1、 毕毕 业业 设设 计计 (论论 文文) 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 班 级 11 级通信工程 学 号 指导教师 完成日期 2015 年 04 月 28 日 大棚温湿度监测系统的设计大棚温湿度监测系统的设计 The design of temperature and humidity monitoring system in greenhouse I 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
2、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:关键词:AT89S52; SHT11; 大棚; 温湿度;传感器 II Abstract In greenhouse cultivation technique, the temperature and
3、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 enviro
4、nment 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 a