基于FPGA的波形数据压缩算法设计与实现  

Design and Implementation of Compression Algorithm for Waveform Data Based on FPGA

作　　者：张成哲 张迎春 曹中清[1] 何肖蒙 鲁彩江 ZHANG Chengzhe;ZHANG Yingchun;LU Caijiang;CAO Zhongqing;GUO Xuanping(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031;China Instrument&Control Society,Beijing 100088;Guizhou Power Grid Co.,Ltd.,Guiyang 550005)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]中国仪器仪表学会,北京100088 [3]贵州电网有限责任公司,贵阳550005

出　　处：《自动化与仪器仪表》2022年第12期1-5,共5页Automation & Instrumentation

摘　　要：波形信号在高采样频率下产生的大量数据,对数据存储和传输都提出了极大的挑战,并带来了系统功耗和成本的提升,因而需要在采集端对采样数据进行无损压缩。本文通过硬件方式压缩波形数据,针对连续波形特点改进了LZSS压缩算法,使用哈希函数提高算法效率,并优化编码格式。经过实验测试,本文改进的算法相较传统的LZSS算法大大提高了对于波形数据的压缩率,降低了压缩时间,具备一定的实际应用价值。The waveform signal generates a large amount of data at high sampling frequency, which poses a great challenge to data storage and transmission, also brings about the increase in system power and cost. Therefore, the sampled data needs to be lossless compressed at the acquisition edge. In this paper, waveform data is compressed by hardware, LZSS compression algorithm is improved according to the characteristics of continuous waveform, hash function is used to improve the efficiency of algorithm, and the encoding format is optimized. Through experimental tests, the improved algorithm in this paper has greatly improved the compression rate of waveform data and reduced the compression time compared with the traditional LZSS algorithm, which has certain practical application value.

关 键 词：无损压缩 LZSS 哈希函数 FPGA 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]