多模式高速数据采集系统设计与实现  

Design and Implementation of Multi-mode High-speed Data Acquisition System

作　　者：吴越[1] 严济鸿[1] 何子述[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都611731

出　　处：《仪表技术与传感器》2013年第3期50-53,共4页Instrument Technique and Sensor

摘　　要：为满足科研和实验中高速宽带信号采集的需求,设计并实现了一种的多模式高速数据采集系统。该系统以FPGA为核心,以大容量DDR2为数据缓存,利用高采样率AD实现高速采集。系统采用EZ-USB FX2LP系列USB芯片将数据回传至计算机中,由计算机应用程序以进行控制、数据采集和波形显示,具有外触发、内触发、延时触发等多模式采集功能。测试结果证明能够实现在250MSPS采样率下多模式数据采集。实际应用中如果需要可以将采样率提升到最高500 MSPS.This paper designed a multi-smodel high-speed data acquisition system and realized it to meet requirements in in industry,research and experiment.This system used FPGA as control core,and high-capacity DDR2 as data caching,with high sampling rate ADCs to realize high-speed data acquisition.It transferred data to computer with an USB chip of EZ-USB FX2LP family,and had an application program for control,data acquisition and waveform display,with multi-mode data acquisition function such as external trigger,internal trigger,delayed trigger.The test result manifests this system can achieve multi-model high-speed data acquisition at sample rate of 250 MSPS.The sample rate can be increase to the highest rate a 500 MSPS in practical application if needed.

关 键 词：FPGA USB DDR2 数据采集 高速 

分 类 号：TP375[自动化与计算机技术—计算机系统结构]