基于DS1820的单总线多点测温技术

Single Bus Multi-point Temperature Detection Technology Based on DS1820

阐述了通过单总线测温元件DS1820来实现多点测温的技术,实现方法是利用DS1820和89C51单片机构建单线多点温度测控系统,通过软件对单片机进行控制,从而实现一根总线多点测温,达到理想的测温效果。实验结果表明,该测控技术具有测温系统简单,测温精度高,连接方便,占用口线少等优点。该技术的创新主要在于能够利用一个通信接口同时监测几个甚至几十个温度数据,从而达到节省带宽,简化硬件设施的目的。

The multi-point temperature detection technology based on a single bus thermalmetric element DS1820 is de- scribed. In order to realize the function and exert its effect, a temperature detection system with a single bus is constructed by integrating the DS1820 device onto the 89C51 single chip computer which is controlled by a software programme. The experi- mental results show that the testing and control system has many advantages such as simpleness, high accuracy, easy access and less connection wires. The innovation is to monitor several or even dozens of temperature points simultaneously by one communication interface to save the bandwidth and simplify hardware connections.