智能粮库温度、湿度控制系统模拟设计与制作本科毕业设计.doc

本科课程(设计) 题目智能粮库温度、湿度控制系统模拟设计与制作学院电子信息工程专业电子信息工程班级 13 级电信统本 01班学号姓名吴远明 131040100139 赵君理 131040100147 胡梦 131040100207 指导教师董昌孝完成日期 .25 西安思源学院教务处二〇一五年十二月成绩等级摘要本次设计完成智能粮库温度、湿度控制系统模拟设计与制作。本设计分为上下两层结构,下位机系统以 STMEL 公司生产的 STC90C51 单片机作为温、湿度监控核心部件,采用 DHT11 温度传感器,它是数字温度传感器,能够直接读取被测物的温度值;选取 DHT11 作为湿度传感器,将电容值的变化转为与之呈反比的电压频率信号;一旦温度或湿度值超过设定阈值,即可实现报警。上位机系统仍以单片机为核心,扩展数据存储器,在键盘模块里可以更改阈值, LCD 显示模块显示从下位单片机传来的温度、湿度值。从而实现一种小型粮库的温湿度智能监控。实验表明该系统具有转换速度快、精度高、控制能力强等特点。目前实现粮库温湿度的智能控制需要一种稳定性高、成本低的温湿度智能控制系统,其采用上、下位机控制结构,实现全方位智能化的粮库监控。单片机在这种系统中往往作为一个终端机,安装在系统的某些节点上,对现场温湿度进行实时的测量和控制。单片机的高可靠性和强抗干扰能力,使它可以置于恶劣环境的前端工作。关键词单片机;小型粮库;温度;湿度西安思源学院本科课程(设计) 1 Abstract The intelligent design pleted granary temperature and humidity control system simulation design and production. This design is divided into the upper and lower levels structure, lower place machine system to pany produces the AT89C51 as humidity and temperature monitoring ponents, the temperature sensor DS18B20, it USES "single bus" interface, can be measured directly read things value; Select HS1101 as humidity sensor, will the change of capacitance values to the inverse ofa voltage and frequency signal, and USES the munication and the upper machine;Once the temperature or humidity value more than setting threshold, can realize the alarm. PC system based on single-chip puter is still, extended data storage in the keyboard module can change the threshold, LCD display module from a single chip that under the temperature, humidity value from. So as to achieve a small the temperature and humidity of the warehouse intelligent monitoring. Experiments show that the system has a conversion speed and precision, strong ability to control etc. Characteristics. Now realize intelligent control of the temperature and humidity warehouse need a high stability, low cost of temperature, humidity intelligent control system, and its use,under a machine control structure, achieving all-round intelligent warehouse management control in such syste