The paper introduces the design and research of network electric control system of hoist based on PROFIBUS field-bus, emphatically analyzes its software structure.

本文基于P ROFI BUS 现场总线，提出对提升机电控系统进行网络化的设计和研究，着重分析了系统软件结构。

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The improvement plan, work principles and reform result on electric control system of main shaft hoist in Linhuan Coal Mine are introduced, and the result is fine.

介绍了临涣煤矿主井提升机电控系统的改造方案、工作原理及改造效果，经过改造后的电控系统效果良好。

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This paper briefly introduces the electric control system of mine hoist, such as electric transmission way, speed giving circuit, fault detection etc.

文中对矿井提升机的电控系统，诸如电气传动方案、速度给定电路、故障监测及安全回路等问题进行了简要介绍。

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