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1、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
2、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lAbstractInthispaper,acompositionbyinfraredandanewtypeofLEDenergy-savinglamps
3、.Forgenerallighting,peopleneedmorewhitelightsources.Asanewlightsource,whiteLEDwithpollution-free,long-life,vibrationandshockresistanttothedistinctcharacteristics.Theprincipleofinfra-redsensors,switches,pyroelectricinfraredprobe(PT8A2621)willreceivetheweaksignaltobeamp
4、lified,thendriverelays,madeofpyroelectricinfraredsensorswitch.Theswitchcandetectthehumanbodyfromamobileinfraredradiation,aslongasthehumanbodytoenterthedetectionarea,switchwillautomaticallyopen.Thedesigncanbeusedasenterprises,hotels,shoppingmallsandresidentialcorridors
5、,staircases,elevator,bathroom,andtheTreasury,etc.Automaticswitch,playtheroleof"peoplefromthebrightlights,thelightsgooutsince"theroleofboththenewconvenience,andtheconservationofelectricity,insomeplacesalsoactasadeterrentroleintheftpreventionactivities.Simples
6、tructureofthisdesign,thedevicepowerconsumptionisverysmall,lowcost,covert,andawiderangeofapplications,itcanbeachievedthroughtheexpansionofpracticalapplication.Keywords：:LED;Infrared;Sensorswitch;Detectionofregionall目录摘要..................................................
7、...........ⅠAbstract............................................................Ⅱ第1章绪论.........................................................11.1课题背景....................................................11.2目的意义....................................................11.3L
8、ED的介绍..................................................31.4LED光源的优点..............................................61.5LED产业发展
