Real-time data access layer for MDSplus

被引：2

作者：

Manduchi, G. ^{[1
]}

Luchetta, A. ^{[1
]}

Taliercio, C. ^{[1
]}

Fredian, T. ^{[2
]}

Stillerman, J. ^{[2
]}

机构：

[1] Euratom ENEA Assoc, Consorzio RFX, I-35127 Padua, Italy

[2] MIT, Cambridge, MA 02139 USA

来源：

FUSION ENGINEERING AND DESIGN | 2008年 / 83卷 / 2-3期

关键词：

control systems; data acquisition; real-time applications; real-time operating systems;

D O I：

10.1016/j.fusengdes.2007.08.024

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Recent extensions to MDSplus allow data handling in long discharges and provide a real-time data access and communication layer. The real-time data access layer is an additional component of MDSplus: it is possible to use the traditional MDSplus API during normal operation, and to select a subset of data items to be used in real time. Real-time notification is provided by a communication layer using a publish-subscribe pattern. The notification covers processes sharing the same data items even running on different machines, thus allowing the implementation of distributed control systems. The real-time data access layer has been developed for Windows, Linux, and VxWorks; it is currently being ported to Linux RTAI. In order to quantify the fingerprint of the presented system, the performance of the real-time access layer approach is compared with that of an ad hoc, manually optimized program in a sample real-time application. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：312 / 316

页数：5

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