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摘要：随着市场经济的发展，人们对水的质量和供水系统的可靠性要求日益提高；再者当前能源紧张，利用先进的自动控制技术和通讯技术，设计出性能高又节能、能适应各种不同领域的恒压供水系统成为必然的发展趋势54125
本篇论文通过分析观察恒压供水的原理和系统结构，提出了不同的控制方案，通过比较和研究，以变频器和PLC来实现恒压供水和数据的传输，再用PID来设计系统中的恒压控制。最后对系统中的硬软件设计进行了细致的介绍。本文设计并实现了数据传输的远程网络巡回监控系统。讲述了系统的整体设计与软件的运行和实现，并对系统所采取了的措施进行阐述。
本论文的恒压供水系统因为运行稳定可靠和节能性良好等优点而在国内很多实际的供水控制系统中得到了应用，大幅改善了供水的质量，有着明显的社会经济效益。
毕业论文关键字：变频调速，恒压供水；PLC；监控系统
Abstract：With the rapid development of socialistic marketing economy,there is a growing demand for better quality of water supply and higher reliability of supply system. In addition ,considering the current common energy crisis, achieving the scheme of automatingthe water supply system. So it is an inevitable tendency to design and create an energy-savingconstant-pressure water supply system of excellent performance with the help of advancedtechniques of automation,monitor-control system; and communication. Meanwhile, the System can also adapt to various water Supply regions.
This paper analyzes the structure of VF speed regulating constant-pressure water supply,and proposes several control methods.By careful study and comparison, PLC and inverter's method fits water supply system and datatransmission very well. Finally the paper shows the design of constant pressure supply water controller according to PID data and detailed introduction of its software and hardware.In this paper,the author designs and realizes the remote monitor and control system through MCGS, and then illustrates its general design, software implement and the measures of preventable disturbance in details.
The system, which has initially been completed with reliable performance and excellent energy-saving effect, proves to possess high reliability and real-time quality. The system can not only remarkably improve the quality of water supply, but also economize on labor, which will surely bring us both economic and social benefits.
Key Words: VF speed, constant pressure water supply; PLC; MCGS; monitor and control- system
目录
1 绪论 2
1.1供水系统要求及方式 2
1.2 设计任务和要求 3
2 恒压供水系统 3
2.1变频恒压供水系统 3
2.2论文研究的对象 4
2.3 供水的控制方式选择 4
2.4. 变频恒压供水的系统构成及工作原理 5
2.5 主电路接线图 6
3 设计方案 7
3.1 可编程控制器 7
3.2 变频器 9
3.3 PID调节器 13
3.4压力传感器的接线图 14
3.5原件表 14
4 PLC控制及编程 16
4.1 PLC控制 16
4.2编程及介绍
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