河南科技大学本科毕业设计（论文） 智能农业监测系统设计
摘 要
在科技高速发展的今天，传统的农业生产方式已经渐渐跟不上快速发展的经济需求。因此人们利用先进现代化科技创造了温室大棚、作物杂交、无土栽培、太空育种等众多现代化农业种植技术。但这些先进的农业生产方式大多数都是投入成本高，操作技术复杂，对操作人员的素质要求很高，从而难以使普通的农民用户运用上这些先进农业生产技术。
本课题意在设计一款适合普通农民大众使用智能农业监测系统，本智能农业监测系统主要应用于温室大棚农业生产。本系统主要基于嵌入式系统设计，采用ARM920T架构的S3C2440A芯片作为主控芯片，用DHT11(温湿度监测)、MH-410D5(二氧化碳传感器)、MQ-2(烟雾监测传感器)、TSL2561(光照强度传感器)等传感器作为系统的环境监测模块，用RS485串口作为系统远程通信接口，用P35触摸屏作为系统人机交互窗口。本系统的最终实现效果为能够对温室内温湿度、光照强度、CO?浓度实时监测，且能将监测数据在P35屏上以直观的形式显示出来，当其中的某项指标达到预设值时系统能立马做出信息反馈，调动其他设备及时对温室环境做出调控。最后系统还能够进行远程控制和检测温室内烟雾与可燃性气体的浓度，做到遇火灾报警功能。
整个系统具有简单易用、成本低廉、智能化程度高、可靠性高等特点，非常适合普通农民大众使用。
关键词： 温室大棚、智能监测、嵌入式、传感器
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河南科技大学本科毕业设计（论文） DESIGN OF INTELLIGENT AGRICULTURAL
MONITORING SYSTEM
ABSTRACT
In today's rapid development of science and technology, the traditional mode of agricultural production has gradually failed to keep pace with rapid economic development needs.So people use advanced science and technology created the greenhouses, soilless cultivation technology, space breeding, and many other modern agricultural cultivation techniques.But most of these advanced agricultural mode of production is high cost, complex operation technology, high quality requirements for operator, user is difficult to make ordinary farmers use these advanced agricultural production technology.
This topic aims to design a suitable for the use of intelligent monitor and control system for agricultural ordinary farmers, the intelligent monitoring system is mainly used in agricultural greenhouses in agricultural production.It is mainly based on the embedded system design, with samsung S3C2440 chip as a system of master control chip, using DHT11 (temperature and humidity monitoring), MH – 410D5 (carbon dioxide sensor), MQ - 2 (smoke monitoring sensor), TSL2561 (such as light intensity sensor) sensor as a system of environmental monitoring module, the remote communication interface using RS485 serial port as a system, use P35 touch screen as human-computer interaction system window.Finally realizes the effect of this system is able to greenhouse humidity, temperature, light intensity and CO? concentration in real-time monitoring, and can monitor data on P35 screen will display in the form of intuitive, when one of these index reaches preset system can make information feedback immediately, transfer the other equipment in a timely manner to control the greenhouse environment.The system will also be able to remotely control and detect smoke and the concentration of combustible gas in greenhouse, do meet fire alarm function.
The whole system is simple and easy to use, low cost, high intelligent degree,
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河南科技大学本科毕业设计（论文） high reliability characteristics, very suitable for the use of ordinary farmers.
KEY WORDS：Greenhouses, Intelligent Monitoring, Embedded, Sensors
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河南科技大学本科毕业设计（论文） 目 录
前 言 ................................................................................................................ 1 第1章 绪论 ....................................................................................................... 2 §1.1 智能农业监测系统的概念 ..................................................................... 2 §1.2 智能农业监测系统的主要内容 ............................................................. 2 §1.3 智能农业监测系统的主要特点 ............................................................. 2 §1.4 智能农业监测系统的研究意义 ............................................................. 3 §1.5 农业监测系统的发展历程与未来发展趋势 .......................................... 3 第2章 智能农业监测系统的总体设计方案 ..................................................... 4 §2.1 智能农业监测系统设计概述 ................................................................. 4 §2.1.1 功能要求 ......................................................................................... 4 §2.1.2 技术指标 ......................................................................................... 4 §2.2 智能农业监测系统的硬件设计方案 ...................................................... 4 §2.3 智能农业监测系统的软件设计方案 ...................................................... 6 第3章 智能农业监测系统硬件设计与实现 ..................................................... 7 §3.1 微处理器的选择 .................................................................................... 7 §3.1.1 S3C2440A简介 .............................................. 错误！未定义书签。 §3.1.2 S3C2440A的内部组成结构 ............................................................ 7 §3.1.3 S3C2440A的主要功能介绍 ............................................................ 7 §3.1.4 S3C2440A的PWM定时器 ............................................................. 8 §3.1.5 S3C2440A的中断系统 .................................................................... 9 §3.2 传感器的选择 ...................................................................................... 10 §3.2.1 传感器的对比与选择 .................................................................... 10 §3.2.2 传感器简介 ................................................................................... 12 §3.2.3 传感器引脚说明及数据传输 ........................................................ 16 §3.3 触屏显示器P35 ................................................................................... 21 §3.3.1 P35屏引脚说明 ............................................................................. 21 §3.3.2 P35屏的控制与配置 ..................................................................... 23 §3.4 MCU外围电路设计 .............................................................................. 23 §3.4.1 电源电路设计 ............................................................................... 23
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河南科技大学本科毕业设计（论文） §3.4.2 485通信接口设计 ......................................................................... 24 §3.4.3 报警与复位电路设计 .................................................................... 25 §3.4.4 执行控制电路设计 ....................................................................... 26 第4章 智能农业监测系统软件设计 ............................................................... 27 §4.1 程序设计的基本框架 ........................................................................... 27 §4.2 软件流程分析 ...................................................................................... 28 §4.3 各模块程序设计 .................................................................................. 28 §4.3.1 数据采集模块程序设计 ................................................................ 28 §4.3.2 显示模块程序设计 ....................................................................... 31 §4.3.3 执行模块及报警模块程序设计 .................................................... 31 第5章 系统调试 .......................................................................................... 33 §5.1 软硬件调试 .......................................................................................... 33 §5.1.1 硬件调试 ....................................................................................... 33 §5.1.2 软件调试 ....................................................................................... 33 §5.1.3 软硬件关联调试 ........................................................................... 33 §5.2 功能测试 .............................................................................................. 33 结 论 .............................................................................................................. 35 参考文献 ........................................................................................................... 36 致 谢 .............................................................................................................. 38 附 录 .............................................................................................................. 39
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