毕业论文：基于GPS的精确电子日历设计.doc

基于GPS的精确电子日历设计 摘 要 随着时代的发展，生活节奏的加快，人们的时间观念愈来愈强，设计开发数字时钟具有良好的应用前景。然而传统的时间服务方式越来越难以满足现代工业化生产实践对时间的要求。在GPS的高速发展下，其授时功能已日益被人们所关注[1]。 由于单片机价格的低成本、高性能，在自动控制产品中得到了广泛的应用。本设计利用Atmel公司的AT89S52单片机对电子时钟进行开发，设计了实现所需功能的硬件电路，应用C语言进行软件编程，并用实验板进行演示、验证。 本论文主要介绍构成GPS高精度时钟的各模块芯片的功能及各管脚的连接与执行情况，详细阐述了GPS授时系统中的授时模块，包括GPS授时的同步利用方式和GPS接受端的数据输出形式以及GPS模块与单片机之间的连接通信，来达到读取GPS信息并且在LCD1602上显示时间的目的。 本文给出了从GPS模块读取的数据中截取时间数据并和单片机之间进行传输显示的流程图及主要程序。考虑到接受GPS信号的问题上，本系统将加入一个DS1302时钟芯片用来解决GPS信号中断或者信号强度太低导致读取不到数据的问题。 最后，本文描述了GPS高精度时钟在设计和实现过程中可能出现的问题及其调试过程，并对该模块实际应用上的展望。 关键字：高精度时钟；GPS接收模块；AT89C52；LCD1602；DS1302 Abstract With the development of The Times, the accelerating rhythm of life ,peoples concept of time becomes more and more strong,therefore, design and development digital clock has a good application prospect.However, traditional way of time service is increasingly difficult to meet the requirements of modern industrial production practice of the time. In the rapid development of GPS, the GPS clock function is increasingly attention by people.Because of the price of low-cost, high-performance single chip microcomputer has been widely used in automatic control of the products.This design use the AT89S52 microcontroller on the electronic clock of Atmel company development,implements the required function of the hardware circuit is designed,application C language for software programming and demonstration, validation with the test board. This paper introduces a GPS high precision clock module chip function and the pin connection with the implementation,GPS timing GPS clock module in the system are expounded in detail,including GPS timing synchronization using method and GPS receiving the data output form and the connection between the GPS module and MCU communication,to read the purpose of the GPS information and on the LCD1602 display time. The data read from the GPS module are given in this paper the interception time data and transmission between MCU and shows the flow chart and main program.