Acoustic leak localization for water distribution network through time-delay-based deep learning approach

Area of Science:

• Environmental Engineering
• Signal Processing
• Machine Learning

Background:

• Water leakage in distribution networks causes infrastructure damage, economic losses, and public health risks.
• Traditional acoustic leak localization methods struggle with environmental noise and signal distortion.

Purpose of the Study:

• To develop and validate a deep learning-based approach for accurate time delay estimation in acoustic leak localization.
• To enhance the robustness and accuracy of leak detection in water distribution networks, especially under adverse conditions.

Main Methods:

• Utilized deep learning techniques, specifically the Res1D-CNN model, for time delay estimation in acoustic signals.
• Compared the performance of the Res1D-CNN model against traditional methods (GCC-SCOT and BCC) under varying signal-to-noise ratio (SNR) conditions.
• Validated the proposed method's efficacy through empirical field measurements.

Main Results:

• The Res1D-CNN model demonstrated superior performance in low signal-to-noise ratio (SNR) scenarios compared to GCC-SCOT and BCC.
• While performing less effectively than other methods in high SNR conditions, the Res1D-CNN model exhibited robust capabilities in challenging acoustic environments.
• Field measurements confirmed the practical applicability and accuracy of the proposed deep learning approach.

Conclusions:

• The deep learning-based method offers a significant advancement for acoustic leak localization in water distribution networks.
• The Res1D-CNN model's robustness in low SNR environments addresses a key limitation of traditional methods.
• This approach has the potential to substantially improve fault diagnosis, maintenance, and overall management of water distribution systems.