论文总字数：14870字

摘 要

温度和湿度检测现已成为当今社会科学研究中的一个流行的新项目。这是工农业生产过程中必须考虑的条件，是要测量的主要参数。温度和环境湿度将不再以个体方式出现，而是应在系统软件中一起考虑。它广泛用于实验室，蔬菜大棚，花坛，粮库甚至土壤层等各个行业。传统的温度和湿度检查是由员工手动使用湿度表，毛发湿度表和环境湿度纸测量仪器进行的。对于不符合温度和环境湿度的仓库，应进行自然通风，降温和除湿等实际操作。这种人力检查方法既费时又费力，效率较低，偶然性和误差很大。因此，我们需要一种计算精确、使用方便、并且造价低廉的温湿度控制仪器来进行检测，这也是社会经济发展的趋势。采用单片机设计进行温度和环境湿度的检测，具有精度高，功能强，体积小，价格低，简单方便等优点，很好地满足了大家的要求用于温室的温度和湿度检查，既减少了人工成本的浪费，由把效率提升了起来，也更精确。本文基于STC89C52单片机的应用，设计了控制模块，显示控制模块，DHT11传感器控制模块及其报警模块。非常简单地完成温度和湿度检查。DHT11数据温度和湿度传感器将收集的温度和湿度数据信息发送到单芯片设计，并且通过单芯片设计的解决方案会立即显示在OLED显示屏上。如果温度和湿度超过阀值，蜂鸣器就会开始工作，发出警报。

关键词：单片机；湿度；温度；传感器

Design of Temperature And Humidity Detection System For Greenhouse

Abstract

Temperature and humidity detection has become a popular new project in today's social science research. This is a condition that must be considered in the process of industrial and agricultural production, and is the main parameter to be measured. Temperature and ambient humidity will no longer appear individually, but should be considered together in the system software. It is widely used in laboratories, vegetable greenhouses, flower beds, grain depots and even soil layers and other industries. The traditional temperature and humidity check is carried out manually by employees using hygrometers, hair hygrometers and environmental humidity paper measuring instruments. For the warehouse that does not conform to the temperature and humidity, natural ventilation, cooling and dehumidification should be carried out. This kind of manpower inspection method is time-consuming and laborious, with low efficiency and great chance and error. Therefore, we need an accurate calculation, easy to use, and low-cost temperature and humidity control instrument to detect, which is also the trend of social and economic development. Using single chip microcomputer design for temperature and humidity detection, has the advantages of high precision, strong function, small size, low price, simple and convenient, well meets the requirements of everyone, used for greenhouse temperature and humidity inspection, not only reduces the waste of labor costs, improves the efficiency, but also more accurate. Based on the application of STC89C52, this paper designs the control module, display control module, DHT11 sensor control module and its alarm module. It's very easy to complete the temperature and humidity check. DHT11 data temperature and humidity sensor will send the collected temperature and humidity data information to the single chip design, and the solution through the single chip design will be immediately displayed on the OLED display. If the temperature and humidity exceed the threshold, the buzzer will start to work and give an alarm.

Key words: single chip microcomputer; Humidity; Temperature; senso

目录

摘要 I

Abstract II

目录 III

第一章 绪论 1

1.1 选题背景与意义 1

1.2 国内外研究现状 1

1.3 课题主要研究内容 2

第二章 总体设计和方案论证 3

2.1 引言 3

2.2 主要元器件的选取 3

2.2.1 单片机的选取 3

2.2.2 显示器件的选择 3

2.2.3 温湿度传感器的选择 4

2.3 系统总框图 4

2.4 要实现的功能 5

2.5 系统设计的原理 5

2.6 本章小结 5

第三章 硬件设计 6

3.1 单片机模块 6

3.2 传感器模块 9

3.3 显示模块 10

3.4 报警模块 11

3.5 电源电路 11

第四章 软件设计 13

4.1 开发软件介绍 13

4.2 程序流程图设计 13

4.2.1 主程序流程图设计 13

4.2.2 显示屏程序设计 14

4.2.3 传感器模块设计 15

第五章 调试 17

5.1 组装 17

5.2 硬件调试 17

第六章 结束语 18

致谢 19

参考文献 20

附录 21

第一章 绪论

1.1 选题背景与意义

过去传统的农业生产生活中，农作物产量的多少是由自然因素来决定的，如果天气合适农作物生长，那么产量就不会低，相反的，如果天气不适合其生长，则产量就会下降。到了现在人们为了改变自然因素对农作物生长和产量的影响，发明创造出了大棚技术。

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