EAST现场高速数据采集子系统

摘要

针对现有EAST采集系统信号存在衰减、采样率较低、数据格式不通用等问题,提出现场采集的概念,设计并实现EAST现场高速数据采集子系统.系统使用高速同步采集卡PXI2022,结合RAID0磁盘存储技术,其数据存储采用核聚变领域通用的软件工具MDSplus.实验结果证明,该系统能够较好地解决原有系统存在的问题.%Aiming at the signal distortion, lower sampling rate and data format not in common use in current EAST data acquisition system, thispaper suggests an idea of on-site data acquisition, designs and implements a high-speed data acquisition subsystem on the scene of EAST, by usingthe high-speed synchronous acquisition card PXI2022 and taking advantage of the RAIDO storage technique. In order to make internationalacademic exchange, the acquired data is stored to the MDSplus database which is common used in the nuclear fusion field. Experimental resultsprove that this system can solve the problems in the current EAST data acquisition system better.