基于单片机的室内多功能检测系统系统设计基于单片机的室内多功能检测系统系统设计基于单片机的室内多功能检测系统设计摘要随着我国经济的发展，人民生活水平的提高，人们对环境问题及健康问题日益重视，室内空气品质（IAQ）状况受到越来越多的关；人的一生中有三分之二的时间是在居室内度过的。本文研究的室内便携式智能空气品质监测仪是以室内空气中有毒有害气体的监测监控为背景，是以ATMEL工公司的一款8位超低功耗单片机AT89S52为控制核心，一个51单片机的实时操作系统RTX51tiny将被应用到本系统中，使得本系统实时性更高，性能更可靠；该系统能够实现对室内温湿度、甲醛、CO和甲烷的实时采集处理、显示及相应的报警等功能。仪器采用锂电池供电，具有良好的便携性和通用性，并且使用LCD1602点阵式液晶屏显示菜单，有良好的人机对话界面；同时设计了声光报警系统，实现在参数超标时及时的报警。室内智能空气品质监测仪体积小，功耗低，操作简单，适合应用于家庭和社区的医疗健康保健，能够实时知道室内空气的质量；本设计选用数字化温湿度传感器DTH11对室内温湿度测量,CO和甲烷传感器采用定电位电解式气体传感器所需要的气体进行测量；用单片机控制模拟开关达到对CO、甲烷及甲醛的交替测量与报警。关键词:室内环空气质量;温湿度;数字显示;安全;报警MultifunctionalMicrocontroller-basedindoor-detectionsystemdesignAbstractWiththedevelopmentofournationaleconomyandimprovementofpeople'slivingstandard,awarenessofenvironmentalissuesandhealthproblemsincreasingemphasisonindoorairquality(IAQ)conditionshavebeenpaidmoreattentionto.Two-thirdsofpeople'slifetimeisspentinthelivingroom.Inthispaper,IndoorAirQualityPortableIntelligentMonitorisonthebackgroundoftoxicandharmfulgases,basedonanATMEL8-bitworkingultra-lowpowerMCUAT89S52ascontrolcoreandaRTOScalledRTXtiny51whichcanmaintainthereliabilityandtheinstantaneityofthesystemwillbeusedintothedesign.Thesystemcanrealizereal-timeacquisitionandprocessing,display,alarmandotherfunctionsofindoortemperature,humidity,formaldehyde,benzeneandammonia.Equipmentpoweredbylithiumbatteries,hasagoodportabilityandversatility,andusetheLCD1602dotmatrixLCDscreentodisplaymenu,andhasagoodinteractiveinterface.IndoorAirQualityPortableIntelligentMonitor,smallsize,lowpowerconsumption,simpleoperation,andissuitableforfamilyandcommunityhealthcareinordertoknowreal-timeacquisitionofindoorairquality.ThisdesignusesdigitaltemperatureandhumiditysensorLTM8901tomeasureindoortemperatureandhumidity,aswellasdetectgasconcentrationbyusingconstantpotentialelectrolysisgassensors,andusesmonolithicprocessortocontrolanalogswitchtomeasureCO,CH4andformaldehydealternatelyandgivealarm.Keywords:IAQ,temperatureandhumidity,RTOS,digital,safety,alarm目