南昌工程学院
毕业设计 (论文)
信息工程学院系（院）通信工程专业
毕业设计（论文）题目大棚温湿度监测系统的设计
学生姓名张小宁
班级 11级通信工程
学号 2011103429
指导教师聂菊根
完成日期2015年 04 月 28 日
大棚温湿度监测系统的设计
The design of temperature and humidity monitoring system in
greenhouse
总计毕业设计（论文） 34页 表格 12 个
插图 27幅
摘要
在大棚种植术里，温湿度是影响作物产量的关键因素，传统的温湿度测量采集方式具有精度不高，操作费时费力的问题，不能够动态监测，很容易造成由于环境因素突变而造成的减产甚至无产的惨痛损失。
本设计以AT89S52单片机为控制核心，用SHT11数字式温湿度传感器作为数据采集，并把数据显示在LCD显示屏上，能任意时刻观测到大棚内部的实时环境参量；用户可自己设定温湿度上下限，当系统检测到的温湿度在安全阀值之外立即通过报警电路报警。这样设计出来的系统具有实时性、精度高、稳定性、低能耗、低成本、操作简单等诸多优点，可广泛应用与大棚种植的环境之中。
关键词：AT89S52； SHT11；大棚；温湿度；传感器
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Abstract
In greenhouse cultivation technique, the temperature and humidity are the key factor to affect the yield of crops. Measurement of temperature and humidity acquisition are the traditional way which is not accurate enough. It conclude time-consuming problem, can not dynamic monitoring, and very easy to cause a painful loss even no gain due to sharply environment change.
The design use AT89S52 microcontroller as the control core, and SHT11 digital temperature and humidity sensor is used for data acquisition, the data are displayed on the LCD screen, real-time environmental parameters within the greenhouse can be observed at any time. The user can set the upper and lower limits of temperature and humidity, When the temperature and humidity are not in the safe range, the system will alarm via alarm circurt. This kind of system design with real-time, high precision, stability, low energy consumption, low cost, simple operation and many other advantages, can be widely used in greenhouse cultivation environment.
Keywords: AT89S52; SHT11; temperature and humidity; monitoring; alarm
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