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1、毕业设计(论文)题目红外人体感应开关电路的设计学生姓名刘燕学号1213024049所在学院物理与电信工程学院专业班级通信工程专业1202班指导教师吴燕完成地点物理与电信工程学院通信工程实验室2016年06月05日红外线人体感应开关电路的设计刘燕(陕西理工学院物理与电信工程学院通信工程专业1202班陕西汉中723003)指导教师:吴燕[摘要]红外线人体感应开关电路由红外传感器、单片机控制电路、LED控制电路及相关的控制管理软件组成。人体发射的红外线经过菲涅尔滤光片增强后聚集到采用热释电元件制成的红外感应源上,感应头在
2、接收到人体红外辐射温度发生变化时经检验处理即可产生光照信号。当开关电路在需要照明的环境下,距离感应开关4-5m的地方,一旦有人体经过,开关电路接通并点亮照明用具,持续8s左右熄灭。美中不足的是,感应头一经遮挡就无法正常工作。[关键词]热释电;红外感应器;菲涅尔透镜IThedesignofinductionswitchwithinfraredrayofhumanbodyLiuYan(Grade2012,Class2,MajorofCommunicationEngineering,SchoolofPhysicsandT
3、elecommunicationEngineeringofShaanxiUniversityofTechnology,Hanzhong723003,Shaanxi)Tutor::WuYanAbstract:Infraredsensorswitchcircuitbytheinfraredsensor,microprocessorcontrolcircuit,LEDcontrolcircuitandassociatedcontrolandmanagementsoftware.Humaninfraredraysemitt
4、edthroughtheFresnelfilterinfraredsensorstogatherenhancedsourcepyroelectricelementmadeofinductionheadslosechargebalanceuponreceiptofinfraredradiationtemperaturechangestotheoutwardcharge,follow-upICintegratedcircuitistogeneratethelightsignalinspectionprocess.Whe
5、naddingthesensortothecontrolcircuitworkingenvironment,inthelightofweakintensityenvironment,4-5mplaceproximityswitch,inductivesourcereceivesinfraredsignalsemittedbythehumanbodythroughthehumanbody,andcircuitswitchedpointbrightlightingappliances,lastsabout8sextin
6、guished.Theresultsshowthat,intheneedinglightconditions,thisswitchcanbeaconvenientstopstart,flyintheointmentisblockedbyasensorheadwillnotworkproperly.KeyWords:Pyroelectric;infraredsensor;FresnellenII目录1.引言........................................................
7、...................................................12.硬件系统分析与设计...............................................................................22.1方案论证与选择.....................................................................................22.2红外传感器.............
8、................................................................................22.2.1人体红外线传感器的基本结构和原理......................................22.2.2红外线传感器的优缺点........................