relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题,中国作为屹立在世界东方的大国,要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”,再到G20峰会,都体现出中国一个负责任的大国形象。基于单片机的智能照明控制系统一、产品介绍本系统设计了一套应用于宿舍、工作室及大型停车场的LED智能照明系统。利用9V变压器与LM7805组成交流转直流5V稳压源为系统供电,通过热释电红外探测器采集数据,无线模块实现全区域内的数据传输,采用大功率LED恒流驱动方案,并利用可调光芯片BP1360和先进的PWM技术对LED灯进行调光,同时利用脉宽调制技术控制舵机,使得LED灯在两个自由度(各180°)上自由旋转,自动锁定空间的5个位置实现照明,同时可以通过手动遥控器进一步对系统进行控制,自由选择照明方式,体现对LED灯的智能化和人性化,进一步实现绿色照明。本设计无论是单个模块还是整体的功能,都能较好地实现。针对照明时出现的一些资源浪费进行改善,通过检测是否有人控制灯的亮灭.而且根据人数的多少进行亮度的调整和区域照明范围的改变,实现资源利用的极大化,更满足人们对照明的需求。本系统稳定性较好,实现了既定的各个功能,即能准确检测到人出现在区域的位置(0,1,2,3,4),并发出对应的信号给单片机,单片机根据信号相应调整LED灯的亮度和舵机转向位置,达到了资源利用的高效化,同时也能实现手控遥控器控制。relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题,中国作为屹立在世界东方的大国,要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”,再到G20峰会,都体现出中国一个负责任的大国形象。二、产品功能产品功能:(1)可以通过热释电红外探测器感应是否有人,将此信号传给单片机,单片机来控制灯的亮灭。(2)可以实现根据人数的多少进行亮度的调整和区域照明范围的改变,实现资源利用的极大化。三、产品特色1、恒流驱动电路和单片机PWM调光的设计的应用2、利用单片机作为主控芯片,控制简单、易操作、维修成本低。3、利用稳压源为系统供电。通过热释电红外探测器采集数据监测移动物体和光亮度的设计,无线模块实现全区域内的数据传输。4、采用大功率LED恒流驱动方案,并利用可调光芯片对LED灯实行调光;同时利用脉宽调制技术控制舵机,使得LED射灯在两个自由度(各180°)上自由旋转,自动锁定空间的5个位置实现照明,同时可以通过手动遥控器进一步对系统进行控制.自由选择照明方式.四、产品的系统构成以及应用领域产品总体框图如下图所示:产品总体框图恒流驱动电路和单片机PWM调光的设计选用贴片的STC89C52RC单片机作为主控制芯片,大大地节省了驱动电路的体积。电源方面采用220V转9V变压器.再通过稳压芯片LM7805和一些滤波电容等器件做成。本设计LED光源采用相互并联方式,共由5只1W高亮度白光LED灯珠组成;每只LED灯珠的压降约3.1V,工作电流约20mA。由白光LED的正向伏安特性可知,当LED端电压超过其正向导通电压后,较小的电relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometryp