为了准确快速地采集等离子体I-V特性数据,设计了一个双通道同步数据采集系统.详细阐述了系统的功能、结构和具体实现过程.系统由ARM、FPGA、双通道ADC、两片高速FIFO和USB 2.0控制器组成,可实现对双通道信号的同步采集,并对采集数据进行准确地缓存处理和高速传输.实验分析结果表明,该系统达到了预期设计要求.%In order to rapidly and precisely collect the Ⅰ-Ⅴ characteristics of plasma, the dual channel synchronous data acquisition system has been designed.The functions, structure, and specific implementation process of the system are described in detail.The system is composed of ARM, FPGA, dual channel ADC, two of the high speed FIFO and USB 2.0 controller for implementing synchronous collection of signals from dual channel and precise buffering and high speed transmission of the data collected.The experimental analysis shows that the system reaches predictive design requirement.
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