Yazar "Şanver, Ufuk" seçeneğine göre listele

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    An autonomous marine mucilage monitoring system
    (MDPI, 2023) Şanver, Ufuk; Yeşildirek, Aydın
    Mucilage bloom is a current issue, especially for countries in the Mediterranean Basin, due to economic activities and ecological effects. The main causes are increased nutrient load due to organic and industrial pollution in the sea, global warming, and meteorological conditions at a level that can trigger mucilage bloom. It is important to take permanent measures to combat the increased nutrient load causing mucilage. However, there are various actions that can be performed during the mucilage bloom period, especially the collection of mucilage on the sea surface. Surface vehicles can be used to monitor and collect mucilage on the sea surface. The aim of this study is to design an autonomous marine mucilage monitoring system for systems such as unmanned surface vehicles (USV). We suggest monitoring the risky Marmara Sea continuously and recording some of the key parameters using a USV. The onboard solution proposed in this study has an architect based on a three-tier mucilage monitoring system. In the first tier, the sea surface is scanned with camera(s) in a certain radius in real time. When mucilage-candidate areas are determined, the vehicle is directed to this region autonomously. In the second tier, seawater in the region is measured in real time with some onboard sensors, pH level, conductivity, and dissolved oxygen level. The third tier is where real samples at three different depths are collected (if possible) for detailed posterior lab analysis. We have compared image processing, CNN (ResNet50), kNN, SVM, and FFNN approaches and have shown that the accuracy of our proposed mucilage classification method offers better and more promising performance.
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    Characteristics of building thermal insulation
    (Institute of Electrical and Electronics Engineers Inc., 2018) Eyüpoğlu, Şeyda; Şanver, Ufuk
    In daily life, thermal insulation has become obligatory in all building to minimize energy consumption. The use of thermal insulation in buildings causes to reduce not only using air-condition systems but also energy cost. In order to decrease in lost heat of the buildings, researchers have investigated new materials which are economic, renewable and procurable. The aim of this paper is to prepare an overview of the principle of thermal insulation. Furthermore, the most commonly used thermal insulation materials were investigated. © 2018 IEEE.
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    Design and implementation of a programmable logic controller using PIC18F4580
    (Institute of Electrical and Electronics Engineers Inc., 2018) Şanver, Ufuk; Yavuz, Erdem; Eyüpoğlu, Can; Uzun, Tuncay
    Use of electricity in industry opened a new age which is dominated by industrial automation. In the beginning, automation systems were based on electro-mechanical systems consisting of relays and contactors. Developments in semiconductor technology inevitably transformed the existing structure and cause electronic-controlled Programmable Logic Controller (PLC) to prevail in the automation systems. PLCs consist of a microcontroller/microprocessor, relay or transistor for switching, isolating equipment such as opto-couplers and voltage converter/inverters. Industrial PLCs are quite expensive devices. In this study, design and implementation of a low-cost PLC using PIC18F4580 microcontroller are realized. Special software including a graphical user-interface is developed for programming the PLC and transferring code data to the device. Both ladder diagram and word instructions can be used for programming the PLC. © 2018 IEEE.
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    An electronic control unit for thermoelectric cooling
    (Institute of Electrical and Electronics Engineers Inc., 2019) Şanver, Ufuk; Yavuz, Erdem; Eyüpoğlu, Can
    Due to their efficient operation in small volumes, Thermoelectric Coolers (TECs) have a wide usage in cooling applications, and are preferable wherever usage of compressor-based cooling systems is hard. In this study, a control unit for thermoelectric cooling modules has been designed and implemented based on a microcontroller. The designed system allows users to specify the threshold values for thermoelectric coolers to operate on. The microcontroller drives the TEC using a pulse width modulation (PWM) technique via a MOSFET as a switching component. Adopting a PWM-based control technique makes it possible to manage the speed and energy consumption of the TEC system. © 2019 IEEE
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    An ensemble of neural networks for breast cancer diagnosis
    (Institute of Electrical and Electronics Engineers Inc., 2017) Yavuz, Erdem; Eyüpoğlu, Can; Şanver, Ufuk; Yazıcı, Rıfat
    Since breast cancer is a common disease in society all over the world, early diagnosis is of vital importance in order to treat patients before it reaches an irreversible phase. Expert systems are being developed to make it easier to diagnose the disease. In this study, an ensemble of neural networks named radial basis function network (RBFN), generalized regression neural network (GRNN) and feed forward neural network (FFNN) is implemented to separate breast cancer data samples into benign/malignant classes. The utilities of these common methods and the proposed hybrid model which is a combination of these methods are explored and their performances are comparatively presented. The experimental results on Wisconsin Diagnostic Breast Cancer (WDBC) dataset have proven that the proposed method presents a promise for diagnosis of breast cancer. The proposed model can be used as a tool to assist medical specialists in making their decision on the disease. © 2017 IEEE.
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    Identification of train wagon numbers
    (IEEE Computer Society, 2014) Şanver, Ufuk
    In this work, we aimed to find and prepare to identify image parts, which include train wagon numbers. First, keypoints of wagon numbers are found. After that, the "candidate image", about which we do not have any information, and the "reference image" are matched. The keypoints are found by the Scale Invariant Feauture Transform (SIFT) method of David G. Lowe. If enough keypoints are matched, than the area is controlled, where the information can be located. As a result of comparison, if there exists any matching areas, we check whether that area contains wagon number with 12 digits or not. After that, the part of selected area of image is prepared for identification utilizing image processing methods. © 2014 IEEE.
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    An image processing application to detect faulty bottle packaging
    (Institute of Electrical and Electronics Engineers Inc., 2017) Şanver, Ufuk; Yavuz, Erdem; Eyüpoğlu, Can
    Use of automation technologies has received significant attention in recent years and has become one of the crucial parts of industry. The inspection of outputs in a production process is of great importance for companies to produce faultless products. This is vital for companies to sustain credibility and reliability as well. In this study, it is aimed to detect faulty packaging of bottles. Mineral water is bottled in factories and packaged to produce six-bottle and twenty-bottle packs transported on a conveyor belt. Faulty packaged products are rarely observed in this production process. However, it is not acceptable for these faulty products to leave the production line. In this work, an image processing application is implemented to detect and label faulty bottle packages for impeccable production. Sobel filter is utilized for edge detection and Hough transform is used for calculation of number of bottles in packages. The ones labelled as faulty packages are eliminated from conveyor belt by means of a boxer motor. © 2017 IEEE.
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    Modelling and implementation of an automatic table-tennis scoreboarding system
    (Institute of Electrical and Electronics Engineers Inc., 2016) Şanver, Ufuk; Yavuz, Erdem; Kasapbaşı, Mustafa Cem; Yazıcı, Rıfat
    Increasing incomes and awards of games leads to better manage games for referees to prevent decision errors. Besides investments made by authorities to better train referees, it is becoming more and more necessary to automatize the game arbitration processes. For amateur games with no referee, there is also a need for an automation system to replace the referee. One of the popular games is table tennis played both at amateur and professional levels. In this study, a table-tennis automatic scoreboarding system is designed and implemented. The designed automation system uses a computer which receives the necessary signals from vibration sensors, makes right decisions according to the rules and controls the peripheral devices such as displays and speakers. This system assists referees to make better decisions in professional games and performs missions of referees in amateur games. © 2016 IEEE.
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    Real time remote control of robotic hand system - TeleTouch
    (ICENTE, 2017) Ünal, Musa Sadık; Ertürk, Ersin; Kasapbaşı, Mustafa Cem; Yavuz, Erdem; Şanver, Ufuk
    Robots offer an efficient way as assistive devices to perform many errands. In this study, it is aimed to present a proof-of-concept robotic system that is called TeleTouch. s motions/gestures to be transferred in a desired remote location within an acceptable delay. In the implementation, Leap motion sensor, RaspberryPi, and Arduino kits are used. Hand model that is manufactured by 3D printers is actuated by Arduino system which drives the servo motors connected to the hand model. RaspberryPi is used not only for transferring camera view of the hand model to the controlling remote system but also for transferring fingers attributes to the Arduino system. A special software is developed in .Net platform fingers from leap motion sensor. Delay times of the local and remote system are investigated and it is understood that proposed system successfully transfer motion in almost real time.
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    Use of fibrous materials in acoustic insulation applications
    (Institute of Electrical and Electronics Engineers Inc., 2017) Eyüpoğlu, Şeyda; Şanver, Ufuk; Eyüpoğlu, Can
    In daily life, human beings are exposed to disturbing environmental effects. Sound pollution is one of the most disturbing environmental effects for human. In recent years, researchers have evidenced that sound pollution affects human psychology and health negatively. In order to avoid negative effects of sound pollution, a variety of materials providing acoustic insulation are produced commercially. Furthermore, acoustic insulation properties of new materials have been investigated. Use of fibrous materials in acoustic insulation applications has been researched since fibrous materials are economic, light and they have high physical properties. In addition, porous structure of fibrous materials is an advantage to use these materials in acoustic insulation applications. © 2017 IEEE.