基于DS18820的多点温度测量仪设计

The Design of Multi-point Temperature Measuring Instrument Based on DS18B20

本文介绍了基于DS18820和AT89C51的多点温度测量的方法和原理，利用DS18820单总线温度传感器和单片机与其它外围设备结合在一起实现温度的测量和显示。该设计主要分为以下三大部分：硬件设计、软件设计和整个系统的调试与实现。其中硬件设计主要是由ProtelDXP软件进行电路的设计和PCB板的绘制；软件设计采用C/C＋＋语言编写实现。采用该解决方案，实现了基于DS18820进行的各项软硬件的设计、调试和处理，实现了多点温度测量和显示。

This article describes the multi-point temperature measurement method and principle based on DS18B20 and AT89C51, the measurement and display of the temperatures are achieved by making use of the combination of the l-wire temperature transmitter DS18B20 and the MCU and other peripherals. The design is mainly divided into the three parts as follows： the hardware design, the software design and the debugging and implementation of the entire system. Among the design, the hardware design mainly is of circuits designing and PCB drawing by means of Protel DXP software and the software design is realized by using C/C＋＋ language programming. The DS18B20 based design, debugging and dispose of the all software and hardware items and even the multipoint temperature measuring and displaying have been realized by adopting the solution.