51单片机电子温度计课程设计和毕业论文.doc

本科毕业设计（论文） 基于51单片机的电子温度计 摘 要 在日常生活生产过程中，检测及控制，温度是生产过程和科学实验中。在生产过程中，为了高效地进行生产，必须对它的主要参数，如温度、等进行有效的控制。温度控制在生产过程。温度测量是温度控制的基础，技术已经。传统的测温元件有热电偶和二电阻。而热电偶和热电阻测出的一般都是电压，再转换成对应的温度，这些方法相对比较复杂，需要比较多的外部硬件支持。我们用一种相对比较简单的方式来测量。 选用AT8951型单片机作为主控制器件，DS18B20温度传感器作为测温通过4位共阳极LED数码管传送数据，实现温度显示。通过DS18B20直接读取被测温度值，进行数据， 关键词：温度，DS18B20，AT89C51 Abstract In our daily life and production process, we often need to measure and control temperature, temperature is the production process and scientific experiments are often encountered in one of the most important parameters. In the production process, in order to efficient production, we must make effective control of its main parameters, such as temperature, humidity, pressure etc... Temperature control plays an important role in the production process. The temperature measurement is the basis of the temperature control .Its technology has become simpler and mature. Traditional thermocouple and temperature components are the second resistor .The thermocouple and thermal resistance are generally measured voltage, and then replaced by the corresponding temperature, these methods are relatively complex, requiring a relatively large number of external hardware support. We use a relatively simple way to measure. Used in the design AT89C51 MCU as the main control device, digital temperature sensor DS18B20 as the temperature components of the anode through the four LED digital display tube parallel transmission of data, to achieve temperature display. This designs content mainly divides into two parts; first, to system hardware part design, including temperature gathering electric circuit and display circuit; Second, to the system software parts design, realizes temperature gathering and the demonstration using the C language. DS18B20 measured by direct reading temperature values and transfer Data into MCU and output to display, this is the design of the Digital Thermometer . Its system constitution is simple, the