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1、1作为世界第一农业大国，农业生产在我国国民经济中有着举足轻重的地位。 人们对绿色农产品的需求也随着生活水平的提高日益增强，因此我国农业由粗 放式向集约式、精细式发展已经成为一种必然趋势，而设施农业作为其中的一 个重要途径，越来越受到重视。作物生长主要受温度、湿度、光照强度、CO2 浓度等环境因素的影响，建造智能温室的目的就是为了对这些环境参数进行自 动控制。 通过对温室控制对象和温室环境的特点的分析，确定了控制系统的结构和 控制方案，本文设计了以 PLC 为下位机，以装有组态王软件的 PC 机为上位机 的分布式智能温室监控系统。硬件主要包括 PLC 及其特殊功能模块、各种传感 器电路、电源和执
2、行部件，软件主要是组态王软件和三菱 PLC 编程软件 GX Works。控制系统有手动控制和自动控制两种控制方式。在自动控制模式下，下位 机 PLC 通过传感器采集环境参数，并与用户设定的环境参数上限下限比较，控 制相应执行部件启停，调节温室环境参数。在手动控制模式下，用户根据需要 控制上位机组态王手动画面的模拟开关，控制 PLC 发出开关指令控制对应执行 机构，对温室环境进行调节。上位机 PC 的组态软件与下位机 PLC 通信，完成 人机交互的功能。通过组态王实时显示下位机采集的环境参数当前值、执行部 件状态、故障报警等，同时可以进行趋势曲线查看、数据库操作等。另外用户 设定环境参数、手动自
3、动控制切换、手动控制模式下控制模拟开关也在组态王 上进行。通过系统的测试实验，智能温室监控系统基本达到了预期的设计目标，但 是还需要继续完善才能运用于实际温室。 关键词：关键词：智能温室，PLC，组态王 ABSTRACT2ABSTRACTABSTRACTAs the biggest agricultural country in the world, Chinas agricultural production Hasa pivotal position in national economy.With the improvement of living standards,demand fo
4、r green vegetables are growing,therefore our country agriculture overdevelopment extensive to intensive has become an inevitable trend,and as one of the importancy of the developing,agricultural facilities are receiving much more attention. Crop growth is mainly affected by temperature, humidity, li
5、ght intensity, carbon concentrations and other environmental factors, so the purpose of building Intelligence is to automatically control these environmental parameters.Through the analysis of controlled object and environmental quality greenhorn,we determine the structure of the control system and
6、control programs. In this paper, we design a distributed intelligent greenhouse control system,which ha slower computer- programmable logic controller and upper computer-a personal with King. Hardware mainly includes the PLC and its special function module, all kinds of sensor circuit, power supply
7、and execution unit;software maidenlinesses King and Mitsubishi PLC programming software-GX Developer.The control system has two control modes-manual control and automatic control. In the automatic control mode, lower computer-PLC collected environmental parameter sensors and compared with the minimu
8、m maximum environmental parameters which are set by the users to control the start and stop of the corresponding execution unit adjusted the parameters of greenhouse environment. In manual control mode, overcontrol analogue switch in the Glenviews manually screen according to the need，controllership
9、 PLC to give out switch order to con troll the corresponding execution immunoregulation the greenhouse environment. Upper computer communicate with computerist-PLC to complete the function of the human-computer interaction. Anticaking real-time display the current environment parameter values collec
10、ted by computerist-PLC , the states of the execution units ,alarms and so on. In the meantime,users can view the trend curves,operate report forms or Access data base Longview. Users setting the minimum maximum environmental parameters,switching manual/automatic control and controlling analogue swit
11、ch in manual control mode are also can be operated in King.Through system testing experiment,the intelligent greenhouse monitoring system achieves the expected design requirements,but it also need to continue to improve Borden to be used in practical 3greenhouse. Keywords:Keywords: Intelligent Greenhouse，Environmental parameters，Programmable Logic Controller，King摘 要.2 第一章 绪 论.6 1.1 课题研究背景.6 1.2 智能温室的国内外研究现状及发展趋势.6 1.2.1 国外研究现状.6 1.2.2 国内研究现状.7 1.3 智能温室的发展趋势.7 1.4 论文的结构和主要研究内容.8 1.4.1 论文的结构.8 1.4.2 论文主要研究内容.8 第二章 系统整体方案分析.9 2.1 温室整体概况.9 2.1.1 温室控制对象.9 2.1.2 温室整体结构
