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28,451 Article Results

Home Appliance Control with Publish Subscribe in Social Media

10.12928/telkomnika.v13i2.1309
Sabriansyah Rizqika; University of Brawijaya Akbar , Eko; University of Brawijaya Setiawan , Achmad; University of Brawijaya Basuki
 Nowadays, Internet social media has enriched the way people to communicate and interact each other. Will it be possible for people to interact with their home appliances around? This paper proposes a new approach in smart home system that made possible for people to remotely interact with their appliances using social media networks. In this paper, we present a smart home prototype system that leverages Twitter’s Application Program Interface (API) to remotely control home appliances over the Internet. Experiment results showed that the system immediately responds to remote commands sent over a social media account to control home appliances. The system responds the command in 3672.96 ms. Publish-subscribe method work better in mass announcement communication system. Home system could notice all householders in less than 6 s independenly from number of householder. Our proposed method gives alternative solution to build reliable, fast and simple control method.
Volume: 13
Issue: 2
Page: 678-685
Publish at: 2015-06-01

Wireless Sensor Networks Node Localization-A Performance Comparison of Shuffled Frog Leaping and Firefly Algorithm in LabVIEW

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1504
Chandirasekaran D , T. Jayabarathi
Wireless sensor networks (WSN) have become popular in many applications area including environmental monitoring, military and offshore oil & gas industries. In WSN the sensors are randomly deployed in the sensor field and hence estimation of the localization of each deployed node has drawn more attention by the recent researchers, It’s a unique problem to identify and maximizing the coverage where the sensors need to be placed in a position so that the sensing capability of the network is fully utilized to ensure high quality of service. In order to keep the cost of sensor networks to a minimum, the use of additional hardware like global positioning system (GPS) can be avoided by the use of effective algorithms that can be used for the same. In this paper we attempted to use both the shuffled frog leaping (SFLA) and firefly algorithms (FFA) to estimate the optimal location of randomly deployed sensors. The results were compared and published for the usefulness of further research. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7861
Volume: 14
Issue: 3
Page: 516-524
Publish at: 2015-06-01

Wavelet Transform Based Fault Diagnosis of BLDC Motor Drive

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1495
Ramesh Balaji S.M. , C. Muniraj , Mekala N
Due to the development in science and technology tremendous improvement in solid state devices and circuits, so we need to reduce the complexity of control circuits. The Brushless DC Motor (BLDCM) has simple construction, stator consists of winding and rotor consists of permanent magnet. It has higher efficiency and high speed range. In this paper presents the vibration analysis of single phase open circuit fault conditions and the signals are extracted from the Discrete Wavelet Transform (DWT). The Spartan-6 FPGA processor was implemented due to their high performance of the control applications in recent decades. In this process Sinusoidal Pulse Width Modulation (SPWM) techniques were used to control the speed of BLDC Motor. The experimental analysis is carried out in 3phase, BLDCM drive. The vibration signals are measured by using Accelerometer through Lab VIEW software. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7967 
Volume: 14
Issue: 3
Page: 434-440
Publish at: 2015-06-01

Design of Interior Daylighting Shading Control using LV and PVsyst Software

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1490
Nibedita Das , Nitai Pal , Pradip Kumar Sadhu
Vitality proficient, expense sparing inhabitance, planning and more regularity control the passive shading of interior lighting, a creative reasonable configuration methodology of rooftop solar PV module  structure outline is presented here. This  paper is  centered to build up  the utilization of inactive sun oriented shading systems  for  sunshine inside lighting to create a high visual level by considering  different  parameters, for example,  establishment, site determination, and execution checking of the sun based  PV framework utilizing worldwide radiation, temperature, mugginess, precipitation, days with precipitation, and course, daylighting span to focus the utilization and materialness of such frameworks in the Kolkotta  areas in India. This paper is delineated specialized, savvy, shading movement module misfortune and sparing of non-risky gas and green perspectives, alongside execution enlightenment of LED installation with their lifespan utilizing Lithonia Visual software (LV) and photovoltaic (PVsyst) software. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7885 
Volume: 14
Issue: 3
Page: 388-401
Publish at: 2015-06-01

Finding Kicking Range of Sepak Takraw Game: A Fuzzy Logic Approach

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1508
Andino Maseleno , Md. Mahmud Hasan
This paper presents a method to find kicking range of sepak takraw game when player kicks backthe ball to the other team. To serve, one player stands in the right semi-circle on their side of the court. Theplayer throws the ball to the server, who stands in the circle on their side of the court. The player kicks theball up and over the net then opponent player kicks back the ball. This research works considered how fuzzylogic can be applied for the sepak takraw game - for addressing uncertainty in kicking range of the ball. Wehave chosen Tsukamoto’s fuzzy reasoning scheme, because the individual rule outputs are crisp numbers,and therefore, the functional relationship between the input vector and the system output can be relativelyeasily identified. The result reveals that if player serve far, kicking range will be decreased and stable duringkicking very near through kicking very far.\\ DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7833 
Volume: 14
Issue: 3
Page: 557-564
Publish at: 2015-06-01

Artificial Optimal Fuzzy Control Strategy for Elevator Drive System by Using Permanent Magnet Synchronous Motor

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1499
Salam Waley Shneen , Chengxiong Mao
There are many power electronic converters and motor drives connected together to form the electrical system of an elevator. In this paper, we have presented a modeling tool that has the advantages of utilizing capabilities of the PMSM software in detailed simulations of converters, motor drives, and electric machines. In addition, equivalent electrical models of Elevator drive system. This paper also gives a brief idea of PMSM validity as an elevator simulation tool. PMSM drive system is described and analyzed due to its importance in many applications especially in elevator applications. applications due to their high efficiency, low inertia and high torque to volume ratio. A closed loop control system with a PI control,Fuzzy, PSO in the speed loop with current controllers .The simulation circuits for PMSM, inverter, speed and current controllers include all realistic components of the drive system. Simulation results for SPWM control schemes associated with current controllers are given for two speeds, one below rated and another above rated speed. in this paper and it has been shown that the model is suitable for transient as well as steady state condition. These results also confirmed that the transient torque and current never exceed the maximum permissible value. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7952
Volume: 14
Issue: 3
Page: 470-480
Publish at: 2015-06-01

Skin and Clothes Matching Seeded by Color System Selection

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1503
Rahmadi Kurnia , Meza Silvana , Ikhwana Elfitri
This work has designed an automated system to recommend clothe for people based on their skin. Skin colors from various races were relate with a variety of clothing colors to obtain their harmonization value. This research  involve  30 respondents through  questionnaire to provide initial views  to a variety of colors to match the skin color variation. Input from the respondents is then analyzed to choose the right color system to be linked with skin color. To determine the relationship between skin color and clothes color fuzzy logic rules were used. The system was then tested again to 30 respondents. The results showed that variations in skin color and clothing are best on a combination of Cr and Saturation. DOI:  http://dx.doi.org/10.11591/telkomnika.v14i1.7235 
Volume: 14
Issue: 3
Page: 508-515
Publish at: 2015-06-01

Wavelet Transforms Based Power Transformer Protection from Magnetic Inrush Current

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1489
P. Soundiraraju , N. Loganathan
The Power transformer is the very essential element in the power systems. For wealthy running operation of power transmission and distribution, the transformer set-up is indispensable. Otherwise, under fault situation the whole transmission system will lead to power loss. The protection is necessary for power transformers i.e. mostly against internal faults and magnetic inrush currents. Exciting magnetic inrush current will tide, when the transformer is operated without keeping load or in the Voltage recovery after the fault being separated. This work suggests to develop transient detection techniques using wavelet transform for all these faults. The wavelet transform has a benefit of representation of current and Voltage signals. Empathy of transients is very fast and precise the research proposes to expand a new wavelet method to identify inrush currents to classify it from power system disturbances. The suggested practice extract faults and inrush generated transient signals using wavelet transform process. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7849 
Volume: 14
Issue: 3
Page: 381-387
Publish at: 2015-06-01

An Review of Power Factor Correction in SRM Drives Using Bridgeless Converters

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1496
M. Vishvanath , R. Balamurugan
This paper deals with a comparative analysis of various converter topologies for Power Factor Correction (PFC) in switched reluctance motor drives. Hence a power factor corrected converter required for obtaining the improved PQ at the AC mains for an inverter fed SRM drive has been analyzed. The SRM when fed by a DBR with a high value of DC-link capacitor results in highly distorted supply current and a poor power factor. A new bidirectional bridgeless LUO converter is used. The bridgeless LUO converter is a mixture of two dc-dc converters with one or two semiconductor switches in the current flowing path thereby reducing the current stresses in the active and passive switches. Circuit efficiency is further improved as compared to conventional Converters. LUO converters are new series of DC/DC Converters that have very low ripple of voltage and current and have output wave with high quality, high transfer voltage gain and high power density. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7781 
Volume: 14
Issue: 3
Page: 441-445
Publish at: 2015-06-01

Bidirectional Battery Charger for PV Using Interleaved Fourport DC-DC Converter

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1494
A. Elamathy , G. Vijayagowri , V. Nivetha
In this paper, a four-port bidirectional dc-dc converter is proposed for grid-interactive photovoltaic (PV) system application. The four-phase topology is suitable for residential pumping, aerospace power requirements. The control of battery and different capacities of PV modules are naturally decoupled. In addition, the port interface with PV is current type which can implement maximum power point tracking (MPPT) and soft switching under wide variation of PV terminal voltage. Finally, simulation results are proposed to verify the power control in different operation modes. DOI: http://dx.doi.org/10.11591/telkomnika.v14i3.7894 
Volume: 14
Issue: 3
Page: 428-433
Publish at: 2015-06-01

Sensor Node Easy Moving Monitoring Region Location Algorithm in Internet of Things

10.12928/telkomnika.v13i2.1434
Donghua; Wuhan University of Technology Feng , Yahong; Nanyang Institute of Technology Li
Because of the influence from geographical location, weather and other kinds of circumstances in monitored areas, the shift of the node location and non-uniform distribution, this paper proposed an improved DV-Hop location algorithm. First of all, the package structure by changing the anchor nodes to reduce the number of hops data acquisition phase node data storage; introducing weights to the average hop distance calculation phase the original average hop distance calculation method was improved, and between the node and anchor node distance calculated on the basis of reference anchor nodes are different; then, iterative refinement of node localization stage through the use of multilateral measurement method and Taylor series. Finally, simulation experiment of this method, and compared with the existing methods, the results prove that the method in this paper can greatly reduce positioning errors without adding hardware equipment and network traffic, improve the positioning accuracy, a better solution to the problem of node localization networking monitoring area.
Volume: 13
Issue: 2
Page: 703-710
Publish at: 2015-06-01

Optimization of Sensor Network Topology in Deployed in Inhomogeneous Lossy Media

10.12928/telkomnika.v13i2.961
Rony; University of Palangkaraya Teguh , Hajime; Hokkaido University Igarashi
This paper presents optimization of wireless sensor network (WSN) topology for forest fire detection. The sensors for this purpose are deployed in forest, grassland and open space, which have different attenuation properties in electromagnetic waves. For this reason, routers which receive signals from sensors and send them to the base station must be deployed considering these differences. In this work, we develop an optimization method for WSN topology based on simulated annealing considering the differences in the attenuation property. The vegetation data are taken from Landsat data. Using the present method, the necessary number of routers for full connection of the sensors deployed in diverse, irregular environments can be estimated.
Volume: 13
Issue: 2
Page: 469-477
Publish at: 2015-06-01

Sampling Deviation Real-time Calibration Method for Wideband Simulator

10.12928/telkomnika.v13i2.1470
Song; Nanjing University of Aeronautics and Astronautics Bingbing , Pan; Nanjing University of Aeronautics and Astronautics Minghai , Hu; Nanjing University of Aeronautics and Astronautics Xiaohua
Hardware-in-the-loop simulation is an efficient method for research on radar system.Target’s echo which offered by the simulator should be synchronized with radar on frequency, time, and range bin. However, because simulator needs to take into account of the requirements of various types of radar, it is difficult to make the clock of simulator synchronized with the clock of radar. To solve the problem, synchronous sampling deviation model is established. Influence of sampling deviation on imaging is analyzed. An engineering method is put forward to eliminate the sampling deviation. This method not only provides a reference for simulation system, but also provides a reference for the design of radar system.
Volume: 13
Issue: 2
Page: 510-517
Publish at: 2015-06-01

Integrated System Design for Broadcast Program Infringement Detection

10.12928/telkomnika.v13i2.1124
Sukmawati Nur; Diponegoro University Endah , Satriyo; Diponegoro University Adhy , Sutikno; Diponegoro University Sutikno
Supervision of television and radio broadcast programs by the “Komisi Penyiaran Indonesia (KPI)” Central Java was still performed manually i.e. direct supervision by humans. It certainly had some weaknesses related to the human error such as tiredness and weary eyes. Therefore, we needed intelligent software that could automatically detect broadcast infringement. Currently, research in this area had not been studied. This research was to design an integrated system to detect broadcast infringement including data design, architecture design and main module interface design. Two main stages in this system are the Indonesian language speech recognition and detection of infringements of the broadcast program. With the method of Mel Frequency cepstral Coefficients (MFCC) and Hidden Markov Model (HMM) speech recognition application that used the 1050 sample data produces about 70% accuracy rate. This research would continue to implement the plan that had been created using speech recognition applications that had been built.
Volume: 13
Issue: 2
Page: 571-577
Publish at: 2015-06-01

Spectrum Sensing Based on Monostable Stochastic Resonance in Cognitive Radio Networks

10.12928/telkomnika.v13i2.1429
Yonghua; South China University of Technology Wang , Pin; Guangdong University of Technology Wan , Qin; Guangdong University of Technology Deng , Yuli; China University of Technology Fu
The cognitive radio technology can provide dynamic spectrum access and improve the efficiency of spectrum utilization. Spectrum sensing is one of the key technologies of cognitive radio networks. The spectrum sensing performance of cognitive radio networks will be greatly reduced in the low SNR environment, especially when using energy detection. Due to the monostable stochastic resonance system can improve the energy detection system output SNR, a monostable stochastic resonanceis applied to spectrum sensing based on the energy detection method of cognitive radio networks in this paper. The simulation results show that in the low SNR environment, when the false alarm probability is constant, the proposed spectrum sensing based on monostable stochastic resonance has better performance than traditional energy detection.
Volume: 13
Issue: 2
Page: 487-493
Publish at: 2015-06-01
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