基于单片机的GPS高精度授时时钟设计说明

学士学位毕业设计（论文）

基于单片机的GPS高精度

授时时钟设计

学生姓名：

指导教师：

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专业：农业电气化

摘要

本文设计了一种基于P89LPC952高速单片机的GPS卫星授时时钟。它由接收机、中央处理单元、LCM显示、键盘、输出接口组成。利用接收机提供的标准时间信号，通过中央处理单元对数据的处理，从而可同步输出时间数据，保证高精度授时。这不仅解决了时间获取问题，而且能真正实现全球范

围内的时间校准。更创新性地集成了全世界212个城市的实时时间显示。与

传统方法相比，这种全新的时钟同步方法具有实现手段简单、精度高、范围大、不需通道联系、不受地理和气候条件限制等众多优点，是时钟同步的理

想方法。本文介绍了基于P89LPC952的GPS授时时钟装置的硬件；根据装置要实现的功能，给出了主程序和中断程序的流程图和程序介绍。

关键词：授时时钟P89LPC952 GPS 中央处理单元

ABSTRACT

A kind of GPS satellite timing clock based on the P89LPC952 High-speed MCU is recomme nded in the follow ing thesis. It is composed of receptors、central proceeding sections, LCM, keyboard and output connectors. The central proceeding section could deal with the data to make the output time data by use of the standard time signals supplied by receptors, thus, keep ing highly precisi on tim ing. By this way, not only solve the problem of the time obta in ed, but also the time in the worldwide is really completely un ified. Eve n more, creatively in tegrates 212 cities of the world wide ' s -teale display. Compared with conventional method, this new synchronous clock pla n has many adva ntages, such as simple, high precisi on, wide exte nsion, no cha nn els n eeded, no confine of geography and weather en vir onment and so on .It is the ideal way to synchronize the clock. In the following paper, represent the hardware of the GPS timing clock based on the P89LPC952 High-speed MCU. Accordi ng to the fun ctio n of the device, list the flow chart of the main program and the interrupt program and the in troduct ion of those programs.

Keywords: Timi ng clock P89LPC952 GPS Cen tral proceed ing sectio n

目录

摘要............................................................ II.. ABSTRACT (1)

前言............................................................ I V.

1. 绪论......................................................... 1…

1.1设计提出的意义............................................. 1.

1.2课题主要内容...............................................

2. 系统设计基础................................................... 2.

2.1设计思想.................................................... 2.

2.2方案选择.................................................... 2.

2.3本章小结...................................................

3..

3. 系统组成原理及硬件设计........................................

4.

3.1系统的组成和原理...........................................

4.

3.2硬件电路的设计.............................................

4.

3.3本章小结 (10)

4. 软件设计 (11)

4.1软件系统结构.............................................. 1.1 4.2主要算法设计. (12)

4.3本章小结 (15)

5. PCB设计、组装及调试 (16)

5.1 PCB的设计 (16)

5.2 PCB焊接组装 (17)

5.3电路的调试 (17)

5.4本章小结 (18)

结论 (19)

参考文献 (20)

致谢........................................................... 2.1.附录1系统原理图.. (22)