一个分布式数据采集与处理系统

A DISTRIBUTED DATA ACQUISITION AND PROCESSING SYSTEM

针对中国环流新一号ＨＬ—１Ｍ受控核聚变装置实验对实时数据获取和处理的要求，开发了一个专用分布式实时数据采集和处理系统。系统有效地利用了网络的快速传送和数据吞吐能力，充分地发挥分布处理功能，使实时响应和数据处理能力大大提高。每次放电采集数据量达２０ＭＢ以上，实时处理并显示结果，数据曲线可在３０秒内完成在过处理将５—７ＭＢ数据存入数据库保存供脱机分析用，并在两次放电间隙完成近４００个通道数据曲线的硬拷贝。

e have upgraded a stand-alone data acquisition and processing system(DAS) and developed a distributed DAS system. It is a special-purpose system of TOKANAK experiment. Based on a DECnet computer networks and its capability of supporting distributed computation, the system is reliable and could get very quick responses. It takes only 30 sec. to acquired more than 20MB data from one short (duration 1 sec.), make real-time processing on the data and display the results for near 400 data channels. All coordinated curves for each channel data are hardcopied before next shot. The system has been successfully used and play important roles in IOKAMAK experiments.