毕业设计（论文）-基于51单片机的远程温度显示系统的设计与实现.doc

延陵学院毕业设计说明书 PAGE II 基于51单片机的远程温度显示系统的设计与实现 Ⅰ Ⅰ 基于51单片机的温度远程显示系统的设计与实现 摘 要 随着现代工业的逐步发展，在工业生产中，温度、压强、湿度和液体是四种最常见的过程变量。其中，温度是一个非常重要的过程变量。比如：在冶金产业、化工产业、电力产业、机械加工以及食品加工等诸多领域，基本都离不开对各种加热炉、热处理炉、反应炉和锅炉的温度进行控制。但是，用常规的操作方法，满足不了对较高的性能要求。利用单片机对它们来进行操作控制不但具有控制方便、灵活性大和简单的优点，而且可以大幅度提高被测温度的技术指标，从而能够大大提高产品的质量和数量。因此，单片机对温度的控制问题是一个工业生产中经常会遇到的控制问题。 本系统实现一个温度远程显示系统，基于STC89C52单片机为设计开发平台，用DS18B20温度传感芯片完成对温度的采集，配合MAX3232通信接口芯片实现温度的远程传输（还可以用232转485接口来增大传输距离），用简单的通信协议来增加传输可靠性，用蜂鸣器实现高低温报警，报警温度可用按键调节。最后用12864液晶显示屏完成显示功能。 关键词：单片机； DS18B20；MAX3232；12864液晶显示屏 Ⅱ Ⅱ DESIGN AND IMPLEMENTATION OF THE SYSTEM 51 SINGLE REMOTE TEMPERATURE DISPLAY ABSTRACT With the gradual development of modern industry, in industrial production, temperature, pressure, humidity, and fluid is four of the most common process variables. Among them, the temperature is a very important process variables. For example: in metallurgical industry, chemical industry, power industry, machinery processing, and food processing, and many other areas, basically cannot leave for various heating furnace, heat treatment furnace, reactor and boiler temperature control. However, with the regular operation method, it cant satisfy the requirements for high performance. Using single chip microcomputer to control the operation of them is not only possesses the advantages of convenient control, flexibility and simple, but also can greatly improve the technical index of the measured temperature, thus can greatly improve the quality and quantity of the product. Therefore, the single-chip computer control of the temperature problem is an industrial production control problems often encountered. The system implements a remote display system temperature,based on STC89C52 microcontroller design and development platform,using DS18B20 temperature sensor chip to complete the collection of temperature, coordinate the MAX3232 chip communication interface to finishing remote transmission of temperature (you can also use 232 to 485 to increase the t