摘要作者对宿迁当地的西瓜大棚的温度控制现状进行了调查，发现当地的西瓜大棚虽然有使用温度控制方法，但其方法都需要人工去控制，操作起来比较麻烦。所以,设计一个操作简单并且能够实现温度自动控制的系统就很有必要。35839
该文主要是对西瓜大棚温度环境的现状进行分析,针对目前大棚中应用温度系统的问题,并且结合宿迁当地西瓜大棚的特点需求,文章目的是研究设计控制精确、操作简单且成本较低的大棚温度控制系统。通过使用STC89C52单片机作为主控制器、NTC热敏电阻传感器作为温度信息采集原件等构成温度控制系统整体结构，实现对大棚温度的检测与控制从而提升大棚内西瓜的产量。该设计系统具有成本低，结构简单、操作方便等特点。
该设计系统主要包括以下几个模块：传感器模块、CPU模块、显示器模块、按键模块、继电器模块、数模转换模块和温度调节模块。通过这几个模块相互联系工作从而实现对西瓜大棚内温度环境进行检测与控制。
经过试验，检测出了该设计系统基本能够实现对当地西瓜大棚内的温度进行控制。
毕业论文关键词  传感器  STC89C52单片机  温度控制  西瓜大棚
Abstract The author made an investigation on the present conditions of temperature in watermelon greenhouse in Suqian, although the local watermelon greenhouses are using temperature control devices, but they still need manual control and it is inconvenient. So, it is necessary to design a control system which is easy to operate and could realize temperature auto-control.
This paper mainly analyzes the temperature environment of the watermelon greenhouse. Focusing on the present issue of applying the temperature system in greenhouses and combining the features and demands of watermelon greenhouses in Suqian, this paper aims to study and design an accurate-controlled, simple-operated and low cost temperature control system for greenhouses. By using STC89C52 micro-controller as the main controller and using NTC thermistor sensor as the temperature information acquisition of the original constitution of temperature control the overall structure of the system, an overall structure of temperature control system is formed to realize the detection and control of the greenhouses and thus to improve the production of watermelon greenhouses. The design system is low cost, simple-structured and easy-operated.
This system consists of the following modules: the sensor module, the CPU module, the display module, the key module, the analog-digital conversion module and the temperature control module. These modules work together to realize the detection and control of temperature environment in watermelon greenhouses.
Through experiments, this design realizes its basic temperature control in watermelon greenhouses.
Key Words: Sensor STC89C52micro-controller Temperature        detection  Watermelon greenhouse
目   录
摘  要    I
Abstract    II
1  绪  论    1
1.1  选题的背景    1
1.2  课题研究的现状    1
1.3  本文研究的主要内容    2
2  控制系统的总体设计    4
2.1  控制系统的设计目标    4
2.2  控制系统整体结构    4
2.2.1  控制系统整体构成    4
2.2.2  系统工作原理    5
2.2.3  系统的主要技术指标    6
2.3  硬件设备的选择    6
2.3.1  单片机的选择    6
2.3.2  温度传感器的选择    9
3  系统电路的设计    10 STC89C52单片机西瓜大棚温度自动控制系统设计+电路图:http://www.751com.cn/zidonghua/lunwen_33981.html