无尘室温湿度监测系统讲解.doc

本科毕业设计(论文) 题目： 院 （系）： 专 业： 班 级： 学 生： 学 号： 指导教师： 2013年 月 本科毕业设计(论文) 题目： 院 （系）： 专 业： 班 级： 学 生： 学 号： 指导教师： 2013年 月 AT89C51单片机作为主控机，对无尘室的温湿度进行实时的监测。温度选用单线数字温度传感器DS18B20采集；湿度选用湿敏电容HS1101结合NE555定时器测量，把对湿度的测量转化为频率的测量，将采集到的数据送到单片机进行处理；由LED数码管对当前的温度、湿度进行显示；设置DS1302实时时钟电路，将整点时对应的温湿度数值存AT24C02中，监测人员通过按按键，可读取过去六小时温湿度信息；当温湿度超过设定的界限时启动报警功能，即蜂鸣器和发光二极管分别产生报警。 本次设计通过系统的调试与仿真，可以实现温湿度值的显示、超限报警、温湿度值的设定等，基本上完成了课题所要求的功能。 关键词： 温湿度； 单片机； DS18B20；HS1101；按键；数码管； Monitoring System of Temperature and Humidity of Clean Room Abstract Temperature and humidity are monitored in the practical application of life and production; it has become increasingly widespread in the plant. Textile, food, medicine, warehouses, agricultural sheds and many other places the application of temperature, humidity parameter requirements are very strict, it is effective in those areas of the temperature and humidity data for real-time monitoring is a need to address an important prerequisite. The contents of this research project is a monitoring system of temperature and humidity of clean room, using AT89C51 microcontroller as the main control unit, to monitor and control the temperature and humidity of the clean room in real time. Using digital temperature sensor DS18B20 to send the collected data, Variable humidity sensor HS1101 to measure humidity with the combination of 555 timers. The measurement is converted into frequency measurement of humidity. LED digital tube display the presented temperature and humidity; the hour of the temperature and humidity values are toured in the AT24C02 storage, setting the clock circuit, by pressing a button, you can read the temperature and humidity of an hour before, and so forth you can read the situation six hours before; Also it needs to design an alarm function, that we can use the buzzer because when the figure of the collected temperature and humidity