基于基于 PLCPLC 的矿井提升机后备保护系统设计的矿井提升机后备保护系统设计摘 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CPU226 PLC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：关键词：PLCPLC 提升机提升机 后备保护后备保护 The Design of the Backup Protective System of Mine Hoist Based on PLCAbstractMine hoister is one of the big equipmentIt mainly lifts coal mineral lifts people and puts matter and equipmentIt connects the crossing of mine If it can work well ，It is importan t to the producing of coal and the safety of workersSo it asks good equipment and protecting equipment.The hard core of this equipment is the design of softwareThis paper first introduced the composition of the mine hoist and the requirements of the electric control system.Then we analyze the characteristics and needs of mine hoist monitoring system.Based on the requirements of the project we choose CPU226 PLC which is the most senior model of Siemens S7-200 series as the main system control device,and select the extended modules which support the processors expansion.Aiming at the deficiency of monitor strategy and protecting function of domestic monitoring devices,this system adds some new protection functions and creates a new method by changing the position of Speed- Reducing Point to control the hoisters speed.At the same time,combining the powerful functions of the processor as well as the convenience to directly collect field signal. This integrated backup protective equipment for PLC which is based on virtual instrument has been proved by experiment to achieve the requirement of design.The equipment,which has a clear and amicable interface and great expansibility,provides the operation ofmine hoister with safeguardKeyword: PLC hoister backup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 -2.3 I/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.- 7 -2.4.1 光电编码器.- 7 -2.4.2 光电编码器在本系统中的应用.- 7 -2.4.3 PLC 高速计数器原理.- 8 -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 -2.7 PLC 对模拟信号的处理.- 10 -2.7.1 模拟量输入模块.