燃气热水器控制器设计.doc

武汉工程大学本科毕业设计（论文） PAGE PAGE I 摘 要 目前，节能减排作为环保的一大主题，在日常生活中，人们都希望在尽可能的减少支出的同时也能降低对环境的污染。以前，大部分中小型宾馆都是使用锅炉加热，这种方法不仅耗时，其排放的气体对环境还造成很大的破坏。 70年代中期以后，PLC已广泛地使用微处理器作为中央处理器，输入输出模块和外围电路也都采用了中、大规模甚至超大规模的集成电路，这时的PLC已不再是仅有逻辑(Logic)判断功能，还同时具有数据处理、PID调节和数据通信功能。 本文详细的介绍了PLC控制方案在燃气热水系统中的应用，以清洁能源天然气作为燃料，通过PLC的控制，实现了燃气热水系统的自动化。同时，将寿命均衡控制运用到本系统中，增加了泵的使用寿命。 关键词：燃气热水系统 PLC 寿命均衡控制 Abstract At present, the energy conservation and emission reduction as a major theme of environmental protection, in daily life, people are hoping to reduce spending as much as possible of also can reduce pollution to the environment. Previously, most of the small and medium-sized hotels are using the boiler heating, this method not only, time-consuming, and its emissions of gases on the environment also caused great destruction. Since the mid 70 s, PLC already widely used microprocessors as the central processor, input/output module and peripheral circuit are adopted, and large-scale even in large scale integrated circuit, then the PLC is no longer only Logic (Logic) to judge functions, but also at the same time a data processing, PID regulation and data communication function. This article detailed the PLC control scheme of shaoxing in gas hot water system, the application of natural gas as fuel to clean energy, through the PLC control, realized the automation of gas hot water system. At the same time, will life balance control applied to the system, and increase the service life of the pump. Keywords: Gas hot water system PLC Life balance control 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc326665437 摘 要 PAGEREF _Toc326665437 \h I HYPERLINK \l _Toc326665438 Abstract PAGEREF _Toc326665438 \h II HYPERLINK \l _Toc326665439 第一章 概述 PAGEREF _Toc326665439 \h 1 HYPERLINK \l _Toc326665440 1.1 课题背景 PAGEREF _Toc326665440 \h 1 HYPERLINK \l _Toc326665441 1.2 燃气热水系统发展现状 PAGEREF _Toc326665441 \h 1 HYPERLINK \l _Toc326665442 1.3 设计的基本要求 PAGEREF _Toc326665442 \h 4 HYPERLINK \l _Toc32666544