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28,451 Article Results

Network Reconfiguration of Primary Distribution System Using GWO Algorithm

10.11591/ijece.v7i6.pp3226-3234
A. V. Sudhakara Reddy , M. Damodar Reddy , M. Satish Kumar Reddy
This manuscript presents a feeder reconfiguration in primary distribution networks with an objective of minimizing the real power loss or maximization of power loss reduction. An optimal switching for the network reconfiguration problem is introduced in this article based on step by step switching and simultaneous switching. This paper proposes a Grey Wolf Optimization (GWO) algorithm to solve the feeder reconfiguration problem through fitness function corresponding to optimum combination of switches in power distribution systems. The objective function is formulated to solve the reconfiguration problem which includes minimization of real power loss. A nature inspired Grey Wolf Optimization Algorithm is utilized to restructure the power distribution system and identify the optimal switches corresponding minimum power loss in the distribution network. The GWO technique has tested on standard IEEE 33-bus and 69-bus systems and the results are presented.
Volume: 7
Issue: 6
Page: 3226-3234
Publish at: 2017-12-01

Limited Data Speaker Verification: Fusion of Features

10.11591/ijece.v7i6.pp3344-3357
T. R. Jayanthi Kumari , H. S. Jayanna
The present work demonstrates experimental evaluation of speaker verification for different speech feature extraction techniques with the constraints of limited data (less than 15 seconds). The state-of-the-art speaker verification techniques provide good performance for sufficient data (greater than 1 minutes). It is a challenging task to develop techniques which perform well for speaker verification under limited data condition. In this work different features like Mel Frequency Cepstral Coefficients (MFCC), Linear Prediction Cepstral Coefficients (LPCC), Delta (4), Delta-Delta (44), Linear Prediction Residual (LPR) and Linear Prediction Residual Phase (LPRP) are considered. The performance of individual features is studied and for better verification performance, combination of these features is attempted. A comparative study is made between Gaussian mixture model (GMM) and GMM-universal background model (GMM-UBM) through experimental evaluation. The experiments are conducted using NIST-2003 database. The experimental results show that, the combination of features provides better performance compared to the individual features. Further GMM-UBM modeling gives reduced equal error rate (EER) as compared to GMM.
Volume: 7
Issue: 6
Page: 3344-3357
Publish at: 2017-12-01

Driver Drowsiness Detection System Using Sensors

10.11591/ijict.v6i3.pp139-145
Kusuma Kumari B.M , Sampada Sethi , Ramakanth Kumar P , Nishant Kumar , Atulit Shankar
A low-cost and simple distributed sensors model that is particularly suitable for measuring eye blink of the driver, accident and hand position on a steering wheel. These sensors can be used in automotive active safety systems that aim at detecting driver’s fatigue, a major issue to prevent road accidents. The key point of this approach is to design a prototype of sensor units, so that it can serve as platform for integrating different kinds of sensors into the steering wheel. Since the sensors are attached to the steering wheel, therefore they can’t be detached by the driver. It will also detect dangerous stylish driving which may lead to fatal accidents. The major drawback is that the eye blink sensors frame worn by the driver can be removed causing the sensor non-operational. The outcome is that the vibrator attached to eye blink sensor’s frame vibrates if the driver shuts his eyes for approximately 3 seconds and also the LCD displays the respective warning message. The wheel is slowed or stopped depending on the condition. This is accompanied by the vehicle’s owner being notified through the GSM module, so the owner can retrieve the driver’s location, photograph and a list of nearby police stations through an android mobile application. Therefore, driver can be alerted during drowsiness and the owner can be notified simultaneously.
Volume: 6
Issue: 3
Page: 139-145
Publish at: 2017-12-01

Optimal Round Robin CPU Scheduling Algorithm Using Manhattan Distance

10.11591/ijece.v7i6.pp3664-3668
N. Srilatha , M. Sravani , Y. Divya
In Round Robin Scheduling the time quantum is fixed and then processes are scheduled such that no process get CPU time more than one time quantum in one go. The performance of Round robin CPU scheduling algorithm is entirely dependent on the time quantum selected. If time quantum is too large, the response time of the processes is too much which may not be tolerated in interactive environment. If time quantum is too small, it causes unnecessarily frequent context switch leading to more overheads resulting in less throughput. In this paper a method using Manhattan distance has been proposed that decides a quantum value. The computation of the time quantum value is done by the distance or difference between the highest burst time and lowest burst time. The experimental analysis also shows that this algorithm performs better than RR algorithm and by reducing number of context switches, reducing average waiting time and also the average turna round time.
Volume: 7
Issue: 6
Page: 3664-3668
Publish at: 2017-12-01

A Series Regeneration Converter Technique for Voltage Balancing of Energy Storage Devices

10.11591/ijeecs.v8.i2.pp475-481
A K M Ahasan Habib , S. M. A. Motakabber , Muhammad I. Ibrahimy
A single series resonant converter has been designed to balance the voltage level of a storage battery for electric vehicles. The proposed design has been simulated and verified by using two 100F supercapacitors instate of the conventional rechargeable battery. A voltage monitoring circuit detects the voltage condition of the individual capacitor and sends the voltage status to the control circuit for action. A technique has been developed to control a set of switches to transfer the current between the capacitor to balance the voltage level. The MATLAB simulated result shows the balancing circuit decreases the voltage difference between the two supercapacitors from 200 mV to 0V in 140 seconds, which is less than the existing methods. This fast voltage balancing technique can be used in the battery management system or electric vehicles for long lasting the battery life. Keywords: Voltage balancing; electric vehicles; supercapacitor; battery; series resonant converter
Volume: 8
Issue: 2
Page: 475-481
Publish at: 2017-11-01

Enhanced Capability, Reliability, and Productivity for Submerged Geophysical Mapping of Unexploded Weapons

10.11591/ijeecs.v8.i2.pp564-566
CH. Vijayalakshmi
This paper presents comes about because of innovation advancement endeavors throughout the most recent 6 years concentrated on submerged unexploded weapons (UXO) discovery and arrangement. Our approach abuses coordinated geo-referenced detecting advancements and have application for undertakings running from ports and harbor improvement to seaward vitality and wind cultivate improvement. Compelling discovery of UXO, accomplished through various innovations, uses techniques archived in the United States Air Force (USAF) Military Munitions Response Program (MMPR) Underwater Military Munitions Guidance Document, distributed in 2014. Evaluation stages and advances include: remotely worked vehicles (ROVs) for starting site observation; multibeam echo sounder (MBES) for bathymetry; sides can sonar (SSS) for ocean bottom target discovery; sub-base profiling for residue portrayal; stationary examining sonar for high resolution base conditions; attractive field mapping by means of towed, vessel-sent, base after wing or from a towed gliding stage for shallow-water settings; ROV-based optical and acoustic studies and target cross examinations; and ROV-based electromagnetic enlistment (EMI) exhibits for target cross examination and characterization. The specialized difficulties identifying with precise geo-situating of these frameworks and cases of co-enrollment results are examined in most recent 10 years, the GDC has encouraged unified control of more than 100 remotely executed ventures.
Volume: 8
Issue: 2
Page: 564-566
Publish at: 2017-11-01

Harmonic Effects Analysis of Electronic Loads Controller On Self Excited Induction Generator (SEIG) Operations

10.11591/ijeecs.v8.i2.pp273-280
Refdinal Nazir , Andi Pawawoi , Riska Amalia
The aplication of Electonic Load Controller (ELC) on Self-Excited Induction Generator (SEIG) driven by renewable energy sources creates harmonic issues. This paper has analyzed the propagation of the harmonic current generated by the ELC in the generator system. Mathematical modeling and computer simulation is used to analyze the propagation of harmonic currents generated by ELC on the generator system. Laboratory testing has also been conducted to justify the simulation results. The study results showed that the propagation harmonic currents created by ELC on the stator widings of SEIG and main load side are rejected for high order components, and attenuated for lower order components. Consequently, the THDI of stator and main load current will be reduced significantly.
Volume: 8
Issue: 2
Page: 273-280
Publish at: 2017-11-01

Optimization of Food Composition for Hypertensive Patient using Variable Neighborhood Search

10.11591/ijeecs.v8.i2.pp327-334
Aprilia Nur Fauziyah , Wayan Firdaus Mahmudy
Hypertension is a major symptom that cause other diseases appear such as non-communicable diseases, cancer, and diabetes if the nutrients on hypertensive patients not controlled from the actual nutrition need. One of healthy life effort for the patients is consuming healthy food that considers level of salt in the foods. The problem to determine the food composition that considers level of salt and minimum cost of the food is solved using Variable Neighborhood Search. This study compares 3 neighborhood structures: insertion, exchange, and 2-opt. The use of 2-opt neighborhood structure gives the highest fitness averages of other neighborhood structure. Selection and arrangement of neighborhood structure in every k neighborhood have effect on the solution is obtained. The result of this study contains composition of foods with nutrients which are close to the needs of hypertension patients with attentions the sodium and minimal cost within a day.
Volume: 8
Issue: 2
Page: 327-334
Publish at: 2017-11-01

Obstacle detection technique using multi sensor integration for small unmanned aerial vehicle

10.11591/ijeecs.v8.i2.pp441-449
Muhammad Faiz Bin Ramli , Syariful Syafiq Shamsudin , Ari Legowo
Achieving a robust obstacle detection system for small UAV is very challenging. Due to size and weight constraints, very limited detection sensors can be equipped in the system. Prior works focused on a single sensing device which is either camera or range sensors based. However, these sensors have their own advantages and disadvantages in detecting the appearance of the obstacles. In this paper, combination of both sensors based is proposed for a small UAV obstacle detection system. A small Lidar sensor is used as the initial detector and queue for image capturing by the camera. Next, SURF algorithm is applied to find the obstacle sizes estimation by searching the connecting feature points in the image frame. Finally, safe avoidance path for UAV is determined through the exterior feature points from the estimated width of the obstacle. The proposed method was evaluated by conducting experiments in real time with indoor environment. In the experiment conducted, we successfully detect and determine a safe avoidance path for the UAV on 6 different sizes and textures of the obstacles including textureless obstacles.
Volume: 8
Issue: 2
Page: 441-449
Publish at: 2017-11-01

Cryptanalysis on Privacy-aware two-factor Authentication Protocol for Wireless Sensor Networks

10.11591/ijeecs.v8.i2.pp296-301
Younsung Choi
Das first proposed two-factor authentication combining the smart card and password to resolve the security problems of wireless sensor networks (WSNs). After that, various researchers studied two-factor authentication suitable for WSNs. In user authentication protocols based on the symmetric key approach, a number of elliptic curve cryptography (ECC)-based authentication protocols have been proposed. To resolve the security and efficiency problems of ECC-based two-factor authentication protocols, Jiang et al. proposed a privacy-aware two-factor authentication protocol based on ECC for WSNs. However, this paper performs a vulnerability analysis on Jiang et al.’s authentication protocol and shows that it has security problems, such as a lack of mutual authentication, a risk of SID modification and DoS attacks, a lack of sensor anonymity, and weak ID anonymity.
Volume: 8
Issue: 2
Page: 296-301
Publish at: 2017-11-01

The Non-Destructive Test Method as A Simple Way to Evaluate the Quality Of Metal Core Pcbs for High Power Micro-Assemblies

10.11591/ijeecs.v8.i2.pp281-286
A.V. Sukhanov , A.I Artemova , R.S Litvinenko
The article describes the necessity of an incoming quality control of the delivered power electronics elements especially at the stage of choosing a reliable supplier. In particular, in the field of the metal core PCBs production, there is a need to control not only its heat sink parameters, but also to control the quality of the joint interface of the metal core PCBs. Since the use of poor-quality materials or the violation of the technological process by the manufacturer can lead to the defects in the PCBs structure. Thus it can affect the heat sink efficiency and the reliability of the entire assembly. The article proposes and describes the method of nondestructive incoming quality control of metal core PCBs. This method is based on the use of ultrasonic layer-by-layer scanning for obtaining the internal structure of PCBs. The article presents the results of applying this method for the PCBs of various manufacturers. The data of the structure visualization and the influence of environment temperatures changes were also obtained. The result pictures of the tested samples before and after the thermal circling were obtained to study the possible degradation of the PCBs structure and its parameters.
Volume: 8
Issue: 2
Page: 281-286
Publish at: 2017-11-01

Remotely Operated Submarine Vehicle Control Using Fuzzy Logic

10.11591/ijeecs.v8.i2.pp582-585
P. Palanichamy
Submerged marine investigation still remains a puzzle. The motivation behind this paper is to address the issues in plan and improvement of submerged vehicles with hindrance shirking and moving help for administrator in marine condition utilizing fluffy rationale controller. A symmetrical, practical and little measured submerged Remotely Operated Vehicle (ROV) with three thrusters is intended for testing control calculation and execution of framework. Kinematics of the ROV is produced relating rate of revolution of thrusters with ROV'S straight and precise increasing speed. A near investigation of the framework's reaction for basic if-else rationale and with fluffy rationale controller for route is made and assessed. A Graphical User Interface (GUI) with live bolster is given to the administrator to more extensive scope of visual perception of submerged condition and navigational guide.
Volume: 8
Issue: 2
Page: 582-585
Publish at: 2017-11-01

Performance Analysis of HRO-B+ Scheme for the Nested Mobile Networks using OPNet

10.11591/ijeecs.v8.i2.pp522-532
Shayma Senan , Aisha Hassan A. Hashim
As a demand of accessing Internet is increasing dramatically, host mobility becomes insufficient to fulfill these requirements. However, to overcome this limitation, network mobility has been introduced. One of its implementation is NEMO Basic Support protocol which is proposed by Internet Engineering Task Force (IETF). In NEMO, one or more Mobile Router(s) manages the mobility of the network in a way that its nodes would be unaware of their movement. Although, it provides several advantages, it lacks many drawbacks in term of route optimization especially when multiple nested mobile networks are formed. This paper presents a new hierarchical route optimization scheme for nested mobile networks using Advanced Binding Update List (BUL+), which is called HRO-B+. From performance evaluation, it shows that this scheme performs better in terms of throughput, delay, response time, and traffic, and achieves optimal routing.
Volume: 8
Issue: 2
Page: 522-532
Publish at: 2017-11-01

Online Performance Monitoring of Grid-Connected Photovoltaic System using Hybrid Improved Fast Evolutionary Programming and Artificial Neural Network

10.11591/ijeecs.v8.i2.pp399-406
Puteri Nor Ashikin Megat Yunus , Shahril Irwan Sulaiman , Ahmad Maliki Omar
This paper presents the development of online performance monitoring methods for grid-connected photovoltaic (GCPV) system based on hybrid Improved Fast Evolutionary Programming and Artificial Neural Network (IFEP-ANN). The approach has been developed and validated using previous predicted data measurement. Solar radiation (SR), module temperature (MT) and ambient temperature (AT) has been employed as the inputs, and AC output power (PAC) as the sole output to the neural network model. The actual data from the server has been called and uploaded every five minute interval into Matlab by using FTP (File Transfer Protocol) and the predicted AC output power has been produced based on the prediction developed in the training stages. It is then compared with the actual AC output power by using Average Test Ratio, AR. Any predicted AC output power less than the threshold set up, indicates an error has been occurred in the system. The obtained results show that the hybrid IFEP-ANN gives good performance by producing a sufficiently high correlation coefficient, R value of 0.9885. Besides, the proposed technique can analyse and monitor the system in online mode. 
Volume: 8
Issue: 2
Page: 399-406
Publish at: 2017-11-01

Evaluation of Protective Relaying Reliability in Renewable Energy Environment

10.11591/ijeecs.v8.i2.pp407-413
Z. Hisham , H. Hashim , Z. Shukri , Z. Ishak
The decrement in supply of fossil fuel led to the exploration of new energy sources, which varies from wind energy to solar energy, which are known as Renewable Energy. The main problem with these power sources are the inconsistency of their energy that depends very much on the environmental factors. The embedment of these power sources onto conventional power transmission network would affect the sensitivity and reliability of protective relaying. Two different types of solar power plant connection to power system network are presented in this paper, namely Bus Connection and T-Off Connection. Computer Aided Protection Engineering (CAPE) software is used to model the networks being protected by distance protection, and simulate short circuit scenario. This paper specifically focuses on evaluating the impact of the in-feed current being contributed by both network configurations to the reliability of distance protection.
Volume: 8
Issue: 2
Page: 407-413
Publish at: 2017-11-01
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