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介绍单总线数字温度传感器DS18B20的基本原理,通过对DS18B20的特性、内部结构以及单总线技术特点的深入分析,以Intel公司的80C52单片机为平台开发高精度数字温度计,包括系统设计方案、硬件组成、软件编程,通过与传统测温装置相比较,基于DS18B20的数字温度传感器具有结构简单、测温精度高、稳定可靠的优点。
This paper introduces the basic principle of single bus digital temperature sensor DS18B20. Based on the characteristics of DS18B20, the internal structure and the characteristics of single bus, this paper develops a high precision digital thermometer based on Intel 80C52 microcontroller, including system design, hardware composition, Software programming, compared with the traditional temperature measurement device, digital temperature sensor based on DS18B20 has the advantages of simple structure, high precision temperature measurement, stable and reliable.