Fast Leak Detection and Location of Water Pipelines Based Using Orthogonal Wavelet Transform

Water is now considered as an essential resource, which should be managed in an integrated manner. Monitoring of water pipeline is an important task for economical and safe operation, loss prevention and environmental protection due to leak. A leak detection of water pipeline, therefore, plays a key role in the overall integrity monitoring for a pipeline system. Especially for buried water distribution pipes and near to sewage pipes. In this paper, a leak detection and location approach based on transient pressure using cepstrum method in a parallel pipeline is proposed. The technique involves the injection of a pressure wave into the pipeline under investigation and the time domain signals of these pressure transients were obtained using a single pressure transducer. This information first filtered using wavelet in order to remove DC offset and then analysis using cepstrum method. Due to their simplicity and robustness, transient analyses provide a plausible route towards leak detection and gives information about the all features distributed in the pipeline.