文运用了单片机,并借助相应的外围电路,将检测结果通过LCD、LED等显示方法告知使用者。本设计用的MQ303酒精传感器就是一种对气体敏感的化学传感器,以及MQ-2烟雾浓度传感器,它们随着外部气体的浓度不同而改变敏感膜的电阻。系统选STC89C52RC单片机为控制核心,对检测到的气体状况进行相应的处理分析、处理和显示,并能够实现超限报警。关键字:酒精传感器,烟雾传感器,STC89C52单片机,显示报警I信息商务学院课设论文AlcoholsmokesensorreportsAbstractAlcohol,leakdetection,monitoringanddrunkdrivingdetectiononResidents'personalandpropertysafetyisveryimportantandessential.Datashows,ourcountryinlastfewyearsthemajortrafficaccidents,therearenearly1/3isadrunkendriving.Inordertopreventthemotorvehicledriversdrunkdriving,liveonhumanbreathalcoholcontentdetectionhasreceivedincreasingattention,alcoholconcentrationtestinstrumentwidelyused.Inaddition,alcoholtestcanalsobeusedinfoodprocessing,wineandotherneedtomonitorairalcoholconcentration.Nowadays,thegassensortolowpower,multi-function,integrateddevelopment,therefore,thealcoholconcentrationdetectorhasaverybroadmarketandpotentialmarketdemand.Thesmokealarmisbymonitoringthesmokeconcentrationtoachievefireprevention,smokedetectors,theinternaluseofionsmokesensor,ionsmokesensorisakindofadvancedtechnology,stableandreliableoperationofthesensor,iswidelyusedinallkindsoffirealarmsystem,performancefarsuperiortothegassensingresistancetypefirealarm.Thispaperusesthesinglechipmicrocomputer,andwiththeaidoftheperipheralcircuit,thedetectionresultsbyLCD,LEDandotherdisplaymethodstoinformtheuserof.ThedesignoftheMQ303alcoholsensorisakindofgassensitivechemicalsensor,aswellasMQ-2smokeconcentrationsensor,withexternalgasconcentrationsorindifferentsensitivemembraneresistance,SelectionofSTC89C52RCMCUasthecontrolcore,thedetectedgasconditioncorrespondingtreatmentanalysis,processingandreality,andthroughthealarmtoprompt.alcoholsensorsmokesensorsingle:KeywordschipSTC89C52displayalarmII信息商务学院课设论文目录1、总体思想.......................................................................................1................................................................1系统设计所需资源.1.11.....................................................2.2系统框图和主程序流程图2、方案选择.......................................................................................32.1单片机的选择.........................................................................32.2传感器的选择.........................................................................5酒精传感器的选择...............................