分布式测温中传感器时序与温度读取研究

Research of Temperature Reading and Analysis for Time Slots in Distributed Temperature Measurement

在分布式测温系统中应用了大量的新型传感器DS18B20,DS18B20是单总线数字温度传感器其硬件接线简单,但时序非常复杂。正确使用单总线数字温度传感器,分析其时序关系,基于时序编制正确程序具有及其重要意义。文中结合时序图对初始化时序、写时序和读时序进行了详细阐述,并给出了实现各种时序的软件程序。应用初始化时序和读写时序实现了温度采集,并以传感器64位序列号读取程序的设计说明了时序的综合应用。说明了温度采集程序的设计思路。并给出了分布式测温系统中的温度显示。文中基于时序进行温度的正确读取与显示已经应用于分布式测温系统中。

A lot of new temperature sensors DS18B20 are used in distributed temperature measurement system. DS18B20 is a single bus digital temperature sensor. The hardware connection of temperature sensor is simple and time slots are very complex. Using the single bus temperature correctly, analyzing time slots and designing the program based on correct time slots have an important meaning. Initialization timing, writing time slots and reading slots are expounded in this paper in detail. Software program of realizing...