Publications internationales

2019
(2019), Viability-Based Guaranteed Safe Robot Navigation. Journal of Intelligent & Robotic Systems Springer Netherlands : Springer Netherlands, https://link.springer.com/content/pdf/10.1007/s10846-018-0955-9.pdf

Résumé: Guaranteeing safe, i.e. collision-free, motion for robotic systems is usually tackled in the Inevitable Collision State (ICS) framework. This paper explores the use of the more general Viability theory as an alternative when safe motion involves multiple motion constraints and not just collision avoidance. Central to Viability is the so-called viability kernel, i.e. the set of states of the robotic system for which there is at least one trajectory that satisfies the motion constraints forever. The paper presents an algorithm that computes off-line an approximation of the viability kernel that is both conservative and able to handle time-varying constraints such as moving obstacles. Then it demonstrates, for different robotic scenarios involving multiple motion constraints (collision avoidance, visibility, velocity), how to use the viability kernel computed off-line within an on-line reactive navigation scheme that can drive the robotic …

(2019), On the Development of a Novel approach for Lung Pathology Diagnosis based on Voice Processing using HMM. International Journal of Advanced Trends in Computer Science and Engineering Volume 8, No.1.4, 2019 : warse IJATCSE, http://www.warse.org/IJATCSE/static/pdf/file/ijatcse5881.42019.pdf

Résumé: ABSTRACT The lung diseases have been examined through two ways: one is noninvasive process, which includes auscultation, pulmonary function test, respiratory inductance plethysmograph, and phonopneumography technique, and the other is invasive approach such as chest X-ray or roentgenogram and computerized tomography (CT) scan, and so forth. The invasive diagnostic procedures are expensive, time consuming, and harmful as in case of X-ray repetition.In this paper, weexplored anoninvasive technique for detecting theabnormal respiration in patients with respiratory pathology (asthma or tuberculosis). To achieve this target, we explained the main characteristics of these pathologies and their effect on patient life. We collected dataset from patient at hospital and other from interent. The main features were selected and classified by two eucledian distance and Hydden Markov Model (HMM). A friendly user interface were developed to help doctors in recording voice, respiration and caugth of paptient then process them on or off line. The user interface helps the doctor in diagnosis of the pathology based on recorede data. As a noninvasive toolsand based on simulation results, we can agree that the proposed design is an aide for doctors to take decision after a breaf consultation based on dialogue and breathing registrations.

2016
(2016), An improved GMM-SVM system based on distance metric for voice pathology detection. Appl. Math Volume: 10 Numéro 3; Pages: 1061-1070 : Appl. Math,

Résumé: As acoustic signal generated from vocal folds is directly affected by vocal tract pathologies, it can be an effective tool for diagnosis purpose. In this work, we present an efficient method for voice pathology detection based on speech signal processing and machine learning techniques. In the proposed method, we used MFCC to represent the signal features, and we chose to combine GMM and SVM classifiers to benefit from their generative and discriminative natures respectively. That is to exploit the similarity function of the RBF kernel to separate the GMM models representing normal and pathological voices. To further improve the separation, we used modified versions of the well known Kullback-leibler and Bhattacharyya distances. The modified distances, unlike the classical ones, do satisfy all metric axioms. As a result, we obtained an improvement of 2% and 4% in terms of sensitivity compared to using the classical Kullback-leibler and Bhattacharyya distances respectively. The Receiver Operating Curve (ROC) does illustrate the efficiency of the proposed method.

(2016), Everyday life sounds database: telemonitoring of elderly or disabled. Journal of Intelligent Systems Volume :25 Numéro 1; Pages: 71-84 : De Gruyter, https://www.degruyter.com/view/j/jisys.2016.25.issue-1/jisys-2014-0110/jisys-2014-0110.xml

Résumé: This article describes the construction phase of a corpus of everyday life sounds for a system of separation and classification of audio sources in a habitat: an application for telemonitoring of the elderly or disabled. We first present the key concepts of the research area, and then we present works and projects that address detection of distress situations and recognition of activities. Thereafter, we discuss the different sounds used in an application for telemonitoring, which inspired us to create our database. Finally, we present our experiment aimed at classifying the various environmental sounds in a habitat. The objective of this experiment is to present the global idea of our future work and to explain the necessity of creating a database of everyday life sounds.

2015
(2015), Ambulatory Health Monitoring System Using Wireless Sensors Node. Procedia Computer Science Volume 65, 2015, Pages 86-94 : Elsevier, https://doi.org/10.1016/j.procs.2015.09.082

Résumé: In this paper, we propose an improvement of our previous work in this field by developing a heart rate, body temperature and blood pressure monitor system based on new Arduino Mega micro-system device. It offers the advantage of portability over old embedded system (tape-based recording systems). The paper focus on: how we implemented algorithms to analyze heart beat rate signals in real-time, how to fusion data of different sensors mainly here temperature and blood pressure and to transmit the data via radio frequency (Xbee module). Then explain a web server application for healthcare givers to access the data. In addition, it allows doctors to get the heart beat rate file of the patient by email every twenty four hours. It can also be used to control patients or athletic person over a long period. The system reads, stores and analyses the heart beat rate signals, body temperature repetitively in real-time. The hardware and software design are oriented towards a single-chip microcontroller-based system, hence minimizing the size. The important features of this paper are the implementation of extremums and energy in the algorithm to compute patient heart rate and detect any anomaly within the P wav in ECG signal. The first tests were encouraging.

2010
(2010), DESIGN AND IMPLEMENTATION OF SENSORS NETWORK FOR AUTOMATIC GREENHOUSE CONTROL. Physical & chemical news Numéro: 56 Pages 102-106 Éditeur Physical and Chemical News : Physical and Chemical News, http://scholar.google.com/scholar?cluster=15093343692034390081&hl=en&oi=scholarr

Résumé: L'objectif du travail consiste à présenter une approche hardware et software dans le but du contrôle des paramètres de serre notamment la température de l'air, l'humidité relative et l'irrigation au moyen de ventilation et enrichissement simultanés. Un ensemble de modules intelligents de sondes, afin de commander et surveiller le système, a été conçu et examiné. Le cœur de la sonde intelligente est un microcontrôleur qui reçoit des données sur les états d'environnement de la serre avec beaucoup de sondes installées à l'intérieur et à l'extérieur. La sonde intelligente transfère les données à et d'un PC par l'intermédiaire d'un système de transmission sans fil. En conséquence, elle change l'état des dispositifs de commande de la serre, les réchauffeurs, les ventilateurs et les injecteurs de vapeur pour atteindre l'état désiré. Un GUI employant un langage de haut niveau a été développé pour effectuer les tâches de surveillance. Le programme met en application les algorithmes de commande comparant les données reçues aux points de réglage, envoyant des signaux de commande aux sondes intelligentes afin d'atteindre les conditions désirées. L'exécution du système conçu a été examinée en l'installant dans la serre modèle avec un ensemble de sondes intelligentes.

2009
(2009), Implementation of a Hybrid Voice Control System for a Colony of Robots.. International Arab Journal of Information Technology (IAJIT)http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.420.9654&rep=rep1&type=pdf

Résumé: In this paper, a voice command system for autonomous robots is proposed as a project. The methodology adopted is based on hybrid techniques used in speech recognition which are zero crossing and extremes with dynamic time warping followed by a decision system based on independent methods test results. To implement the approach on a real time application, a personal computer interface was designed to control the movement of a set of robots by simple voice commands. The voice command system for four autonomous robots is designed. The main parts of the robots are a microcontroller from Microchip PIC16F84 and a radio frequency receiver module.

(2009), Regular paper HMM BASED VOICE COMMAND SOFTWARE AGENT AND HEAD CONTROLLER: A WAY TO COMMAND A MANIPULATOR ARM. journal of automatique and science engineering 2009 : JASE,

Résumé: A voice command software agent (VCSA) and a hardware head controller for a manipulator arm are designed as a part of a research project. The methodology adopted in speech agent is based on a spotted words recognition system based on a robust HMM (Hidden Markov Model) technique with cepstral coefficients as parameters used in automatic speech recognition system. To implement the approach on a real-time application, a Personal Computer parallel port interface was designed to control the movement of a set of stepper motors and to get the security action from head movements. The head controller (HC) is added as a secure control system in case there is any problem with VCSA. The user can control the movements of four degree of freedom (DOF) for a robot arm using a vocal phrase containing spotted words or head controller.

2008
(2008), Microcontroller Based Heart Rate Monitor.. International Arab Journal of Information Technology (IAJIT) : IAJIT, http://www.academia.edu/download/49169562/11-198.pdf

Résumé: This paper describes the development of a heart rate monitor system based on a microcontroller. It offers the advantage of portability over tape-based recording systems. The paper explains how a single-chip microcontroller can be used to analyse heart beat rate signals in real-time. In addition, it allows doctors to get the heart beat rate file of the patient by email every twenty four hours. It can also be used to control patients or athletic person over a long period. The system reads, stores and analyses the heart beat rate signals repetitively in real-time. The hardware and software design are oriented towards a single-chip microcontroller-based system, hence minimizing the size. The important feature of this paper is the use of zero crossing algorithm to compute heart rate. It then processes on real-time the information to determine some heart diseases.

2007
(2007), Speech and sensor in guiding an electric wheelchair. Automatic Control and Computer Sciences : Springer , https://link.springer.com/article/10.3103/S0146411607010063

Résumé: Many people with disabilities do not have the dexterity necessary to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an Electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and avoid obstacles. The methodology adopted is based on grouping a microcontroller with a speech recognition development kit for isolated word from a dependent speaker and a set of sensors. In order to gain in time design, tests have shown that it would be better to choose a speech recognition kit and to adapt it to the application.

(2007), A Navigation Tool for Blind People. Innovations and Advanced Techniques in Computer and Information Sciences and Engineering pp 333-337 : Springer, https://link.springer.com/chapter/10.1007%2F978-1-4020-6268-1_59

Résumé: This paper describes the development of a navigation aid in order to assist blind and visually impaired people to navigate easily, safely and to detect any obstacles. The system is based on a microcontroller with synthetic speech output. In addition, it consists of two vibrators, two ultrasonic sensors mounted on the user’s shoulders and another one integrated into the cane. This aid is able to give information to the blind about urban walking routes and to provide real-time information on the distance of over-hanging obstacles within six meters along the travel path ahead of the user. The suggested system consists then in sensing the surrounding environment via sonar sensors and sending vibro-tactile feedback to the user of the position of the closest obstacles in range. For the ultrasonic cane, it is used to detect any obstacle on the ground.

(2007), Speech and sensor in guiding an electric wheelchair. Automatic Control and Computer Sciences : Allerton Press, Inc. Springer, https://link.springer.com/content/pdf/10.3103/S0146411607010063.pdf

Résumé: Many people with disabilities do not have the dexterity necessary to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an Electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and avoid obstacles. The methodology adopted is based on grouping a microcontroller with a speech recognition development kit for isolated word from a dependent speaker and a set of sensors. In order to gain in time design, tests have shown that it would be better to choose a speech recognition kit and to adapt it to the application.

2005
(2005), Localization of faulty transistor in a three-phase inverter. Asian Journal of Information Technology, 4: 1068-1073. : Search in Medwell, http://www.medwelljournals.com/abstract/?doi=ajit.2005.1068.1073

Résumé: The aim of this study is to develop an accurate model which is able to predict the performance of a three-phase inverter associated to a squirrel cage Induction Motor (IM). The proposed approach is a sensor-based technique using the current measurement. A localization domain illustrated by seven patterns is built with the stator Concordia mean current vector. One pattern corresponds to the healthy domain and the remaining six patterns are linked to the state of each inverter switch.The simulated results and the spectral analysis of the average vector current contours in the Alpha Beta (", $) plan have allowed to investigate the voltage inverter state and to locate unambiguously the damaged switch. A data acquisition system card is proposed for practical tests.

(2005), Design of a voice control system for a disabled person wheelchair. 2005 Revue Asian Journal of Information Technology volume: 4/10 : Asian Journal of Information Technology, http://docsdrive.com/pdfs/medwelljournals/ajit/2005/940-944.pdf

Résumé: Many people with disabilities do not have the dexterity necessary to control a joystick on an electrical wheelchair. The aim of this study is to implement an interesting application using small vocabulary word recognition system. The methodology adopted is based on grouping a microcontroller with a speech recognition development kit for isolated word from a dependent speaker. The resulting design is used to control a wheelchair for a handicapped person based on the vocal command. It therefore involves the recognition of isolated words from a limited vocabulary. In order to gain in time design, tests have shown that it would be better to choose a speech recognition kit and to adapt it to the application. The input of the system is a set of eight words used to control the movement of an Automatic Vehicle Guided (AVG); The output is a corresponding command. The system is developed in order to be installed on the …

Publications nationales

2019
(2019), Hand posture recognition using HOW and homogenous kernel. Synthèse: Revue des Sciences et de la Technologie UBMA : Synthèse: Revue des Sciences et de la Technologie UBMA, https://www.ajol.info/index.php/srst/article/viewFile/186917/176189

Résumé: In this paper, we present a static hand gestures recognition system of Arabic Sign Language alphabets. The proposed method uses Histogram Of visual Words (HOW) descriptor and Support Vector Machine (SVM). First, the images of static hand gestures are converted into HOW features and grouped using k-means clustering to create histograms. Then they are converted from non linear space into linear space using Chi-squared kernel. The result is fed into One-vs-All SVM classifier to build signs models. Training and test stages of this technique are implemented on hand postures images using cluttered backgrounds for different lighting conditions, scales and rotations. The proposed method shows a satisfactory recognition rate and achieves good real-time performance regardless of the image resolution.

Chapitres de livres

2019
(2019), Water Quality Monitoring System Using WSN in Tanga Lake. International Conference on Dependability and Complex Systems : Springer Netherlands, https://link.springer.com/chapter/10.1007/978-3-030-19501-4_1

Résumé: Continuous Lake water quality monitoring is an important tool to a different aspect which includes catchment management authorities, providing real-time data for environmental protection and tracking pollution sources in lakes around ANNABA reagent. In order to assist catchment managers to maintain the health of aquatic ecosystems taking into consideration a cost-effective water quality data collection a low-cost low power system is proposed. The proposed system is constituted by spreading the sensor nodes and the base station. The nodes and base stations are linked using WSN technology (e.g. Zigbee). Base stations will be connected to the Internet using the Ethernet shield. The results indicate that a reliable monitoring system can be designed with appropriate calibration of sensors; this will allow us to continue monitoring the quality of the water at higher spatial resolution.

2017
(2017), Failure detection on wireless sensor network based on comparative study. International Conference on Recent Innovations in Signal processing and Embedded Systems (RISE) : IEEE, https://ieeexplore.ieee.org/abstract/document/8378140/

Résumé: In this paper, we present a comparative study on the main faults in a Wireless Sensor Networks (WSN) system. The applications using this new technology have recently been increased due to its huge capacity to connect both the physical and the virtual worlds. WSNs allow assessing locations, which are technically hard to reach by robots or human. With Cloud computing added to the WSN, we expect to see a world covered with trillions of connected devices that sense and share data information with each other. However, many parts of the deployments experience high rates of failure due to node's damage, sensor's damage, RF communication and usually power failure. In this paper, we mentioned existing research works that deal with failure detection in the WSN. Eventually, we presented a comparative case-study of model-based approaches used for failure detection. We also mentioned popular simulation …

(2017), Failure detection on wireless sensor network based on comparative study. 2017 International Conference on Recent Innovations in Signal processing and Embedded Systems (RISE) : IEEE,

Résumé: In this paper, we present a comparative study on the main faults in a Wireless Sensor Networks (WSN) system. The applications using this new technology have recently been increased due to its huge capacity to connect both the physical and the virtual worlds. WSNs allow assessing locations, which are technically hard to reach by robots or human. With Cloud computing added to the WSN, we expect to see a world covered with trillions of connected devices that sense and share data information with each other. However, many parts of the deployments experience high rates of failure due to node's damage, sensor's damage, RF communication and usually power failure. In this paper, we mentioned existing research works that deal with failure detection in the WSN. Eventually, we presented a comparative case-study of model-based approaches used for failure detection. We also mentioned popular simulation

2016
(2016), Remote monitoring system for solar power panels using intelligent sensors network. 2016 24th Telecommunications Forum (TELFOR) : IEEE,

Résumé: Improving pre-installed monitoring system for a set of Photovoltaic (PV) panels, using wireless sensor network (WNS) with embedded fuzzy controller, is our contribution in this work in order to control and detect faults within solar panels that affect considerably the energy produced by the solar panels. The new solution is to integrate the detection and classification of faults within the sensors node. The proposed classifier based on Fuzzy logic controller is integrated within the Node. The WSN nodes are implemented with appropriate sensors for more often occurred faults on the solar power panels. A simulation has been done on nodes distribution and a study for the design of a node with appropriate sensors taking into account the priorities of the processing faults. The primary results of simulation are very encouraging in point of fast detection of faults with minimum computation and minimum data transmission.

(2016), Multiclass SVM/HMM Vowels Recognition System Towards Improving Human Computer Interaction. International Conference on Dependability and Complex Systems : Springer Netherlands,

Résumé: In this paper, we present experimental results on using vowels and one syllable words (VOSW) to activate some input device such as the control of mouse pointer on the screen. This type of Human Computer Interface might be used by a category of disabled person such as upper arm and finger stroke. Our goal is to design a system for the control of mouse cursor based on voice input command, using the pronunciation of certain vowels and some syllable words which can be produced even by persons affected by chronic inflammation of the larynx and vocal fold nodules. Linear predictive coefficients (LPC) and Mel Frequency Cepstral Coefficients (MFCCs) with derivatives are selected as features. Multiclass SVM then Hidden Markov Models (HMMs) have been tested as classifiers for matching components (vowels and short words). Tests and results using different features were are presented on tables, then …

2015
(2015), Ambulatory Health Monitoring System Using Wireless Sensors Node. Procedia Computer Science Volume :65 Pages86-94 Éditeur: Elsevier : Elsevier, https://www.sciencedirect.com/science/article/pii/S1877050915029129/pdf?md5=a4db9eb146aa09f05b8484267ba799a2&pid=1-s2.0-S1877050915029129-main.pdf&_valck=1

Résumé: In this paper, we propose an improvement of our previous work in this field by developing a heart rate, body temperature and blood pressure monitor system based on new Arduino Mega micro-system device. It offers the advantage of portability over old embedded system (tape-based recording systems). The paper focus on: how we implemented algorithms to analyze heart beat rate signals in real-time, how to fusion data of different sensors mainly here temperature and blood pressure and to transmit the data via radio frequency (Xbee module). Then explain a web server application for healthcare givers to access the data. In addition, it allows doctors to get the heart beat rate file of the patient by email every twenty four hours. It can also be used to control patients or athletic person over a long period. The system reads, stores and analyses the heart beat rate signals, body temperature repetitively in real-time. The …

(2015), Ambulatory Health Monitoring System Using Wireless Sensors Node. Procedia Computer Science : Elsevier,

Résumé: In this paper, we propose an improvement of our previous work in this field by developing a heart rate, body temperature and blood pressure monitor system based on new Arduino Mega micro-system device. It offers the advantage of portability over old embedded system (tape-based recording systems). The paper focus on: how we implemented algorithms to analyze heart beat rate signals in real-time, how to fusion data of different sensors mainly here temperature and blood pressure and to transmit the data via radio frequency (Xbee module). Then explain a web server application for healthcare givers to access the data. In addition, it allows doctors to get the heart beat rate file of the patient by email every twenty four hours. It can also be used to control patients or athletic person over a long period. The system reads, stores and analyses the heart beat rate signals, body temperature repetitively in real-time. The …

2009
(2009), Toward a hybrid technique to enhance vocal guiding system for a manipulator Arm” TR45”. 2009 4th International Design and Test Workshop (IDT) : IEEE, https://www.researchgate.net/profile/Mohamed_Fezari/publication/251917964_Toward_a_hybrid_technique_to_enhance_vocal_guiding_system_for_a_manipulator_ArmTR45/links/54f1c1f40cf2b36214acceec.pdf

Résumé: In order to improve the rate of recognition for robots, a voice guiding system for a robot arm (manipulator) is designed as a part of a research project within the laboratory LAZA (ANNABA). The paradigm adopted is based on a combination of classical techniques used in automatic speech recognition system. To implement the approach on a real-time application, a personal computer interface was designed to control the movements of a four degree of freedom (DOF) didactic robot arm by transmitting the commands using wireless circuits. For a better rate of recognition, a pre-processing step for the speech signal based on Kalman filter is added. The voice command system for the robot arm is designed. The main parts of the robot are a microcontroller from microchip PIC16F84 and a radio frequency receiver module. The possibilities to control other parts of the automatic arm are investigated.

(2009), Wireless voice command system based on Kalman filter and HMM models to control manipulator arm. 2009 4th International Design and Test Workshop (IDT) : IEEE, http://www.academia.edu/download/43443655/Wireless_voice_command_system_based_on_K20160306-9605-1fpoby4.pdf

Résumé: he aim of this work is to implement on real-time a speech recognition module in order to control the movements of a five degree of freedom manipulator arm using a Kalman filter as a selector in noisy environment and HHM model to recognise 12 Arabic spotted words. The methodology adopted is based on detecting and spotting vocabulary words within a phrase generated by user, the system recognises the spotted words using Kalman filter to select these spotted words then a robust HMM (hidden Markov model) technique with cepstral coefficients to improve the recognition rate. To implement the approach on a real-time application, a personal computer parallel port interface was designed to control the movement of a set of stepper motors. The user can control the movements of five degree of freedom (DOF) for a robot arm using a vocal phrase containing spotted words.

2005
(2005), A navigation system for blind pedestrians. IFAC Proceedings Volumes 38 : Elsevier, http://www.nt.ntnu.no/users/skoge/prost/proceedings/ifac2005/Fullpapers/02639.pdf

Résumé: An electronic travel aid is a form of assistive technology having the purpose of enhancing mobility for the blind. This paper describes the development of a microcontroller based navigation system for blind pedestrians. It is a portable, self contained portable electronic system that will allow visually impaired individuals to travel through familiar and unfamiliar environments without the assistance of guides. In addition, this system can supply the blind person with assistance about walking routes by using coded sounds to point out what decisions to make.

Communications internationales

2019/8/15
(2019/8/15), Viability-Based Guaranteed Safe Robot Navigation. Journal of Intelligent & Robotic Systems : Springer Netherlands, https://link.springer.com/content/pdf/10.1007/s10846-018-0955-9.pdf

Résumé: Guaranteeing safe, i.e. collision-free, motion for robotic systems is usually tackled in the Inevitable Collision State (ICS) framework. This paper explores the use of the more general Viability theory as an alternative when safe motion involves multiple motion constraints and not just collision avoidance. Central to Viability is the so-called viability kernel, i.e. the set of states of the robotic system for which there is at least one trajectory that satisfies the motion constraints forever. The paper presents an algorithm that computes off-line an approximation of the viability kernel that is both conservative and able to handle time-varying constraints such as moving obstacles. Then it demonstrates, for different robotic scenarios involving multiple motion constraints (collision avoidance, visibility, velocity), how to use the viability kernel computed off-line within an on-line reactive navigation scheme that can drive the robotic …

(2019), Water Quality Monitoring System Using WSN in Tanga Lake. International Conference on Dependability and Complex Systems Springer, Cham : Springer, Cham, https://link.springer.com/chapter/10.1007/978-3-030-19501-4_1

Résumé: Continuous Lake water quality monitoring is an important tool to a different aspect which includes catchment management authorities, providing real-time data for environmental protection and tracking pollution sources in lakes around ANNABA reagent. In order to assist catchment managers to maintain the health of aquatic ecosystems taking into consideration a cost-effective water quality data collection a low-cost low power system is proposed. The proposed system is constituted by spreading the sensor nodes and the base station. The nodes and base stations are linked using WSN technology (e.g. Zigbee). Base stations will be connected to the Internet using the Ethernet shield. The results indicate that a reliable monitoring system can be designed with appropriate calibration of sensors; this will allow us to continue monitoring the quality of the water at higher spatial resolution.

(2019), SCADA Attack Modeling Using Bond Graph. ICTDM 2019 Pars, France : ICTDM-19, https://ict-dm2019.esiee.fr/

Résumé: Abstract— Industrial control systems (ICSs) integrates supervisory control and data acquisition (SCADA), distributed control system (DCS) and programmable logic controllers (PLC) operating on critical infrastructures. Both ICS and SCADA present an attractive target for attackers due to their increasing interconnectivity to the internet. So, it is so essential to develop a security mechanism appropriate to the context of industrial systems to avoid or reduce the identified risks. This paper is concerned with the modeling of SCADA cyber-attacks that change sensor measurements (such as deception attacks) and system behavior using a bond graph (BG) tool. The objective is to model the effect of the attack on the system. Then, to facilitate the detection and the isolation of the attack from the system. Keywords—SCADA, cyber-attacks, cyber-security, attack modeling, bond graph.

2018
(2018), Analysis of Acoustic Parameters from Respiratory Signal in COPD and Pneumonia patients. 2018 International Conference on Signal, Image, Vision and their Applications (SIVA) : IEEE,

Résumé: In this paper, a statistical analysis is performed for many parameters such as Harmonic to Nois Ratio (HNR),Pitch and Amplitude Perturbation (jitter and shimmer) was applied to compare between them in different cases from the respiratory signal. COPD and Pneumonia are a kind of pulmonary diseases which affects the respiratory signal. Respiratory sounds is non-stationary, non-linear and complex signals. The purpose of this work is acoustic features extraction using PRAAT software v6.0.43 from the respiratory signal. In order to evaluate these features, the mean and standard deviation are calculated and presented. However, in our study we found the Intensity value to be 66.42, 76.58 and 71.96 for the healthy, COPD and Pneumonia patients respectively, The Jitter(s) values obtained for the healthy, COPD and Pneumonia patients as 101.03, 174.40 and 173.45 respectively. Our results show the significantly …

2015
(2015), Model Predictive Control of a Solar Power plant Based on Fuzzy Kalman Filter. International Conference on Automatic control, Telecommunications and Signals (ICATS15)
(2015), Laryngeal Pathologies Analysis Using Glottal Source Features.. International Conference on Automatic control, Telecommunications and Signals (ICATS15)
(2015), WSN for AIR Quality Monitoring in Annaba City. ICIT 2015 The 7th International Conference on Information Technology : IEEE,
(2015), Safe Motion using Viability Kernels. IEEE Int. Conf. on Robotics and Automation (ICRA) 2015 ,USA : IEEE,

Résumé: A prerequisite to safe robot motion is to avoid Inevitable Collision States (ICS). However, the characterization of the ICS set is a challenge. Several approximation methods have been proposed, most of which either are overly conservative or fail to provide proper motion safety guarantees. In order to to improve safety guarantees, we build upon Viability Theory and adapt an algorithm designed to approximate the Viability Kernel, a concept similar to ICS. Our algorithm is applied first to a challenging static environment scenario. It is then extended to handle dynamic environments. Although it is not possible in general to ensure safety forever, we manage nonetheless to achieve infinite motion safety in two special cases.

(2015), Embedded Multiprocessors Vocal Command System: A way to Improve the tele-control of a Didactic manipulator Arm. Proc. ICIT 5th int confetrence on IT IEEE Jordan section, ISBN
(2015), Improving Monitoring and Fault Detection of Solar Panels Using Arduino Mega in WSN. ICEMPE 2015 Conferencehttps://www.waset.org/abstracts/24734

Résumé: Monitoring and detecting faults on a set of solar panels, using a wireless sensor network (WNS) is our contribution in this paper, this work is part of project we are working on at Al-Zaytoonah University. The research problem has been exposed by engineers and technicians or operators dealing with PV panel's maintenance, in order to monitor and detect faults within solar panels which affect considerably the energy produced by the solar panels. The proposed solution is based on installing WSN nodes with appropriate sensors for more often occurred faults on the 45 solar panels installed on the roof of IT faculty. A simulation has been done on nodes distribution and a study for the design of a node with appropriate sensors taking into account the priorities of the processing faults. Finally a graphic user interface is designed and adapted to tele-monitoring panels using WSN. The primary tests of hardware implementation gave interesting results, the sensors calibration and interference transmission problem have been solved. A friendly GUI using high level language Visual Basic was developed to carry out the monitoring process and to save data on Excel File.

2009
(2009), Embedded system based on multiprocessors to improve the control of a motorised wheelchair. 2009 4th International Conference on Design & Technology of Integrated Systems in Nanoscal Era : IEEE, http://www.academia.edu/download/51442215/Embedded_system_based_on_multiprocessors20170120-17970-11tjh99.pdf

Résumé: The aim of this work is to implement an interesting application using small vocabulary word recognition processor and some smart sensors on a smart system. The adopted model is based on grouping a microcontroller and a DSP processor for speech enhancement with a new voice recognition module for isolated word and speaker dependent. The resulting design is used to control a wheelchair for a handicapped individuals based on a vocal command. In order to gain in time design, experiments have shown that the best way is to choose a speech recognition kit and to adapt it to the application. More over, A DSP processor is integrated in order to enhance the quality of speech signal by reducing noise and echo. The input of the system are a set of eight Arabic words used to control the movement of an electric wheelchair, a vector of information on the context given by a set of sensors and a joystick for security …

2008
(2008), New speech processor and ultrasonic sensors based embedded system to improve the control of a motorised wheelchair. 2008 3rd International Design and Test Workshop Pages 345-349 Éditeur: IEEE : IEEE, http://www.academia.edu/download/5985208/1750-1755.pdf

Résumé: This paper describes a design of an embedded system used to facilitate the control of a wheelchair. Wheelchair users are able to operate a joystick to control the chair, however many more severely handicapped users need some other means of controlling this type of robot. The designed system is based on grouping a microcontroller with a new voice recognition processor for isolated word and speaker dependent and a set of ultrasonic modules. The resulting design is used to control a wheelchair for a handicapped individuals based on a vocal command. The input of the system are a set of eight Arabic words used to control the movement of an electric wheelchair, a vector of information on the context given by a set of sensors and a joystick for security actions; The output is a corresponding command and a set of indicator LED (Light Emitting Diodes). The system is developed in order to be installed on the …

(2008), HMM BASED VOICE COMMAND SYSTEM, A WAY TO CONTROL A MANIPULATOR ARM. Proceedings of The International Conference on Modelling and Simulation

Résumé: A voice command system for a manipulator arm is designed as a part of a research project. The methodology adopted is based on a spotted words recognition system based on a robust HMM (Hidden Markov Model) technique with cepstral coefficients as parameters used in automatic speech recognition system. To implement the approach on a real-time application, a Personal Computer parallel port interface was designed to control the movement of a set of stepper motors. The user can control the movements of four degree of freedom (DOF) for a robot arm using a vocal phrase containing spotted words.

2007
(2007), An ultrasonic navigation system for blind people. 2007 IEEE International Conference on Signal Processing and Communications : IEEE, https://www.researchgate.net/profile/Mohamed_Fezari/publication/251851635_An_Ultrasonic_Navigation_System_for_Blind_People/links/5816faaf08aeffbed6c1b0cb.pdf

Résumé: The aim of this paper is to investigate the development of a navigation aid for blind and visually impaired people. It is based on a microcontroller with synthetic speech output. This aid is portable and gives information to the user about urban walking routes to point out what decisions to make. On the other hand, and in order to reduce navigation difficulties of the blind, an obstacle detection system using ultrasounds and vibrators is added to this device. The proposed system detects the nearest obstacle via stereoscopic sonar system and sends back vibro-tactile feedback to inform the blind about its localization.

2005
(2005), An Electronic travel aid for blind people. IMAc 2005https://www.researchgate.net/profile/Mohamed_Fezari/publication/228781072_An_Electronic_Travel_Aid_for_Blind_People/links/02e7e5339909b9c2bd000000.pdf

Résumé: One of the major goals for blind and visually impaired people is independent mobility. In this paper an electronic travel aid for blind pedestrians is then described. It involves an accelerometer to detect the movement of the user when he walks and a microcontroller with synthetic speech output. This aid is a portable, self contained system that will allow blind and visually impaired individuals to travel through familiar and unfamiliar environments without the assistance of guides. In addition, it provides information to the user about urban walking routes using spoken words to indicate what decisions to make.