摘要
由石油管道泄漏引发的负压波传播到泄露点上游和下游的监测点时,会使该点的压力信号产生一个幅度较大的震荡,伴随震荡曲线将会产生一些噪声干扰。针对这一现象,将管道监测点采集到的压力信号,采用小波变换和中值滤波相结合的方法,在MATLAB软件环境下进行去噪仿真实验,最后得出该方法可以很好地去除负压波信号中的干扰。
Because the negative pressure caused by oil pipeline leak wave propagation to the monitoring point of leak point of the upstream and downstream,may make the point pressure signal to produce a larger shocking,with the shock curve it will produce some noise.Contrary to this phenomenon,getting pressure signal collected by pipeline monitoring sites,combining wavelet transform and median filtering method,the denoising simulation experiments under in the MATLAB software surrounding are carried out,the conclusion are made that the method can remove the interference in negative pressure wave signal well.
出处
《科学技术与工程》
2011年第7期1601-1604,1612,共5页
Science Technology and Engineering
关键词
管道泄漏
负压波
小波变换
中值滤波
MATLAB
干扰
pipeline leakage negative pressure wave wavelet transform median filter MATLAB interference
