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摘 要
温度是一个十分重要的物理量，对他的测量与控制有十分重要的意义，随着
现代工农业技术的发展及人们对生活环境要求的提高，人们也迫切需要检测与控制温度。本温度报警器的设计与制作，阐明了该装置进行设计与制作的具体过程及方法。这种温度报警器结构简单，可操作性强，应用广泛。工作时，温度测量范围为-55ºC到125 ºC当前环境温度若超过设定的高温临界温度，由单片机发出报警信号，防止因温度升高而带来的不必要的损失。
本文介绍的是采用温度传感器DS18B20的温度报警器，自动测量当前环境温度，由单片机STC89C52RC控制，并通过三位7段数码管显示，若当前环境温度超过此温度，系统发出报警。
关键词：STC89C52RC单片机; 温度报警器; 温度传感器 ;发光二极管; 温度数码管显示
Electronic temperature alarm system design
Abstract
Temperature is a very important physics, measurement and control of his have very important sense, with modern industrial and agricultural technology and the development of environment for people's life rise, people also urgently need detection and control the temperature. This temperature alarm design and production, it is expounded that the device for the design and production of specific processes and methods. This temperature alarm simple structure, the maneuverability is strong, wide application. Work, temperature measurement range for - 55 DHS C to 125 DHS environmental temperature if exceed the C the current set of microcomputer temperature critical temperature, issued a warning signal, caused by temperature to prevent unnecessary losses.
This paper is to use temperature sensor DS18B20 temperature alarm, automatic measuring current environmental temperature by a single chip microcomputer AT89C2051 control, and through eight seven segment digital pipe display, if the current environmental temperature over this temperature, system warning.
Keywords: Microcontroller; Temperature; alarm; Temperature sensor; leds
Temperature display