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27,404 Article Results

A Monitoring System for Integrated Management of IoT-based Home Network

10.11591/ijece.v6i1.pp375-380
Changsu Ryu , Chang-Wu Hur
Recently, the society is rapidly becoming highly integrated with the convergence of smart devices, SNS, big data, cloud, and IoT. This phenomenon is being spread more swiftly based on the wired and wireless communication infrastructure provided to most homes, as terminal devices for communication have more various functions and are being supplied to homes through a multi-vendor system and as several terminal devices are installed in each home to provide services. Particularly, various IoT terminal devices and services are being introduced to facilitate functions such as home crime prevention, gas valve control, control of electric apparatus and temperature-humidity sensors, and door control based on facial recognition, and integrated IoT-based management monitoring is required for TVs, washing machines, refrigerators, etc. Hence, in this study, a monitoring system for integrated home network management and data collection management, which solves problems of existing home network systems by connecting API Adaptor connection technology, message technology for integrated management of universal communications terminal devices and IoT devices, and data modelling technology to individual network platforms, was proposed.
Volume: 6
Issue: 1
Page: 375-380
Publish at: 2016-02-01

Replacement of Analog Automatic Voltage Regulator using Digital Technology

10.11591/ijece.v6i1.pp53-62
Ersalina Werda Mukti , Sulistyo Wijanarko , Anwar Muqorobin
Before the 90’s, many power plants in Indonesia were equipped with analog controllers and now those power plants are still in operation to produce electricity. One of those controller parts is Automatic Voltage Regulator (AVR). If a failure occurs in the AVR, the economic solution is by replacing the damaged electronic component with new component. However this method will not solve the problem if the components are not available in local market or become obsolete. Purchasing the new AVR that compatible with other controller parts cannot be done again because the analog controllers are no longer produced by the vendor. Furthermore, replacement of all the controllers with the current technology become expensive.  According to this, an alternative solution is proposed in this paper by designing an AVR that compatible with other controller parts and considering the availability of the electronic components in local market. ATmega8 microcontroller is used to implement a digital AVR and employing op amp based as its signal conditioning. The result shows that the digital AVR can reduce hardware size and power consumption. The digital AVR also meets the computation rate of the computation signal.
Volume: 6
Issue: 1
Page: 53-62
Publish at: 2016-02-01

A Method for Attitude Control Based on a Mathematical Model for an Inverted Pendulum-Type Mobile Robot

10.11591/ijece.v6i1.pp198-204
Jin-Ho Yoon , Myung-Jin Chung
A method for attitude control based on a mathematical model for an inverted pendulum-type mobile robot was proposed. The inverted pendulum-type mobile robot was designed and the mathematical modeling was conducted. The parameters of the mobile robot were estimated and the state-space model of mobile robot was obtained by the substitution of the estimated parameters into the mathematical model. The transfer function of the mobile robot is applied to generate the root-locus diagram used for the estimation of the gains of the PID controller. The attitude control method including a PID controller, non-linear elements, and integral saturation prevention was designed and simulated. The experiment was conducted by applying the method to the mobile robot. In the attitude control experiment, the performance of attitude recovery from ±12° tilted initial state with a settling time of 0.98s and a percent overshoot of 40.1% was obtained. Furthermore, the attitude maintaining robustness against disturbance was verified.
Volume: 6
Issue: 1
Page: 198-204
Publish at: 2016-02-01

A Comparison of the Query Execution Algorithms in Secure Database System

10.11591/ijece.v6i1.pp337-343
Young-Dal Jang , Ji-Hong Kim
In accordance with the database management, DAS(Database as Service) model is one solution for outsourcing. However, we need some data protection mechanisms in order to maintain the database security The most effective algorithm to secure databases from the security threat of third party attackers is to encrypt the sensitive data within the database. However, once we encrypt the sensitive data, we have difficulties in queries execution on the encrypted database. In this paper, we focus on the search process on the encrypted database. We proposed the selective tuple encryption method using Bloom Filter which could tell us the existence of the data. Finally, we compare the search performance between the proposed method and the other encryption methods we know.
Volume: 6
Issue: 1
Page: 337-343
Publish at: 2016-02-01

A New Validation Approach of a New Three-Phase High Voltage Power Supply for Microwaves Generators with one Magnetron by Phase

10.11591/ijece.v6i1.pp1-11
M. Bassoui , M. Ferfra , M. Chraygane
In order to validating the new three-phase High voltage power supply for microwave generators with one magnetron by phase, this paper presents a new validation approach to evaluate the proposed model with several evaluations. This approach is based on the calculation and measurement of the performance and the power factor of this new three-phase power supply, also the study of the operation of this new system in case of failure. The design of this power supply is composed of new three-phase transformer with magnetic shunt, supplying by phase a voltage doubler cell composed of a capacitor and a diode. Each cell in turn, supplies a single magnetron. In this paper we have presented the new three-phase transformer by its equivalent model; it’s a π  quadruple  model composed  of  storable  inductances  able  to translating the nonlinear saturation phenomena for stabilization of  the  magnetron  current. The voltage and current curves obtained by simulation with MATLAB SIMULINK are in good conformity with those obtained by experimental of conventional power supply using a single phase transformer for one magnetron. The same curves will allow us to plot the instantaneous power absorbed by each magnetron. This leads to determine the average power emitted by each magnetron, and establish the balance of the power microwave generator by computing its performance which is compared to that obtained from experimental. After that we will compute the power factor of this power supply and we will study its operation in case of failure of one or two magnetrons.
Volume: 6
Issue: 1
Page: 1-11
Publish at: 2016-02-01

Incremental Tag Suggestion for Landmark Image Collections

10.11591/ijece.v6i1.pp139-150
Sutasinee Chimlek , Punpiti Piamsa-nga
In recent social media applications, descriptive information is collected through user tagging, such as face recognition, and automatic environment sensing, such as GPS. There are many applications that recognize landmarks using information gathered from GPS data. However, GPS is dependent on the location of the camera, not the landmark. In this research, we propose an automatic landmark tagging scheme using secondary regions to distinguish between similar landmarks. We propose two algorithms: 1) landmark tagging by secondary objects and 2) automatic new landmark recognition. Images of 30 famous landmarks from various public databases were used in our experiment. Results show increments of tagged areas and the improvement of landmark tagging accuracy.
Volume: 6
Issue: 1
Page: 139-150
Publish at: 2016-02-01

Modelling of E-Governance Framework for Mining Knowledge from Massive Grievance Redressal Data

10.11591/ijece.v6i1.pp367-374
Sangeetha G , L. Manjunatha Rao
With the massive proliferation of online applications for the citizens with abundant resources, there is a tremendous hike in usage of e-governance platforms. Right from entrepreneur, players, politicians, students, or anyone who are highly depending on web-based grievance redressal networking sites, which generates loads of massive grievance data that are not only challenging but also highly impossible to understand. The prime reason behind this is grievance data is massive in size and they are highly unstructured. Because of this fact, the proposed system attempts to understand the possibility of performing knowledge discovery process from grievance Data using conventional data mining algorithms. Designed in Java considering massive number of online e-governance framework from civilian’s grievance discussion forums, the proposed system evaluates the effectiveness of performing datamining for Big data.
Volume: 6
Issue: 1
Page: 367-374
Publish at: 2016-02-01

Information Base Security Threats and Challenges' in Information Forensic: A Survey

10.11591/ijeecs.v1.i2.pp406-410
Dilip Kumar Barai , G. Sridevi , Syed Umar , MSR Prasad
Generally to store the information or Information of any organization then they will be maintain Information base to manage that Information base we use some management techniques like Information base management systems so called DBMS. In this paper we introduced Relational DBMS which is a collection of applications that can store various information which can be easily retrieve, manipulate and storage of Information. So in this we are concentrating on forensic analysis and Information base of it which is very sensitive Information. In this paper we are analyzing and surveying of forensic Information based using various methodologies with different tools and algorithms for investigations, through which we got what are the challenges are facing in the forensic Information bases since the years.
Volume: 1
Issue: 2
Page: 406-410
Publish at: 2016-02-01

Portable Dual Mode Mobile Charger with Hand Crank Generator and Solar Panel

10.11591/ijeecs.v1.i2.pp282-287
Md. Atiqur Rahaman , Nusrat Hoque , Nipu kumar Das , Farial Nur Maysha , MD Morshed Alam
A new method of charging a mobile phone with the help of hand crank generator, and solar panel is being presented in this paper. Solar panel is useful during daylight and hand crank generator can be used at night. So this is a dual mode charger which is operated in either way and both ways do not consume system power. This type of mobile charger is very useful when traveling because it uses solar panel to convert renewable source light into electricity. Mechanical hand crank generator is used which converts mechanical energy into electrical energy and then charges the mobile. No electrical sources are needed for it. Our design uses a compound gear train for transformation of the mechanical energy generated from the hand crank to the generator. For that reason it is convenient as well as economical to use such kind of mobile charger for our mobile phone.
Volume: 1
Issue: 2
Page: 282-287
Publish at: 2016-02-01

Loss of Excitation Faults Detection in Hydro-Generators Using an Adaptive Neuro Fuzzy Inference System

10.11591/ijeecs.v1.i2.pp300-309
Mohamed Salah El-Din Abdel Aziz , Mohamed Elsamahy , Mohamed Moustafa , Fahmy Bendary
This paper presents a new approach for Loss of Excitation (LOE) faults detection in Hydro-generators using Adaptive Neuro Fuzzy Inference System. The proposed scheme was trained by data from simulation of a 345kV system under various faults conditions and tested for different loading conditions. Details of the design process and the results of performance using the proposed technique are discussed in the paper. Two different techniques are discussed in this article according to the type of inputs to the proposed ANFIS unit, the generator terminal impedance measurements (R & X) and the generator RMS Line to Line voltage and Phase current (Vtrms & Ia). The two proposed techniques results are compared with each other and are compared with the traditional distance relay response in addition to other technique. The results show that the proposed Artificial Intelligent based technique is efficient in the Loss of Excitation faults (LOE) detection process and the obtained results are very promising.
Volume: 1
Issue: 2
Page: 300-309
Publish at: 2016-02-01

Issues in Routing Mechanism for Packets Forwarding: A Survey

10.11591/ijece.v6i1.pp421-430
Rohit Nilkanth Devikar , Dipak V. Patil , V. Chandraprakash
Nowadays internet has become more popular to each and every one. It is very sensitive to nodes or links failure due to many known or unknown issues in the network connectivity. Routing is the important concept in wired and wireless network for packet transmission. During the packet transmission many times some of the problems occur, due to this packets are being lost or nodes not able to transmit the packets to the specific destination. This paper discusses various issues and approaches related to the routing mechanism. In this paper, we present a review and comparison of different routing algorithms and protocols proposed recently in order to address various issues. The main purpose of this study is to address issues for packet forwarding like network control management, load balancing, congestion control, convergence time and instability. We also focus on the impact of these issues on packet forwarding.
Volume: 6
Issue: 1
Page: 421-430
Publish at: 2016-02-01

Nonlinear Servomotor in Single Pulse Simulation of Electrical Discharge Machining System Modeling

10.11591/ijeecs.v1.i2.pp319-328
Hassan Lee , Azli Yahya , Nor Hisham Khamis , Shahrullail Samion
Electrical Discharge Machining, EDM is a nonconventional and high precision machining.  EDM system is considered a combination of servo system and EDM process. The servo system precisely controls the gap between electrode and workpiece for the continuous electrical discharges occurrence. Machining performance and stability depend on the performance of servo system. The EDM servo system usually modeled as a linear system, which ignores the nonlinearities of the motor. An assumption that the nonlinearities are insignificant in EDM system model may leads to modeling errors and result in poor control performance. In this study, nonlinear EDM servo system model was presented and the dynamic response of the model was analyzed and compared with the linear model. Simulation result shows a slightly difference in system response and a controller used in linear model is less efficient for a nonlinear EDM servo system model. The results are very useful for control strategy and can contribute to a better machining performance and stability of EDM applications.
Volume: 1
Issue: 2
Page: 319-328
Publish at: 2016-02-01

Prediction of a New Cascaded Hybrid Multilevel Inverter with Less Device Count

10.11591/ijeecs.v1.i2.pp273-281
C.R. Balamurugan , S.P. Natarajan , R. Bensraj
Multilevel inverters have been opted for high power applications due to reduced harmonic distortion, less device voltage stress and modular structure. This work proposes new modified hybrid H-bridge multilevel inverter using auxiliary switch. This proposed inverter produces five levels output with five power devices and clamping diodes as a phase voltage and nine levels as a line voltage.The levels of the inverters are decided based on the phase voltage not on the line voltage. In this paper the performance of the proposed inverter are measured in terms of line voltage. However, by increase in the number of levels the proposed inverter with reduced number of switches produces low switching losses and improves the efficiency of the inverter. This method achieves the variation of Total Harmonic Distortion (THD) in the inverter and output voltage is observed for various modulation indices. Simulation is performed using MATLAB-SIMULINK for line to line output voltage. Variable Amplitude Phase Disposition (VAPD) strategy provides output with relatively low distortion for all the strategies. It is also seen that VAPOD is found to perform better for all strategies since it provides relatively higher fundamental RMS output voltage.
Volume: 1
Issue: 2
Page: 273-281
Publish at: 2016-02-01

Research on the Surface Fractal Characteristic of the Rock with Rockburst Proneness

10.11591/ijeecs.v1.i2.pp349-353
Li Mo-xiao , Zhang Guang , Chen Jing-xi
In order to strengthen the prediction of rockburst and inquire the relationship between the rockburst proneness of rock and its surface fractal characteristic, the surface fractal of the rock was studied by fractal method and uniaxial compression test. The change rules of surface fractal of different types of rock were compared by calculating its fractal dimension of rock before experiment and after experiment. Based on this, we found that the dimension after test is bigger than before test for four kinds of rocks. The rock with stronger rockburst proneness has more intense failure in the loading process and its crack morphology is more complex.
Volume: 1
Issue: 2
Page: 349-353
Publish at: 2016-02-01

Multi-input DC-AC Inverter for Hybrid Renewable Energy Power System

10.11591/ijece.v6i1.pp40-52
Mohd Azman Rosli , Nor Zaihar Yahaya , Zuhairi Baharudin
The objective of this paper is to design a multi-input dc-ac inverter integrated photovoltaic array, wind turbine and fuel cell in order to simplify the hybrid power system and reduce the cost.  The output power characteristics of the photovoltaic array, wind turbine and fuel cell are introduced. The operational principle and technical details of the proposed multi-input dc-ac inverter is then explained. The proposed inverter consists of a three input flyback dc-dc converter and a single phase full bridge dc-ac inverter. The control strategy for the proposed inverter to distribute the power reasonably to the sources and it achieved a priority of the new energy utilization is discussed. This multi-input dc-ac inverter is capable of being operated in five conditions and power delivered to the ac load can be either individually or simultaneously. First to third condition occurs when the power delivered from either renewable energy sources individually, fourth condition happens when power is demanded from two sources simultaneously, and finally when power are available from three sources simultaneously. The proposed inverter has been simulated by employing NI Multisim 12.0 circuit simulator.
Volume: 6
Issue: 1
Page: 40-52
Publish at: 2016-02-01
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