The Enhancement of Leak Detection Performance for Water Pipelines through the Renovation of Training Data

• Published in: Sensors (Basel, Switzerland) Switzerland), 2020-04, Vol.20 (9), p.2542
• Main Authors: Luong, Tu T N, Kim, Jong-Myon
• Format: Article
• Language: English
• Subjects: Accuracy; Acoustic emission; acoustic emission signals; Acoustics; Datasets; Decomposition; Defects; Environmental protection; intelligent leak detection; Leak detection; Methods; Noise; Pinholes; Pipelines; Renovation & restoration; Shannon entropy; Signatures; Software; statistical parameters; support vector machine; Support vector machines; Water management; Water pipelines; Water resources; Water shortages; Water supply; wavelet denoising; Wavelet transforms
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s20092542

Leakage detection is a fundamental problem in water management. Its importance is expressed not only in avoiding resource wastage, but also in protecting the environment and the safety of water resources. Therefore, early leak detection is increasingly urged. This paper used an intelligent leak detection method based on a model using statistical parameters extracted from acoustic emission (AE) signals. Since leak signals depend on many operation conditions, the training data in real-life situations usually has a small size. To solve the problem of a small sample size, a data improving method based on enhancing the generalization ability of the data was proposed. To evaluate the effectiveness of the proposed method, this study used the datasets obtained from two artificial leak cases which were generated by pinholes with diameters of 0.3 mm and 0.2 mm. Experimental results show that the employment of the additional data improving block in the leak detection scheme enhances the quality of leak detection in both terms of accuracy and stability.