红外线感应开关.docx

摘要
本文介绍了红外线感应开关的原理，采用热释电红外探头（PT8A2621）将接收到的微弱信号加以放大，然后驱动继电器，制成红外热释电感应开关。本开关能探测来自移动人体的红外辐射，只要人体进入探测区域，开关会自动开启。该设计可作为企业、宾馆、商场及住宅的走廊、楼梯、电梯间、卫生间、库房等处的自动开关，起到“人来灯自亮，人走灯自灭”的作用，既新颖方便，又节约用电，在某些场所还能起到威慑盗窃活动的防范作用。本设计结构简单，本身不发任何类型的辐射，器件功耗很小，价格低廉，隐蔽性好，应用范围广，所以可以通过扩展而达到实际的应用。并给出了被动式热释电红外探测器和可见光探测器探测的数据并通过单片机处理后与国家标准设定的数值进行了对比。简述了输出调节信号、控制LED驱动电路和照明系统对室内亮度进行调节的过程。通过理论分析提出了合理的稳压电源、连接方式、灯体结构的设计方法解决LED的驱动电源、连接方式和散热三个问题。试安装一年结果表明照明效果稳定节能超过50效果明显。
关键词：LED；红外线；感应开关；探测区域
AbstractInthispaperacompositionbyinfraredandanewtypeofLEDenergy-savinglamps.Forgenerallightingpeopleneedmorewhitelightsources.AsanewlightsourcewhiteLEDwithpollution-freelong-lifevibrationandshockresistanttothedistinctcharacteristics.Theprincipleofinfra-redsensorsswitchespyroelectricinfraredprobePT8A2621willreceivetheweaksignaltobeamplifiedthendriverelaysmadeofpyroelectricinfraredsensorswitch.Theswitchcandetectthehumanbodyfromamobileinfraredradiationaslongasthehumanbodytoenterthedetectionareaswitchwillautomaticallyopen.ThedesigncanbeusedasenterpriseshotelsshoppingmallsandresidentialcorridorsstaircaseselevatorbathroomandtheTreasuryetc.Automaticswitchplaytheroleofquotpeoplefromthebrightlightsthelightsgooutsincequottheroleofboththenewconvenienceandtheconservationofelectricityinsomeplacesalsoactasadeterrentroleintheftpreventionactivities.Simplestructureofthisdesignthedevicepowerconsumptionisverysmalllowcostcovertandawiderangeofapplicationsitcanbeachievedthroughtheexpansionofpracticalapplication.Keywords：:LEDInfraredSensorswitchDetectionofregional
目录
摘要......................................................Ⅰ
Abstract..........................................................Ⅱ

第1章绪论.........................................................11.1课题背景....................................................11.2目的意义....................................................11.3LED的介绍..................................................31.4LED光源的优点..............................................61.5LED产业发展历程及相关企业背景...............................71.6课题