The Research of Self-adaptive Data Acquisition and Encryption System Based on FPGA

摘要：

Sampling frequency is important to Storage-testing Instrument.How to choose self-adaptive sampling frequency on the basis of precision testing and integrated signal is always an important research topic on Testing Instrument research.This paper introduces a self-adaptive sampling frequency method and encryption process based on Real-time and Lossless Data Compression.It proposes the ideas that how to do real data compression in hardware circuit and do data encryption in the dictionary processing based on LZW after analyzing the algorithm.LZW (Lemple-Ziv-Welch) data compression is chosen in the research.The program is written in VHDL (Verilog Hardware Description Language).The logic circuit of Data Compression is integrated by FPGA (Field Programmable Gate Array).Experiments results prove that the module of self-adaptive sampling frequency can be applied to this system,and the range of self-adaptive sampling frequency is 50 kHz-5MHz.

关键词： Data acquisition LZW self-adaptive sampling frequency Data encryption.

作者: Yuan Zhongyun Pei Dongxing Zhao chun

作者单位: Key Laboratory of Instrumentation Science & Dynamic Measurement (North University of china),Ministry Key Laboratory of Instrumentation Science & Dynamic Measurement (North University of china),Ministry

会议类型: 国际会议

会议名称: International Conference on Modelling,Identification and Control(模拟、鉴定、控制国际会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）