基于IIC总线的温湿度测量系统的设计  

Design of Temperature and Humidity Measurement System Based on IIC Bus

作　　者：王毅[1] 万英[1] 

机构地区：[1]福建师范大学光电与信息工程学院,福建福州350117

出　　处：《福建师范大学学报（自然科学版）》2014年第6期40-45,61,共7页Journal of Fujian Normal University：Natural Science Edition

摘　　要：采用单片机和数字式温湿度传感器SHT11,设计一种温湿度测量系统.介绍单片机控制温湿温度传感器SHT11的工作时序.给出温度测量系统的硬件电路和软件程序设计的方法,以及单片机对SHT11的启动,复位,读数据、写指令等相关程序.实现对测量温湿度的采集和显示.实验表明:测量的最大温度公差为±1.7%,在25℃时的最大相对湿度公差为±5%.系统具有测量精确,测量范围大,体积小,便于控制等优点.A digital temperature and humidity measurement system is design. The system is composed of single chip microcomputer and digital temperature ＆ humidity sensor SHT11. This pa- per introduces operation timing of single chip microcomputer control temperature ＆ humidity sensor SHTll. The design method of hardware and software of the system is given. Relation programs such as start, reset, read data and write order are given also. The system realizes the collection and indication of temperature and humidity. Experiment indicates the maximal T - tolerance is ± 1.7% , and the maximal RH -tolerance at 25 C is ＋5%. The temperature and humidity meas- urement system has the advantages of accurate measurement, wide temperature range, small volume and convenient controlling.

关 键 词：IIC总线 温度测量 湿度测量 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]