Design of Tokamak Synchronous Data Acquisition System Based on PXI Express
Design of Tokamak Synchronous Data Acquisition System Based on PXI Express
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发表时间：
2014
影响因子：
1.3
通讯作者：
L. Ru
中科院分区：
文献类型：
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作者：
L. Ru
随着J-TEXT器件的发展，原有的数据采集系统在稳定性、模块化和采样率等方面已不能满足实验的要求，需要建立新的数据采集系统，本文介绍了基于PXI Express的分布式托卡马克同步高速数据采集系统的设计与实现，该采集系统由PXIe机箱NI PXIe-1062 Q，PXIe控制器NI PXIe-8133和高速同步数据采集卡NI PXIe-6368，兼容ITER最新的CODAC标准，具有机械密封性好、模块化强、采样率高等特点，对诊断信号进行同步差分采集。数据存储采用核聚变领域通用的数据库MDSplus，测试和实验结果表明，该系统能够以2 MSps的采样率连续稳定地工作，很好地满足了实验装置的运行要求。
With the development of J-TEXT device,the original data acquisition system can't meet the experiment's requirement on stability,modularity and sampling rate,so a new data acquisition system needs to be built.This paper introduces the design and implementation of the distributed Tokamak synchronous high-speed data acquisition system based on PXI Express.The acquisition unit consists of PXIe case NI PXIe-1062Q,PXIe controller NI PXIe-8133and high-speed synchronous data acquisition card NI PXIe-6368,compatible with the latest standard of ITER CODAC,so it has good mechanical sealing,strong modularity and high sampling rate etc.The system takes a synchronous difference acquisition for diagnosis signal. The data storage adopts MDSplus which is the general database in the nuclear fusion field.The test and experimental results show that the system can work continuously and stably at 2MSps sampling rate,and meet the requirement of experiment device's operation well.