A sort of city water supply automatic control system based on PLC was introduced, and the principle of design and composition of supervisory system based on IFIX were described.

介绍了一种基于PLC的城市供水自动控制系统，给出了该系统的设计原理及组成，描述了基于IFIX的上位监控系统。

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The water supply system has the advantages of good energy-saving effect, high reliability and full automatic control.

该供水系统具有节能效果好、可靠性高，实现了全自动化控制等特点。

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This paper discussed net pressure of water supply, energy consumption and pump performance of different pressure control point in automatic regulation device of constant pressure water supply system.

分析了自动恒压控制给水系统中，不同控制点形式下的管网压力，系统能耗及水泵工况，并得出一些结论。

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