基于高速单片机的GPS接收系统设计  

GPS Receiver System Design Based on High-speed MCU

作　　者：刘金星[1,2] 李洪文[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林省长春市130033 [2]中国科学院研究生院,北京100039

出　　处：《信息化研究》2010年第3期31-34,共4页INFORMATIZATION RESEARCH

基　　金：国家863计划基金资助项目(2008AA8080202)

摘　　要：为了得到满足工程需求的高精度GPS信息接收系统,文中提出了基于GPS接收模块的系统设计方案,利用功能强大的高速C8051F120单片机作为主控制器,对基于NMEA-0813协议的GPS数据信息进行解析、提取和LCD液晶显示以及利用GPS秒脉冲同步触发的串行通信;同时,利用EPM570T144型号CPLD(复杂可编程逻辑器件)实现基于GPS秒脉冲的同步时钟多路输出等功能。给出了硬件电路设计原理图和C语言的软件思想流程图、CPLD程序框图,通过设计成功实现了预期目标。In order to get a precise GPS receiver system, we propose a design concept, which is based on the high-speed MCU, C8051F120, to resolve this problem. Firstly, we introduce what is and how to parse the NMEA-0813 information. Secondly, we elaborate the way to realize the targets, such as LCD display and com- munication using LCD module, PPS, MCU. At the same time, we make use of CPLD-EPM570T144 to output the divided multiplex pulse which is based on PPS. We present the hardware principle diagram and the software flow chart. Practically. we achieved the target successfully.

关 键 词：GPS 单片机 LCD CPLD 同步时钟 通信 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]