基于PXI架构的高速数据采集系统设计  

Design of High-speed Data Acquisition System Based on PXI Structure

作　　者：黄宇[1] 柏正尧[1] 董亮[1,2] 侯观庆 陆宗 

机构地区：[1]云南大学信息学院,昆明650091 [2]中国科学院云南天文台,昆明650011

出　　处：《自动化与仪表》2015年第9期79-83,共5页Automation & Instrumentation

基　　金：国家自然科学基金委员会-中国科学院天文联合基金项目(U1231122;11303094)

摘　　要：根据高速数据采集系统的带宽、精度、误差要求,使用NI FlexRIO设备设计实现了基于PXI架构的高速数据采集系统。该系统以Virtex-7 FPGA为控制核心,在LabVIEW FPGA Module环境下快速实现了ADC基于时间交替采样算法的高速采样以及对数据上传时拥塞的优化。实验结果和工程测试表明,该设计能够实现3.0 GS/s的高速采样并能快速稳定地将数据上传至PC。According to the requirements of the high-speed data acquisition system＇s bandwidth,accuracy and error, this paper designed and implemented high-speed data acquisition system using NI FlexRIO devices. The system uti- lized the Virtex-7 FPGA as the core of control,which implements ADC high-speed sampling using time-interleaved sampling algorithm and optimizes the congestion problems exists in the uploading under the development of LabVIEW FPGA Module in a short time relatively.Experimental results and engineering tests show that the design can achieve high-speed sampling 3.0 GS/s and can upload the sampling data to PC rapidly and stably.

关 键 词：数据采集 时间交替采样 虚拟仪器 LABVIEW FPGA 

分 类 号：TN911.7[电子电信—通信与信息系统]