Optical fiber specklegram sensor for water leak detection and localization

Ogbole C. Inalegwu; Muhammad Roman; Farhan Mumtaz; Bohong Zhang; Anand Nambisan; Jie Huang

doi:10.1117/12.3014056

7 June 2024 Optical fiber specklegram sensor for water leak detection and localization

Ogbole C. Inalegwu, Muhammad Roman, Farhan Mumtaz, Bohong Zhang, Anand Nambisan, Jie Huang

Proceedings Volume 13044, Optical Waveguide and Laser Sensors III; 130440G (2024) https://doi.org/10.1117/12.3014056
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

This work presents a distributed optical fiber specklegram sensor (FSS) specifically designed for the detection and localization of water leaks. The sensor analyzes specklegram images generated by a No-Core Fiber (NCF) under different water leak conditions, employing a low-cost CCD camera as an interrogation unit. To enhance the accuracy of leak detection, a convolutional neural network (CNN) model is employed to post-process the specklegram images for monitoring the different water leak conditions. The sensor demonstrates high sensitivity, accurately detecting water volumes as small as 0.1 mL. In the initial series of experiments, the sensor achieved a remarkable 100% accuracy in predicting the location of leak spots situated 1 cm apart. However, in subsequent rounds of the experiment, a slight reduction in accuracy was observed (87.5%) due to the issue of water droplet overflow across the Kapton tape used to mark the various test leak spots after multiple cycles of water addition and removal. Therefore, employing an impermeable material for the demarcation will mitigate the water droplet overflow problem. In summary, the proposed sensor offers an efficient approach for water leak detection through the application of machine learning-based specklegram analysis. The findings of this research underscore the potential of FSS as a low-cost, easily implementable, and real-time monitoring system for the detection and localization of water leaks.

Conference Presentation

Citation Download Citation

Ogbole C. Inalegwu, Muhammad Roman, Farhan Mumtaz, Bohong Zhang, Anand Nambisan, and Jie Huang "Optical fiber specklegram sensor for water leak detection and localization", Proc. SPIE 13044, Optical Waveguide and Laser Sensors III, 130440G (7 June 2024); https://doi.org/10.1117/12.3014056

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available