基于PLC的矿井提升机后备保护系统设计-毕业设计论文

大连民族学院本科毕业设计（论文）基于PLC的矿井提升机后备保护系统设计学院（系）：机电信息工程学院专业：电子信息工程学生姓名：赵野学号：06021629指导教师：李绍民评阅教师：完成日期：2010-6-4大连民族学院基于PLC的矿井提升机后备保护系统设计-I-摘要矿井提升机是矿山的大型固定设备之一。主要提升煤炭、矸石、升降人员、下放物料和设备等，它连通矿井上、下的枢纽。它能否正常运行，对矿井的煤炭生产及井下矿工的生命安全起着重要的作用。因此，矿井提升机要求配备良好的控制设备和保护装置。通过分析监控系统的特点及需求，采用西门子公司的S7-200系列的最高级型号CPU226PLC作为系统的主控装置，还采用了与处理器配套的扩展模块。系统主要实现功能为：通过编码器进行行程与速度的监测；为提升机整个运行过程提供超速保护；提供过卷、松绳、提升错向等多个保护；可以实现误差校正；在安全制动时可以实现恒减速制动文中着重对综合后备保护装置的硬件和软件设计进行了分析和说明，其中软件设计是该装置的核心部分。该套基于PLC技术的矿井提升机综合后备保护装置，经实验证明完全达到了设计的要求，且操作界面直观而友善，扩展性强，为矿井提升机的安全有效运行提供了可靠的保障。关键词：PLC提升机后备保护基于PLC的矿井提升机后备保护系统设计-II-TheDesignoftheBackupProtectiveSystemofMineHoistBasedonPLCAbstractMinehoisterisoneofthebigequipment．Itmainlyliftscoalmineralliftspeopleandputsmatterandequipment．Itconnectsthecrossingofmine．Ifitcanworkwell，Itisimportanttotheproducingofcoalandthesafetyofworkers．Soitasksgoodequipmentandprotectingequipment.Thehardcoreofthisequipmentisthedesignofsoftware．Thispaperfirstintroducedthecompositionoftheminehoistandtherequirementsoftheelectriccontrolsystem.Thenweanalyzethecharacteristicsandneedsofminehoistmonitoringsystem.BasedontherequirementsoftheprojectwechooseCPU226PLCwhichisthemostseniormodelofSiemensS7-200seriesasthemainsystemcontroldevice,andselecttheextendedmoduleswhichsupporttheprocessor'sexpansion.Aimingatthedeficiencyofmonitorstrategyandprotectingfunctionofdomesticmonitoringdevices,thissystemaddssomenewprotectionfunctionsandcreatesanewmethodbychangingthepositionofSpeed-ReducingPointtocontrolthehoister'sspeed.Atthesametime,combiningthepowerfulfunctionsoftheprocessoraswellastheconveniencetodirectlycollectfieldsignal.ThisintegratedbackupprotectiveequipmentforPLCwhichisbasedonvirtualinstrumenthasbeenprovedbyexperimenttoachievetherequirementofdesign.Theequipment,whichhasaclearandamicableinterfaceandgreatexpansibility,providestheoperationofminehoisterwithsafeguard．Keyword:PLChoisterbackup基于PLC的矿井提升机后备保护系统设计-III-目录摘要.....................................................................................................................................IAbstract.....................................................................................................................................II1.系统方案设计....................................................................................................................-1-1.1方案背景................................................................................................................-1-1.2方案论证................................................................................................................-1-1.3课题主要内容........................................................................................................-2-1.4课题研究的意义....................................................................................................-2-1.5矿井提升机及后备保护系统概述........................................................................-2-1.5.1矿井提升系统的分类.................................................................................-2-1.5.2矿井提升机系统的构成.............................................................................-2-1.5.3后备保护.....................................................................................................-3-2．后备保护系统硬件设计.........................................................................................-4-2.1总体方案................................................................................................................-4-2.2可编程控制器CPU226.........................................................................................-4-2.3I/O模块...................................................................................................................-6-2.3.1数字模块.....................................................................................................-6-2.3.2模拟模块.....................................................................................................-6-2.4传感器....................................................................................................................-6-2.4.1光电编码器.................................................................................................-6-2.4.2光电编码器在本系统中的应用.................................................................-7-2.4.3PLC高速计数器原理..................................................................................-7-2.4.4高速计数器在提升机速度检测中的应用.................................................-8-2.5触摸屏....................................................................................................................-9-2.6液压油压力检测..................................................................................................-10-2.7PLC对模拟信号的处理.......................................................................................-10-2.7.1模拟量输入模块.......................................................................................-10-2.7.2PLC对液压油压力的测量........................................................................-11-2.7.3PLC对电动机电枢电流的测量................................................................-11-2.8PLC控制系统硬件连接..............