【毕业论文】基于PLC大棚温湿自动控制系统.docx毕业论文中文摘要 基于PIC大棚温湿自动控制系统 摘要: 讨论了在温室控制中引入PLC技术构成分布式控制系统的方 法,详细介绍了系统的特点、组成、硬件设计、实时动态监控系统 及通信问题。分布式的控制结构,使各子系统相对独立,管理与控制 功能分开,易于实现群控化管理,提高了系统的可靠性,且易于扩 展。系统成本低廉,性能稳定,通用性好,符合中国国情,具有广泛的 应用前景。 关键词:温室大棚;PLC;集散控制;温湿控制 毕业论文外文摘要 Title Design the agriculture temperature and humidity glasshouse control system with the programmable logic controller Abstract: The method of distributed control system composed by PLC technology in glasshouse control is introduced in this paper. It gives a detailed introduction to the characteristics, constitutes,software and hardware design , real ・ time dynamic surveillance and communication of the distributed control structure makes all sub ・ systems independent relatively , separates the management and control function , and easy to realize the swarm control management, greatly improves the reliability and expandable of the system. It has the characacters of low cost , stable function , wide adoptability , etc , which matches the conditions of China and has charming application foreground. Keywords: Glasshouse agriculture; PLC; Distributed control system;Swarm control management 目录 引言 1 一研究背景 1 2 2系统概述 2 1系统设计任务 2 2系统总体设计 2 3系统工作原理 7 4温湿度传感器 8 3 系统硬件设计 9 1 PLC 简介 9 2总线简介 9 3电磁阀的简介与安装 10 4湿度传感器 13 3. 5温度传感器 14 3. 6喷灌系统的设计 15 结论 21 参考文献 22 致谢 24 图 1 25 1引言