Negative pressure waves (NPWs) in pressure measurements can be an indication of pipeline leakage.
压力曲线上的负压波是管道泄漏的征兆。
Taking the negative pressure wave produced by pipeline leakage as a transient signal, the multi scale wavelet transform can be utilized to identify the pipeline leakage signal in local.
利用多尺度小波变换，把管道泄漏产生的负压波信号作为瞬态信号，来识别管道的局部泄漏特征。
The data handling to the whole system is taking a decisive factor in the negative pressure wave law leakage checkout system, and can influence the accuracy and the precision of this system.
在负压波法泄漏检测系统中，数据处理对整个系统起着决定性作用，影响着对泄漏事件的判别准确性和泄漏点定位的精度。
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