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.
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)
