西北林学院学报2017，Vol.32Issue(2)：247-251,300,6.DOI:10.3969/j.issn.1001-7461.2017.02.42
云南松表面声发射信号采集与特征分析
Acquisition and Characteristic Analysis of the Surface of Pinus yunnanensis Acoustic Emission Signal
摘要
Abstract
In order to obtain the acoustic emission signal from the surface of Pinus yunnanensis timber,a multi-channel acoustic emission signal acquisition system based on NI high-speed datum acquisition equipment was constructed.The corresponding acoustic emission signal acquisition and analysis platform were designed,which realized the multi-channel signal acquisition and the reconstruction of the signal from the noise.The system was proved to be effective.By reconstructing the acoustic emission signal from the noise,advantages of wavelet analysis in signal extraction were verified.As an acoustic emission signal processing and analysis platform,it would lay a foundation for the study of acoustic emission signal of wood in the future.关键词
声发射/小波变换/木材/信号Key words
acoustic emission/wavelet transform/timber/signal分类
农业科技引用本文复制引用
于帅帅,申丽娟,李杨,李明..云南松表面声发射信号采集与特征分析[J].西北林学院学报,2017,32(2):247-251,300,6.基金项目
国家自然科学基金项目(31100424) （31100424）
西南林业大学科技创新基金(C15029). （C15029）
