中文摘要：

等离子体位形控制是HT-7托卡马克中的重要控制任务，其中等离子位形的重建是由实时平衡反演程序EFIT计算得来；为获得EFIT程序需要的等离子体诊断参数，介绍一种基于CompactPCI总线的数据采集实现方法，详细描述了采用该总线采集卡ACQ196的采集系统的硬件结构和软件原理；实验结果表明，该套系统高速、实时、高精度、同步地完成了等离子诊断数据的采集任务，为精确的等离子位行获得和控制提供良好的基础。

英文摘要：

Controlling plasma shape is one of the most important task in the HT--7 tokamak, Then rebuilding plasma shape depend on realtime EFIT programme. For getting data of plasma diagnosis, this paper introduce a realization of the data acquisition based on CampactPCI bus, present the hardware and software structure of this data acquisition system with card ACQ196. Result of this experiment shows： the system acquire data of plasma diagnoses high speed, real time. high accuracy and synchronously. For rebuilding plasma shape and con trolling plasma position precisely provide well foundation.