多路高速数据采集系统设计与实现

Design and Implementation of a Multi-Channel Data Acquisition System

介绍了一种多路高速实时数据采集系统的设计方案及实现,该系统是一种单路可独立工作、几路组合可实现多路采集的多路百兆高速实时数据采集系统。每个通道的最大采样率为100Msps,最大数据存储容量约为256MByte。其中采用CPLD和DSP组配实现逻辑控制和数据控制,采用CPLD、DSP和SDRAM组配实现海量存储,采用DSP、FIFO和USB、USB-HUB组配实现数据传输,CPLD和DSP复用,还可实现各种复杂功能。它具有扩展灵活,存储量大,实时性强,精度高,传输方便等特点。可作为各种雷达、导引头等外场试验的通用数据采集系统。

In this paper, design and implementation of a multi-channel data acquisition system (MCDAS) are presented, in which the control of the system is implemented by the combination of CPLD and DSP, the bulk buffer of the system is implemented by the combination of CPLD, DSP, and SDRAM, and the data transfer is implemented by the combination of DSP, FIFO, USB and USB-HUB. The system could not only work independently in single-channel mode, it could also implement high-speed real-time MCDAS by the combination of multiple single-channels. The largest sampling rate and data storage capacity of each channel could reach up to 100Msps and 256Mbyte respectively. The system has such advantages as being flexible to extend, large storage capacity, high precision and real-time process, easy to transfer and etc, which could be used as general DAS of radar and seeker experiment.