Ultrasonic Flaw Detection
|
| Principal Investigator (PI) |
: Burak Acar - acarbu@boun.edu.tr |
| Semester |
: 2009-2010/2 |
| Description |
: The project involves building a ultrasonic non-destructive system for materials inspection. The principle is sending ultrasonic waves into a material through a coupling medium like water and receiving the reflected waves. The flaw exhibits itself as a reflected wave and the depth of the flaw is measured from the time of flight. If the time of flight data is mapped against the coordinates, a 3-D visualization of the flaws can be constructed. The parts of an existing system will be integrated for a new system and a software will be developed for flaw visualization. |
|
MICROFABRICATED FIBER OPTIC TRANSMISSION PLATFORM
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: This project aims to integrate the fiber cables of 125 micron diameter
with a microfabricated Silicon platform for optical communication and
power transmission. Such a system is a crucial ingredient of the optically
powered receiver to be used in magnetic resonance imaging system. Since metals
are heated in the presence of RF magnetic fields, the reciever which is held
in the MRI dequipment has to communicate with external equipments using
optical (i.e. conductor free) paths.
Following tasks will be performed by the student:
* Litterature study about fiber optic alignment, photodiodes and LEDs
* Optical design of the proposed system
* Design of lithography masks for KOH etch process
* KOH etch of Silicon substrates
* PCB Base for wire bonding and CMOS IC / Fiber platfor integration
* Optical measurments for power and signal transmission
|
|
DESIGN OF A SUB 1-DB NF ULTRA LOW-NOISE AMPLIFIER AT 123 MHZ
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: This project will deal with design and implementation of an
ultra low noise amplifier with sub 1-dB noise figure. The amplifier
will be used to process the magnetic resonance imaging system operating at
3 Tesla. It is important to design both the amplifier and the receive
antenna which play efficient roles in increasing the signal-to-noise
ratio of the overall receiver block.
Following tasks will be performed by the student:
* Litterature study about low-noise amplifiers and basic MRI operation
* Design of the ULNA using ADS simulation tool
* PCB implementation of the circuit
* Measurement of the characteristics of the amplifier using
Vector Network Analyzer and Noise Figure Meter
|
|
DESIGN AND FABRICATION OF GLASS/POLYMER MICROSCANNERS
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: Scanned light beams are used to produce display images for a
wide variety of applications, including such applications as
automotive head-up displays and head-worn displays. A micromirror
producing angular motion is used to deflect a modulated light beam
on an image plane to create a display. In order to construct a
two-dimensional rasterlike rectangular image, the mirror is rotated
about two orthogonal axes at different frequencies. In this project,
we aim to produce a 2D laser scanner composed of 2 different materials,
namely glass and FR4. The design will aim a slow-scan (horizontal-scan)
frequency of 60 Hz (polymer part) and a fast-scan (vertical-scan)
frequency of 8 kHz and above (glass part).
Following tasks will be completed:
* A litterature search on glass wet eching/micromachining techniques
* Process characterization of glass substrates
* 2D scanner design and simulations
* Layout design of the photomasks for fabrication
* Fabrication of glass MEMS structure and integration with polymer
substrate
* Characterization of the device
|
|
Digital Video Enhancement
|
| Principal Investigator (PI) |
: Burak Acar - acarbu@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: Co-PI(s): Fahrettin Basaran from Arcelik A.S. (formerly BEKO A.S.). The project aims at testing currently reported and developing new algorithms for real-time enhancement of digital video for higher audience satisfaction. The enhancement involves edge (structure) enhancement, color enhancement and denoising. The project is run in collaboration with Arcelik A.S. (formerly BEKO A.S.). |
|
Pre/Post-Operation Deformation Analysis for Orthodontic Operations
|
| Principal Investigator (PI) |
: Burak Acar - acarbu@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: Co-PI(s): Dr.Banu Çakırer (Marmara University, Faculty of Dentistry Department of Orthodontics). The orthodontics aims at preventing and correcting irregularities of the teeth and the jaws. On patients with craniofacial deformities it is possible to create a proportional face with a beautiful smile with the assistance of jaw surgery. The evaluation of 3D head CT data of these patients is important to be able to plan the treatment and to determine the outcome of the surgery. |
|
Liver Vessel Segmentation in 3D CT Data
|
| Principal Investigator (PI) |
: Burak Acar - acarbu@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: Co-PI(s): In collaboration with Stanford University, Medical School, Department of Radiology, 3D Lab, USA and Capa Medical School, Istanbul University, Istanbul. The recently started CaReRa project at VAVlab aims at developing a Content Based Case Retrieval (CBCR) system for liver patients. CBCR is an extension of the more known Content Based Image Retrieval (CBIR) and includes non-image data as well. Yet, the first major component of CBCR is a CBIR system. Content description of 3D liver CT images is a critical step for this, which requires an accurate segmentation of the liver and the lesions (if exist). Liver lesion segmentation is complicated because of the vessels on the liver that may mimic lesions in terms of CT (pixel) values. Consequently, an accurate liver and liver vessel segmentation prior to lesion segmentation is important. The project involves the development and implementation of a vessel segmentation algorithm given the liver segmentation result.
|
|
Diffusion Tensor MRI Segmentation
|
| Principal Investigator (PI) |
: Burak Acar - acarbu@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: Co-PI(s): In collaboration with Yeditepe University Hospital, Istanbul and The Friedrich-Alexander University Erlangen-Nuremberg, Germany. The human brain mapping refers to understanding the functional and the physiological structure of human brain. This project is concentrated on the physiological structure as revealed by DT-MRI imaging technique. DT-MRI is a relatively new technique with increasing importance, esp in understanding diseases like multiple sclerosis, alzheimer’s disease, etc. The data consists of a 3D tensor field that correlates with oriented structures (nerves) in brain. Virtual nerve (fiber) tracts can be reconstructed as well as probabilistic connectivity maps can be estimated from this data. The overall goal can be seen as a Physiological Connectivity Based Segmentation.
The optic radiation segmentation in DTI data is one of the primary clinical goals of the project. The visual function depends on the optical quality of the transparent media of the eye and on the integrity of the visual pathway beginning with the optic nerve head of the eye and ending with the 4th neuron in the visual cortex. Visualization of the visual pathway is of relevant impact for the diagnosis and therapy of eye diseases, i.e. glaucomatous optic nerve atrophy. Monitoring of the 4th neuron in those patients may be useful to supervise progression of the disease and to survey the response to treatment.
A software platform, called DTInteract, has been developed at VAVlab. The project involves C++ implementation of the new algorithms and integration into DTInteract.
|
|
Digital Rights Protection Project: Measuring the Performance of Existing Fingerprinting Methods
|
| Principal Investigator (PI) |
: F. Kerem Harmancı - harmanci@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: This project is about digital rights management of images. The objective is to test the performance of existing fingerprinting techniques for collusion resistance and detection performance under different geometric attacks such as rotation, scaling, cropping and translation. Fingerprinting enforces digital rights whereby unique labels, known as digital fingerprints are inserted (watermarked) into the image prior to distribution. |
|
Collaborative Control Applications in Mobile Robot Networks
|
| Principal Investigator (PI) |
: Mehmet Akar - mehmet.akar@boun.edu.tr |
| Semester |
: 2009-2010/1 |
| Description |
: The objective of this project is to advance the current state of the BRocks team which competed in Robocup 2009 that was held in Austria. RoboCup is a competition platform whose ultimate goal is to develop a team of fully autonomous humanoid robots that can win against the human world champion team in soccer by the year 2050. Competitions are held in various categories, including SSL in which the competitors build their own robots. We are looking for motivated students who are willing to carry out their 491/492 projects in one of the following areas: 1) PCB design and development (electronics or controls option) 2) Image processing (communications or controls options) 3) brushless DC motor control and higher level strategy development. |
|
Coordinated Motion of 3D Particles – Robot Flocks & Protein Folding
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/2 |
| Description |
: The purpose of this project is to study the motion of particles in 3-dimensional space with two applications in mind: motion planning of a flock of robots and protein folding. The student(s) will be participating in an ongoing MS project which has been studying the problem for some time and using/will be doing code development on a Java-based simulator designed and built with this purpose. |
|
Automated PCB Inspection
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/2 |
| Description |
: The purpose of this project is to work on a system that has been previously designed for automated inspection of PCBs in order to expand the capabilities of the system – including multi-platform image acquisition and learning. |
|
Tracked EDAR-G3 Robot
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/2 |
| Description |
: The purpose of this project is to work on the systems development of our third generation tracked robot EDAR G3. This will be a coordinated effort with a group of ME students.The student(s) will be responsible for getting the EDAR electronics (main CPU card, driver cards, dc motors for the linear and rotational motion) into working status. |
|
Computer Based LED Control
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/2 |
| Description |
: The purpose of this project is to design and deveop the electronics and software for computer based control of a LED based lighting system. |
|
Power-line based Remote Device Access
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/2 |
| Description |
: The purpose of this project is to design and deveop the electronics and software for power-line based remote device access via X10 protocol. |
|
Design and Realization of Low-Power Low-Noise Amplifiers
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The low noise amplifier (LNA) is a special type of electronic amplifier used in communication and medical systems to amplify very weak signals.
The low power LNA is one of the main components of medical systems. The use of discrete components in LNA design is problematic due to various parasitic effects caused by interconnections between components. On the other hand, when a specific LNA design is needed, I:C design can be time consuming and expensive. In this project a low power LNA will be designed by using discrete circuit components and the design will be compared with IC counterparts. The aim of the project is investigating low power LNA design and their possible use in medical systems.
During the project, student needs to complete the following tasks:
- Literature search about low power LNA design
- Determination of the frequency and power characteristics of the LNA
- Design and SPICE simulations of various LNA topologies (incorporating the circuit parasitics)
- Circuit realization and test of designed LNAs
- IC Layout of the designed LNA and post layout simulation and comparisons
|
|
Design and Realization of Laser-based Optical Energy Scavenging Systems
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Energy scavenging is the process by which energy is captured and stored.
A variety of different sources exist for scavenging energy, such as solar power, thermal energy, wind energy, salinity gradients and kinetic energy. Solar energy scavenging is a common and well known optical energy scavenging method. On the other hand, laser based optical energy scavenging systems, which can be used in various portable applications or/and medical applications, are rare in literature. In this project, an electrical circuit which is powered by a laser-based optical energy scavenging system will be designed. In the project lasers will be used as the power source. The optical power will be converted to the electrical power by the photodiodes in order to be used in an electric circuit.
The aim of the project is investigating the laser-based optical energy scavenging methods and stating their advantages or disadvantages over the other energy scavenging systems, such as capacitive energy scavenging.
During the project, student needs to complete the following tasks:
- Literature survey of energy scavenging systems
- Design and SPICE simulations of various voltage and current multiplier configurations
- Circuit realization and test of designed voltage and current multipliers
- Design and SPICE simulations of an optical energy scavenging system (incorporates the voltage (or current) multiplier)
- Circuit realization and test of designed optical energy scavenging system
- Design of a test circuit which powered by realized scavenging system. |
|
Design and Fabrication of a PolymerLED integrated miniaturized MEMS Display
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Light emitting Diodes in which organic compounds are used as the emitting layer material are known as an Organic Light Emitting Diode (OLED). To function as
a semiconductor, the organic emitting material must have conjugated pi bonds. The emitting material can be a small organic molecule in
a crystalline phase, or a polymer. Polymer materials can be flexible; such LEDs are known as PLEDs or FLEDs. Compared with regular LEDs,
OLEDs are lighter, and polymer LEDs can have the added benefit of being flexible. Today, OLEDs have been used to produce visual displays
for portable electronic devices such as cellphones, digital cameras, and MP3 players.
In this project,
In this project, a miniaturized MEMS display will be designed and fabricated. The design will aim a slow-scan (horizontal-scan)
frequency of 60 Hz and will consider the integration of OLED with MEMS actuator. During the project, student needs to complete the following tasks:
- Design of the MEMS actuator analytically
- Finite Element MEthod (FEM) simulations of the device
- Layout design of the photomasks for fabrication
- OLED layout design and fabrication
- OLED and MEMS actuator integration |
|
Analog and Digital LED Driving & Modulation Methods
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: LEDs are widely used as indicator lights on electronic devices and increasingly in higher power applications such as flashlights
and area lighting. In this project LEDs are integrated on a MEMS actuator and to create together a novel type of minituarized display.
MEMS actuator functions as 1D scanner in vertical axis at 60HZ of scanning frequency. A LED array integrated on this actuator will be
modulated approximately at 8kHz to create an horizontal scan axis in order to be able to produce a 2D MEMS miniaturized display.
There will be two distinct parts of this project. LED dies will be driven and modulated using both analog and digital methods.
At the end of the project, these methods will be compared regarding their performance and fabrication convenience.
As for the digital driving and modulation, the student will do the followings:
- MAX6946 LED driver development board tests;
- Learn MAX6946 working principles and programming techniques.
- Making a PCB using MAX6946 and SMD LEDs (or LED dies,wire bonding included!);
- Power calculations and measurements.
- Current vs Luminance measurements using integrating sphere.
- Contrast ratio calculations and measurements.
For the anolog part:
- Designing an analog LED driver/modulator;
- Simulations and calculations
- Making a PCB using discrete active and passive components, SMD LEDs(or LED dies,wire bonding included!);
- Power calculations and measurements.
- Current vs Luminance measurements using integrating sphere.
- Contrast ratio calculations and measurements. |
|
Simulated and Experimental Study of Boost Converter Using Sliding Mode Control
|
| Principal Investigator (PI) |
: Okyay Kaynak - kaynak@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: A boost converter (step-up converter) is a power converter with an output DC voltage greater than its input DC voltage. The purpose of this project is to design a sliding mode controller for a Boost Converter and implement it on hardware by using a dSPACE card.
The project will consist of two main stages:
1. Simulation studies of the overall (open loop and closed loop) system and open loop hardware design and its implementation,
2. Closed loop control of the hardware by using a dSPACE card. |
|
Efficient Wireless Video Transmission for home entertainment systems
|
| Principal Investigator (PI) |
: Emin Anarım - anarim@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Project PIs: Emin Anarim, Tolga Kurt (Airties), Mutlu Koca, Mehmet Akar.
Wireless video distribution in home networks is one of the upcoming trends of
home entertainment systems.
One of the major problems in wireless video distribution over Wi-Fi networks
is interference. Wireless video unlike data have very low tolerance to jitter and delay.
Therefore, interference should be avoided as much as possible.
Among the available channels, the best one should be selected automatically
without affecting the existing streaming video transmission.
This selection and channel change procedure should be effectively
handled in multi-hop mesh networks utilizing IEEE 802.11n standard.
Airties Wireless Networks and Boğaziçi University will be investigating
these issues in a joint project. The research and development activities
related to the project.
Specific research topics can be listed as follows:
· Interference avoidance in single-hop wireless video distribution
· Interference avoidance in multi-hop wireless video distribution
· Optimizing transmission modes for wireless video
· Analyzing further issues with wireless video distribution
· Generating sub-products to the wireless video roadmap
The project is made up of three phases: the preliminary investigation
in the first two months, the test and analysis in the second two months,
followed by the development in the final stage.
|
|
DESIGN OF STEEL MICROMIRRORS
|
| Principal Investigator (PI) |
: Arda Yalçınkaya - arda.yalcinkaya@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Scanned light beams are used to produce display images for a wide variety of applications, including such applications as automotive head-up displays and head-worn displays. A micromirror producing angular motion is used to deflect a modulated light beam on an image plane to create a display. In order to construct a two-dimensional rasterlike rectangular image, the mirror is rotated about two orthogonal axes at different frequencies. In this project, a micro-mirror to be fabricated using a steel machining process, will be designed. The design will aim a slow-scan (horizontal-scan) frequency of 60 Hz and a fast-scan (vertical-scan) frequency of 4 to 8 kHz.
In this project, student needs to complete the following tasks:
- Design of the mirror scanner analytically
- Finite Element MEthod (FEM) simulations of the device
- Layout design of the photomasks for fabrication
|
|
Portable Laser Projector
|
| Principal Investigator (PI) |
: Şenol Mutlu - senol.mutlu@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: In this project an already micromachined steel micro mirror will be used to form a 2D image using a laser-diode and the necessary optics. The steel micro mirror is actuated electromagnetically. The mirror is designed so that it can scan both in x and y directions depending on the frequency of the applied electrical signal. As the mirror is actuated, it steers the laser beam to form a 2D image on a wall. Circuits needed for the actuation of the micro mirror and circuits needed to drive the laser have already been implemented. In this project, students need to do the following:
-To form a USB link between a computer and the portable laser projector.
-To prepare a GUI (Graphical User Interface) on the computer. The pictures or texts displayed on this GUI will be projected on a wall by the laser projection system.
-To design a compact package that houses the micro mirror, laser and the necessary lens. |
|
Design of a Small Electric Monopole or a Magnetic Dipole Antenna
|
| Principal Investigator (PI) |
: Heba Yüksel - heba.yuksel@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop an electric monopole or a magnetic dipole small antenna using a simple design. An electrically small antenna would also contain an inductor to reduce the operating frequency without enlarging the size of the antenna. Similarly the operating frequency of a magnetic small antenna can be controlled with the use of capacitors. The antennas can be made of pure copper or they can be processed on the Roger 5880 Duroid plate which is covered by copper with the thickness of 17ƒİm. During the design process, Ansoft HFSS and Ansoft Designer softwares will be used extensively for the optimization of the design at the desired resonant frequency of the antenna. Ansoft HFSS is a software which allows the user to draw three dimensional antenna samples and then run their radiation simulations. The simulation results should contain information about the 2D and 3D radiation patterns of the structure, the S-Parameters in a logarithmic scale, and the radiation efficiency or the directivity of the antenna. The Ansoft Designer needs to be used for the simulations when the antenna structure contains lumped circuit elements such as resistors, capacitors or inductors. |
|
Analyzing Turbulence in a One Meter Water Tube For Free Space Optical Communication Applications
|
| Principal Investigator (PI) |
: Heba Yüksel - heba.yuksel@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Direct line-of-sight optical communication links, which are commonly called “optical wireless” systems or free space optical (FSO) communication links are becoming increasingly popular. Such links can provide virtually unlimited bandwidth at a relatively low cost and high performance communication over short distances up to a few kilometers. Unfortunately, the atmosphere is not an ideal communication channel. Atmospheric turbulence can cause fluctuations in the received signal level, which increase the bit errors in a digital communication link. In order to quantify the performance limitations, a better understanding of the effect of the intensity fluctuations on the received signal at all turbulence levels is needed. The purpose of this project is to develop an experimental setup to analyze turbulence and aperture averaging of a He-Ne Laser Beam propagating through a heated 1-meter water tube emulating 1km of free space. The setup will give the convenience of controlling the turbulence level in a lab setting through adjusting the water temperature instead of relying on the height above the ground or the air temperature in a free-space setting. The turbulence index parameter Cn2 should be very different for water than it would be for air, but the effect of the receiver size on power variance “Aperture Averaging”, should exhibit similarities in both scenarios. |
|
An Optical Multi-Touch Sensor Implementation
|
| Principal Investigator (PI) |
: Heba Yüksel - heba.yuksel@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop a novel multi-point optical touch sensor using a simple design. A touch sensor can be developed using LEDs, plastic optical fibers, photo-detectors, and a micro-controller. The sensor should use the micro bending concept of optical fibers in a two dimensional mesh orientation where the bends of the fibers are comparable to its radius so that energy coupling and radiation occurs into the cladding at the bending regions. As a result bends act as “sensing points” for human touch since the power absorbed by the human skin at these points will decrease the power received at the end of the fiber. |
|
A Geometrical Optics Approach for Modeling Aperture Averaging in Free Space Optical Communication Applications
|
| Principal Investigator (PI) |
: Heba Yüksel - heba.yuksel@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Intensity scintillation and beam wander caused by atmospheric turbulence are two significant phenomena that affect free space optical (FSO) communication links. Intensity fluctuations at the receiver lead to a received power variance that depends on the size of the receiver aperture. Increasing the size of the receiver aperture reduces the power variance. This effect of the receiver size on power variance is called aperture averaging. If there were no aperture size limitation at the receiver, then there would be no turbulence-induced scintillation. In practice, there is always a tradeoff between aperture size, transceiver weight, and potential transceiver agility for pointing, acquisition and tracking (PAT) of FSO communication links. The purpose of this project is to develop a geometrical simulation model to predict the aperture averaging factor and beam wander of a Gaussian beam propagating through a simulated turbulent medium. |
|
Image Analysis of Intensity Scintillation Patterns on a Free Space Optical Communication Link
|
| Principal Investigator (PI) |
: Heba Yüksel - heba.yuksel@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Even after several decades of study, inconsistencies remain in the application of atmospheric turbulence theories to experimental systems, and the demonstration of acceptable correlations with experimental results. An imaging system for measuring the effects of atmospheric turbulence and obscuration on a free space optical (FSO) communication link has been constructed. A He-Ne laser beam propagates over a range of 863 meters in atmospheric turbulence conditions that vary diurnally and seasonally from weak to strong. A high performance digital camera with a frame-grabbing computer interface is used to capture received laser intensity distributions at rates up to 30 frames per second and various short shutter speeds, down to 1/16,000s per frame. In this project, a LabVIEW code should be developed to analyze the captured image frames from the given FSO link to evaluate the turbulence index parameter Cn2, temporal and spatial intensity variances, and aperture averaging. Such analysis should be compared with existing theories for the development of new theories. |
|
Bayesian Texture Defect Detection
|
| Principal Investigator (PI) |
: Ayşin Ertüzün - ertuz@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to apply Bayesian concepts to automated quality inspection more specifically to defect detection problem in textile images. |
|
Texture Defect Detection by Dual-Tree Complex Wavelet Transformation
|
| Principal Investigator (PI) |
: Ayşin Ertüzün - ertuz@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to apply complex wavelets to the defect detection problem. Complex wavelets will be compared with real wavelets. They both will be used for extracting features from images and for image classification to label defective images. |
|
CCA Based Texture Defect Detection
|
| Principal Investigator (PI) |
: Ayşin Ertüzün - ertuz@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to apply Canonical Correlation Analysis (CCA) concepts to automated quality inspection more specifically to defect detection problem in textile images. |
|
Measuring Rotation Rate and Accleration of an Object Using Gyroscopes and Accelerometers
|
| Principal Investigator (PI) |
: Şenol Mutlu - senol.mutlu@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Gyroscopes and acceloremeters are part of inertial sensors. Gyroscopes measure rotation rates. Accelerometers measure acclerations. In this project, using commercially available MEMS gryoscopes and accelerometers, rotation rate and accleration of an object will be measured. Electronic readout circuit for these inertial sensors will be made on a PCB. Measurements made with the circuit will be transfered to a computer. A grafical user interface (GUI) will be implemented to display these measurements real time on a computer. For example if you rotate the object, on which the sensors are, a virtual object on the computer will simultaneously rotate at the same rotation rate as the real object. |
|
Inductively Coupled Wirelessly Powered Light Emitting Diodes and Sensors
|
| Principal Investigator (PI) |
: Şenol Mutlu - senol.mutlu@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop an inductively
coupled wireless system. The first simple system will power a light emitting diode
wirelessly that is couple centimeters away. The second system should be able to power
up a wireless circuit that has no battery and should be able to read the digital or the sensor
data stored in that circuit. This system is similar to RFID systems. |
|
Speech recognition driven reading tutor
|
| Principal Investigator (PI) |
: Murat Saraçlar - murat.saraclar@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop a reading tutor that
uses automatic speech recognition to verify the user inputs. The tutor should provide
feedback, encouraging students, and pointing out mistakes. The underlying speech
recognizer should be accurate enough to judge the correctness of the inputs. |
|
Digital Oscilloscope Adapter Unit for a PC
|
| Principal Investigator (PI) |
: Avni Morgül - morgul@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to produce a digital storage oscilloscope to
operate as an adapter to any PC. The project consists of three tasks:
i) Design and construct a 9-bits or 10 bits Analog-to-Digital converter block with high input
impedance and high speed.
ii) Design and construct a USB interface between the A/D converter hardware and PC and writing
the necessary software modul for the interface.
iii) Writing the high level software on the PC to display the waveforms and do the necessary
measurements and calculations (Frequency, amplitude, RMS, FFT etc.)
|
|
Design and Implementation of Log-Domain Analog Filter Structures
|
| Principal Investigator (PI) |
: Oğuzhan Çiçekoğlu - cicekogl@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Log-domain filters are a sub-class of externally linear
internally non-linear (ELIN) filters. In this class of filters the signal is processed in a nonlinear
way, usually in compressed form to avoid distortion due to large signal peaks.
However the input output transfer function is a linear transfer function. In this type of
filters it is possible to build analog filters employing only bipolar transistors and
capacitors. Therefore very simple filter structures are possible. Mainly two techniques are
well-known in the literature.
The purpose of the project is to design several biquadratic filters in the log domain using
the well-known techniques. The designed filters will be tested and improved if necessary.
The designs will be compared with those in the literature, discussed and improvement
possibilities will be studied.
ELIN filters attract increased attention since electronic components are themselves nonlinear
and this non-linearity is directly used in the designs. The design philosophy is
therefore completely different from the classical approach that was dominant in the last
few decades. |
|
Improved Design of Chaotic Circuits
|
| Principal Investigator (PI) |
: Oğuzhan Çiçekoğlu - cicekogl@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Description of the project: The purpose of this project is to investigate the operation of
various chaos-generating circuits in the literature. Chaotic signal generation circuits find
application in secure communication instrumentation. Chua circuit, piecewise linear
Rossler circuit, hysteretic circuit, piecewise linear Duffing, 2 attractor circuit and others
will be built in the laboratory and tested. Improvement and simplification possibility of
these circuits will be taken into consideration. The possibilities to modify some circuit
parameters in an analog manner will be investigated. Next step is to design and propose
alternative circuits to those well known. Comparison in terms of various performance
parameters is to be made. |
|
Solutions for Signal Limitations in Current Conveyor Based Filters
|
| Principal Investigator (PI) |
: Oğuzhan Çiçekoğlu - cicekogl@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Description of the project: Current conveyor based analog filters are attracting
increasing attention due to their inherent wide bandwidth and greater linearity. They are
accepted to be alternatives to the well-known opamps. Many current conveyor based
analog filters are presented in the literature and still newer circuits are proposed. Due to
the advances in the technology toward low voltage low power systems signal limitation
problem is today more important than in the past. Decrease in the supply voltages reduce
the peak-to-peak voltage swing possibility whereas the noise floor remains nearly
constant. The dynamic range is reduced and this in turn reduces the signal processing
quality of the filters. |
|
Nonlinear Systems Analysis and Control Tool Kit
|
| Principal Investigator (PI) |
: Yağmur Denizhan - denizhan@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop a series of computer
programs that allow the simulation of nonlinear systems, accomplish some typical tasks
(like estimation of local dynamics, detection of equilibrium points and periodic orbits,
computation of Lyapunov exponents etc.) needed for the analysis of nonlinear systems
and allow the application of some typical nonlinear control methods. The resulting tool
kit will be used in graduate courses on analysis and control of nonlinear systems (like
SCO 591 and EE 591), as well as a simulation frame in MS and PhD theses on related
areas. |
|
Design and implementation of GSM blocking circuit
|
| Principal Investigator (PI) |
: Avni Morgül - morgul@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to design and realize an electronic circuit to jam and block the operation of GSM portable phones in classrooms, conference halls, theaters etc.. |
|
Automatic Speech Recognition of Turkish Broadcast News using Open Source Software
|
| Principal Investigator (PI) |
: Murat Saraçlar - murat.saraclar@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop an automatic speech
recognition system using open source software. The system will be trained and tested
using the Turkish Broadcast News corpus being collected at BUEE. The performance of
the system will be compared with our best system trained on the same corpus. |
|
Background wideband noise measurement and evaluation for UWB applications
|
| Principal Investigator (PI) |
: Mutlu Koca - mutlu.koca@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to measure and calculate long time fluctuations and average of the background noise of different frequency bands and different environments. |
|
EM Field measurement in primary schools which are very close to transmitters and GSM Base stations
|
| Principal Investigator (PI) |
: Avni Morgül - morgul@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to measure long time fluctuatins and average of the electromagnetic pollution at a number of primary schools located near the Base stations and TV transmitters. |
|
Spinning Display (Spindis)
|
| Principal Investigator (PI) |
: Şenol Mutlu - senol.mutlu@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to produce a flat display with a simple method. The method is to attach a small Light Emitting Diode (LED) display on a rotating plate. As the plate rotates, the LEDs are turned on and off in a calculated manner to display a TV quality image. According to the text and/or image information, a micro processor calculates which LEDs will be on and off as the display panel rotates with a constant angular velocity of w. The rotation is achieved with a motor. |
|
Smart House
|
| Principal Investigator (PI) |
: Levent Arslan - arslanle@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to build the electrical and software infrastructure for a smart house. Possible pieces may include a centrally controllable lighting system, microphone array design for voice recognition and speech synthesis to interact with the appliances, entertainment system which allows individual configurations in different rooms. |
|
A Simulation Platform for Robot Football
|
| Principal Investigator (PI) |
: Mehmet Akar - mehmet.akar@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop a software package that allows the simulation of two robot teams playing football against eachother. The simulator should allow modules for control, communication and vision information to be transmitted to and from the robots. |
|
Brain Computer Interface
|
| Principal Investigator (PI) |
: Bülent Sankur - bulent.sankur@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to develop electronic devices and/or signal processing tools for understanding the functioning of the brain during cognitive and emotional tasks. The first goal is “affective computing”, where the computer understands and track the state of the mind of the patient and where the patient may communicate some information to the computer. In addition, clinical problems, such as attention deficit patients or onset of Alzheimer’s disease can be investigated. The student can potentially pursue his/her d-research in MS and PhD theses. |
|
Coordinated Motion of 3D Particles – Robot Flocks & Protein Folding
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to study the motion of particles in 3-dimensional space with two applications in mind: motion planning of a flock of robots and protein folding. The student(s) will be participating in an ongoing MS project which has been studying the problem for some time and using/will be doing code development on a Java-based simulator designed and built with this purpose as well as a design on Webots -- a robot simulator environment. |
|
Robot Sensory Feedback
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project endow our second generation robot EDAR G2 with various sensory feedback capabilities – including limit switchs for the limitation of coordinate extensions, voltage level detection of the batteries and cameras for visual feedback. |
|
Acoustic Condition and Speaker Segmentation in Broadcast News
|
| Principal Investigator (PI) |
: Murat Saraçlar - murat.saraclar@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: The purpose of this project is to segment broadcast news programs. Ideally each segment should include a single speaker and be marked by the speaker identity. In addition each segment should have similar acoustic conditions (i.e channel, background, style). This will enable us to adapt our baseline speech recognition system to individual speakers/acoustic conditions. |
|
Automated Inspection and Sorting
|
| Principal Investigator (PI) |
: H. Işıl Bozma - bozma@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Thepurpose of this project to develop a real-time vision-based automated inspection system using color cameras and Janome robot. The visual data coming from cameras will be processed in order to either i) learn new objects or ii) recognize an object based on the already learned set of classes. |
|
Realization of a 200 Watt LLC Resonant Switch Mode Power Supply for LCD Television Sets.
|
| Principal Investigator (PI) |
: Ömer Cerid - cerid@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Description of the project: This power supply may be used by BEKO if successful.
The power supply will be composed of three sections:
a) Power factor correction (PFC)
b) LLC resonant main supply
c) Standy-by auxiliary flyback type supply |
|
8-bit Microcontroller Controlled Monochrome 10x56 Dot Matrix LED Display with Graphic Capabilities and RS-485 Multidrop Communication.
|
| Principal Investigator (PI) |
: Ömer Cerid - cerid@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Not available. Contact the PI. |
|
Microcontroller Controlled Chip Card Secure Door Entry System for BETA Laboratory.
|
| Principal Investigator (PI) |
: Ömer Cerid - cerid@boun.edu.tr |
| Semester |
: 2008-2009/1 |
| Description |
: Not available. Contact the PI. |
|