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28,451 Article Results

Optical Tomography Sensor Configuration for Estimating the Turbidity Level of Water

10.11591/ijict.v3i3.pp153-161
Mohd Taufiq Mohd Khairi , Sallehuddin Ibrahim , Mohd Amri Md Yunus , Mohd Najmi Mohd Sulaiman , Mahdi Faramarzi
This paper presents an investigation on an optical sensor configuration to estimate the turbidity level in a sample of water based on tomography technique. The optical sensors consist of infrared light - emitting diodes (LED) as transmitters and photodiodes as the receivers where the projections of the sensors are designed in fan beam mode. The promising results obtained from the analysis of light path detection demonstrated the accuracy of the proposed technique in estimating the turbidity level of water. The approach has potential to contribute and utilize for monitoring the quality level of water in water treatment industries.
Volume: 3
Issue: 3
Page: 153-161
Publish at: 2014-12-01

Remote Controlling and Monitoring of Induction Motors Through Internet

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3918
Abdülkadir Çakir , Hakan Çalis , Gökhan Turan
Electric motors are workhorse of the industry. Induction motors are used more commonly than the other electric motors because of being low cost, robustness, and requiring less maintenance (especially squirrel-cage types), and able to work in harsh conditions. In this study, simultaneously remote powering of three separate single phase motors or one three-phase induction motor, when it is requested continuously remote data collection of motor currents, voltages, and remote monitoring of motor status are implemented. Moreover, preventing motors not running on low or high voltage conditions and allowing to run when the values return to nominal rates are provided. The design consists of PIC18F4620 microcontroller connected with ethernet board, sensor cards and control card. The developed software and HTML labels belonging to web interface are embedded in the microcontroller. The serial ethernet board contains HTML labels in its buffer memory. Thus, instead of using a separate host computer the serial ethernet board does the same hosting job. The remote powering of induction motors was done by the help of any device connecting to the internet with using an IP number assigned to the serial ethernet board. http://dx.doi.org/10.11591/telkomnika.v12i12.6719 
Volume: 12
Issue: 12
Page: 8051-8059
Publish at: 2014-12-01

Goal Detection in Soccer Video: Role-Based Events Detection Approach

https://ijece.iaescore.com/index.php/IJECE/article/view/5532
Farshad Bayat , Mohammad Shahram Moin , Farhad Bayat
Soccer video processing and analysis to find critical events such as occurrences of goal event have been one of the important issues and topics of active researches in recent years. In this paper, a new role-based framework is proposed for goal event detection in which the semantic structure of soccer game is used. Usually after a goal scene, the audiences’ and reporters’ sound intensity is increased, ball is sent back to the center and the camera may: zoom on Player, show audiences’ delighting, repeat the goal scene or display a combination of them. Thus, the occurrence of goal event will be detectable by analysis of sequences of above roles. The proposed framework in this paper consists of four main procedures: 1- detection of game’s critical events by using audio channel, 2- detection of shot boundary and shots classification, 3- selection of candidate events according to the type of shot and existence of goalmouth in the shot, 4- detection of restarting the game from the center of the field. A new method for shot classification is also presented in this framework. Finally, by applying the proposed method it was shown that the goal events detection has a good accuracy and the percentage of detection failure is also very low.DOI:http://dx.doi.org/10.11591/ijece.v4i6.6377
Volume: 4
Issue: 6
Page: 979-988
Publish at: 2014-12-01

Application of Value Assessment Weights in Conservation of Modern Architectural Heritage

10.11591/ijeecs.v12.i12.pp8312-8318
Song Gang , Yang Changming , Hao Chen , Ran Yanping
This study presents the weights of various indicators in the integrated conservation of our modern architectural heritage. In the AHP (Analytic Hierarchy Process), the Delphi method and Entropy method are integrally adopted to set up the evaluation indicator system of the conservation efforts, and the weight coefficient of evaluation indicators. Through the analysis, we can find that modern architectural heritages not only have the three basic values historical, artistic and scientific values, but also have significant environmental,cultural emotional and real estate values. In the assessment system, artistic and historical values are the priorities among those first-level indicators, and the real estate value is the last one. Among the second-level indicators, representative architectural art is the most important factor. Consequently, the emphases should be placed on the artistic and historical values of modern architectural heritages.
Volume: 12
Issue: 12
Page: 8312-8318
Publish at: 2014-12-01

Wind Turbine Fault Detection System in Real Time Remote Monitoring

https://ijece.iaescore.com/index.php/IJECE/article/view/5504
Saad Chakkor , Mostafa Baghouri , Abderrahmane Hajraoui
In new energy development, wind power has boomed. It is due to theproliferation of wind parks and their operation in supplying the nationalelectric grid with low cost and clean resources. Hence, there is an increasedneed to establish a proactive maintenance for wind turbine machines based on remote control and monitoring. That is necessary with a real-time wireless connection in offshore or inaccessible locations while the wired method has many flaws. The objective of this strategy is to prolong wind turbine lifetime and to increase productivity. The hardware of a remote control and monitoring system for wind turbine parks is designed. It takes advantage of GPRS or Wi-Max wireless module to collect data measurements from different wind machine sensors through IP based multi-hop communication. Computer simulations with Proteus ISIS and OPNET software tools have been conducted to evaluate the performance of the studied system. Study findings show that the designed device is suitable for application in a wind park.DOI:http://dx.doi.org/10.11591/ijece.v4i6.6479
Volume: 4
Issue: 6
Page: 882-892
Publish at: 2014-12-01

Developing Adaptive Cruise Control Based on Fuzzy Logic Using Hardware Simulation

https://ijece.iaescore.com/index.php/IJECE/article/view/5520
Noor Cholis Basjaruddin , Kuspriyanto Kuspriyanto , Didin Saefudin , Ilham Khrisna Nugraha
Ride comfort on the highway often interrupted because drivers need to adjust the vehicle speed. Safe distance between vehicles should be maintained is the main reason. The situation of monotonous and high speed will increase the risk of accidents on highway. A device is required by the driver to adjust the vehicle speed during the long distance (cruise) driving on highway without neglecting the safety aspects. The device is known as Adaptive Cruise Control (ACC). The ACC is a subsystem of Advanced Driver Assistance Systems (ADASs) that serves to assist the driver during cruise driving. The working principle of the ACC is the vehicle speed set automatically so that the distance to the vehicle in front remains safe. This paper presents the development of fuzzy logic controller for ACC. The fuzzy inference method used in this study is Mamdani. The result from hardware simulation that using remote control car shows that the fuzzy logic controller can work according to the design.DOI:http://dx.doi.org/10.11591/ijece.v4i6.6734
Volume: 4
Issue: 6
Page: 944-951
Publish at: 2014-12-01

An Area-Optimized Chip of Ant Colony Algorithm Design in Hardware Platform Using the Address-Based Method

https://ijece.iaescore.com/index.php/IJECE/article/view/5536
E. Shafigh Fard , K. Monfaredi , M. H. Nadimi
The ant colony algorithm is a nature-inspired algorithm highly used for solving many complex problems and finding optimal solutions; however, the algorithm has a major flaw and that is the vast amount of calculations and if the proper correction algorithm and architectural design are not provided, it will lead to the increasing use of hardware platform due to the high volume of operations; and perhaps at higher scales, it causes the chip area not to work because of the high number of problems; hence, the purpose of this paper is to save the hardware platform as far as possible and use it optimally through providing a particular algorithm running on a reconfigurable chip driven by the address-based method, so that the comparison of synthesis operations with the similar works shows significant improvements as much as 1/3 times greater than the other similar hardware methods.DOI:http://dx.doi.org/10.11591/ijece.v4i6.6923
Volume: 4
Issue: 6
Page: 989-998
Publish at: 2014-12-01

Modelling of Faulty Three Phase Induction Motor by Field Orientation

10.11591/ijeecs.v12.i12.pp8069-8076
M. Jannati , N. R. N. Idris , M. J. A. Aziz
This study investigates the simple vector control of a 3-phase squirrel cage Induction Motor (IM) under open-circuit fault (faulty 3-phase IM). It was shown that it is needed to supply the stator windings with unbalanced currents to remove the oscillating term of the machine electromagnetic torque. The vector control system is based upon Field-Oriented Control (FOC) that has been adapted for this type of machine. Simulation results are provided to show the operation of the proposed drive system.
Volume: 12
Issue: 12
Page: 8069-8076
Publish at: 2014-12-01

Performance Indicators for Wireless Intelligent Sensors Applications

10.11591/ijict.v3i3.pp129-143
Saad Chakkor
The metrology technology has been evolved so much with the wireless sensor intelligent systems providing more capabilities in term of processing, remote multi-sensing fusion and storage. This kind of systems can be used in many types of environments. The monitoring is one of the most used.  However, various design challenges for wireless intelligent sensors systems are imposed to overcome the physical limitations. Communication in sensor network should be as efficient as possible, especially for applications requiring specific performances. This paper analyzes the performance indicators of the sensing devices systems which stand for superior measurement, more accuracy and reliability. Study findings prescribe researchers, developers/ engineers and users to realizing an enhanced sensing motes design strategy that offers operational advantages which can give cost-effective solutions for an application.
Volume: 3
Issue: 3
Page: 129-143
Publish at: 2014-12-01

A Novel Direct Torque Control for Induction Machine Drive System with Low Torque And Flux Ripples using XSG

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5025
Souha Boukadida , Soufien Gdaim , Abdellatif Mtibaa
The conventional Direct Torque Control (DTC) is known to produce a quick and robust response in AC drives. However, during steady state, stator flux and electromagnetic torque which results in incorrect speed estimations and acoustical noise. A modified Direct Torque Control (DTC) by using Space Vector Modulation (DTC-SVM) for induction machine is proposed in this paper. Using this control strategy, the ripples introduced in torque and flux are reduced. This paper presents a novel approach to design and implementation of a high perfromane torque control (DTC-SVM) of induction machine using Field Programmable gate array (FPGA).The performance of the proposed control scheme is evaluated through digital simulation using Matlab\Simulink and Xilinx System Generator. The simulation results are used to verify the effectiveness of the proposed control strategy.DOI: http://dx.doi.org/10.11591/ijpeds.v4i4.6374
Volume: 4
Issue: 4
Page: 517-527
Publish at: 2014-12-01

Improving the Dielectric Properties of High Density Polyethylene by Incorporating Clay-Nano Filler

10.11591/ijeecs.v12.i12.pp7987-7995
Osama Elsayed Gouda , Sohair F. Mahmoud , Ahmed A. El-Gendy , Ahmed S. Haiba
Polymer Nano composites have been used for various important industrial applications. The preparation of high density polyethylene composed with Na-montmorillonite Nano filler using melt compounding method for different concentrations of clay-Nano filler of 0%, 2%, 6%, 10%, and 15% has been successfully done. The morphology of the obtained samples was optimized and characterized by scanning electron microscope showing the formation of the polymer Nano composites. The thermal stability and dielectric properties were measured for the prepared samples. Thermal gravimetric analysis results show that thermal stability in polymer Nano composites is more than that in the base polymer. It has been shown that the polymer Nano composites exhibit some very different dielectric characteristics when compared to the base polymer. The dielectric breakdown strength is enhanced by the addition of clay-Nano filler. The dielectric constant and dissipation factor have been studied in the frequency range 200 Hz to 2 MHz at room temperature indicating that enhancements have been occurred in dielectric constant and dissipation factor by the addition of clay-Nano filler in the polymer material when compared with the pure material.
Volume: 12
Issue: 12
Page: 7987-7995
Publish at: 2014-12-01

Speed Sensorless Direct Rotor Field-Oriented Control of Single-Phase Induction Motor Using Extended Kalman Filter

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5016
Mohammad Jannati , Seyed Hesam Asgari , Nik Rumzi Nik Idris , Mohd Junaidi Abdul Aziz
Nowadays, Field-Oriented Control (FOC) strategies broadly used as a vector based controller for Single-Phase Induction Motors (SPIMs). This paper is focused on Direct Rotor FOC (DRFOC) of SPIM. In the proposed technique, transformation matrices are applied in order to control the motor by converting the unbalanced SPIM equations to the balanced equations (in this paper the SPIM with two different stator windings is considered). Besides this control technique, a method for speed estimation of SPIM based on Extended Kalman Filter (EKF) to achieve the higher performance of SPIM drive system is presented. Simulation results are provided to demonstrate the high performance of the presented techniques.DOI: http://dx.doi.org/10.11591/ijpeds.v4i4.6098
Volume: 4
Issue: 4
Page: 430-437
Publish at: 2014-12-01

Weighted Samples Based Background Modeling for the Task of Motion Detection in Video Sequences

10.11591/ijeecs.v12.i11.pp7778-7784
Boubekeur Mohamed Bachir , Benlefki Tarek , Luo SenLin , Labidi Hocine
In this paper,a non parametric method for background subtraction and moving object detection based on adaptive threshold using successive squared differences and including frame differencing process is proposed. the presented scheme focused on the case of adaptive threshold and dependent distance calculation using a weighted estimation procedure. In contrast with the existing update procedures (Firstin First-out, random pickup), We proposed an intuitive update policy to the background model based onassociated decreasing weights. The presented algorithm succeeds on extracting the moving foreground with efficiency and overpasses the problematic of ghost situations. The proposed framework provides robustness to noise. Experiments show competitive results compared to existing approaches and demonstrate the applicability of the proposed scheme in a variety of video surveillance scenarios.
Volume: 12
Issue: 11
Page: 7778-7784
Publish at: 2014-11-01

A New Low-Costing QC-LDPC Decoder for FPGA

10.11591/ijeecs.v12.i11.pp7721-7727
Zhao Han , M.R. Anjum
Based on the Generalized Distributive Law and the features of FPGAs, this paper proposes a new strategy for implementation of Low-Costing QC-LDPC Decoder on FPGA platform. We get this new strategy from the Generalized Distributive Law, which is proposed to describe the belief propagation on graphs. And using this new strategy a low-costing (2560, 1024) LDPC decoder is implemented on a Xilinx Virtex-4 FPGA. Results show that this new strategy can make good use of the performance of LDPC codes, even though it needs less resource.
Volume: 12
Issue: 11
Page: 7721-7727
Publish at: 2014-11-01

Time Varying Autoregressive Model Parameters Estimation using Discrete Energy Separation Algorithm

10.11591/ijeecs.v12.i11.pp7785-7797
G.Ravi Shankar Reddy , Rameshwar Rao
Time Varying Autoregressive (TVAR) model for the Amplitude and Frequency modulated (AM-FM) signal is presented   In this paper. TVAR parameters of AM-FM signal are estimated using Discrete Energy Separation (DESA) Algorithm. The performance of DESA method is shown to be comparable to the existing basis function method for AM, FM, AM-FM signal models. The proposed method is simpler to execute in hardware and consumes considerably less computational resources compared to the method using Adaptive and the Basis function methods. .It is demonstrated that the proposed technique based on DESA has certain distinct advantages over the conventional method employing basis functions. Another advantage is that the present method works well with quickly varying signals
Volume: 12
Issue: 11
Page: 7785-7797
Publish at: 2014-11-01
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