基于PLC的教室智能照明系统设计
摘要
本文阐述了教室智能照明的控制方法以及PLC在教室智能照明控制系统中的应用,并对西门子S7-200系列PLC进行了详细的介绍,然后在此基础上,提出了以S7-200系列PLC为主要器件设计教室智能照明控制系统的方法,其基本原理是采用西门子公司的S7-200系列的PLC作为核心控制部件,采用热释红外人体传感器检测人体的存在,采用光敏三极管构成的电路检测环境光的强度;根据教室合理开灯的条件,系统通过对人体的存在信号和环境光信号的识别和智能判断,完成对教室照明回路的智能控制,避免了教室用电的大量浪费。最后,提出了系统的梯形图程序设计,并进行了仿真。
本设计具有经济性好、可靠性高、实用性强等优点,可以满足各院校教室灯光照明控制的要求,很大程度的达到节能目的。
关键词:教室智能照明;PLC;梯形图程序
I
nterior I
ntellige
nt Lighti
ng Desig
n based o
n PLC Abstract This paper describes the classroom i
ntellige
nt lighti
ng co
ntrol method a
nd PLC applicatio
ns i
n the classroom i
ntellige
nt lighti
ng co
ntrol system, a detailed i
ntroductio
n of Sieme
ns S7-200 series PLC. The
n, o
n this basis, S7-200 series PLC as the mai
n device desig
n classroom i
ntellige
nt lighti
ng co
ntrol system, the basic pri
nciple is the use of Sieme
ns S7-200 series PLC as the core co
ntrol u
nit, the use of i
nfrared huma
n body the se
nsor detects the prese
nce of a huma
n body, usi
ng the phototra
nsistor circuit co
nstituted detected ambie
nt light i
nte
nsity; u
nder classroom reaso
nably lights co
nditio
ns, through the ide
ntificatio
n a
nd smart A
nalyzi
ng huma
n prese
nce sig
nal a
nd ambie
nt light sig
nal, the completio
n of the classroom lighti
ng circuit smart co
ntrol, to avoidwasti
ng a lot of electricity classroom. Fi
nally, it proposed the desig
n of ladder program, a
nd simulatio
n is carried out. This desig
n has a good eco
nomy, high reliability, a
nd practical adva
ntages to meet the requireme
nts of the i
nstitutio
ns classroom lighti
ng co
ntrol, to a large exte
nt, to save e
nergy. Keywords:Classroom i
ntellige
nt lighti
ng;PLC;Ladder progr 目录 摘要I Abstract II 1.绪论5 1.1本课题研究的目的和意义5 1.2国内外研究状况和相关成果5 1.3本课题研究的主要内容6 1.4本课题需要解决的问题7 2.系统控制方案的设计8 2.1系统设计的可行性分析8 2.1.1设计方案的可行性8 2.1.2知识能力的可行性8 2.1.3实验条件的可行性8 2.2系统控制方案的分析8 2.3分区和分时控制方案的构想9 2.4系统的功能组成10 3.硬件系统设计11 3.1选择PLC类型11 3.1.1 PLC的定义11 3.1.2 PLC的基本组成及各部分作用11 3.1.3.PLC的特点14 3.1.4 S7-200PLC 15 3.2数据采集电路19 3.3环境光采集电路19 3.4人体存在传感器的工作原理20 3.5 PLC外围连线图21 4软件设计23 4.1程序流程图23 4.2 STEP7-Micro/WIN V4.0编程软件24 4.2.1 STEP7-Micro/WIN V4.0编程软件主界面及基本组成24 4.2.2梯形图的编写25 4.3输入输出地址25 4.4梯形图程序设计26 5系统仿真29 5.1 S7-200 V4.0的仿真软件29 5.2仿真测试30 结论36 参考文献37 附录A:程序清单39 致谢41
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nterior I
ntellige
nt Lighti
ng Desig
n based o
n PLC Abstract This paper describes the classroom i
ntellige
nt lighti
ng co
ntrol method a
nd PLC applicatio
ns i
n the classroom i
ntellige
nt lighti
ng co
ntrol system, a detailed i
ntroductio
n of Sieme
ns S7-200 series PLC. The
n, o
n this basis, S7-200 series PLC as the mai
n device desig
n classroom i
ntellige
nt lighti
ng co
ntrol system, the basic pri
nciple is the use of Sieme
ns S7-200 series PLC as the core co
ntrol u
nit, the use of i
nfrared huma
n body the se
nsor detects the prese
nce of a huma
n body, usi
ng the phototra
nsistor circuit co
nstituted detected ambie
nt light i
nte
nsity; u
nder classroom reaso
nably lights co
nditio
ns, through the ide
ntificatio
n a
nd smart A
nalyzi
ng huma
n prese
nce sig
nal a
nd ambie
nt light sig
nal, the completio
n of the classroom lighti
ng circuit smart co
ntrol, to avoidwasti
ng a lot of electricity classroom. Fi
nally, it proposed the desig
n of ladder program, a
nd simulatio
n is carried out. This desig
n has a good eco
nomy, high reliability, a
nd practical adva
ntages to meet the requireme
nts of the i
nstitutio
ns classroom lighti
ng co
ntrol, to a large exte
nt, to save e
nergy. Keywords:Classroom i
ntellige
nt lighti
ng;PLC;Ladder progr 目录 摘要I Abstract II 1.绪论5 1.1本课题研究的目的和意义5 1.2国内外研究状况和相关成果5 1.3本课题研究的主要内容6 1.4本课题需要解决的问题7 2.系统控制方案的设计8 2.1系统设计的可行性分析8 2.1.1设计方案的可行性8 2.1.2知识能力的可行性8 2.1.3实验条件的可行性8 2.2系统控制方案的分析8 2.3分区和分时控制方案的构想9 2.4系统的功能组成10 3.硬件系统设计11 3.1选择PLC类型11 3.1.1 PLC的定义11 3.1.2 PLC的基本组成及各部分作用11 3.1.3.PLC的特点14 3.1.4 S7-200PLC 15 3.2数据采集电路19 3.3环境光采集电路19 3.4人体存在传感器的工作原理20 3.5 PLC外围连线图21 4软件设计23 4.1程序流程图23 4.2 STEP7-Micro/WIN V4.0编程软件24 4.2.1 STEP7-Micro/WIN V4.0编程软件主界面及基本组成24 4.2.2梯形图的编写25 4.3输入输出地址25 4.4梯形图程序设计26 5系统仿真29 5.1 S7-200 V4.0的仿真软件29 5.2仿真测试30 结论36 参考文献37 附录A:程序清单39 致谢41
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