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28,593 Article Results

Research of Reliability, Availability and Maintainability on the All-electronic Computer Interlocking System

10.11591/ijeecs.v12.i8.pp5877-5885
He Tao , Ren Jianxin
High levels of reliability and high security are the basic characteristics and requirements of railway signal systems. So, reliability, availability and maintainability (RAM) are necessarily analyzed before the computer interlocking system will be adopted. The All-electronic Computer Interlocking System, which is a new kind of interlocking system, still needs to analyze its RAM before being put to use. In this paper, the reliability methods and Markov model are adopted to analyze the RAM indexes of the All-electronic Computer Interlocking System when its execution layer equipped with the single configuration or the dual-redundant configuration, the paper also compares the indexes with that of the traditional computer-based interlocking system. Finally, the paper will briefly include suggestions on how the All-electronic Computer Interlocking System’s RAM indexes may be increased and also, how the system may be used practically.
Volume: 12
Issue: 8
Page: 5877-5885
Publish at: 2014-08-01

Downscaling Modeling Using Support Vector Regression for Rainfall Prediction

10.11591/ijeecs.v12.i8.pp6423-6430
Sanusi Sanusi , Agus Buono , Imas S Sitanggang , Akhmad Faqih
Statistical downscaling is an effort to link global scale to local scale variable. It uses GCM model which usually used as a prime instrument in learning system of various climate. The purpose of this study is as a SD model by using SVR in order to predict the rainfall in dry season; a case study at Indramayu. Through the model of SD, SVR is created with linear kernel and RBF kernel. The results showed that the GCM models can be used to predict rainfall in the dry season. The best SVR model is obtained at Cikedung rain station in a linear kernel function with correlation 0.744 and RMSE 23.937, while the minimum prediction result is gained at Cidempet rain station with correlation 0.401 and RMSE 36.964. This accuracy is still not high, the selection of parameter values for each kernel function need to be done with other optimization techniques.
Volume: 12
Issue: 8
Page: 6423-6430
Publish at: 2014-08-01

Advances on Low Power Designs for SRAM Cell

10.11591/ijeecs.v12.i8.pp6063-6082
Labonnah Farzana Rahman , Mohammad F. B. Amir , Mamun Bin Ibne Reaz , Mohd. Marufuzzaman , Hafizah Husain
As the development of complex metal oxide semiconductor (CMOS) technology, fast low-power static random access memory (SRAM) has become an important component of many very large scale integration (VLSI) chips. Lot of applications preferred to use the 6T SRAM because of its robustness and very high speed. However, the leakage current has increasing with the increase SRAM size. It consumes more power while in standby condition. The power dissipation has become an importance consideration due to the increase integration, operating speeds and the explosive growth of battery operated appliances. The objective of this paper is to review and discuss several methods to overcome the power dissipation problem of SRAM. Low power SRAM can be produced with improvement in term of power dissipation during the standby condition, write operation and read operation. Discharging and charging of bit lines consumes more power during write ‘0’ and ‘1’compared to read operation. One of the methods to produce low power SRAM design is with make modification circuit at a standard 6T SRAM cell. This modification circuit will help to decrease power dissipation and leakage current. Several method was discussed in this paper for understand the method to produce low power design of SRAM cell. Recommendations for future research are also set out. This review gives some idea for future research to improve the design of low power SRAM cell.
Volume: 12
Issue: 8
Page: 6063-6082
Publish at: 2014-08-01

Dynamic Modeling Process of Neuro Fuzzy System to Control the Inverted Pendulum System

10.11591/ijeecs.v12.i8.pp6153-6163
Tharwat O. S. Hanafy , Mohamed K Metwally
The analysis and control of complex plants often requires the principles of qualitative process models since quantitative, namely analytical process models are not available. Qualitative modeling is one promising approach to the solution of difficult tasks automation if qualitative process models are not available. This contribution presents a new concept of qualitative dynamic process modeling using so called Dynamic Adaptive Neuro fuzzy Systems. This yields the framework of a new systems theory the essentials of which are given in further section of the paper. First, an identification method is presented, using a combination of linguistic knowledge.
Volume: 12
Issue: 8
Page: 6153-6163
Publish at: 2014-08-01

Application Research based on Artificial Fish-swarm Neural Network in Sintering Process

10.11591/ijeecs.v12.i8.pp6127-6133
Song Qiang , Wang Ai-Min , Li Hua
Sinter tumbler strength is an important parameter in the sintering process, and has an important influence on the performance of finished sinter. Artificial fish swarm algorithm have good ability to acquire the global performance, the neural network has strong nonlinear ability and local optimization performance,; AFSA+BP algorithm combined with artificial fish swarm algorithm and BP algorithm, realizes the complementary artificial fish swarm algorithm global search capability and BP algorithm's local optimization combination of performance, an artificial fish swarm neural results show that the network combination algorithm, it is shown that comparing with the traditional BP neural network forecasting method,the presented forecasting method has better adaptive ability and can give better forecasting results.The artificial fish—swarm algorithm network is trained and checked with the actual production data.this algorithm has strong generalization capability, predictive accuracy improved significantly, and speed up the convergence rate, provides an effective method for strength prediction. Which be used for off-line learning and prediction, a good basis for the online application.
Volume: 12
Issue: 8
Page: 6127-6133
Publish at: 2014-08-01

Small-world and Scale-free Features in Harry Potter

10.11591/ijeecs.v12.i8.pp6411-6416
Zhang Jun , Zhao Hai , Xu Jiu-qiang , Wang Jin-fa
Harry Potter is a series of seven fantasy novels which has got a huge success. To explore the reasons of so successful of the novel behind, we analyzed the characters network in Harry Potter from the perspective of complex networks. Studies show that the characters network in Harry Potter has got the small-world effect and scale-free feature. It is a typical complex network. The success of novel Harry Potter is precisely due to the complex properties of it, and this may give some guidance for novel writers when preparing their works.
Volume: 12
Issue: 8
Page: 6411-6416
Publish at: 2014-08-01

PLC SCADA Based Fault Identification and Protection for Three Phase Induction Motor

10.11591/ijeecs.v12.i8.pp5766-5773
Venkatesan Loganathan , S. Kanagavalli , P.R. Aarthi , K.S. Yamuna
Today overvoltage, over current, overload, over temperature, and under voltage are the most commonly occurred problems in protection circuits of induction motor. We usually design Protection circuits with components such as timers, contactors and current relays. In order to reduce the mechanical components usage we prefer to use Personal Computer (PC) and Programmable Logic Controller (PLC). In this method Induction motors current, voltage, Speed, temperature values and fault occurred history are monitored in PC with an Alarm Message during fault occurrence. PLC-based protection methods are costs less, provides higher accuracy with safe mode of operation when compared with the other protection systems.
Volume: 12
Issue: 8
Page: 5766-5773
Publish at: 2014-08-01

Image Protection by Intersecting Signatures

10.11591/ijeecs.v12.i8.pp6386-6392
Chun-Hung Chen , Yuan-Liang Tang , Wen-Shyong Hsieh , Min-Shiang Hwang
In this paper, we propose an exact image authentication scheme that can, in the best case, detect image tampering with the accuracy of one pixel. This method is based on constructing blocks in the image in such a manner that they intersect with one another in different directions. Such a technique is very useful to identify whether an individual image pixel has been tampered with.
Volume: 12
Issue: 8
Page: 6386-6392
Publish at: 2014-08-01

Embedded System Application for Blind People Navigation Tool

10.11591/ijeecs.v12.i8.pp6083-6087
Wakhyu Dwiono , Siska Novita Posma , Arif Gunawan
The stick for blindman navigational aid can only provide information about the presence of objects that being touched. This navigational aid stick can not provide more information such as object distance and the name of the place. To overcome this problem, we realized a navigational tool that can provide information about the distance of objects around the user and the name of the places where being passed. The existing objects are detected using three sets of ultra sonic sensors. These sensors emit ultrasonic signals, when the signal collide the obstacle, then will be reflected back and being received by these sensors too. The time lag between the transmitting and receiving signals then will be converted into the distance. RFID reader is used to read the presence or absence of tags around the RFID reader. Identity tag emits a signal that will be used to mark the place name. The results of measuring distance and sequence voice database recorder gives a good yield. Voice database recorder circuit works as well as the detection of RFID tags.
Volume: 12
Issue: 8
Page: 6083-6087
Publish at: 2014-08-01

A Complete Lattice Lossless Compression Storage Model

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3756
Zhi Huilai
In this paper, a complete lattice lossless compression storage model is proposed to improve the storage efficiency. In order to build the proposed model, first all the upper and lower irreducible elements of the complete lattice are identified respectively, then an isomorphic mapping form the complete lattice to a concept lattice is founded, and finally a matrix is used to store the formal context of the concept lattice. Compared with using adjacent matrix, example and analysis show that the proposed method can improve the storage efficiency of complete lattice. DOI: http://dx.doi.org/10.11591/telkomnika.v12i8.5854 
Volume: 12
Issue: 8
Page: 6332-6337
Publish at: 2014-08-01

Automatic Monitoring of Pest Insects Traps Using Image Processing

10.11591/ijeecs.v12.i8.pp5779-5783
Akash J. Upadhyay , P. V. Ingole
Monitoring pest insect population is currently an important issue in crop protection. At farm level insect population monitoring is consistently operated by repeated surveys by a human operator of adhesive traps, disseminated through the field, where insects remain stuck when attracted. This is a laborious and time-consuming activity, and it would be of great advantage for farmers to have an affordable system performing this task automatically. A system based on a distributed imaging device that is able to automatically acquire and transmit images of the trapping area to a remote host station is proposed. The network architecture consists of a master node hosted in a PC and a set of client nodes, spread in the fields, which act as monitoring stations. The master node coordinates the network and retrieves the captured images from the client nodes. A GSM modem which is interfaced with PC through USB port is used to send messages to the particular numbers for required attention in this regard for further action.
Volume: 12
Issue: 8
Page: 5779-5783
Publish at: 2014-08-01

Harmonic Reduction in Variable Frequency Drives Using Active Power Filter

10.11591/ijeecs.v12.i8.pp5758-5765
M. Tamilvani , K. Nithya , M. Srinivasan
In this paper Voltage Source Inverter (VSI) is used to supply a variable frequency variable voltage to a three phase induction motor drive in a variable speed application. One important complication is that, Voltage Source Inverter (VSI) used in VFD causes non-sinusoidal output voltage and current due to presence of harmonics. Shunt active filter with VSI topology is proposed for current harmonic elimination. The current control scheme proposed for SAPF is Synchronous Reference Frame theory applied to SVPWM. The reference current can be calculated by using Reference Frame Transformation, reference current are transformed from a−b−c stationary frame to d−q rotating frame. In SVPWM technique, the Active Power Filter reference voltage is generated and desired Active Power Filter output voltage is generated by SVPWM. The analysis of simulation results are carried out in MATLAB/SIMULINK model.
Volume: 12
Issue: 8
Page: 5758-5765
Publish at: 2014-08-01

Design of Temperature Measurement and Data Acquisition System based on Virtual Instrument LabVIEW

10.11591/ijeecs.v12.i8.pp6027-6035
Xingju Wang
The LabVIEW virtual instrument consists of three parts: data acquisition, data test and analysis, output display. System control part is realized on the LabVIEW platform, data collection, data processing, and data recording, alarm and historical data readback function. The system uses DSl8B20 to measure temperature. The paper present design of temperature measurement and data acquisition system based on virtual instrument LabVIEW. Finally, this paper realizes the temperature acquisition and detection system, which is a new type of intelligent. System hardware circuit design is using digital temperature sensor DS18B20, and experiments show that the proposed method has a good effect.
Volume: 12
Issue: 8
Page: 6027-6035
Publish at: 2014-08-01

Modeling and Simulation of Silicon Solar Cell in MATLAB/SIMULINK for Optimization

10.11591/ijeecs.v12.i8.pp6047-6054
Ehsan Hosseini
One of the most significant current discussions in life is solar energy and has been in use since the beginning of time. Increasingly, man is learning how to yoke this important resource and use it to replace traditional energy sources. Recent developments in the field of solar energy have led to a renewed interest in Solar cells to store this energy and reproduce electricity. Unfortunately the amount of energy converted is very less, that is the efficiency of conversion is poor. The major problem is to improve the efficiency so that the losses can be minimized. In this project the Maximum Power Points are found and the Fill Factor is calculated. In this paper using MATLAB and SIMULINK model the comparison of silicon solar cell and type of panels is done.
Volume: 12
Issue: 8
Page: 6047-6054
Publish at: 2014-08-01

Peak Power Reduction Using Improved Selective Mapping Technique for OFDM

10.11591/ijeecs.v12.i8.pp6291-6296
Muhmmad Rizwan Anjum , Mussa A. Dida , M. A. Shaheen
OFDM has Major disadvantage is that  it leads to high Peak to Average Power Ratio (PAPR) which is consider to be as the main implementation drawback.  In this paper we are discussing about PAPR which affects the performance and efficiency of Power Amplifier (PA) and its influence by utilizing the Selective Mapping (SLM) technique in OFDM system for reduction of PAPR. the idea for improved SLM produces several independent signals based on converting the original data lock into many independent signal and then the signal has lowest PAPR that specific signal is  transmitted. Also data rate trade-off exist at the receiver end  when side information is detected for the  recovery of data block. which leads to the reduction of data rate. Improved SLM techniques for reducing the PAPR is the most promising reduction technique in its non-uniform phase factor for PAPR reduction in multicarrier OFDM system. Furthermore the estimate  expression by using Complementary Cumulative Distribution Function (CCDF) for PAPR has been discussed. Simulated results demonstrate that OFDMA signals using improved SLM technique carried significant effects in reduction of PAPR in OFDM system.
Volume: 12
Issue: 8
Page: 6291-6296
Publish at: 2014-08-01
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