电子信息工程专业毕业论文--多功能数字温度计的设计.docVIP

摘 要 随着人们生活水平的提高，人们对于自己生活的环境越来越关心。近些年来，由于全球变暖问题越来越受到人们的关注，人们对于温度方面极为关注，对于温度这个字眼也越来越敏感。 在当今时代，温度的确对于农业，工业和人们的生活都有着甚为紧密的影响。而温度的测量就成了一项必不可少的工作，传统的测量工具既费时间，而且测量的精度不高。而数字温度计与传统的温度计相比，具有读数直观，测量范围广和测量精度高的特点，再借助目前的单片机技术，使测量工具更小巧，轻便。广泛应用于大众的生活中。 本文主要介绍了由单片机STC89C52和温度传感器DS18B20及语音芯片ISD1720为主要器件的以温度采集，显示和语音报温为主要功能的详解电路设计方案。其中包括软件部分的设计和硬件部分的设计。显示部分采用共阴极4位一体的8段LED数码管。软件设计部分采用高级程序设计语言C语言实现。软件设计工具包括Keil C51和Protues仿真软件。 关键字：单片机；数字温度计；C语言；语音芯片；ISD1720 Abstract As peoples living standards improve, people are increasingly concerning about their living environment. In recent years, global warming problems are payed more and more attention.People are extremely concerning about the temperature, which has become increasingly sensitive to the word.  In modern times, temperature has a very strong influence on agriculture, industry and peoples lives. So the temperature measurement becomes a necessary work. While the traditional measurements is time-consuming and the accuracy is not high. Compare a digital thermometer with a traditional thermometer, former has intuitive readings, wide measurement range and high precision measurement.And then with the current chip technology, the measurement tool is more compact and light,which is widely used in public life.  This paper describes a detailed circuit design including temperature sensor DS18B20, microcontroller STC89C52 and voice chip ISD1720 , which include software design and hardware design. And a 4-bit common cathode LED digital tube is used to display datas. Software design uses high level programming language ,C-language. Software design tools include simulation software Keil C51 and Protues. Keywords: microcontroller; digital thermometer; language C; voice chip; ISD1720 目录 第一章 绪论---------------------------------------------------------------------------------------------------- 课题开发背景----------------------------------------------------------------1 课题研究的目的意义------------------------------------------------