基于PLC的智能灌溉系统设计

摘 要

我国农业种植面积广大，而且一直都是农民凭借经验进行人工灌溉，故用于灌溉的水资源消耗一直很大。随着近几年环境的恶化，大部分地区的小河、水井等都已经干枯，所以提高水资源的利用率、加快转变农业的发展方式迫在眉睫。国家也一直在号召农业现代化，随着国家政策的推出，越来越多的技术被逐渐的应用在农业上，比如智能控制、物联网技术、云计算等。为了减轻劳动强度，保陌农业的可靠性、安全性，降低生产成本，提高产品的运行效率及经济效益是农业生成所必须面临的重大问题。随着我国国民经济的快速发展和科学技术的不断进步，越来越多的农户对智能灌溉系统提出了更离的要求，更加关注智能灌溉系统的工作效率和安全性能。针对目前的形式，本次设计了一套基于PLC 的智能灌溉系统。

本次设计在基于MCGS与PLC的控制思想上，来对智能灌溉系统进行研究与设计。本次设计对可编程逻辑控制器（PLC）进行了介绍，确定了使用西门子PLC的型号，用来作为智能灌溉系统的下位机；确定PLC的通信方式，并对智能灌溉系统相关控制进行编程实现。对MCGS组态软件进行了介绍，确定MCGS的型号，用来作为人机界面的触摸屏；确定了上位机与PLC通信方式；使用预装的MCGS组态软件来设计智能灌溉系统的控制界面。为了了解所设计的控制系统在实际应用状态下的控制效果，选择了通过实验来进行测试，并对非正常情况实行自动报警和自动保护，实现企业的机电一体化，提高企业的生产效率。

关键词：智能灌溉；MCGS；PLC；控制系统

Abstract

China's agricultural planting area is large, and farmers have been relying on experience to carry out artificial irrigation, so the consumption of water resources for irrigation has been high. With the deterioration of the environment in recent years, rivers and Wells in most areas have dried up, so it is urgent to improve the utilization of water resources and speed up the transformation of agricultural development mode. The country has also been calling for agricultural modernization. With the launch of national policies, more and more technologies have been gradually applied in agriculture, such as intelligent control, Internet of Things technology, cloud computing and so on. In order to reduce labor intensity, ensure the reliability and safety of agriculture, reduce production costs, and improve the operation efficiency and economic benefits of products, agriculture must face major problems. With the rapid development of China's national economy and the continuous progress of science and technology, more and more farmers have put forward more requirements for intelligent irrigation system, paying more attention to the efficiency and safety performance of intelligent irrigation system. In view of the current form, the design of a set of intelligent irrigation system based on PLC.

This design is based on the control idea of MCGS and PLC to study and design the intelligent irrigation system. The design of programmable logic controller (PLC) was introduced, determined the use of Siemens PLC model, used as the lower machine of intelligent irrigation system; Determine the communication mode of PLC, and implement the programming of intelligent irrigation system. The MCGS configuration software is introduced, and the model of MCGS is determined, which can be used as the touch screen of man-machine interface. The communication mode between PC and PLC is determined. Use preinstalled MCGS configuration software to design the monitoring interface of intelligent irrigation system. In order to understand the monitoring effect of the designed monitoring system in the actual application state, we choose to test through experiments, and implement automatic alarm and automatic protection for abnormal situations, realize the electromechanical integration of enterprises and improve the production efficiency of enterprises.

Key words: Intelligent irrigation; The MCGS. PLC; Control system

目录

摘            要... 1

第一章 绪论... 6

1.1  研究课题背景... 6

1.2  国内外发展现状... 7

1.3  PLC工业应用现状... 9

1.4  MCGS软件组态... 10

1.5  选题来源及意义... 12

1.6  本课题的研究内容及章节安排... 12

第二章  智能灌溉系统系统结构与分析... 14

2.1  智能灌溉系统结构组成... 14

2.2  智能灌溉系统... 15

2.3  小车行走机构... 16

2.4  大车运行机构... 16

第三章  智能灌溉系统设计... 18

3.1  智能灌溉系统的系统架构... 18

3.2  智能灌溉系统变频调速设计... 19

3.3  智能灌溉系统传感器方案... 20

3.3.1 智能灌溉系统电力参数检测传感器... 20

3.3.2 智能灌溉系统电动机转速检测传感传感器... 20

3.3.3 吊重物体运动速度检测传感器... 21

3.3.4 吊重物体起吊高度检测传感器... 21

3.3.5 轨道吊起吊载荷检测传感器... 21

第四章  基于PLC的控制系统设计... 23

4.1  PLC的工作原理... 23

4.2  可编程控制器（PLC）的选型... 23

4.2.1  PLC机型选择的考虑因素... 23

4.2.2  西门子PLC的相关介绍... 24

4.2.3  PLC的选型... 25

4.3  PLC与变频器的通信... 25

4.4  系统主控程序设计... 27

4.4.1  I/O地址分配及PLC配置... 28

4.4.2  PLC程序设计... 29

第五章  上位机基于MCGS的胜控系统设计... 33

5.1  MCGS组态软件... 33

5.2  触摸屏简介... 34

5.3  上位机与S7-200PLC的通信... 35

5.4  实验测试... 36

5.4.1  实验目的... 36

5.4.2  实验原理... 36

第六章 结束语... 38

参考文献... 39

致    谢... 41

完整论文点击如下链接下载：

https://download.csdn.net/download/weixin_45905610/88485448

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