随着数字技术和网络技术的发展，公共照明数字化和网络化已经成为一种必然趋势。节约能源、保证灯具寿命、提高照明管理水平、美化城市夜量和保证城市夜间出行安全等，已经成为对公共照明系统的一项基本要求。公共照明系统广泛采用高压钠灯或金属卤化物灯传统照明系统经常采用电感镇流器，本文将介绍基于PLC的路灯控制系统。本文设计基于PLC的路灯监控系统根据时间的变化，控制路灯的明亮程度。同时考虑到不同的季节天气等的变化的实际情况，以亮度检测控制辅助，达到更合理的目的。关键词：PLC，亮度控制，定时控制StreetlightmonitoringsysteminthePLC-baseddesignAbstractAlongwitharithmeticfiguretechniquewithtechnicaldevelopmentinnetwork,thepubliclightingarithmeticfigureturntoturntohavebecomeakindofinevitabletrendwiththenetwork.Economyenergy,guaranteethelamplifespan,increaseilluminatetomanagethelevel,beautifythecitynightmeasureswithguaranteenighttimeincityoutlinesafetyetc.,havebecometoabasicrequestofthepubliclightingsystem.Theextensiveadoptioninsysteminpubliclightinghighpressurelightmetalsturnsthethinglighttraditionilluminatesthesystemtousuallyadopttheelectricityfeelsthetownflowsthemachine,illuminatinglamptheadoptionunifyswitchcontrolcase.ThisarticlewillintroducethestreetlampcontrolsystembasedonPLC.Inthispaper,thedesignbasedonPLCstreetlampmonitoringsystemaccordingtothetimechange,controlthestreetlampbrightdegree.Takingintoaccountthedifferentseasonalweatherchangesintheactualsituation,tobrightnessdetectioncontrolauxiliary,achievemorereasonablepurpose.Keywords:PLCbrightnesscontroltimingcontrol目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc324414966"1绪论1HYPERLINK\l"_Toc324414967"1.1课题背景1HYPERLINK\l"_Toc324414968"1.2国内外的发展现状2HYPERLINK\l"_Toc324414969"1.3节能控制系统2HYPERLINK\l"_Toc324414970"2控制系统设计方案3HYPERLINK\l"_Toc324414971"2.1PLC介绍3HYPERLINK\l"_Toc324414972"2.2高压钠灯介绍4HYPERLINK\l"_Toc324414973"2.3控制系统方案5HYPERLINK\l"_Toc324414974"2.3.1方案论证5HYPERLINK\l"_Toc324414975"2.3.2设计方案5HYPERLINK\l"_Toc324414976"2.3.3结构框图6HYPERLINK\l"_Toc324414977"3硬件电路的设计7HYPERLINK\l"_Toc324414978"3.1西门子S7-200PLC的介绍7HYPERLINK\l"_Toc324414979"3.2亮度检测装置8HYPERLINK\l"_Toc324414980"3.3时间调整电路9HYPERLINK\l"_Toc324414981"3.4时间显示电路9HYPERLINK\l"_Toc324414982"3.5电流检测电路PAGEREF_Toc324414982\h11HYPERLINK\l"_Toc324414983"3.6