The Compression Algorithm for the Data Acquisition System in HT-7 Tokamak

被引：0
|
作者：
朱琳
罗家融
李贵明
岳冬利
机构：
[1] China
[2] Chinese Academy of Sciences
[3] Hefei 230031
[4] Institute of Plasma Physics
来源：
Plasma Science & Technology | 2003年 / 05期
关键词：
data compression algorithm; HT-7; tokamak;
D O I：
暂无
中图分类号：
O532 [约束与加热];
学科分类号：
070204 ;
摘要：
HT-7 superconducting tokamak in the Institute of Plasma Physics of the Chinese Academy of Sciences is an experimental device for fusion research in China. The main task of the data acquisition system of HT-7 is to acquire, store, analyze and index the data. The volume of the data is nearly up to hundreds of million bytes. Besides the hardware and software support, a great capacity of data storage, process and transfer is a more important problem. To deal with this problem, the key technology is data compression algorithm. In the paper, the data format in HT-7 is introduced first, then the data compression algorithm, LZO, being a kind of portable lossless data compression algorithm with ANSI C, is analyzed. This compression algorithm, which fits well with the data acquisition and distribution in the nuclear fusion experiment, offers a pretty fast compression and extremely fast decompression. At last the performance evaluation of LZO application in HT-7 is given.
引用
收藏
页码：1939 / 1944
页数：6
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