锅炉运行状态监控与管理系统设计-机械电子工程专业论文.docxVIP

兰州 兰州交通大学硕士学位论文 锅炉 锅炉运行状态监控与管理系统设计 万方数据 万方数据 万方数据 万方数据 摘 要 随着我国经济的发展，资源和环境矛盾日趋尖锐，作为供热系统重要能源转换设备 的热水锅炉得到了人们的广泛关注。本文针对某 集团公 司锅炉 型号多，地 点分散，各 锅 炉 工作 的 工作 环境 复 杂， 研发 基 于多 地点 、多 型 号热 水锅 炉 特点 的常 压 锅炉 运 行 自动监 测报警 系统与 锅炉运 行状态 的远程管 理系统 是十分 必要的 。本论 文 主要内 容如下： 1．建立了热水锅炉监控与管理系统的系统框架。以电锅炉回水温度、出水温度、 流量、压力、以及锅炉液位等模拟量和相应的开关量作为监控参数，利用组态王软件设 计了上位机人机界面，以西门子 S7-200PLC 作为下位机实现了数据的采集与处理，其中 下位机程序利用 STEP7-MicroWIN 软件完成。 2．完成了上下位机通信、数据存储、查询等子系统的设计。下位机通过 MPI 协议 与 OPC 服务器建立数据通道，将采集到的数据实时上传 OPC 服务器，上位机通过 OPC 服务器读入数据，并通过监控界面实时显示各被监控参数的变化情况，对异常情况进行 报警，从而实现了组态王与 PLC 之间的通信。此外，由于组态王默认的数据库为 Access， 考虑到 Microsoft Access 数据库最多可以存储 2G 的内容，为了系统的后续升级以及扩展， 选用了 SQL Server 数据库对数据进行查询、备份和保存。 3．针对多个锅炉状态同时监控时的异地远程监控问题，阐述了组态王的网络发布 以及进行远程监控系统。 关键词：PLC；OPC；上位机；热水锅炉；SQL Server 论文类型：应用技术研究 - I - Abstract As the economic development of China, the contradiction between resources and environment is more and more serious. This thesis considers a monitoring system of 19 hot-water boilers, which not only located in different regions and had the various working environment, but also produced by different manufacturers that resulted in various types of them. The developed system will establish an approach to monitor those hot-water boilers such that their state can be managed by remote style, and achieves the real-time monitor for the key analog and digital variables. The main contents are as follows. The framework is established for the monitoring and management of hot-water boiler. By taken the temperature, flux and pressure of water inlet and outlet boiler as monitoring parameters, the man machine interface is designed by kingview and the data is gathered and processing by Siemens S7-200PLC.The slave computer is developed by STEP7-MicroWIN. The sub-system such as communication, data storage and inquiries are designed. The communication between slave computer and OPC Server is achieved by MPI protocols. And the collected data is uploaded to the OPC Server in real-time. The master computer read the data from OPC server, di