基于ms51单片机的数字温度计的设计教案分析.doc

安徽广播电视大学 毕业设计(论文) 分校名称 教学点名称 年级名称 专业名称 机电一体化（本科） 课题名称 基于ms51单片机的数字温度计设计 学生姓名 指导教师 ? 2016年5月 摘 要 随着时代的进步和发展，单片机技术已经普及到我们生活，工作的方方面面，能够独立工作的温度检测和显示系统已经应用于诸多领域。传统的温度检测以热敏电阻为温度敏感元件,热敏电阻成本低,但需要接信号处理电路,而且热敏电阻的可靠性较差,测量温度的准确度低,检测系统的精度差。而今电子技术和微型计算机的迅速发展，采用单片机进行温度检测、数值显示和数据的传送，具有效率高、性能稳定等优点，还可以实现实时实地控制等技术要求，在工业生产中应用越来越广泛。单片机已经走进了我们的生活，并有了不可替代的地位。而在工业五大基本参数中，温度的测量尤其广泛，可见精确的温度对于工业发展来看有多大的作用。本文将介绍一种基于单片机的简单数字温度计，本温度计可以精确地测量并显示温度，并实现上下限的报警功能。 关键词：单片机、数字温度计、DS18B20、AT89S51 ABSTRACT With the progress and development of the times, SCM technology has spread to our lives, work in all aspects, to work independently of the temperature detection and display system has been applied in many fields. The traditional temperature measurement with a thermistor as a temperature sensitive element, the cost of the thermistor is low, but the need is connected with a signal processing circuit and poor reliability of thermistor, temperature measurement accuracy is low, the detection system of precision. Now the rapid development of electronic technology and microcomputer, the use of single-chip temperature detection, data display and data transmission, with the advantages of high efficiency and stable performance, but also can realize the requirement of real-time field control technology, in industrial production is applied more and more widely. SCM has come into our lives, and has an irreplaceable position. In the five basic parameters of the industry, the temperature measurement is particularly wide, and the precise temperature can be seen for industrial development. This paper introduces a simple digital thermometer based on single chip microcomputer, the thermometer can accurately measure and display the temperature, and realize the upper and lower alarm function. KEY WORDS: AT89S