SABIR Meftah
مفتاح صابر
sabir.meftah@univ-msila.dz
0669422309
- Departement of ELECTRONICS
- Faculty of Technology
- Grade PHd
About Me
Location
Msila, Msila
Msila, ALGERIA
Code RFIDE- 1996-08-11 00:00:00
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SABIR Meftah birthday
- 2023-07-15
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2023-07-15
Design of leaks detection and localization in WDNs based on LabVIEW and pressure signals
Water distribution networks around the world suffer from leaks. These are due to the movements of various agents such as ground movements, and vibrations caused by road traffic without forgetting the nature of the ground. For this, permanent control is needed. In this work, we have developed a LabVIEW interface for the acquisition and processing of signals received from pressure transmitters. A Wifi system for transmitting and receiving signals from the pressure transmitters is used. To analyze signals to remotely detect anomalies that may occur on the network. The work is divided into two parts: a practical or hard part and a soft part. The hard one is used to obtain the signals containing the leakage information. The soft part is based on the application of signal processing techniques for the detection and location of the exact position of the leakage and therefore minimize the amount of water that is lost.
Citation
Sabir MEFTAH , ,(2023-07-15), Design of leaks detection and localization in WDNs based on LabVIEW and pressure signals,INTERNATIONAL CONFERENCE ON NONLINEAR SCIENCE AND COMPLEXITY, 2023,Istanbul-Turkey
- 2023-07-15
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2023-07-15
DWT and STFT applied to Detect and locate leaks in WDNs
Water is a precious, sometimes scarce resource that is crucial for all kinds of life. In the last two decades, the water demand has far exceeded the supply in many countries. It is also worth mentioning that distribution networks are constantly increasing. According to an international study 20-50% of the produced quantities are lost due to leaks. These leaks can cause significant economic losses and multiple water contaminations that are carried as a major health risk for the citizen. Therefore, network managers are always looking for fast and inexpensive harmless leak detection systems. The rapid detection of a leak in underground pipes is widely taken into account in the performance evaluation of water supply systems. In addition, detection methods should not interfere with the normal operation of water transport. To minimize the effect of false alarms (FA) that have a costly effect on infrastructure. These false alarms are produced by the use of the most widely used acoustic detectors in the world, which are usually based on the signal correlation technique to know the exact location of the leak in relation to one of the sensors. In this work, we present a new leak detector applied to a prototype pipe using highly sensitive pressure transmitters. For this purpose, we have applied the wavelet technique (DWT) for denoising our non-stationary signals from these transmitters. The STFT (Short time Fourier transform) will be used for the analysis of these non-stationary and non-linear signals coming from the leaks to know the exact position of the leak. Validation tests have proven the efficiency of our detector.
Citation
Sabir MEFTAH , ,(2023-07-15), DWT and STFT applied to Detect and locate leaks in WDNs,INTERNATIONAL CONFERENCE ON NONLINEAR SCIENCE AND COMPLEXITY, 2023,Istanbul-Turkey
- 2023-04-17
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2023-04-17
RNL used for the verification of the efficiency of a localization model in a real WDNs
Water distribution systems (WDNs) suffer from leakage problems. The latter can cause damage to infrastructure and also act on public health by the penetration of microbes of waterborne diseases transmissible through the orifices of leaks as soon as a drop in pressure occurs. For this purpose, the network managers always look for the best devices to detect and locate in time the anomaly of the networks as soon as it appears. To realize a system of detection and location of leakage a prototype circuit was realized equipped with pressure sensors and a system of acquisition based on a Digital Signal Processor (DSP). Pressure measurements for specific distances were carried out. A digital filter was applied for denoising. Pairs of pressure values before and after leakage are applied to a mathematical model for localization. We opted to use nonlinear regression (RNL) for the determination of non-measurable physical parameters based on pre-localized leak positions. Validation tests are performed to demonstrate the effectiveness of the model. In our study, a divergence of the model used was found.
Citation
Sabir MEFTAH , ,(2023-04-17), RNL used for the verification of the efficiency of a localization model in a real WDNs,The 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),msila
- 2022-11-27
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2022-11-27
S.G Filter And Speed of Pressure Wave Applied to locate leak in water pipe networks
Abstract: The design of leak detection systems that occur on water pipes is a priority area of applied research that has an economic and health impact on the future of any nation. The various control systems and tools that currently exist throughout the world are designed to ensure permanent and effective monitoring of natural resources that have become rare and precious. The determining factor for the choice of a good detector is the cost in the first place, flexibility, and speed of processing. In this work, the basic idea is to simultaneously acquire from a new inexpensive electronic device two signals from two pressure transmitters installed on a prototype pipe carried out at the laboratory. These signals are usually immersed in noise. For this, denoising by an appropriate digital filter is indispensable. In our case, the Savitzky-Golay filter (S.G) presents its efficiency. The denoising performances are obtained from the calculation of SNR. The denoised signals are analysed to confirm the presence of the leak in the case of its existence. Mathematical equations are applied to determine the exact position of the leak with regards to one of the sensors. Validation tests are required to determine the position of the leak when the difference time between the signals is known.
Citation
Sabir MEFTAH , ,(2022-11-27), S.G Filter And Speed of Pressure Wave Applied to locate leak in water pipe networks,Conference: 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),msila
- 2022-09-25
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2022-09-25
Leak detection and localization in under water distribution pipeline network
The pipeline system is the most important part in transportation of potable water. As water is the most important element of life, any loss in it is a great loss to the State and to mankind. One of the important reasons for the loss of the resulting grip in the pipes a cause. This requires rapid intervention in order to determine the exact location of the holes as quickly as possible, which requires the availability of possibilities and experts in the field.. There are several leak detection systems, The most useful method is leak detection using the Acoustic Correlation System.
Citation
Sabir MEFTAH , ,(2022-09-25), Leak detection and localization in under water distribution pipeline network,JDE'2022,msila
- 2022
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2022
Parameterization and Validation of the Physical Coefficients of a WDNs by BBO
-The pipeline system is the most important part of the transportation of potable water. In other words, pipes are the most important component of the water distribution system. Because of several factors, they suffer from holes in which water is lost, and therefore an economic loss to states and humanity. Responsible for the water distribution networks always try to minimize the damage. By working to find the most effective way to detect leaks in these networks. This article centers on a mathematical model of a hydraulic system that aims to locate leakage in water transmission pipes. Several optimization techniques can be used. We opted for the BBO (biogeography-based optimization) method because of its performance, in particular the execution time of its algorithm. Using this method, two parameters of the model (friction and effective flow area factor) are determined to obtain the exact position of the leak.
Citation
Sabir MEFTAH , ,(2022), Parameterization and Validation of the Physical Coefficients of a WDNs by BBO,The 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE),msila
- 2019-06-09
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2019-06-09
Commande d’un Onduleur Monophasé avec Elimination d’Harmonique à base du Microcontrôleur PIC 18F4431
Un onduleur est un convertisseur statique assurant la conversion d’énergie électrique de la forme continue (DC) à la forme alternative (AC). En fait, cette conversion d'énergie est satisfaite au moyen d'un dispositif de commande (semi-conducteurs). Il permet d’obtenir aux bornes du récepteur une tension alternative réglable en fréquence et en valeur efficace, en utilisant ainsi une séquence adéquate de commande (voir Figure. 1. 1). Cette tension peut comporter un ou plusieurs créneaux par alternance suivant quil sagit dune commande à un créneau par alternance ou dune commande MLI (Modulation de Largeur dImpulsions)
Citation
SabirMEFTAH , ,(2019-06-09); Commande d’un Onduleur Monophasé avec Elimination d’Harmonique à base du Microcontrôleur PIC 18F4431,Université Mohamed Boudiaf - M'sila,