摘要
为简化青藏铁路冻土路基温度场现有测温系统,将单总线数字温度传感器DS18820应用于冻土路基温度场监测系统中,对传感器处理电路及关键元件参数、防水防尘封装方法及温度数据采集算法等做了具体介绍及实验验证。本系统大大降低了整个系统的复杂度和成本。为青藏铁路冻土路基温度场监测提供了一种新的方法。
To simplify the existing frozen-earth roadbed temperature monitoring system of Tsinghai-Tibet railroad, the 1-wire digital temperature sensor DS18B20 is used in the frozen-earth roadbed temperature monitoring system of the Tsinghai-Tibet railroad. The conditioning circuit, some key component parameters, the waterproof and dustproof methods and a data collection algorithm are presented in detail. Besides, several experiments are done to verify the design. The system has the features of simple circuit, low cost and small power loss, and provides a new way to the frozen-earth roadbed temperature monitoring.
出处
《测控技术》
CSCD
2008年第12期27-29,32,共4页
Measurement & Control Technology
基金
安徽省自然科学基金资助项目"青藏铁路冻土区监测的无线传感器网络节点研究"(070412037)
关键词
冻土路基
温度监测
DS18820
单总线驱动电路
防水封装
frozen-earth roadbed
temperature monitoring
DS18B20
1-wire bus driving circuit
waterproof encapsulation
