数字万历的设计毕业设计.doc
《数字万历的设计毕业设计.doc》由会员分享,可在线阅读,更多相关《数字万历的设计毕业设计.doc(22页珍藏版)》请在三一办公上搜索。
1、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35V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。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AT89C52单片机,LED显示电路,以及调时按键
2、电路等组成。在单片机的选择上本人使用了AT89C52单片机,该单片机适合于许多较为复杂控制应用场合。74HC164 是 8 位边沿触发式移位寄存器,串行输入数据,然后并行输出。软件方面主要包括日历程序、时间调整程序,公历转阴历程序,显示程序等。所有程序编写完成后,在wave软件中进行调试,确定没有问题后,在Proteus软件中嵌入单片机内进行仿真。最后总在老师同学的帮助以及自己的努力下完成了此次电子万年历的设计。关键词:时钟电钟 DS1302 DS18B20 动态扫描 单片机AbstractE-calendar day time is a very wide range of tools, i
3、ncreasingly 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 DS1302s long life, small error. For the digital electronic calendar using an intuitive digital display can simultaneou
4、sly 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 desig
5、n 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 knowl
6、edge 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 f
7、oundation 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 softwar
8、e to synchronize the design. Hardware mainly by the AT89C52 microcontroller, LED display circuit, and the tune composed of the circuit when the button. In the SCM choice I used the AT89C52 microcontroller, which is suitable for many of the more complex control applications. Monitor the use of two 7S
9、EG-MPX8-CA and a 7SEG-MPX4-CA. 7SEG-MPX8-CA is a total of eight-yang diode display, 7SEG-MPX4-CA is a total of four-yang diode display. In order to more easily control the three monitors, I use three 74HC164 to drive.74HC164 is an 8-bit edge-triggered shift register, serial input data, and parallel
10、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 s
11、oftware 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 Dyna
12、mic scan SCM目录第一章 设计要求与方案论证1第一节 设计要求1第二节 系统基本方案选择和论证1第三节 电路设计最终方案决定3第二章 系统的硬件设计与实现4第一节 电路设计框图4第二节 系统硬件概述4第三节 主要单元电路的设计4第三章 系统的软件设计8第一节 程序流程框图8第四章 指标测试12第一节 测试仪器12第二节 硬件测试12第三节 软件测试13第四节 测试结果分析与结论13致谢词15参考文献16附录一 系统电路图17附录二 系统使用说明书18第一章 设计要求与方案论证第一节 设计要求一、基本要求:1.具有年、月、日、星期、时、分、秒等功能;2.时间与阴、阳历能够自动关联;3.
13、具有温度计功能; 4.具备年、月、日、星期、时、分、秒校准功能。二、创新要求1.具有上、下课响铃功能;2.具有防御报警功能;第二节 系统基本方案选择和论证一、单片机芯片的选择方案和论证:方案一: 采用89C51芯片作为硬件核心,采用Flash ROM,内部具有4KB ROM 存储空间,能于3V的超低压工作,而且与MCS-51系列单片机完全兼容,但是运用于电路设计中时由于不具备ISP在线编程技术, 当在对电路进行调试时,由于程序的错误修改或对程序的新增功能需要烧入程序时,对芯片的多次拔插会对芯片造成一定的损坏。方案二:采用AT89S52,片内ROM全都采用Flash ROM;能以3V的超底压工作
14、;同时也与MCS-51系列单片机完全该芯片内部存储器为8KB ROM 存储空间,同样具有89C51的功能,且具有在线编程可擦除技术,当在对电路进行调试时,由于程序的错误修改或对程序的新增功能需要烧入程序时,不需要对芯片多次拔插,所以不会对芯片造成损坏。所以选择采用AT89S52作为主控制系统.二、显示模块选择方案和论证:方案一:采用LED液晶显示屏,液晶显示屏的显示功能强大,可显示大量文字,图形,显示多样,清晰可见,但是价格昂贵,需要的接口线多,所以在此设计中不采用LED液晶显示屏.方案二:采用点阵式数码管显示,点阵式数码管是由八行八列的发光二极管组成,对于显示文字比较适合,如采用在显示数字显
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 数字 万历 设计 毕业设计
链接地址:https://www.31ppt.com/p-3944176.html