摘要
针对目前采用的热敏电阻测量方法,提出了采用单总线数字式温度传感器DS18B20和单片机组成的新型智能温度测量仪。介绍了DS18B20的结构和工作原理,以及单总线工作原理,给出了由51单片机和DS18B20构成的单总线温度测量仪的硬件电路及程序设计。经试验基于单总线器件DS18B20的温度测量仪,具有测量准确、测温范围宽、体积小、控制方便等优点。
In this paper,a new temperature meter composed of 1-wire temperature sensor DS18B20 and MCU is designed,which has advantages of the thermistor.In the article,the DS18B20＇s structure and controlling principles are introduced.Also,hardware circuit and software design of the temperature meter are given.Tests show that the temperature meter has the advantages of accurate measurement,wide temperature range,small volume and convenient controlling.
出处
《仪表技术》
2010年第4期68-70,共3页
Instrumentation Technology
关键词
单总线
DS18B20
单片机
温度检测
1-wire
DS18B20
single chip microcomputer
temperature measurement
