文档介绍：基于51单片机温湿度监控系统毕业设计
摘要
温湿度监控是人们对居室要求的重要指标之一,也是影响人体健康的重要因素之一。为了保证对温湿度良好的监测和控制,本文采用数字式温湿度传感器SHTll来设计居室温湿度监测系统,以达到简化软硬件系统设计,提高测量精度的目的。首先介绍了SHTll的结构特点、接口电路,以及温湿度测量系统的软硬件设计方案,最后基于AT89C51单片机和光电耦合器设计了电路简洁、大大节省I/O口资源的居室温湿度监控系统,保证了由AT89C51单片机输出的弱电来控制外围的强电电路,本设计不仅仅只是在原理上可行,而且在实际运用中也了能实现对人们居室温湿度的精确测量与控制,该电路简单且工作稳定,集成度高,操作方便、灵活,对满足人们居室环境的要求具有一定的实用价值和意义。
关键字:AT89C51单片机,SHT11,光电耦合器
I
Abstract
The temperature and humidity control to the requirements of the bedroom is people important indexes, and also one of the important factors affect human health of one. In order to guarantee to the temperature and humidity good monitoring and control, this paper using digital temperature and humidity sensors to design SHTll bedroom temperature and humidity monitoring system, in order to achieve the simplified the hardware and
software system design, improve the accuracy of measurement purposes. First introduced the structure characteristics of the SHTll, interface circuit, and the temperature and humidity measurement system hardware and software design scheme, then based on AT89C51 single-chip puter and photoelectric coupling control circuit design the simple circuit, save the I/O mouth of temperature and humidity control system resources bedroom, ensure the electricity output by AT89C51 single-chip puter to control in the outer reaches of the high voltage circuit, this design is not just in principle on feasible, but also in the practical application of the bedroom can realize to people the precise measurement of the temperature and humidity and control, the circuit is simple and stable operation, high level of integration, convenient operation, flexible, to meet the requirements of the people bedroom environment has certain practical value and meaning.
Keywords:AT98C51,SHT11, ,Photoelectric coupled circuit
II
目录
摘要.......................................................................................................................... I ABSTRACT .........................