面向MES的车间生产过程监控系统研究

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I摘要位于上层计划管理系统与底层工业控制系统之间的制造执行系统(ManufacturingExecutionSystem,MES)是现代生产制造过程中的车间生产管理和控制的信息系统。它能够为车间管理人员实时地提供生产计划的执行情况,生产车间的物料、设备和工作人员的状态信息,从而方便了生产活动的执行和调度管理。制造执行系统帮助企业在计划层与控制之间架起了“沟通”的桥梁,填补了企业计划层和控制层间的“鸿沟”。在目前制造业市场竞争日益激烈的条件下,制造执行系统为企业提高生产信息化和自动化水平,进而提升了企业的竞争力。本文研究的课题是面向MES的车间生产过程监控系统的研究,拟采用构建于线缆企业生产车间的物联网作为制造执行系统(MES)的基础平台,通过生产车间一级的物联网实现线缆企业的生产、在生产、半成品及成品等生产信息的实时在线采集和监测,达成实时生产信息与ERP系统的无缝对接,实现线缆企业的全面的信息化管理。论文首先介绍了MES的国内外发展现状及车间生产过程监控系统发展现状。其次,本文详细阐述了MES系统的理念,分别介绍了MES的定义、MES的功能及MES的应用特点。然后,介绍了车间生产监控系统的网络组成方法,包括:车间生产监控系统特点分析;监控系统的网络设计要求;对基于现场总线(RS485、CAN、TCP)和基于无线网络(GPRS/GSM、ZigBee)的监控系统的分别说明。之后,通过物联网的关键技术以及框架需求等方面的分析,针对车间生产特点,从资源的合理运用和车间管理调度实时性出发,对物联网技术在生产监控系统的应用做了设计说明,具体有:ZigBee网络的介绍、物联网数据采集方法、生产品质数据追踪等。昀后,本文以线缆企业生产车间为研究平台,介绍了系统的功能设计,具体说明了应用层网络协议,并对MES的终端系统的软硬件设计作了说明。关键词:MES,监控系统,物联网,线缆,现场控制总线IIABSTRACTLocatedbetweentheupperprogrammanagementsystemandtheunderlyingindustrialcontrolsystems,manufacturingexecutionsystem(ManufacturingExecutionSystem,andMES)isaworkshopproductionmanagementandcontrolofinformationsystemsinthemodernmanufacturingprocess.MESisabletoprovidethemanagerswithreal-timeproductionimplementationoftheplan,thestatusinformationofmaterials,equipmentandstaffintheworkshop,thusfacilitatingtheexecutionandschedulingofproductionactivities.Manufacturingexecutionsystemstohelpbusinessessetupacommunicationbetweentheplanninglayerandcontrolthebridgetofilltheplanninglayerandcontrollayerbetweenthedivide.Manufacturinginanincreasinglycompetitivemarketconditions,manufacturingexecutionsystemsforenterprisestoimprovetheproductionofinformationandlevelofautomation,andthusenhancethecompetitivenessofenterprisestoprovideaguarantee.ThesubjectofthisstudyisinMESworkshopproductionprocessmonitoringsystem,tobebuiltonthecableproductionplantofThingsasthebasisformanufacturingexecutionsystems(MES)platform,aMatterofproductionworkshopnetworkinglinetheproductionofthecablecompanies,inreal-timeonlineacquisitionandmonitoringofproduction,semi-finishedandfinishedproducts,andproductioninformation,seamlessconnectiontoachievereal-timeproductioninformationwiththeERPsystem,cablecompaniesacomprehensiveinformationmanagement.ThepaperfirstdescribesthedevelopmentstatusoftheMESdevelopmentintheworldandtheworkshopproductionprocessmonitoringsystem.Secondly,thepaperelaboratestheconceptoftheMESsystem,introducedthedefinitionofMES,MESfunctionsandMESapplicationcharacteristics.Then,theanalysisoftheworkshopproductionofnetworkmonitoringsystem,including:workshopproductionmonitoringsystemfeaturesanalysis;monitoringnetworksystemdesignrequirements;basedonfieldbus(RS485,CAN,TCP)-basedwirelessnetworks(GPRS/GSM,ZigBeeintroduced)monitoringsystem.Andthen,throughthecriticalanalysisofthetechnologyandframeworkIIIrequirementsofThingsfortheworkshopproductionfeatures,fromtherationaluseofresourcesandworkshopschedulingreal-time,andexpoundstheInternetofThingstechnologyintheproductionmonitoringsystem,thespecific:TheintroductionoftheZigBeenetwork,theInternetofThingsdatacollectionmethods,productionandqualitydatatracking.Finally,cableproductionplantasaresearchplatform,thefunctionofthesystemdesign,specifytheapplicationlayernetworkprotocols,hardwareandsoftwaredesignandMESterminalsystemgaveanexplanation.Keywords:MES,Monitoringsystems,InternetofThings,Cable,on-sitecontrolbusIV目录第一章绪论....................................................................................................................11.1课题研究的目的和意义....................................................................................11.2国内外发展现状与趋势....................................................................................21.2.1MES的国内外发展现状..........................................................................21.2.2车间生产过程监控系统发展现状..........................................................31.3本文主要研究的内容........................................................................................4第二章MES系统模型及应用特点..............................................................................52.1MES的定义.......................................................................................................52.2MES的模型.......................................................................................................52.2.1MES的定位..............................................................................................52.2.2MES功能模型..........................................................................................72.2.3MES定位模型..........................................................................................82.3MES应用特点.................................................................................................10第三章车间生产监控系统网络组成方法..................................................................123.1车间生产监控系统概述..................................................................................123.1.1车间生产管理面临的问题.....................................................................123.1.2车间生产监控系统的基本功能.............................................................133.2车间生产监控系统总体结构.....................................................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