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25,016 Article Results

Design and Development of Low Cost Navigation and Security System for Indian Fisherman Using Adrino Nano Platform

10.11591/ijres.v4.i1.pp28-41
Sanket Dessai , Mahir M.M. , Mayur R. , Nilkantha Singha , Vinutha Avaradhi
The fishing industry plays a major role in development of Indian economy. The recent attacks on fishermen taking place in Indo-Srilanka and Indo-Pakistan maritime boundaries have been major concerns. These attacks are primarily caused by the lack of navigation and security features during the voyage. Hence the current situation demands the implementation of precise facilities for reducing man and material loss. This project involves the design and implementation of a Low cost Navigation and Security System for Indian fishermen on Arduino Nano platform. The system developed solves the above said issues by continously tracking the location of fishing vessel and providing minimal security features. The system ensures that navigation is in safe zone within the nation’s maritime boundary and also prevents crossover. This is acheived using GPS receiver which directly links to GPS satellites for current location of the vessel. The required data fields like the latitude and longitude data along with the time stamps are extracted from the GPS samples and used for comparision for determining the exact location of the vessel. This procedure will help in detection of corner cases when the vessel is nearing or about to crossover the maritime boundary, which cannot be marked physically. It is useful for triggering conditions like enabling or disabling fuel injection system, the warning beeps and display notifications to the fishermen. Manual override facility for restarting the engine in case of crossover for limited duration is provided. The security features like authentication for the genuine operator to get access to the engine panel, the support for distress message and the storage of the exact time stamps and GPS locations after encryption in case of initiation of transmitting distress message is provided as a blackbox feature. The passcode based mechanism allows for maximum of three attempts to unlock access to control panel. The GSM modem allows for transmission of distress message to the registered base station/coast guard. The encrypted GPS samples and time stamps are stored in on-chip EEPROM memory for future reference.   
Volume: 4
Issue: 1
Page: 28-41
Publish at: 2015-03-01

Wireless Sensor Network for Performance Monitoring of Electrical Machine

10.11591/ijres.v4.i1.pp1-5
Priyanka Ranaware , N.D. Dhoot
This paper proposes a novel industrial wireless sensor network for industrial machine condition monitoring. To avoid unexpected equipment failures and obtain higher accuracy in diagnostic and prognostic for the health condition of a motor, efficient and comprehensive data collecting, monitoring, and control play an important role to improve the system more reliable and effective. A novel wireless data collection for health monitoring system of electric machine based on wireless sensor network is proposed and developed in this paper. The unique characteristics of ZigBee networks such as low power, low cost, and high flexibility make them ideal for this application. The proposed system consists of wireless sensor nodes which are organized into a monitoring network by ZigBee protocols. A base station and wireless nodes have been developed to form a prototype system. Various sensors have the capability to monitor physiological as well as environmental conditions. Therefore proposed system provides a flexible solution that makes our living spaces more intelligent.
Volume: 4
Issue: 1
Page: 1-5
Publish at: 2015-03-01

Implementation of PI Controller for 3ф BLDCM Drive Using FPGA

10.11591/ijres.v4.i1.pp42-54
S.M. Ramesh Balaji , C. Muniraj
Despite the need of a complex motor controller, the simple construction of BLDC motors offers several inherent advantages not provided with brushed DC motors in terms of low inertia, high torque and a very wide speed range. The BLDC motors include, Longer service life due to a lack of electrical and friction losses and also free maintenance due to a lack of brushes and mechanical commutators. The EMI and noise are reduced because of the elimination of ionizing spikes from brushes. The control system of BLDCM is highly complex drive due to nonlinear nature. In such a system for implementing control algorithm needs high speed processor. In this work the controller Xilinx Spartan-6 FPGA is a demonstration platform intended to become familiar with the new features and availability of the Spartan-6 FPGA. The various experimental tests are carried out in 3Ф BLDCM .The experimental results are reported in order to verify the steady state, transient and robustness performance of the controller.
Volume: 4
Issue: 1
Page: 42-54
Publish at: 2015-03-01

An Efficient VLSI Architecture for Nonbinary LDPC Decoder with Adaptive Message Control

10.11591/ijres.v4.i1.pp6-12
Varatharajan Ramachandran
A new decoder architecture for nonbinary low-density parity check (LDPC) codes is presented in this paper to reduce the hardware operational complexity and power consumption. Adaptive message control (AMC) is to achieve the low decoding complexity,  that dynamically trims the message length of belief information to reduce the amount of memory accesses and arithmetic operations. A new horizontal nonbinary LDPC decoder architecture is developed to implement AMC. Key components in the architecture have been designed with the consideration of variable message lengths to leverage the benefit of the proposed AMC. Simulation results demonstrate that the proposed nonbinary LDPC decoder architecture can significantly reduce hardware operations and power consumption as compared with existing work with negligible performance degradation.
Volume: 4
Issue: 1
Page: 6-12
Publish at: 2015-03-01

Optimizing mental health: smartphone discharge planning's on impact on stroke survivor' mood

10.11591/ijphs.v14i1.24654
Dwi Retnaningsih , Desi Ramadhani , Eviwindha Suara
Stroke is a disease that causes a variety of physical and psychological disorders, resulting in limitations in a person's life. Stroke patients often experience psychological problems such as depression, anxiety, and stress as a result of changes in their life activities. Discharge planning is considered an intervention that can reduce complications and improve the quality of life of stroke patients. However, there are still reports that the implementation of discharge planning is not optimal, and one of the reasons is the use of inappropriate methods. The aim of the study was to demonstrate the impact of the use of discharge planning applications on the levels of depression, anxiety, and stress in stroke patients. The research method used is quasi-experimental quantitative research with a one-group pretest and posttest design. A total of 21 respondents used purposive sampling techniques. The results showed changes in levels of depression, anxiety, and stress after application-based discharge planning. The Wilcoxon statistical test results obtained a p-value of 0.000 (p<0.005), which suggests that there is an influence of application-based discharge planning on the levels of depression, anxiety, and stress in stroke patients.
Volume: 14
Issue: 1
Page: 85-93
Publish at: 2015-03-01

Distributed System and Multimaster Replication Model on Reliability Optimation Database

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4234
Ravie Kurnia Laday , Heru Sukoco , Yani Nurhadryani
Over the last two decades, significant advances have been made in the development of techniques for evaluating the performance, availability, and reliability of computer and communication systems in integration [11]. The reliability of the network is an important parameter in network [4]. Reliability is the performance, availability and security is a factors most important in a network . A distributed system is a system architecture in which computers can communicate and share resources [8]. This research applies a distributed system with load balancing and multimaster replication techniques in database. The results of this study found that the design of a system built to keep the data for connections between servers is in good condition and occurs down on one of the database server.DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7114 
Volume: 13
Issue: 3
Page: 529-536
Publish at: 2015-03-01

A Simple Strategy of Controlling a Balanced Voltage Capacitor in Single Phase Five-Level Inverter

10.11591/ijpeds.v6.i1.pp160-167
Leonardus Heru Pratomo , F. Danang Wijaya , Eka Firmansyah
The five-level inverter has been used for many applications in renewable energy systems. Even though its harmonic distortion was lower than the conventional two-level inverter. The five-level converter has some disadvantages such as increasing power semiconductor, complex pulse width modulation control methods, and problem with the voltage balancing of the capacitor. This paper aims to propose a modified five-level inverter based on sinusoidal pulse width modulation using phase shifted carrier to enhancing the capacitor voltage balancing. This modified five-level inverter reduces the overall cost and the complexity of the pulse width modulator. Thus making the proposed control system highly simple. The performance and its controller were validated by means of standard laboratory equipments. The analysis, simulation and implementation result showed better performance of five-level inverter.
Volume: 6
Issue: 1
Page: 160-167
Publish at: 2015-03-01

A Robotic Assistance Machine Vision Technique for An Effective Inspection and Analysis

10.11591/ijece.v5i1.pp46-54
Santosh Kumar Sahoo , B. B. Choudhury
An Inspection is a study of methods and techniques that can be suitably employed in practical applications. In this paper, a new activity is proposed and analysis framework to facilitate the inspection of an object using machine vision technique in which maximum efficiency can be achieved. By using LABVIEW software and vision builder software the quality of output images such as image compression, image restoration and multimedia streaming are achieved successfully. So the proposed design makes use of various image processing functions like special filters and classifiers to compute the optimum results. Using smart camera in the inspection system the static as well as the dynamic object is captured in fraction of seconds without any blurs; as a result the optimum image quality without any distortion is obtained for better analysis. The proposed system is very precise, accurate and flexible with reasonable development cost compared to other model. With the aid of an Industrial robotic system with simulation software the object is replaced immediately when the same is rejected by the machine vision model. Apart from this, the proposed model can be implemented for any type of Automation work
Volume: 5
Issue: 1
Page: 46-54
Publish at: 2015-02-01

Adoption of Park’s Transformation for Inverter Fed Drive

10.11591/ijpeds.v5.i3.pp366-373
Jayarama Pradeep , R. Devanathan
Park’s transformation in the context of ac machine is applied to obtain quadrature voltages for the 3-phase balanced voltages. In the case of a inverter fed drive, one can adopt Park’s transformation to directly derive the quadrature voltages in terms simplified functions of switching parameters. This is the main result of the paper which can be applied to model based and predictive control of electrical machines. Simulation results are used to compare the new dq voltage modelling response to conventional direct –quadrature (dq) axes modelling response in direct torque control – space vector modulation scheme. The proposed model is compact, decreases the computation complexity and time. The model is useful especially in model based control implemented in real time, in terms of a simplified set of switching parameters.
Volume: 5
Issue: 3
Page: 366-373
Publish at: 2015-02-01

Fault Location Effect on Short-Circuit Calculations of a TCVR Compensated Line in Algeria

10.11591/ijece.v5i1.pp1-12
Mohamed Zellagui , Heba Ahmed Hassan , Abdelaziz Chaghi
This research work investigated the effect of fault location on short-circuit calculations for a high voltage transmission line equipped with a novel FACTS device, namely Thyristor Controlled Voltage Regulator (TCVR). This main function of this device was to control the voltage and active power of the line. The paper considered a study case for a 220 kV transmission line, in the Algerian transmission power network, which was subjected to a phase to earth fault in the presence of a fixed fault resistance. The paper presented theoretical analysis of the short-circuit calculations which was confirmed by the illustrated simulation results. Simulation results showed the impact of the fault location on the symmetrical current and voltage components of the line, and transmission line phase currents and voltages; before using TCVR and in the presence of TCVR for both cases of positive and negative TCVR controlled voltage.
Volume: 5
Issue: 1
Page: 1-12
Publish at: 2015-02-01

Mitigation of Insider Attacks through Multi-Cloud

10.11591/ijece.v5i1.pp136-141
T Gunasekhar , K Thirupathi Rao , V Krishna Reddy , P Sai Kiran , B Thirumala Rao
The malicious insider can be an employees, user and/or third party business partner. In cloud environment, clients may store sensitive data about their organization in cloud data centers. The cloud service provider should ensure integrity, security, access control and confidentiality about the stored data at cloud data centers. The malicious insiders can perform stealing on sensitive data at cloud storage and at organizations. Most of the organizations ignoring the insider attack because it is harder to detect and mitigate. This is a major emerging problem at the cloud data centers as well as in organizations. In this paper, we proposed a method that ensures security, integrity, access control and confidentiality on sensitive data of cloud clients by employing multi cloud service providers. The organization should encrypt the sensitive data with their security policy and procedures and store the encrypted data in trusted cloud. The keys which are used during encryption process are again encrypted and stored in another cloud area. So that organization contains only keys for keys of encrypted data. The Administrator of organization also does not know what data kept in cloud area and if he accesses the data, easily caught during the auditing. Hence, the only authorized used can access the data and use it and we can mitigate insider attacks by providing restricted privileges.
Volume: 5
Issue: 1
Page: 136-141
Publish at: 2015-02-01

Improved Torque Control Performance in Direct Torque Control using Optimal Switching Vectors

10.11591/ijpeds.v5.i3.pp441-452
Muhd Zharif Rifqi Zuber Ahmadi , Auzani Jidin , Maaspaliza Azri , Khairi Rahim , Tole Sutikno
This paper presents the significant improvement of Direct Torque Control (DTC) of 3-phases induction machine using a Cascaded H-Bidge Multilevel Inverter (CHMI). The largest torque ripple and variable switching frequency are known as the major problem founded in DTC of induction motor. As a result, it can diminish the performance induction motor control. Therefore, the conventional 2-level inverter has been replaced with CHMI the in order to increase the performance of the motor either in dynamic or steady-state condition. By using the multilevel inverter, it can produce a more selection of the voltage vectors. Besides that, it can minimize the torque ripple output as well as increase the efficiency by reducing the switching frequency of the inverter. The simulation model of the proposed method has been developed and tested by using Matlab software. Its improvements were also verified via experimental results.
Volume: 5
Issue: 3
Page: 441-452
Publish at: 2015-02-01

The Self Exitated Induction Generator with Observation Magnetizing Characteristic in The Air Gap

10.11591/ijpeds.v5.i3.pp355-365
Ridwan Gunawan , Feri Yusivar , Budiyanto Budiyanto
This paper discusses the Self Exitated induction Generator (SEIG) by approaching the induction machine, physically and mathematically which then transformed from three-phase frame abc to-axis frame, direct axis and quadratur-axis. Based on the reactive power demand of induction machine, capacitor mounted on the stator of the induction machine then do the physical and mathematical approach of the system to obtain a state space model. Underknown relationships, magnetization reactance and magnetizing current is not linear, so do mathematical approach to the magnetization reactance equation used in the calculation. Obtained state space model and the magnetic reactance equation is simulated by Runge kutta method of fourth order. The equation of reactance, is simulated by first using the polynomial equation and second using the exponent equation. The load voltage at d axis and q axis using the polynomial laggs 640µs to the exponent equation. The polynomial voltage magnetitude is less than 0.6068 volt from the exponent voltage magnitude
Volume: 5
Issue: 3
Page: 355-365
Publish at: 2015-02-01

IQ Classification via Brainwave Features: Review on Artificial Intelligence Techniques

10.11591/ijece.v5i1.pp84-91
Aisyah Hartini Jahidin , Mohd Nasir Taib , Nooritawati Md Tahir , Megat Syahirul Amin Megat Ali
Intelligence study is one of keystone to distinguish individual differences in cognitive psychology. Conventional psychometric tests are limited in terms of assessment time, and existence of biasness issues. Apart from that, there is still lack in knowledge to classify IQ based on EEG signals and intelligent signal processing (ISP) technique. ISP purpose is to extract as much information as possible from signal and noise data using learning and/or other smart techniques. Therefore, as a first attempt in classifying IQ feature via scientific approach, it is important to identify a relevant technique with prominent paradigm that is suitable for this area of application. Thus, this article reviews several ISP approaches to provide consolidated source of information. This in particular focuses on prominent paradigm that suitable for pattern classification in biomedical area. The review leads to selection of ANN since it has been widely implemented for pattern classification in biomedical engineering.
Volume: 5
Issue: 1
Page: 84-91
Publish at: 2015-02-01

Solving Method of H-Infinity Model Matching Based on the Theory of the Model Reduction

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4204
Li Min Zhi , Cao Xin Jun
People used to solve high-order H model matching based on H control theory, it is too difficult. In this paper, we use model reduction theory to solve high-order H model matching problem, A new method to solve H model matching problem based on the theory of the model reduction is proposed． The simulation results show that the method has better applicability and can get the expected performance． DOI: http://dx.doi.org/10.11591/telkomnika.v13i2.6886
Volume: 13
Issue: 2
Page: 282-286
Publish at: 2015-02-01
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