基于单片机的大棚温湿度控制系统资料

摘要

温室大棚是设施农业的重要组成部分，大棚测控系统是实现大棚自动化、科学化的基本保证。通过对监测数据的分析，结合作物生长规律，控制环境条件，使作物达到优质、高产、高效的栽培目的。计算机应用技术的发展，也使得用计算机控制的方面也涉及到各个领域，其中在大棚内用单片机控制温度、湿度是应用于实践的主要方面之一。

对于蔬菜大棚来说，最重要的一个管理因素是温度和湿度等控制。本设计是一个专门为温室大棚温湿度测量控制而设计的系统。通过对系统的硬件部分和软件部分设计来达到监控要求。硬件部分实现了对温湿度传感器模块、显示模块、控制模块的设计；软件部分主要根据系统的设计思想设计出了主程序和子程序流程图，并通过程序实现。在系统设计过程中充分考虑到性价比，选用价格低、性能稳定的元器件。通过实践证明，系统具有性能好、操作方便等优点，能实现对温湿度等的显示、调节和控制。系统在其它领域还具有一定的推广价值。

关键词：大棚; 温度; 湿度; 传感器

ABSTRACT

Greenhouse is an important component of protected agriculture. Measuring and controlling systen is the basis of the management automation in the greenhouse. With the growth rules analyzing measurement data and controlling circumstance condition. It makes greenhouse better, and more productive and high quality. With the development of computer application technology, the computer-controlled areas are also involved, the plastic temperature using SCM and humidity is one of the main aspects used in practice.

For vegetable shed speaking, one of the most important management factor is the temperature and humidity control. The thesis is about an intelligent system designed for controlling the temperature and humidity of a greenhouse. It can meet the demand of monitoring through the design of hardware and that of software in details. The former is more important in this dissertation, including the introduction of sensor of measuring temperature and humidity, demonstrating mode of data, the mode of control and the connecting part of the changing column. And according to the design thoughts the latter shows the flow chart of the main program and the subprogram, realized by program. This thesis choose the decices as full consideration of the ration between prformance and cost as possible. The system adopts quite a new integrated circuit, which makes it function better and run more conveniently when put into practice. Furthermore, not only can it achieve the goals of manifesting and regulating the temperature, but also it can be controlled. And it has much of value to apply and popularize in other fields.

KEY WORDS:Vegetable; Temperature; Humidity; Sensor

目录

摘要............................................................... I 前言.. (1)

1 绪论 (2)

1.1课题的选题背景 (2)

1.2 课题研究的意义 (2)

1.3 本论文主要研究内容 (2)

1.4 系统的工作原理简介 (3)

2 系统总体方案设计 (4)

2.1 系统总框图 (4)

2.2 方案选择 (4)

2.2.1单片机的选择 (4)

2.2.2 传感器的选择 (5)

2.3.2 显示器选择方案 (6)

3 系统硬件电路的设计 (7)

3.1系统硬件概述 (7)

3.2主控模块设计 (7)

3.2.1单片机引脚介绍 (8)

3.2.2单片机最小系统 (11)

3.3 DHT11传感器模块设计 (13)

3.3.1 DHT11传感器简介 (13)

3.3.2 DHT11传感器模块电路设计 (15)

3.4 液晶显示模块设计 (16)

3.4.1 液晶显示屏简介 (16)

3.4.2 液晶显示模块电路原理图 (18)

3.5继电器模块 (19)

3.6阀值设定模块 (20)

4 系统软件程序的设计 (23)

4.1 液晶显示模块设计 (24)

4.2 传感器模块设计 (25)

5 系统分析与调试 (27)