本科毕业设计开题报告多功能电子钟设计与实现.docVIP

本科毕业设计(论文)开题报告 题目： 多功能电子钟 课 题 类 型： 设计√ 实验研究□ 论文□ 学 生 姓 名： 学 号： 专 业 班 级： 电子信息工程2 学 院： 指 导 教 师： 开 题 时 间： 本课题的研究目的、研究现状及发展趋势意义 一寸光阴一寸金，寸金难买寸光阴。在其推动下，现代电子产品有力推动社会生产力的发展 郭沫若先生曾说：时间就是生命，时间就是速度，时间就是力量。时间对来说总是那么宝贵 电子钟是采用电路实现对时分秒数字显示的计时装置广泛用于个人家庭等公共场所成为人们日常生活中不可少的必需品由于数字集成电路的发展和石英晶体振荡器的广泛应用使得数字钟的精度，远远超过老式钟表钟表的数字化给人们生产生活带来了极大的方便而且大大地扩展了钟表原先的报时功能诸如定时自动报警按时自动打铃定时广播、自动起闭路灯、定时开关烘箱、通断动力设备、甚至各种定时电气的自动启用等所有这些都是以钟表数字化为基础的。因此，。The electronic clock mainly uses the electronic technology make the clock computerization, the digitization.Compared with the traditional mechanical bell, it has the clock precision, intuitive display, the advantages of no mechanical transmission device, which is widely used.In addition, living and industrial and agricultural production, people on the clocks function has also put forward many demands: alarm clock, calendar, temperature display, so electronic clock need multi-function. According to the different requirements of the people, the design for the main implementing a clock/calendar can be displayed normal, collecting personal ambient temperature, with the timing alarm of the multi-function electronic clock Through access to a lot of information.Comparing and analysising the development technology of the electron clock, the design determines to use the MCU technology to realize the multi-functional electron clock. This design application AT89C51 as a core chips, 7 LED digital displaying, using DS1302 real-time clock chip to complete the basic function of the clock/calendar. At the same time the design use of DS18B20 temperature sensors to collect the environmental temperature. The method has the advantage of being simple circuit, reliable performance, good real-time, high precision of the time and temperature, cost-effective to develop more easily. 拟解决的关键问题 随着社会的进步，科技的改革，人们对时钟的要求越来越多，诸如对时钟的形状、功能的要求。单片机多功能电子时钟在今后的发展应用中会越来越广泛，普及。 利用单片机技术实现电子时钟，仅仅是众多方法之一。并且市场上的实时时钟日历芯片品类繁多，IC化的传感