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基于PLC的消防报警系统设计摘要火灾对国民经济和人民生命造成了巨大危害，但国外发达国家对火灾的预防及应对上我国和国外发达国家仍存在较大差距，因此，设计出一种可靠高效的消防报警控制系统是非常迫切的。本设计完成了利用主要核心控制部件西门子SIMATICS7-300型PLC对消防报警控制系统的设计。首先，根据具体的控制对象选择合适的S7-300系列CPU，这是控制系统的核心部件，在选择了一些火灾探测器的类型，探测器的选择好坏关系到报警及其它后续系列动作的关键。其次，选择与S7-300相匹配的扩展模块，如数字I/O模块、模拟I/O模块、电源模块等。最后，完成了控制系统的整体设计，达到了控制目标。关键词：PLC；控制系统；消防报警PLCBasedFireAlarmSystemDesignABSTRACTFireonthenationaleconomyandpeople'slivescausedgreatharm,butdevelopedcountriesforfirepreventionandtheresponsetoourcountryandabroad,thereisstillawidegapbetweenthedevelopedcountries,therefore,todesignareliableandefficientfirealarmcontrolsystemisveryurgentthe.ThemainadvantageofthisdesigniscompletedthecorecontrolunitSiemensSIMATICS7-300PLCtypeoffirealarmcontrolsystemdesign.Keyfirst,dependingonthecontrolobjecttoselecttheappropriateS7-300seriesCPU,whichisthecorecomponentofthecontrolsystem,thechoiceofsometypeoffiredetector,thedetectoralarmrelatedtothechoiceofgoodorbad,andotherfollow-upactionseries.Second,selecttheS7-300tomatchtheexpansionmodules,suchasdigitalI/Omodules,analogI/Omodules,powermodules.Finally,tocompletetheoveralldesignofthecontrolsystemtoachievethecontrolobjectives.KeyWords：ProgramableLogicControl；ControlSystem；TheFireFightReportToThePolice目录第一章绪论..........................................................................................................................11.1课题研究的目的和意义...............................................................................................11.2课题背景.......................................................................................................................11.3国内外消防报警系统的现状及发展情况...................................................................11.3.1火灾消防报警系统发展历程............................................................................11.3.2消防火灾报警系统在国外的发展情况............................................................21.3.3消防火灾报警系统在国内的发展情况............................................................21.4消防火灾报警系统的分类...........................................................................................3第二章系统的传感器的选型及其特性.......................................................................42.1烟感器、液位传感器...................................................................................................42.2感烟器的选择...............................................................................................................42.3液位传感器的选择.......................................................................................................5第三章系统的硬件设计...................................................................................................63.1消防报警系统的要求、原理图设计...........................................................................63.1.1控制要求............................................................................................................63.1.2消防报警系统工作原理图................................................................................63.2PLC相关模块的选择....................................................................................................73.2.1PLC的CPU模块的选择....................................................................................83.2.2电源模块的选择...............................................................................................83.2.3变速频率调节器...............................................................................................83.2.4系统的硬件列表...............................................................................................83.3系统的电气回路图.....................................................................................................173.3.1消防水泵单相交流电机电气回路图.............................................................173.3.2排烟风扇单相交流电机的电气回路图.........................................................183.3.3防火卷帘门三相交流电机的电气回路图.....................................................193.3.4储水水箱的PID控制的三相交流电机的电气回路图.................................203.3.5系统输入输出点：.........................................................................................21第四章控制系统的软件设计.......................................................................................254.1系统的软件程序流程.................................................................................................254.2STEP7编程软件..........................................................................................................264.2.1STEP7介绍......................................................................................................264.2.2STEP7编程的各个步骤..................................................................................264.2.4组合硬件和软件.............................................................................................274.3STEP7硬件组态..........................................................................................................284.3.1消防报警控制系统的PLC模块在STEP中的选择.......................................294.3.2控制主程序.....................................................................................................294.4用组态王监控软件组态监控消防控制系统.............................................................354.4.1组态王简介.....