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INDONESIA
Indonesian Journal of Electrical Engineering and Computer Science
Published by Institute of Advanced Engineering and Science
ISSN : 25024752     EISSN : 25024760     DOI : -
Core Subject :
Arjuna Subject : -
Articles 9,174 Documents
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Reflection phase analysis of reflectarray antenna based on paper substrate materials H. I Malik; M. Y. Ismail; S. R Masrol; Sharmiza Adnan
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 2: February 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v13.i2.pp766-772

Abstract

This article presents an analysis of reflection loss and reflection phase behavior of a novel microstrip reflectarray antenna, embedded on paper substrate material. Two different paper substrates were first analyzed for dielectric material properties. A detailed analysis of scattering parameters of rectangular patch element with variable substrate heights has been carried out. Rectangular patch elements fabricated using adhesive copper tape over the paper substrate, show that a wide bandwidth is achieved compared to available conventional substrate materials. Fabricated patch elements over paper substrate material show a broadband frequency response of 340 and 290 MHz. It has also been demonstrated that the measured reflection phase ranges for both the substrate cover 310º and 294º at low phase gradients of 0.12 and 0.24 º/MHz respectively.
Child Tracker: Presence and Location Finding System to Protect Child from Missing and Unexpected Cases G. Senthilnathan
Indonesian Journal of Electrical Engineering and Computer Science Vol 8, No 3: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v8.i3.pp743-746

Abstract

Many times children on their own are getting away from parent's view at home or on crowded areas like malls and beach. Not in all cases, but rather from time to time it is unpretentious the kids and hopeless things happening moreover. So it is fundamental for each parent to have a dominating reaction for shield the child from missing. However, the couple of GPS based after things are open in the market, they cost high and also needs a month to month charge for GSM advantage. Energize GPS is significant for outside after and not for nearby spots like strip shopping centers or houses. Also, the things accessible in the market are not viewing the improvement of a young wearing it. Our answer utilizes two contraptions for parent and tyke, clear RF correspondence between gadgets, virtual fencing using RF and tyke improvement viewing. The parent and child can wear this device rather than watch since it displays time data to them.
A new patch antenna for ultra wide band communication applications Anwar Sabah; Malik Jasim Farhan
Indonesian Journal of Electrical Engineering and Computer Science Vol 18, No 2: May 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v18.i2.pp848-855

Abstract

A printed monopole patch Ultra Wide Band (UWB) antenna for use in UWB application is proposed in this paper. The proposed antenna consists of a patch with appropriate dimensions on one side of a dielectric substrate, and a partial ground plane on the other side of the substrate. The techniques that used to enhance the bandwidth are the partial ground plane, feed point position and adjusted feed gap. The substrate that is used in the proposed antenna is Fr4 epoxy, the optimum dimensions of the antenna are 40mm×28mm×1.5mm this antenna designed by HFSS program. The band achieved by the proposed antenna is from 3.6GHz to 15GHz. This antenna is fabricated in the ministry of science and technology Baghdad-Iraq and a good agreement between simulation and measured S11 is achieved. 
Image Segmentation of Adhering Bars Based on Improved Concavity Points Searching Method Liu Guohua; Liu Bingle; Yuan Qiujie; Huang Zhenhui
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 8: August 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i8.pp6173-6180

Abstract

It is difficult to track, count and separate the bars moving at a high speed on production line for their overlap under occlusion. Therefore, it is necessary to establish a reliable, practical splitting mechanism for the adhered bars. This paper proposed a new solution to the problem of bars adhesion: the plane array camera was utilized to acquire the images of moving bars so as to recognize the centroid coordinates of the bars ends and compute their area with a Blob algorithm, two geometric parameters were utilized to detect adhered bars, and the presence of adhered bars was analyzed according to the convex hull. For the adhered bars, the segmentation points were searched using scanning method by a series of the rules to determine the optimal segmentation line. The proposed method can segment the adhered bars effectively with matched concavity points. The experimental results show that the method can well segment and count bars moving at a high speed on production line, with the counting accuracy near to 100% and the recognizing time in millisecond.
Whirlwind Rolling Process of Slender Shaft Zhang Hong; Deng ZhiPing; Jin Long; Long Jun; Zhang Zhengyi
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 5: May 2013
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In order to solve the problem of slender shaft which is easy bended and deformed for its big slenderness ration and poor rigidity, the method of whirlwind rolling with Tri-tools is designed. This paper introduces the principle and the process of stress analysis. With the help of ABAQUS finite element simulation software, the 3D model of whirling rolling is established. The rolling process is simulated by the software and summarizes the influence of quality factors during the whirlwind rolling process. DOI: http://dx.doi.org/10.11591/telkomnika.v11i5.2554
Ant Based Cross Layered Optimization Protocol for Wireless Multimedia Sensor Network with Fuzzy Clustering Dipali Parag Adhyapak; Sridharan Bhavani; Aparna Pradeep Laturkar
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 3: June 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v10.i3.pp1303-1309

Abstract

Wireless Multimedia Sensor Network (WMSN) is embedded with large number of Audio, Video and scalar sensor nodes which can able to retrieve the multimedia information from the environment. WMSN has several challenges such as life time of the network, Memory requirement, Coverage, Bandwidth and QoS metrics. Hence selection of routing algorithm is crucial in WMSN. Again interdependencies of the protocol layer cannot be neglected to improve the network performance. Clustering in WMSN is challenging task in order to increase network lifetime and to improve the communication. Hence Fuzzy clustered Ant based cross layer protocol (FCAXL) is proposed. In this paper performance analysis of ant based cross layer optimization protocol with fuzzy clustering based on number of nodes and packet size is done. Simulation results shows that Fuzzy clustered ant based cross layer optimization protocol performs best as compared to AntSenseNet routing protocol, Cross layer routing protocol and Ant based cross layer routing protocol in terms of QoS parameters such as Throughput, Packet delivery ratio and delay. Hence the life time of the network increases.
Internet Access Using Ethernet over PDH Technology for Remote Area Enceng Sulaeman; Tris sutrisno
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 2: February 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

There was still is gap among people living in city and in remote area to get information access, especially who lived in the Eastern part of Indonesia. People living in such remote area usually were isolated from town by natural condition like rivers, valleys, hills and so on.. Therefore, telecommunication  infrastructure for remote area using cooper was not effective and efficient way to build. The issue was how  information and communication technology could penetrate such areas. This research aimed to propose technology that could be implemented to overcome the difficulties. Ethernet over Plesiochronous Digital Hierarchy (EoPDH) was one of many techniques that provided Ethernet connectivity over non-Ethernet networks.  EoPDH was a standardized methodology for transporting native Ethernet frames over the existing established PDH transport technology.  To provide last milefor the local people, use of Mesh Wireless Local Area Network was made and connected to internet gateway via Ethernet over PDH based microwave radio link. The test showed that The Ethernet frames were successfully transported to remote area with good quality of service such as throughput, response time, and transaction rate. DOI: http://dx.doi.org/10.11591/telkomnika.v13i2.7036 
Wavelet Transforms Based Power Transformer Protection from Magnetic Inrush Current P. Soundiraraju; N. Loganathan
Indonesian Journal of Electrical Engineering and Computer Science Vol 14, No 3: June 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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 
Analysis and Design of PLL Motor Speed Control System Qi Chao Zhang
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 10: October 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

Phase-locked technology in motor speed control system has a wide range of applications, Especially for high accuracy in the motor steady speed operation situation, more and more use of phase-locked servo control system. This paper describes the block diagram and mathematical model of phase-locked control system, Shows the circuit parameter calculation method This and combined with design example analysis of phase-locked control system, Indicated through the theory and practice, using PLL can obtain good speed control precision. DOI: http://dx.doi.org/10.11591/telkomnika.v11i10.3391
Towards electronic learning features in education 4.0 environment: literature study Nor Azah Mansor; Natrah Abdullah; Hayati Abd Rahman
Indonesian Journal of Electrical Engineering and Computer Science Vol 19, No 1: July 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v19.i1.pp442-450

Abstract

This paper presents electronic learning features in Education 4.0 environment. Malaysian government encourages Higher Education Institution (HEIs) to embed technologies in order to prepare future education (Education 4.0). Besides, developing skills among students is important to be more adaptable in changing the environment. Current HEIs using Learning Management System (LMS) has lack of interactive features and non-personalized learning. Therefore, this article set out to analyze the existing literature on e-learning practices in Education 4.0 and to propose e-learning features suits in Education 4.0 environment. Guided by the PRISMA Statement (Preferred Reporting Items for Systematic reviews and Meta-Analyses) review method, a systematic review of the Scopus 24 related studies. Further review of these articles resulted in seven principles of e-learning features based on the constructivism principle – Self-regulation, Personal perspective, Experiential learning, Social learning, Learning Community, Creating and Sharing Knowledge, Structure and layout which can be used to upgraded and redesigned LMS.

Page 64 of 918 | Total Record : 9174

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