基于单片机的图书馆温湿度检测系统设计

Design of Environment Temperature and Humidity Detector in Library Based on Single-chip

本文采用一种基于AT89S51单片机为控制核心的检测方法,对图书馆环境温湿度进行了研究,设计了温、湿度检测电路和LED实时显示电路等硬件电路.试验数据与专业检测设备测试方法所得的数据相比较,表明以所提方法为关键技术所设计的图书馆环境温湿度检测仪温度测量精度为±0.3℃,相对湿度测量精度为±2％ RH,系统运行可靠,结构简单,性价比高.

This paper studies and analyzes an environment temperature and humidity detector in library based on the AT89S51 microcon- troller. The hardware circuit including temperature detecting circuit, humidity detecting circuit and LED display circuit are designed and realized. The comparison of the measuring data by the new method and other professional testing methods is given. The result shows that the measurement precision of the temperature and humidity are respectively ±0.3℃ and ± 2 % RH. This device has obvious advantages such as reliable performance , simple hardware, cheap price and good stability.