基于PLC的智能火灾报警控制系统摘要本系统设计的智能火灾报警控制系统主要由可编程控制器、探测器、执行机构等组成。可编程控制器作为控制系统的大脑，按照工艺说明分析，对各种外部输入信号按照智能火灾报警系统的工艺分析结果及程序设计流程，完成系统各项工艺功能的实现。按照方案的选择和设备型号的选择，采用的可编程控制器为西门子S7-200系列，该可编程控制器设计小巧，功能强大，运行稳定。本系统设计首先进行工艺分析，确定该系统设计的工艺控制方案，完成系统硬件部分的型号选择计算以及总体控制方案的设计。在此基础上进行硬件分析和图纸设计，完成工艺流程图的设计以及程序的编写通过程序仿真设计以及上位机联机调试和修改，系统安全可靠、使用灵活、扩展性强、开发周期短，后期修改方便，达到本设计的工艺要求，以及为后期系统升级改造创造条件。关键词：可编程控制器；仿真设计；火灾报警AbstractTheintelligentfirealarmcontrolsystemdesignedbythissystemismainlycomposedofuppercomputer,programmablecontroller,detector,actuatorandsoon.Asthebrainofthecontrolsystem,theprogrammablelogiccontroller(PLC)completestheprocessfunctionsofthesystemaccordingtotheprocessanalysisresultsandprogramdesignprocessoftheintelligentfirealarmsystem.Thecurrentstateisdisplayedandparametersaresetbytheuppercomputersystem.Accordingtothechoiceofschemeandequipmenttype,theprogrammablecontrollerisSiemensS7-200series.Theprogrammablecontrolleriscompactindesign,powerfulinfunctionandstableinoperation.Thesystemdesignfirstcarriesontheprocessanalysis,determinestheprocesscontrolschemeofthesystemdesign,completesthemodelselectioncalculationofthehardwarepartofthesystemandthedesignoftheoverallcontrolscheme.Onthisbasis,thehardwareanalysisanddrawingdesignarecarriedout,theprocessflowchartdesignandprogrammingarecompleted,theconfigurationdesignoftheuppercomputeriscarriedout,thestatusanddataofthemonitoringsystemaremonitored,andthecurrentparametersaremodifiedaccordingtotheactualprocesstomeettherequirementsofsystemvisualization.Throughprogramsimulationdesignandon-linedebuggingandmodification,thesystemissafeandreliable,flexibleinuse,strongexpansibility,shortdevelopmentcycle,convenientinlatermodification,whichmeetsthetechnologicalrequirementsofthisdesignandcreatesconditionsforlatersystemupgradeandtransformation.Keywords:programmablecontroller;simulationdesign;firealarm目录摘要................................................................1Abstract............................................................21绪论.............................................................41.1课题研究的意义及目的........................................41.2国内外发展现状..............................................41.3课题研究的思路分析..........................................52智能火灾报警控制系统的总体设计..............................62.1工艺设计及分析..............................................62.2PLC的介绍及选型.............................................72.3传感器的选择................................................92.3.1温度传感器的选择.......................................92.3.2感烟传感器的选择......................................102.4总体设计方案的确定.........................................113智能火灾报警控制系统的硬件设计.............................123.1硬件设计的思路分析.........................................123.2主电路的设计及分析.........................................123.3PLC电路的设计及分析........................................134智能火灾报警控制系统的软件设计.............
