基于单片机的数字温度计

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基于单片机的数字温度计

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摘要：本文介绍一种基于AT89C2051单片机的一种温度测量及报警电路,该电路采用DS18B20作为温度监测元件，测量范围-55℃-～+125℃，使用4位LED模块显示，能通过键盘设置温度报警上下限。正文着重给出了软硬件系统的各部分电路，介绍了集成温度传感器DS18B20的原理，AT89C2051单片机功能和应用。该电路设计新颖、功能强大、结构简单。

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关键词：温度测量，DS18B20

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Abstract : The introduction of a cost-based AT89C2051 mcu a temperatur measurement circuits, the circuits used DS18B20 high-precision temperatur sensor , measuring scope -55℃-～+125℃,can use the keybord set the warning limitation, the use of four bits seven segments LED that can be display the current temperature. The paper focuses on providing a software and hardware system components circuit, introduced the theory of DS18B20, the founctions and applications of AT89C2051 .This circuit design innovative, poweRFul, can be expansionary strong.

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Key Words : Temperatur measurement, DS18B20

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