基于小波分析的LED芯片非接触检测信号处理
Non-contact fault detection signal processing for LED chip
针对现有LED芯片非接触在线检测系统中存在信号处理方法简单、检测信号信噪比低等问题，本文分析了系统噪声并讨论了处理方法，研究了小波变换对LED非接触检测信号进行消噪的原理和实现过程，对检测信号进行了小波消噪的仿真和实验，并分析了结果数据。实验结果表明，小波分析在LED非接触检测信号消噪中的应用能够有效提高信噪比并切实可行。
s the current LED chip online non-contact fault detection system has shortages on the simply signal processing and low signal-to-noise ratio(SNR) of the detecting signals, this paper has analyzed the noise of detection system and discussed the ways for signal processing. It is investigated that the theory and realization of signal de-noising by wavelet transform. The de-noising of detecting signal is simulated，and the results are also analyzed. The experimental results indicate that using the wavelet analysis for detecting signal de-noising is advantaged to increase the SNR and feasible.
文玉梅、李平、余大海、徐庆、伍会娟
光电子技术电子元件、电子组件电子技术应用
LED非接触检测系统噪声分析小波分析噪声消除
non-contact detecting system for LED chipnoise analysiswavelet analysissignal de-noising
文玉梅,李平,余大海,徐庆,伍会娟.基于小波分析的LED芯片非接触检测信号处理[EB/OL].(2009-05-12)[2025-05-22].http://www.paper.edu.cn/releasepaper/content/200905-263.点此复制
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