论文编号:ZD162 论文字数:34536万,页数:46
摘要
随着当今世界科学技术的突飞猛进，电气自动化技术也日趋完善和优化，其中可编程控制器越来越广泛地应用在生产中，极大地提高了人类生活和生产的自动化程度，在社会的发展和人类的进步中起到了积极的作用。改革开放以来，我国经济建设高速发展，综合国力不断增强，国家对基础设施建设的投资力度加大，拉动了城市预拌商品混凝土的高速发展，同时，使混凝土搅拌站有了较大的发展空间。
随着许多大型的基础工程及建筑工程相继开工，建设优质的工程需要高品质的混凝土，而且随着人们环保意识得加强，为了减少噪音和污染，交通和建筑管理部门要求施工用得混凝土集中生产和管理，这样，不仅要求混凝土得配料精度高，而且要求生产速度快，因此，混凝土生产过程中搅拌设备自动控制系统日益受到人们的重视。可编程控制器（PLC）具有可靠性高、功能完善、编程简单且直观，能够有效地弥补继电器控制系统得缺陷。
本文介绍的混凝土搅拌站自动化控制系统，此系统以工控机为上位机，PLC为下位机，根据混凝土搅拌站的工艺流程，进行PLC系统的设计，并采用力控5.0组态软件，设计一组系统画面、报表、重量曲线和其它功能窗口等动静态界面。
关键词: 混凝土搅拌站；工控机；可编程逻辑控制器；组态软件
Abstract
With today''s world of science and technology advancing by leaps and bounds, electrical automation technology have become increasingly improved and optimized, including programmable controllers more widely used in production, greatly enhanced the production of human life and the degree of automation in the development of society and The progress of mankind has played a positive role. Since reform and opening up, China''s economic construction rapid development, overall national strength constantly enhance the state''s infrastructure construction investment increased, pulling the city ready-mixed concrete products to the rapid development, so that the concrete mixing stations have larger space for development .
As the basis for many large projects and construction works have started building high-quality projects need high-quality concrete, but as people in enhancing awareness of environmental protection, in order to reduce noise and pollution, transport and construction management department for the construction of concrete used on the production And management, so that not only requires a concrete batching high precision, but also for the production speed, therefore, concrete mixing equipment in the production process control systems have become an increasing people''s attention. Programmable Logic Controller (PLC) with high reliability, with perfect functions, programming is simple and intuitive, can effectively make up for deficiencies in the relay control system.
This paper describes the concrete mixing plant automation control systems, this system to IPC for the PC, PLC for the next crew, in accordance with the process of concrete mixing stations, the PLC system design and use of controlled 5.0 configuration software, design a Group screen system, statements, the weight of windows and other features, such as static and dynamic interface.
Keywords:Concrete-mixing-station；IPC；PLC；Configuration software
目 录
摘要 1
Abstract 1
1绪论 1
1.1选题背景及意义 1
1.2搅拌站国内外发展现状 1
1.3本论文的主要研究内容 2
2混凝土搅拌站概述及其总体设计方案 3
2.1混凝土搅拌站概述 3
2.1.1混凝土搅拌站的分类 3
2.1.2混凝土搅拌站的组成 6
2. 1.3混凝土搅拌装置的工艺流程 7
2.2混凝土搅拌站测控系统 8
2.2.1配料称重系统(称量系统) 9
2.2.2控制系统 10
2.3混凝土搅拌站侧控系统的总体设计 12
2.4小结 13
3混凝土搅拌站控制系统设计 13
3.1可编程控制器定义 13
3.2可编程控制器的产生及发展 14
3.3可编程控制器得基本工作原理 15
3.3.1实现控制要点 16
3.3.2实现控制过程 16
3.3.3可编程控制器实现控制的方式 17
3.4可编程控制器的选购 17
3.5可编程控制器程序设计 18
3.5.1可编程控制器程序设计思想 18
3.5.2控制算法及其流程 19
3.6工控机的选择与设计 22
3.7上位机设计 22
3.7.1组态软件介绍 22
3.7.2上位机程序设计思想 24
3.8小结 26
4 配料称重控制系统 26
4.1称重控制系统概述 26
4.1.1配料称重控制系统的组成 26
4.1.2几种主要的称重称量系统 27
4.2称重传感器的选型 29
4.2.1秤重传感器的工作环境 29
4.2.2传感器的基础 32
4.2.3传感器的选择 34
4.3小结 34
结论 35
致 谢 36
参考文献 37
外文翻译 38
