基于GPS授时的异地同步数据采集系统  

A Synchronous Acquisition System with GPS Timing

作　　者：燕斌[1] 赵飞[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《电子科技》2008年第12期46-49,共4页Electronic Science and Technology

基　　金：国家863计划资助项目(2006AA01Z268)

摘　　要：基于GPS授时的异地同步数据采集系统用于异地的数据采集设备进行精确同步。系统硬件主要包括Motorola GPS接收机、ADLink PCI9820采集卡和Xilinx Sparten3E FPGA,软件使用VC6编程控制采集卡进行数据采集。该系统的原理是通过GPS的秒脉冲,使其在同一时刻触发采集卡进行数据采集。其中同步触发控制逻辑由FPGA实现。实验证实该系统的同步性能达到指标要求。A synchronous acquisition system with GPS timing is used to accurately synchronize dada acquisition in different places. The hardware includes the Motorola GPS receiver, ADLink PCI9820 acquisition card and Xilinx Sparten 3E FPGA, and the programming language is VC6. The principle of the system is to use the PPS （Pulse per Second） generated by the GPS receiver to trigger PCI9820 acquisition card. In addition, the logic of the synchronous trigger is realized by the Xilinx FPGA. The experimental results demonstrate the accurate synchronization capability of the system.

关 键 词：数据采集 GPS授时 同步 FPGA 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]