The Experts below are selected from a list of 22704 Experts worldwide ranked by ideXlab platform
Huan-feng Duan - One of the best experts on this subject based on the ideXlab platform.
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accuracy and sensitivity evaluation of tfr method for leak detection in multiple Pipeline Water supply systems
Water Resources Management, 2018Co-Authors: Huan-feng DuanAbstract:The transient frequency response (TFR) based pipe leak detection method has been developed and applied to Water Pipeline systems with different connection complexities such as branched and looped pipe networks. Previous development and preliminary applications have demonstrated the advantages of high efficiency and non-intrusion for this TFR method. Despite of the successful validations through extensive numerical applications in the literature, this type of method has not yet been examined systematically for its inherent characteristics and application accuracy under different system and flow conditions. This paper investigates the influences of the analytical approximations and assumptions originated from the method development process and the impacts of different uncertainty factors in practical application systems on the accuracy and applicability of the TFR method. The influence factors considered for the analysis contain system properties, derivation approximations and data measurement, and the Pipeline systems used for the investigation include simple branched and looped multi-pipe networks. The methods of analytical analysis and numerical simulations are adopted for the investigation. The accuracy and sensitivity of the TFR method is evaluated for different factors and system conditions in this study. The results and findings are useful to understand the validity range and sensitivity of the TFR-based method, so as to better apply this efficient and non-intrusive method in practical Pipeline systems.
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sensitivity analysis of a transient based frequency domain method for extended blockage detection in Water Pipeline systems
Journal of Water Resources Planning and Management, 2016Co-Authors: Huan-feng DuanAbstract:AbstractPartial blockages are commonly formed in Water supply Pipelines due to many factors, such as deposition, biofilm, and corrosion in the natural Water supply process, as well as valve throttle in the artificial construction and operation process, which may cause additional energy losses and serious Water supply accidents in the system. Recently, a transient-based frequency domain method (TBFDM) has been developed by the author for extended partial blockage detection, and it was found to be efficient, nonintrusive, and inexpensive to apply. While this method has been validated and applied for numerical and laboratory experiments in previous studies for a variety of blockage and hydraulic conditions, the application results revealed that the accuracy of the TBFDM may be easily affected by uncertainties in the experimental process. This paper investigates the sensitivity of the developed TBFDM to different uncertainty factors that commonly exist in Water Pipeline systems, with perspective to better und...
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uncertainty analysis of transient flow modeling and transient based leak detection in elastic Water Pipeline systems
Water Resources Management, 2015Co-Authors: Huan-feng DuanAbstract:In the transient flow modeling and analysis of practical Water Pipeline systems, discrepancies commonly exist between numerical simulation results and experimental measurement data. Such discrepancies are usually accounted for the inaccuracy and inadequacy of the used mathematical models and/or the lack of understanding of the hydrodynamic physics for transient pipe flows in the literature. However, the variability or uncertainty of the parameters for such numerical model inputs may also attribute to these discrepancies, especially in complex Pipeline systems. This paper investigates the effects of different system uncertainties on the transient flow modeling and analysis such as pipe system design and leak detection. Different factors of pipe and fluid properties as well as system operations and complexities are considered for the uncertainty analysis. The one-dimensional (1D) Water hammer model and the Monte-Carlo simulation (MCS) method are used in this investigation. The analysis results in this study demonstrate that the variability of the transient flow modeling can be easily affected by the uncertainty factors of wave speed and system complexities, while the transient-based leak detection is more sensitive to the uncertainty factors of wave speed and data measurement than the factors of valve operation and initial hydraulic condition.
Hf Duan - One of the best experts on this subject based on the ideXlab platform.
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Sensitivity analysis of a transient-based frequency domain method for extended blockage detection in Water Pipeline systems
American Society of Civil Engineers, 2016Co-Authors: Hf DuanAbstract:Partial blockages are commonly formed in Water supply Pipelines due to many factors, such as deposition, biofilm, and corrosion in the natural Water supply process, as well as valve throttle in the artificial construction and operation process, which may cause additional energy losses and serious Water supply accidents in the system. Recently, a transient-based frequency domain method (TBFDM) has been developed by the author for extended partial blockage detection, and it was found to be efficient, nonintrusive, and inexpensive to apply. While this method has been validated and applied for numerical and laboratory experiments in previous studies for a variety of blockage and hydraulic conditions, the application results revealed that the accuracy of the TBFDM may be easily affected by uncertainties in the experimental process. This paper investigates the sensitivity of the developed TBFDM to different uncertainty factors that commonly exist in Water Pipeline systems, with perspective to better understand and use this efficient and economic method in practice. The methods of first-order second-moment analysis and Monte Carlo simulation are adopted in this paper for the investigation. The obtained results are discussed for the validity range and limitations of current TBFDM for practical applications.Department of Civil and Environmental Engineerin
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Sensitivity analysis of a transient-based frequency domain method for extended blockage detection in Water Pipeline systems
'American Society of Civil Engineers (ASCE)', 2016Co-Authors: Hf DuanAbstract:Partial blockages are commonly formed in Water supply Pipelines due to many factors, such as deposition, biofilm, and corrosion in the natural Water supply process, as well as valve throttle in the artificial construction and operation process, which may cause additional energy losses and serious Water supply accidents in the system. Recently, a transient-based frequency domain method (TBFDM) has been developed by the author for extended partial blockage detection, and it was found to be efficient, nonintrusive, and inexpensive to apply. While this method has been validated and applied for numerical and laboratory experiments in previous studies for a variety of blockage and hydraulic conditions, the application results revealed that the accuracy of the TBFDM may be easily affected by uncertainties in the experimental process. This paper investigates the sensitivity of the developed TBFDM to different uncertainty factors that commonly exist in Water Pipeline systems, with perspective to better understand and use this efficient and economic method in practice. The methods of first-order second-moment analysis and Monte Carlo simulation are adopted in this paper for the investigation. The obtained results are discussed for the validity range and limitations of current TBFDM for practical applications.Department of Civil and Environmental Engineering2015-2016 > Academic research: refereed > Publication in refereed journa
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Multiple-fault detection in Water Pipelines using transient-based time-frequency analysis
International Water Association Publishing, 2016Co-Authors: Sun J, Wang R, Hf DuanAbstract:Pipe faults, such as leakage and blockage, commonly exist in Water Pipeline systems. It is essential to identify and fix these failures appropriately in order to reduce the risk of Water pollution and enhance the security of Water supply. Recently, transient-based detection methods have been developed for their advantages of non-intrusion, efficiency and economics compared to traditional methods. However, this method is so far limited mainly to simple Pipelines with a single known type of pipe fault in the system. This paper aims to extend the transient-based method to multiple-fault detection in Water Pipelines. For this purpose, this study introduced an efficient and robust method for transient pressure signal analysis - a combination of the empirical mode decomposition and Hilbert transform - in order to better identify and detect different anomalies (leakage, blockage and junction) in Pipelines. To validate the proposed transient-based time-frequency analysis method, laboratory experimental tests were conducted in this study for a simple Pipeline system with multiple unknown types of pipe faults including leakages, blockages and junctions. The preliminary test results and analysis indicate that multiple pipe faults in simple Pipelines can be efficiently identified and accurately located by the proposed method.Department of Civil and Environmental Engineerin
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Multiple-fault detection in Water Pipelines using transient-based time-frequency analysis
'IWA Publishing', 2016Co-Authors: Sun J, Wang R, Hf DuanAbstract:Pipe faults, such as leakage and blockage, commonly exist in Water Pipeline systems. It is essential to identify and fix these failures appropriately in order to reduce the risk of Water pollution and enhance the security of Water supply. Recently, transient-based detection methods have been developed for their advantages of non-intrusion, efficiency and economics compared to traditional methods. However, this method is so far limited mainly to simple Pipelines with a single known type of pipe fault in the system. This paper aims to extend the transient-based method to multiple-fault detection in Water Pipelines. For this purpose, this study introduced an efficient and robust method for transient pressure signal analysis - a combination of the empirical mode decomposition and Hilbert transform - in order to better identify and detect different anomalies (leakage, blockage and junction) in Pipelines. To validate the proposed transient-based time-frequency analysis method, laboratory experimental tests were conducted in this study for a simple Pipeline system with multiple unknown types of pipe faults including leakages, blockages and junctions. The preliminary test results and analysis indicate that multiple pipe faults in simple Pipelines can be efficiently identified and accurately located by the proposed method.Department of Civil and Environmental Engineering2016-2017 > Academic research: refereed > Publication in refereed journal201804_a bcm
Syed Manzoor Qasim - One of the best experts on this subject based on the ideXlab platform.
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towards realisation of wireless sensor network based Water Pipeline monitoring systems a comprehensive review of techniques and platforms
Iet Science Measurement & Technology, 2016Co-Authors: Abdulfattah M Obeid, Fatma Karray, Mohamed Wassim Jmal, Mohamed Abid, Syed Manzoor Qasim, Mohammed S BensalehAbstract:Huge quantities of Water are wasted on a daily basis worldwide because of leakages in Water-transporting infrastructures causing Water shortage, injuries, and so on. This problem is typically worsened by the lack of advanced monitoring systems. In this respect, wireless sensor networks (WSNs) have revolutionised Water-monitoring systems providing reliable inspection, feasible communication and performing applications. This study presents a comprehensive survey on software and hardware solutions proposed in the literature for Water Pipeline infrastructure monitoring. In fact, several leak detection and localisation techniques like acoustic, ultrasound or pressure ones are studied and evaluated. Several research works tried to implement these techniques using different types of WSN platforms including microcontroller, digital signal processor, application-specific integrated circuit and field programmable gate array. These platforms are reviewed and discussed while highlighting their advantages and drawbacks. Finally, an integrated energy-aware system-on-chip solution using high-performance hardware is proposed to achieve optimal and reliable results.
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a proposed scalable design and simulation of wireless sensor network based long distance Water Pipeline leakage monitoring system
Sensors, 2014Co-Authors: Abdulaziz S Almazyad, Abdulfattah M Obeid, Mohammed S Bensaleh, Yasser M Seddiq, Ahmed M Alotaibi, Ahmed Y Alnasheri, Syed Manzoor QasimAbstract:Anomalies such as leakage and bursts in Water Pipelines have severe consequences for the environment and the economy. To ensure the reliability of Water Pipelines, they must be monitored effectively. Wireless Sensor Networks (WSNs) have emerged as an effective technology for monitoring critical infrastructure such as Water, oil and gas Pipelines. In this paper, we present a scalable design and simulation of a Water Pipeline leakage monitoring system using Radio Frequency IDentification (RFID) and WSN technology. The proposed design targets long-distance aboveground Water Pipelines that have special considerations for maintenance, energy consumption and cost. The design is based on deploying a group of mobile wireless sensor nodes inside the Pipeline and allowing them to work cooperatively according to a prescheduled order. Under this mechanism, only one node is active at a time, while the other nodes are sleeping. The node whose turn is next wakes up according to one of three wakeup techniques: location-based, time-based and interrupt-driven. In this paper, mathematical models are derived for each technique to estimate the corresponding energy consumption and memory size requirements. The proposed equations are analyzed and the results are validated using simulation.
Mohammed S Bensaleh - One of the best experts on this subject based on the ideXlab platform.
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leak detection in Water Pipeline by means of pressure measurements for wsn
International Conference on Advanced Technologies for Signal and Image Processing, 2017Co-Authors: Aya Ayadi, Oussama Ghorbel, Abdelfateh Obeid, Mohammed S Bensaleh, Mohamed AbidAbstract:During the last decade, many types of research have put prominence on the potential feasibility and sustainable management of Water Pipeline leakage. Unlike the traditional methods, using wireless sensors networks is greatly helpful in terms of high performance, low cost and simple exploitation. However, many researchers have concentrated their efforts on solutions based on WSNs for Pipeline monitoring in relation to sensing techniques, mathematical formulation, reading acquisition techniques, and information processing methods. This study investigates various leakage detection formulations based on WSN in order to identify, locate and estimate the leak size. In addition, a computerized techniques based on the analysis of pressure measurement in Water distribution system is presented to find the defective pipe.
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towards realisation of wireless sensor network based Water Pipeline monitoring systems a comprehensive review of techniques and platforms
Iet Science Measurement & Technology, 2016Co-Authors: Abdulfattah M Obeid, Fatma Karray, Mohamed Wassim Jmal, Mohamed Abid, Syed Manzoor Qasim, Mohammed S BensalehAbstract:Huge quantities of Water are wasted on a daily basis worldwide because of leakages in Water-transporting infrastructures causing Water shortage, injuries, and so on. This problem is typically worsened by the lack of advanced monitoring systems. In this respect, wireless sensor networks (WSNs) have revolutionised Water-monitoring systems providing reliable inspection, feasible communication and performing applications. This study presents a comprehensive survey on software and hardware solutions proposed in the literature for Water Pipeline infrastructure monitoring. In fact, several leak detection and localisation techniques like acoustic, ultrasound or pressure ones are studied and evaluated. Several research works tried to implement these techniques using different types of WSN platforms including microcontroller, digital signal processor, application-specific integrated circuit and field programmable gate array. These platforms are reviewed and discussed while highlighting their advantages and drawbacks. Finally, an integrated energy-aware system-on-chip solution using high-performance hardware is proposed to achieve optimal and reliable results.
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a proposed scalable design and simulation of wireless sensor network based long distance Water Pipeline leakage monitoring system
Sensors, 2014Co-Authors: Abdulaziz S Almazyad, Abdulfattah M Obeid, Mohammed S Bensaleh, Yasser M Seddiq, Ahmed M Alotaibi, Ahmed Y Alnasheri, Syed Manzoor QasimAbstract:Anomalies such as leakage and bursts in Water Pipelines have severe consequences for the environment and the economy. To ensure the reliability of Water Pipelines, they must be monitored effectively. Wireless Sensor Networks (WSNs) have emerged as an effective technology for monitoring critical infrastructure such as Water, oil and gas Pipelines. In this paper, we present a scalable design and simulation of a Water Pipeline leakage monitoring system using Radio Frequency IDentification (RFID) and WSN technology. The proposed design targets long-distance aboveground Water Pipelines that have special considerations for maintenance, energy consumption and cost. The design is based on deploying a group of mobile wireless sensor nodes inside the Pipeline and allowing them to work cooperatively according to a prescheduled order. Under this mechanism, only one node is active at a time, while the other nodes are sleeping. The node whose turn is next wakes up according to one of three wakeup techniques: location-based, time-based and interrupt-driven. In this paper, mathematical models are derived for each technique to estimate the corresponding energy consumption and memory size requirements. The proposed equations are analyzed and the results are validated using simulation.
Abdulfattah M Obeid - One of the best experts on this subject based on the ideXlab platform.
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towards realisation of wireless sensor network based Water Pipeline monitoring systems a comprehensive review of techniques and platforms
Iet Science Measurement & Technology, 2016Co-Authors: Abdulfattah M Obeid, Fatma Karray, Mohamed Wassim Jmal, Mohamed Abid, Syed Manzoor Qasim, Mohammed S BensalehAbstract:Huge quantities of Water are wasted on a daily basis worldwide because of leakages in Water-transporting infrastructures causing Water shortage, injuries, and so on. This problem is typically worsened by the lack of advanced monitoring systems. In this respect, wireless sensor networks (WSNs) have revolutionised Water-monitoring systems providing reliable inspection, feasible communication and performing applications. This study presents a comprehensive survey on software and hardware solutions proposed in the literature for Water Pipeline infrastructure monitoring. In fact, several leak detection and localisation techniques like acoustic, ultrasound or pressure ones are studied and evaluated. Several research works tried to implement these techniques using different types of WSN platforms including microcontroller, digital signal processor, application-specific integrated circuit and field programmable gate array. These platforms are reviewed and discussed while highlighting their advantages and drawbacks. Finally, an integrated energy-aware system-on-chip solution using high-performance hardware is proposed to achieve optimal and reliable results.
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earnpipe a testbed for smart Water Pipeline monitoring using wireless sensor network
Procedia Computer Science, 2016Co-Authors: Fatma Karray, Alberto Garciaortiz, Mohamed Wassim Jmal, Abdulfattah M Obeid, Mohamed AbidAbstract:Abstract Large quantities of Water are wasted daily due to leakages in Pipelines. In order to decrease this waste and preserve Water, advanced systems could be used. In this context, a Wireless Sensor Network (WSN) is increasingly required to optimize the reliability of the inspection and improve the accuracy of the Water Pipeline monitoring. A WSN solution is proposed in this paper with a view to detecting and locating leaks for long distance Pipelines. It combines powerful leak detection and localization algorithms and an efficient wireless sensor node System on Chip (SoC) architecture. In fact, a novel hybrid Water Pipeline Monitoring (WPM) method has been proposed using Leak detection Predictive Kalman Filter (LPKF) and Modified Time Difference of Arrival (TDOA) method based on pressure measurements. The data collected from sensors are filtered, analyzed and compressed with the same Kalman Filter (KF) based algorithm instead of using various algorithms that deeply damage the battery of the node. The local low power pre-processing is efficient to save the power of the sensor nodes. Moreover, a laboratory testbed has been constructed using plumbing components and validated by an ARM-based prototyping platform with pressure sensors.
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a proposed scalable design and simulation of wireless sensor network based long distance Water Pipeline leakage monitoring system
Sensors, 2014Co-Authors: Abdulaziz S Almazyad, Abdulfattah M Obeid, Mohammed S Bensaleh, Yasser M Seddiq, Ahmed M Alotaibi, Ahmed Y Alnasheri, Syed Manzoor QasimAbstract:Anomalies such as leakage and bursts in Water Pipelines have severe consequences for the environment and the economy. To ensure the reliability of Water Pipelines, they must be monitored effectively. Wireless Sensor Networks (WSNs) have emerged as an effective technology for monitoring critical infrastructure such as Water, oil and gas Pipelines. In this paper, we present a scalable design and simulation of a Water Pipeline leakage monitoring system using Radio Frequency IDentification (RFID) and WSN technology. The proposed design targets long-distance aboveground Water Pipelines that have special considerations for maintenance, energy consumption and cost. The design is based on deploying a group of mobile wireless sensor nodes inside the Pipeline and allowing them to work cooperatively according to a prescheduled order. Under this mechanism, only one node is active at a time, while the other nodes are sleeping. The node whose turn is next wakes up according to one of three wakeup techniques: location-based, time-based and interrupt-driven. In this paper, mathematical models are derived for each technique to estimate the corresponding energy consumption and memory size requirements. The proposed equations are analyzed and the results are validated using simulation.
