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摘 要： 电子万年历是一种非常广泛日常计时工具，对现代社会越来越流行。它可以对年、月、日、周日、时、分、秒进行计时，还具有闰年补偿等多种功能，而且DS1302的使用寿命长，误差小。对于数字电子万年历采用直观的数字显示，可以同时显示年、月、日、周日、时、分、秒和温度等信息，还具有时间校准等功能。该电路采用AT89S52单片机作为核心，功耗小，能在3V的低压工作，电压可选用3~5V电压供电。 本设计是基于51系列的单片机进行的电子万年历设计，可以显示年月日时分秒及周信息，具有可调整日期和时间功能。在设计的同时对单片机的理论基础和外围扩展知识进行了比较全面准备。在硬件与软件设计时，没有良好的基础知识和实践经验会受到很大限制，每项功能实现时需要那种硬件，程序该如何编写，算法如何实现等，没有一定的基础就不可能很好的实现。在编写程序过程中发现以现有的相关知识要独自完成编写任务困难重重，在老师和同学的帮助下才完成了程序部分的编写。 万年历的设计过程在硬件与软件方面进行同步设计。硬件部分主要由AT 关键词： 时钟电钟；DS1302；DS18B20；动态扫描；单片机 Abstract
E-calendar day time is a very wide range of tools, increasingly popular in modern society. It can be year, month, day, Sunday, hours, minutes, seconds for time, but also has a leap year compensation to a variety of functions, and the DS1302's long life, small error. For the digital electronic calendar using an intuitive digital display can simultaneously display year, month, day, Sunday, hours, minutes, seconds, and temperature and other information, but also a time-calibration and other functions. The circuit uses AT89S52 microcontroller as the core, power consumption, low-voltage work in 3V, the voltage can choose 3 ~ 5V voltage supply. The design is based on 51 series of microcontrollers to the design of electronic calendar, you can display date information on when the minutes and seconds, and weeks, with adjustable date and time functions. At the same time in the design of the theoretical basis of the MCU and peripheral expansion of knowledge of the more comprehensive preparation. The hardware and software design, there is no good basic knowledge and practical experience will be greatly limited, each feature is required to achieve the kind of hardware, procedures, how to write, how to implement such algorithms, there is no certain foundation can not be good implementation. Found during the preparation process to the existing knowledge to complete the preparation of the task alone difficult, In the help of teachers and students to complete the program part of the preparation. Calendar of the design process in hardware and software to synchronize the design. Hardware mainly by the AT 74HC164 is an 8-bit edge-triggered shift register, serial input data, and parallel output. The software includes calendar program, time to adjust procedures, turn the lunar calendar programs, display programs. Programs written in assembly language used in order to more easily adjust the time and the realization of the lunar calendar display. All programming is complete, the wave software debugging, make sure that no problems, in the Proteus software within a microcontroller embedded in the simulation. The final overall the teacher to help students, as well as their own efforts to complete the design of the electronic calendar. Keywords: Clock electric clock:DS1302；DS18B20:Dynamic scan:scm ~~~~~~目录~~~~~~
一、设计要求与方案论证 ………………………………………………………………………4 1.1 设计要求 ……………………………………………………………………………………4 1.2 系统基本方案选择和论证 …………………………………………………………………4 二.系统的硬件设计与实现………………………………………………………………………5 2.1 电路设计框图 ………………………………………………………………………………5 2.2 系统硬件概述 ………………………………………………………………………………5 2.3 主要单元电路的设计 ………………………………………………………………………6 三、系统的软件设计 ……………………………………………………………………………9 3.1程序流程框图 ………………………………………………………………………………9 3.2 子程序的设计 ………………………………………………………………………………9 四. 指标测………………………………………………………………………………………11 4.1 测试仪器……………………………………………………………………………………11 4.2硬件测试……………………………………………………………………………………11 4.3软件测试……………………………………………………………………………………11 4.４测试结果分析与结论………………………………………………………………………12 五、作品总结……………………………………………………………………………………12 六、致谢词………………………………………………………………………………………12 参考文献…………………………………………………………………………………………13 附录一：系统电路图……………………………………………………………………………14 附录二：系统程序清单…………………………………………………………………………15 附录三：系统使用说明书………………………………………………………………………40 |
