2012

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Design and implementation of an aerial surveillance unit using wireless communication scheme
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-10-15) Islam, Riasat Siam; Hussain, Nafis; Ibrahim, Ismail Bin
In recent times, a wide variety of applications for Aerial Surveillance are being introduced. This project has been aimed to design and implement an Aerial Surveillance Unit that will be used for further research on applications of Aerial Surveillance to traffic management, crime management, pollution control, protection and security. The preliminary prototype will consist of a camera device that will provide live video feed at the remote end and the complete system will be teleoperated. The main control system consists of ATmega2560, for the surveillance system we have used a low power serial camera, the secured communication system consists of a Wi-Fi router connected to Arduino Ethernet Shield, the flight mechanism is accomplished using a high rpm bldc motor and servo motors has been used to control lift, yaw and landing. The surveillance mechanism had worked successfully receiving video at 640x 480 and 320x 240 resolutions. Since, it is a preliminary device there is definite scope for further development to design an Aerial Surveillance Unit for the desired purpose
Power Flow Analysis using MATLAB
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-10-15) Naser, Mohammad; Najibullah
Design and test of ds89s52 based trainer board
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-10-15) Quader, Md.Irfanul; Zaman, Tanzeeb; Islam, Yazdani Ul
The main difference between a microprocessor and microcontroller is that a Microcontroller has inbuilt peripherals like Timers, USART, Interrupt controller etc whereas in a Microprocessor these have to be interfaced as separate ICs. In this project we use the Microcontroller AT89s52 from the ATMEL corp. The AT89s52 is a low power; high performance CMOS 8-bit microcontroller with 4Kbytes of Flash programmable and erasable read only memory (EPROM) .The device is manufactured using Atmel’s high density nonvolatile memory technology and is compatible with the industry standard MCS-51 instruction set and pin out. The on-chip Flash allows the program memory to be reprogrammed in-system or by a nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on monolithic chip, the Atmel At89s52 is a powerful microcomputer which provides a highly-flexible and cost effective solution to many embedded control applications.
Study of Photovoltaic/Thermal Solar Energy Systems
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-10-15) Saifullah, Khaled; Nael, Mohammed; Shehada, Wael
Aiming the improvement of usage of solar thermal energy PV modules is widely used throughout the world. Due to the lack of desired level efficiency the numerous researches are carried out to escalate the output of PV modules one of the form of developed PV modules is PV/T solar system. The temperature of PV module increases while absorbing solar radiation causing the decrease of electrical output after certain level. The hybrid Photovoltaic/Thermal (PV/T) solar system enhances the output of PV module facility the harvest of both thermal and electrical energy using the same solar radiation absorbed by the same surface area. In this experiment the design of PV/T dual system is developed, using both air and water circulation as heat extraction medium modifying the air channel. The shape of painted black ribbed surfaces at the bottom of air channel has been used as trapezoidal, Saw tooth backward ,Saw tooth forward and Flat plate as reference. The capacity of all set up is similar and having same dimensions. The process of natural convection is applied to circulate the air and water to increase the system efficiency. The variation in the net output is studied due the difference of air channel.
Comparison among different migration paths for cellular deployment in Bangladesh in collaboration with grameenphone
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-10-15) Ahmed, Tanjir; Mosleh, Md. Mukib; Ibrahim, Touheed
The thesis work is a collaboration between Islamic University of Technology and the leading cellular operator of Bangladesh, Grameenphone Ltd. (Telenor) and aims to provide a thorough technological analysis and business case comparison for different migration paths to the next generation technology for the operator. There has been a tremendous growth in service quality and competition among the cellular operators and a continuous demand for network up gradation to a better and efficient cellular technology. Worldwide 3G networks roll out began since 2000 to cater the ever increasing data demand for mobile broadband solution. But unfortunately in Bangladesh, due to regulatory issues, 3G technology couldn’t have been implemented till now. After so many years, The Bangladesh Telecom Regulatory Commission (BTRC) has finished all the required ground works and is expected to arrange a spectrum frequency auction in Q1 of 2013 where in total 5 concessions will be allocated in 2.1 Ghz band, 10 MHz each. Each concession will be a technology neutral one. All the cellular operators of the country are expected to bid on that auction including Grameenphone. Technology neutrality allows the operator to choose and deploy the technology best suited for their business. Till now (October 2012), the next generation technology LTE has been successfully rolled out in 105 networks. So, whether to deploy 3G or go for the next generation technology LTE bypassing 3G/UMTS remains a question any operator, in this case Grameenphone. This thesis tries to answer this question in accordance with Bangladesh’s cellular market perspective taking into considerations the technological aspects as well as a cost revenue analysis done by data provided by Grameenphone Ltd. for both migration paths- 3G (UMTS/HSPA) and LTE.
Solar Home Power Supply Unit: Perspective-Bangladesh
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT) The Organization of Islamic Cooperation (OIC) Board Bazar, Gazipur-1704, Bangladesh, 2012-10-30) Rahman, Mohammad Taibur; Islam, Md. Nurul
Optimized Scaling Factor for Cell Change Parameters for Speedy Users in LTE
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Rahim, Muhammad Ridwanur; Chowdhury, Md. Tawfiq; Masud, Muhammad Atique
Long Term Evolution (LTE) supports mobility using cell reselection and handover processes. The parameters affecting the time to trigger cell reselection and handover are scaled for high mobility users. The present method allows to vary the scaling in a very few steps. A novel method is proposed in the paper which can vary the scaling with more granularities. The signal quality fluctuates significantly with user speed in the conventional method but the proposed method can satisfactorily stabilize the signal quality. The proposed method allows optimized settings for scaling based on the scenario.
Microcontroller Based Joystick Controlled Wheelchair
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Mahmud, Md. Salek; Rahman, Towfiq-ur-; Hossain, Md. Delwar
When people are unable to walk properly due to old age or as a result of some accident or paralysis due to stroke they may often lose their ability to control their movement and means to travel from one place to another.The prime objective of this research was to develop a prototype system which can provide mobility assistance to individuals.This thesis investigates the method of locomotion via a wheelchair which is controlled using input from a joystick and is analyzed via a microcontroller and out drives the motor. This thesis also consider the design consideration of a simple, low cost battery driven wheelchair where the control is achieved using a microcontroller. Two dc motors are differentially driven using PWM signal from microcontroller which provide easy control over speed and direction. There are further proposed design consideration which includes self-sustaining power supply using PV cells with the wheelchair and also long distance wireless control and use of sensors for autonomous control of the wheelchair.
Remote Data Acquisition System Using FPGA
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Bustam, Husnain Al; Rahman, Nafiz Ur; Ferdous, Ibna Idrish
Single cost-efficient VLSI chip nowadays turns out to be a solution to microelectronic design problems. In these designs embedded system architectures are used which are comprised of software programmable components accompanied with dedicated hardware processing modules integrated into the VLSI chip [1]. Also emerging new designs which are based on heterogeneous embedded system architectures, offer flexible low-cost design in a short design cycle, integrating multiple software programmable components together with dedicated hardware components into a single cost-efficient VLSI chip. With the help of new technology it has now become possible not only to introduce programmability in these single chip architectures but also maintaining most of the advantages of customized VLSI solutions [1].Once some applications which were too difficult for computing hardware, now with impressive advances in Very Large Scale Integration (VLSI) technology are becoming more feasible[2]. Utilizing the prebuilt logic blocks and programmable routing resources engineers and designers now configure FPGAs (FPGA stands for Field Programmable Gate Array) to implement custom hardware. The configuration of FPGA is specified with the help of hardware description language. FPGA technology is now adopting among the engineers scientists at all levels of expertise as higher level tools evolve to deliver the fruits of reprogrammable silicon [2]. The “Remote Data Acquisition System Using FPGA” has been entirely implemented on the FPGA of the Spartan-3E Starter Kit. DAQs are complex systems which are the basis for building and monitoring tools that enable the supervision of local and remote systems. Data is transferred from the data loggers via radio telemetry, cellular, serial ports, Ethernet, satellite peripherals etc. The mobility and flexibility of the data loggers and sensors make the applications of this technology limitless. In everywhere we can see the magical touch of science and engineering in the present world which enables human being to have the maximum comfort and security of life. In that contrast our developed data acquisition system is such a device that could be used for biomedical applications, nuclear research, or data acquisition from such a place where the presence of human being is risky as well as harmful, for the example in the radioactive areas. The vi developed system will communicate through the SMSC LAN83C185 Ethernet PHY with remote pc via internet. Of course the Ethernet port of the Spartan-3E starter kit has to be interfaced with the personal computers as well as that pc should be connected with the remote pc through internet. The configuration of the PCs used in this R and D work- Intel® Desktop Board DG41WV mother board which has LAN support Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Realtek* RTL8111D Gigabit Ethernet Controller and Intel® Core™2 Duo Processor. The data transfer rate of the Ethernet port of Spartan-3E starter kit is 10/100 Mbits/Sec. So our developed system could transfer data at the rate of 10/100 Mbits/Sec. National instrument DAQ interfaced with the ADC of the Spartan-3E starter kit to acquire analog signal from the outer world. The ADC process the digital data to FPGA, therefore those data is processed through the SMSC LAN83C185 Ethernet PHY to the personal computer of the concerned person who intended to acquire and send that data through internet in a remote place. The graphical control of the system has been developed using the LAB VIEW program.
Strain Imaging Technique by 2D Plate Smoothing Spline Method
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Islam, Md. Tariqul; Haque, Md. Imtiazul; Hakim, Safayat Bin
Solar Tracking Device
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Nyeme, Md.Zulkar; Rahman, Md.Towfiqur
The recent decades have seen the increase in demand for reliable and clean form of electricity derived from renewable energy sources. As we are on the verge of exhaust-ing fossil fuels, we require some other promising energy source to fuel our daily needs. Solar energy is the one of best option for the primary source of energy in the future, as it is renewable, eco-friendly and safe to use. An Intelligent Solar Tracker is a device (onto which solar panels are fitted) which tracks the motion of the sun across the sky ensuring that the maximum amount of sun-light strikes the panels throughout the day. The Intelligent Solar Tracker will attempt to navigate to the best angle of exposure of light from the sun. The challenge remains to maximize the capture of the rays from the sun for conversion into electricity. This paper presents the steps of implementing a single-axis solar tracking controller. This is done so that rays from the sun fall perpendicularly unto the solar panels to maximize the capture of the rays by pointing the solar panels towards the sun and following its path across the sky,hence increasing electricity and efficiency.
Solar Tracking Device
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Nyeme, Md.Zulkar; Rahman, Md.Towfiqur
The recent decades have seen the increase in demand for reliable and clean form of electricity derived from renewable energy sources. As we are on the verge of exhaust-ing fossil fuels, we require some other promising energy source to fuel our daily needs. Solar energy is the one of best option for the primary source of energy in the future, as it is renewable, eco-friendly and safe to use. An Intelligent Solar Tracker is a device (onto which solar panels are fitted) which tracks the motion of the sun across the sky ensuring that the maximum amount of sun-light strikes the panels throughout the day. The Intelligent Solar Tracker will attempt to navigate to the best angle of exposure of light from the sun. The challenge remains to maximize the capture of the rays from the sun for conversion into electricity. This paper presents the steps of implementing a single-axis solar tracking controller. This is done so that rays from the sun fall perpendicularly unto the solar panels to maximize the capture of the rays by pointing the solar panels towards the sun and following its path across the sky,hence increasing electricity and efficiency.
Comparison among Different Beam Forming Algorithms used in Smart Antenna System for 3G+ Mobile Communications
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Islam, Md. Rezwanul; Wahiduzzaman, Md.; Tanmoy, M. M. Reazul Haque
Smart antenna manipulates the impinging signals on various antenna elements through array processing so that the main lobe is formed towards the desired direction and nulls are placed towards the interference or unwanted directions. Direction of Arrival (DOA) estimation is an important part of direction of arrival based beam forming. The direction of arrival algorithm computes the angle of arrival of all impinging signals. A systemic study of smart antenna system and comparison of the performance of the Bartlett and MUltiple SIgnal Classification(MUSIC) DOA algorithms along with different non blind beam forming algorithms through simulation have been extensively analyzed in this thesis work. Our comparative analysis shows that MUSIC algorithm is highly accurate and stable and provides high angular resolutions compared to Bartlett algorithm. So MUSIC algorithm can be widely used in mobile communication to estimate the DOA of arriving signals. Among LMS, SMI, RLS beam forming algorithms RLS algorithm is the fastest to converge the weights through least computational complexity.
Simulations and Performance Analyses of Multi-user Alamouti’s Space Time Block Coded MIMO CDMA Systems
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Mamun, M. Shahriar; Hussain, Jamil; Haque, Md. Hasibul
This thesis explores Code Division Multiple Access (CDMA) systems and conducts a comprehensive study of its fundamentals. CDMA has already made a firm position in the arena of fast growing 3G communications and vanquished by reigning over other multiple access technologies, for its use of spread-spectrum technique and provision of providing a robust transmission by combating various channel impairments. Further advanced studies have been done on space time block coded CDMA systems for multi-user which yields a new standard for transmission over Rayleigh fading channels using multiple transmit antennas. The combination of space time block code and CDMA system has the aptitude of increasing performance in cellular network. With a simplistic approach, the performance of this system is compared with the typical CDMA system which manifests that, using space time block code and multiple transmit antennas for multi-user CDMA system provide remarkable performance without any need of extra processing or sacrifice in bandwidth. Along with space-time block code, space-time trellis code is also analyzed and compared theoretically on the basis of MIMO implementation, with extended performance evaluation. For further performance analyses, diversity techniques have been manifested and this insight has been comprehended by mathematically manipulating Alamouti’s transmit diversity scheme, which surely offers remarkable performance improvement, which, later, has been justified from the results obtained from simulations.
Wireless Sensor Network: applications and Analysis of Routing Protocols
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Jalil, Lukong Abdu; Walizada, Nasratullah; Hassani, Said
Wireless sensor networks consist of small nodes with sensing, computation, and wireless communications capabilities. Recent advances in wireless sensor networks have led to many new protocols specifically designed for sensor networks where energy awareness is an essential consideration. Most of our attention, however, has been given to the routing protocols since they might differ depending on the application and network architecture. A wireless sensor network (WSN) has important applications such as remote environmental monitoring and target tracking. This has been enabled by the availability, particularly in recent years, of sensors that are smaller, cheaper, and intelligent. These sensors are equipped with wireless interfaces with which they can communicate with one another to form a network. The design of a WSN depends significantly on the application, and it must consider factors such as the environment, the application’s design objectives, cost, hardware, and system constraints. This project surveys recent routing protocols for sensor networks and presents detailed account of various routing protocols. The project also talks about the basic network topologies in wireless sensor network. The basic network topologies include fully connected, mesh, star, ring, tree, bus etc. Again we have presented various system architectures, design issues and challenges in wireless sensor network. Solution to some of these challenges and the applications of wireless sensor networks are also provided. Lastly we conclude with open research issues in WSN
Performance comparison among MIMO techniques at different interference levels for LTE
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Sabri, Yussef Ali; Thiam, Mamadou; Warsame, Mohamed abdullahi
Linear and non linear controller design for DC-DC converter
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Aslam, Muhammad Faizan; Fateh, Saif-Al-Islam; Anwar, Muhammad Usman
DC-DC power converters play an important role in powering telecom and computing systems. With the speed improvement and cost reduction of digital control, digital controller is becoming a trend for DC-DC converters in addition to existed digital monitoring and management technology. In this thesis, digital control is investigated for DC-DC converters applications. To deeply understand the whole control systems, DC-DC converter models are investigated based on averaged state-space modeling. Considering Buck DC-DC converter, the thesis takes it as an example for digital control modeling and implementation. In Chapter 2, unified steady-state DC models and small-signal models are developed for DC-DC buck converters. Based on the models, digital controller design is implemented in Chapter 3. In Chapter 4, Fuzzy logic control is introduced and based on that knowledge Fuzzy controller is designed for the control of buck converter. It should be noted that Fuzzy logic control provides superior performance than conventional PI and PID controller especially during under load transient condition.
Design and implementation of digital controllers for buck converter using linear and nonlinear control methods
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Ali, Majid; Khan, Safiullah; Waleed, Muhamad
DC-DC power converters play an important role in powering telecom and computing systems. With the speed improvement and cost reduction of digital control, digital controller is becoming a trend for DC-DC converters in addition to existed digital monitoring and management technology. In this thesis, digital control is investigated for DC-DC converters applications. To deeply understand the whole control systems, DC-DC converter models are investigated based on averaged state-space modeling. Considering Buck DC-DC converter, the thesis takes it as an example for digital control modeling and implementation. In Chapter 3, unified steady-state DC models and small-signal models are developed for DC-DC buck converters. Based on the models, digital controller design is implemented. In Chapter 4, digital modeling platforms are established based on Matlab, Digital PID design and corresponding simulation results are provided. Also some critical issues and practical requirements are discussed. In Chapter 6, a DSP-based digital controller is implemented with the TI‘s DSP chip TMS320F2812. Related implementation methods and technologies are discussed.
Design and Simulation of an Aircraft & Missile System & Optimal Tuning of both Using Pid & Differential Algorithm (DE)
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Shahin, Md. Zahidul Islam; Iftekhar, Ahmed Tashfin; Mahmud, Tanvir Hassan
This thesis tries to develop a model for the missile and for the aircraft simply using those dynamic force model and transfer function and to explore the potential of using soft computing methodologies such as Evolutionary algorithm(EA) –Differential algorithm(DE) in controllers and their advantages over conventional methods. PID controller, being the most widely used controller in industrial applications, needs efficient methods to control the different parameters of the plant. This thesis asserts that the conventional approach of PID tuning is not very efficient due to the presence of nonlinearity in the system of the plant. The output of the conventional PID system has a quite high overshoot and settling time. Two problem has been taken from a paper which has been considered as the dynamic model for missile and aircraft ,based on those problem the project progress. The main focus of this project is to apply evolutionary algorithm such as differential algorithm to design and tuning of PID controller to get an output with better dynamic and static performance. The application of differential algorithm(DE) to the PID controller imparts it the ability of tuning itself automatically in an on-line process makes it give an optimum output by searching for the best set of solutions for the PID parameters. The project also discusses the benefits and the short-comings of both the methods. The simulation outputs are the MATLAB results obtained for a step input .
Design of microcontroller based baby incubator
(Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur-1704, Bangladesh, 2012-11-15) Abid, Fahim; Patoary, Shajjied Hossan; Rahman, Md. Salman
Infant incubator provides a controlled environment for newborns needing special care, such as those born prematurely. By placing an infant in an incubator, doctors and nurses can set and monitor different aspects of the child’s environment in order to create ideal conditions for survival and moreover it protect infants from pollutants and infection. Infant incubators and other advances in medical technology have made it possible for small or premature babies to survive in higher numbers than they did in the middle of the 20th century. Design and development of microcontroller based temperature and humidity controller for an infant incubator monitors and controls these two parameters constantly which are very critical for the normal growth of the new born (premature) babies In this thesis work, focus has been to develop: 1. Hardware for temperature and humidity control 2. Compatible software This system can automatically control the infant’s temperature at optimum level usingPID concept and to maintain high relative humidity so as to minimize the thermal loss. The developed system must be user friendly, cost effective and accurate.