基于国产化FPGA的时统系统设计  

Design of Time Unity System Based on Localized FPGA

作　　者：邹悦 张维达[1] 崔明[1] 张甫恺[1] 王岩[1] ZOU Yue;ZHANG Wei-da;CUI Ming;ZHANG Fu-kai;WANG Yan(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《仪表技术与传感器》2023年第2期65-68,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金面上项目(51675506);科技部国家重点研发计划(2018YFF01011503)。

摘　　要：文中设计了基于国产化FPGA芯片PG2L100H的多输入源、多频可选输出的时统系统,实现了包括GPS、北斗、IRIG-B码的多输入源实时切换,并对在进行时间信息的解编码后授时给设备其他系统进行同步,同时在软件设计中加入加三移位运算方法来优化LUTs的使用率。该设计在实验室环境下进行测试,具有成本低、同步精度高、稳定性强等优点,对于光电测控设备现有技术更新具有实用价值。A multi-input source and multi-frequency optional output timing system based on the domestic FPGA chip PG2L100H was designed,which realized the real-time switching of multi-input sources including GPS,Beidou and IRIG-B codes,and decoded the time information in progress.The post-grant time was used to synchronize other systems of the equipment,and a three-shift operation method was added to the software design to optimize the utilization rate of LUTs.The design was tested in laboratory environment,and had the advantages of low cost,high synchronization accuracy,and strong stability,and has practical value for updating the existing technology of photoelectric measurement and control equipment.

关 键 词：FPGA PG2L100H GPS 北斗 IRIG-B码 时统系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]