基于数字温度计DS18B20的温度测量仪的开发

Development of Temperature Measuring Instrument Based on Digital Thermometer DS18B20

传统的温度测量系统通常需要对采样电压进行信号放大和A/D转换,介绍了基于数字式温度计DS18B20的温度测量仪的硬软件开发过程,DS18B20将温度信号直接转换为数字信号,实现了与单片机的直接接口,从而省去了信号调理电路。该仪器电路简单、功能可靠、测量效率高,很好地弥补了传统温度测量方法的不足。

In traditional temperature measuring system, signal amplification and A/D conversion are necessary for sample voltage. The development of the hardware and software of temperature measuring instrument based on digital thermometer DS18B20 is introduced. In DS18B20, the temperature signals were converted into digital signals directly, and interfaced with a MCU, so that the signal conditioning circuit could be omitted. This instrument features simple circuit, reliable functions, and high-efficiency measurement. It covers the shortages of the traditional temperature measurement.