基于小波变换的岩体声发射源定位研究

Research on Location of Acoustic Emission Source in Rock-mass Based on Wavelet Transform

为了对岩体声发射源进行定位,提出先用小波变换对声发射信号进行滤噪,从而使声发射信号的特征更明显,然后利用快速三维定位算法对声源进行比较准确的定位。多次实验表明,该方法有利于提高声发射信号判断的有效性,也使声源的定位更加快捷和准确。

In order to solve the problem of locating acoustic emis- sion source in rock - mass,wavelet transform is applied into the acoustic emission signals to filtering some noise, which leads to the feature will be more obvious. Then a quick three - dimension acoustic location algorithm is used to calculate the position of acoustic source in a good precision. The results of a numbers of experiment indicated that the presented method is good for effec tively judging acoustic emission signal, can make the locating of acoustic emission source become more efficient, quick and exact.