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The aim of the present study is to characterize the electrical and electrostatic properties of the four kinds of cereal grains namely barley, durum wheat, soft wheat and impurities. The samples were charged by exposing them to a negative corona discharge generated by a needle electrode, facing a grounded plate electrode. Surface potential decay and electric charge measurements were recorded in order...
This work is devoted to study the influence of the increasing of the width of the polluted band on insulators used in desert regions, by measuring the leakage current through the insulators surface. The Recurrent Plot technique (RP) is used to analyze the leakage current (LC) signal for monitoring the insulators surface state. This technique is applied directly on the leakage current waveforms, and...
Water droplets on the surface of silicon rubber were investigated under the influence of non-uniform electric fields. Several parameters of water droplets were investigated, such as the positioning of the droplets regarding the electrodes. The most striking conclusion is that the flashover voltage and electric field distribution depends on the positioning of the droplets from the electrodes.
This research work presents the distribution of the electric field in point-barrier-plane air gaps taking into account the presence of a space charge under electric stress. A new approach of numerical simulation has been applied to study the barrier effect on the electric field distribution using COMSOL Multiphysics®. The introduction of an insulating barrier leads to a reduction of the electric field...
In this paper, we present an efficient approach to investigate data of EEG-based Brain-Machine Interface (BMI) using a bagging Support Vector Machines (SVMs) for collected data classification from a P3-speller paradigm. The combination of SVMs allows to handle the problem of EEG data variability between the different sessions of the acquisition process. This variability is caused by temporal non-stationarity...
The cross-correlation coefficient (CC) was used to estimate the effects of muscular voluntary contraction (MVC) and fibres inclination. The study was based on simulated surface electromyographic (sEMG) signals generated in a cylindrical multi-layer volume conductor (bone, muscle, fat and skin) and detected by longitudinal single differential (LSD), inverse binomial of order two (IB2) and maximum kurtosis...
This paper proposes a numerical method to calculate the induced potential and current in pipelines installed near a horizontal grounding electrode subjected to lightning discharge using the transmission line approach. The effect of this induced potential on the pipeline metal corrosion has been highlighted in term of mass loss for different soil resistivities and separation distances between pipeline...
In this paper, a combining Electroencephalographic (EEG) and Electro-oculographic (EOG) approach has been developed in order to allow the control of the displacement of a wheelchair by disable peoples. NeuroSky MindeWave headset and wet superficial electrodes have been used for the measurement of EEG and EOG signals respectively. These signals have been processed using Wavelet Transform (WT) and Principal...
The actual way of living is characterized by a large use of connected terminals and devices. This connectivity needs permanent intercommunication between terminals and requires miniaturization, power management, and intelligence. In this context, Human Body Communication (HBC) is an emerging and promising communication technique of Body Area Network (BAN) which enshrines these requirements. HBC is...
This investigation is devoted to study the transient behavior of long horizontal grounding conductor submitted to high impulse current using Transmission Line Method (TLM) incorporating soil ionization and/or mutual coupling phenomena. As results, soil ionization generates a very slight decrease in potential values. This diminution is accentuated when considering mutual coupling phenomenon. A good...
This paper aims to study the transient behavior of vertical grounding electrode under impulse current and buried in homogeneous soil. We have interested to the variation of the grounding impedance as function of frequency as well as the evolution of the transient potential using Transmission Line Method (TLM) in domain time. Several current magnitudes and soil resistivities and permittivities have...
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