万年历设计制作【毕业作品】

BI YE SHE JI

( 届)

万年历设计制作

(英文) calendar design

所在学院电子信息学院

专业班级电子信息工程

学生姓名学号

指导教师职称

完成日期年月日

摘要

在英文中称为电波钟的，是一种通过接收国家授时中心的无线信号以确保时间准确性的计时工具。它通过钟表内置的电波接收器和天线来实现，接收发射塔发出的“标准时间”电波，获取时刻和日历等数据，自动校正手表的时间和日期。以单片机为核心处理，其技术较GPS相对简易，价格低廉，授时精度高，在诸多领域中渐渐体现出优越性，电波授时技术的发展是未来计时产品的主流，在军事和科学实验以及人们日常生活中都有广泛的应用前景，还可应用于通讯、交通、邮电、计算机、工业控制等领域。

本系统需要从硬件和软件两个方面进行制作与调试。在硬件上，主要分为频带处理部分和基带处理部分。在软件上，主要完成对JJY信号的接收解码功能和电子时钟的功能。这个万年历除显示时间外，温度信息也是一个较为实用的装置。硬件的主要内容为: 接收天线、接收解调电路、基带处理电路、电源电路。最后再通过液晶显示屏幕显示日期时间以及温度。

关键词：电波，无线，接收，误差，时码，精准

Abstract

It is called Radio Controlled Clock in english.It is a kind of timing tool through the center of the GPS Clock Radio signal of receiving countries to ensure the accuracy of the time.It is realized through the radio receiver and antenna which bulit-in clock and watch.To receive a tower "standard time" waves, get time and a calendar and other data,correct the time and date of the watch automatically.With the single chip processor as the core processing,its technology is simpler than GPS, the price is lower, GPS clock has high precision,and in many fields gradually reflects the superiority, the development of the waves GPS clock technology is the mainstream of the future time products,It has a wide application in military and scientific experiments and People's Daily life,can also be used in communication, transportation, post and telecommunications, computer, industry control, etc.

This system need made and debuged from two aspects of hardware and software.In the hardware,mainly divides into band processing and baseband processing.In software,mainly to complete the function of JJY signals decoding and also the function of electronic clock.The calendar shows the time except the temperature information is also a more practical device. The main content of the hardware for: receiving antenna, receiving demodulation circuit, baseband processing circuit, the power supply circuit. At last, and through the liquid crystal display screens to display the date and the temperature.

Key Words:Waves, wireless, receiving, error, code, accurating

目录

1 引言 (1)

2 总体设计 (2)

3 硬件设计 (5)

3.1接收信号系统 (5)

3.2单片机最小系统 (5)

3.2.1 时钟电路 (6)

3.2.2 复位电路 (6)

3.2.3单片机 (7)

3.3键盘和显示模块 (7)

3.3.1 键盘 (7)

3.3.2 液晶显示模块 (8)

3.4温度采集模块 (9)

3.4.1 温度传感器选择 (9)

3.4.2 温度采集电路 (10)

3.5电源管理模块 (10)

3.6整形模块 (11)

4 软件设计 (12)

4.1总体程序流程图 (12)

4.1.1主程序 (13)

4.2JJY接收信号模块 (14)

4.2.1 JJY编码技术与格式 (14)

4.2.2编码技术的程序 (15)

4.2.3JJY接收程序流程图 (17)

4.2.4 JJY信号解码程序 (19)

4.3电子日历 (20)

4.3.1 电子日历程序 (20)

4.4键盘 (21)

4.4.1 如下图键盘程序流程图 (21)

4.4.2 键盘功能实现程序 (21)

4.5液晶显示 (22)

4.5.1液晶显示流程图 (22)

4.5.2 液晶显示程序 (23)

4.6温度采集 (23)

4.6.1温度读写操作 (23)

4.6.2温度转换 (26)

5 制作和调试 (28)

5.1硬件电路的布局与焊接 (28)

5.1.1 电路组成 (28)

5.1.2 系统制作 (28)