基于单总线的多点温度测量技术

讨论了基于单总线数字温度传感器DS18B20 的多点温度测量技术。重点论述了系统硬件组成、传感器星型接线拓扑结构、DS18B20 自动寻址和排序实现方法。简单介绍了DS18B20 的基本测温原理和工程应用时的注意事项。给出了试验数据,证明了系统的科学性和有效性。
关键词: 温度测量; 单总线; 数字温度传感器; 单片机; 星型拓扑结构
Abstract : The technology of multi2temperature measure based on single bus digital thermometer DS18B20 is dis2 cussed. The system hardware makeup ,sensor’s stelliform connection topology configuration ,realization method of DS18B20 automatic addressing and taxis are emphatically dissertated. The basic temperature measure principle and applying notice proceedings of DS18B20 are introduced simply. Test data is given , and proves the system’s science quality and validity.
Key words : temperature measure ; single bus ; digital thermometer ; single chip processor ; stelliform connection topology configuration