Person: KORKMAZ, HAYRİYE
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KORKMAZ
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HAYRİYE
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Publication Metadata only Poster: A Mobile Application for Voice and Remote Control of Programmable Instruments(SPRINGER INTERNATIONAL PUBLISHING AG, 2019) YAYLA, AYŞE; Ece, Burak; Yayla, Ayse; Korkmaz, Hayriye; Auer, ME; Langmann, RThe purpose of this work is to add a new feature to bench-type conventional instruments used in Electrical and Electronics Engineering Laboratory which do not have any voice recognition and wireless communication technology. By this way, the user can control these instruments/devices remotely with voice commands and also monitor the results/values in graphical or numerical/text format as well over a mobile device screen. The only limitation is that such instruments should have a driver supported by any software such as NI LabVIEW and a PC connectivity interface such as USB, GPIB or LXI (LAN extensions for Instrumentation). Controlling the instruments (such as oscilloscope or signal generators which are frequently used for training purposes and whose functions are manually set) over a mobile device with voice commands will make life easier for disabled students who especially have difficulties in using their hands.Publication Open Access Performance of Hyperparameters in Prediction with Deep Neural Networks of Electrical Properties of Nano-Coated Glasses Nano-Kaplamali Camlarin Elektriksel zelliklerinin Derin Sinir Aglari Ile Tahmininde Hiper Parametrelerin Performansi(2023-01-01) KORKMAZ, HAYRİYE; Yenginer H., Eraslan S., Gundogdu B., KORKMAZ H.Nano-coated glasses are widely used in different fields such as industry, transportation and architectural structures. After these glasses are obtained by various thin film coating applications, they are subjected to the heat treatment process (tempering, bending, etc.), which is considered as a secondary process. Both of these two-stage processes lead to changes in the electrical and mechanical properties of the final product. While electrical properties such as transmittance, coated surface reflection and uncoated surface reflection values obtained as a result of the first stage can be calculated by analytical methods; the chaotic nature of the second stage does not allow these parameters to be calculated with similar methods. Therefore, in this study, a multi-input-multi-output deep neural network structure was designed for the estimation of the electrical properties of the nano-coated glass type produced for commercial use in architectural fields. Moreover, The dataset with 64 different coating types was augmented by adding noise technique and the performances of the hyperparameters in prediction success were compared. The performance of the network structure was measured by the mean absolute error, mean squared error, and coefficient of determination metrics. The designed network structure was tested on 16 samples and according to the results obtained, it was observed that the best performance was achieved with the Adadelta learning algorithm and ReLU activation function on the augmented data set.Publication Metadata only A Remotely Accessible and Configurable Electronics Laboratory Implementation by Using LabVIEW(WILEY, 2010) KORKMAZ, HAYRİYE; Azaklar, Sezen; Korkmaz, HayriyeIn this article, selected applications from the experiments included in undergraduate Electronics and Computer Education curriculum are transformed into remotely accessible and configurable manner. The experiment user interfaces and publishing over the internet is developed in LabVIEW. These experiments are suitable for online conduction where students are either in-class or laboratory on-campus and/or at home. In this work, four different remotely configurable experiment modules are designed and implemented. Remotely configurable facility in a predefined range is performed by using switches activated by DO terminals of a data acquisition card through a web-based application. In this way, students can select the desired experiment from the ones stored on the PCB, adjust the voltage applied to the input terminal of the circuit and change the circuit elements values by using telepresence methodology. (C) 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 18: 709-720, 2010; View this article online at wileyonlinelibrary.com; DOI 10.1002/cae.20276Publication Open Access A novel monitoring dashboard and hardware implementation simplifying the remote access in industry(2023-07-18) KORKMAZ, HAYRİYE; Korkmaz H., Demir E.In today’s world where technology is developing with a great speed, it is getting harder day by day to adapt or include changes on new technology to the processes in facilities. Insisting on using conventional solutions adopted so far in industrial facilities cause problems to compensate the changing fast consumption needs of today. Adopting recent technologies improves the maintenance and troubleshooting processes of the facilities, accelerates the production and increases the quality of production. In this way, technology based smart systems can provide the devices or machines with the skills required for problem solving and system development in the industry. In this study, a remote monitoring and control application is proposed for a frequency inverter which is widely used and critical device for motor driving in industrial facilities is discussed and a novel internet of things (IoT) based communication gateway is developed. In this way, it is intended to improve the problem solving skills of field personnel by contributing with remote support.Publication Metadata only Real–time instrument control via internet by using labVIEW graphical development platform(2008-05-08) BAL, SEZEN; KORKMAZ, HAYRİYE; Bal S., Korkmaz H.In this work, a Remotely Accessible and Configurable Electronics Laboratory (RACEL) system is designed in LabVIEW graphical development platform. This LabVIEW application performs several tasks as follows: user interface design, publishing and sharing measured data, instrument control, and remote access to system in the campus lab. This paper describes how to control an instrument existing in the laboratory via a PC on-lab or on-line by using instrument drivers in LabVIEW. Readers can also find the information about where to find and how to download instrument drivers provided by NI or other vendors. In addition, how to turn any LabVIEW application into a remote application accessed via a Web browser without any additional development time is explained in detail. The instruments used in the work are a dc power supply and a data acquisition/ switch unit (multimeter) which are remotely controllable ones having a GPIB interface. Ensuring instrument control and publishing the front panel on the web, students are allowed to access and control the system variables such as adjusting dc power supply’s output to a desired value by clicking the knob or dragging the slider position up/down on the user interface seen on client PC’s monitor.Publication Metadata only Development of a remote laboratory for an electronic circuit design and analysis course with increased accessibility by using speech recognition technology(WILEY, 2021) SARIKAŞ, ALİ; Yayla, Ayse; Korkmaz, Hayriye; Buldu, Ali; Sarikas, AliWhen the curricula of engineering undergraduate programs are examined, it can be seen that experimentation plays a very important role and the learning outcomes of the courses are mostly dependent on practical abilities. However, there may be a few who cannot use their hands permanently or temporarily among the students who are attending these courses. Therefore, the participation of disabled students in this part of the course has always been a problem. In this paper, a remote laboratory application that aims to increase the accessibility of electronic circuit design and analysis courses by using speech recognition technology is introduced. This laboratory is designed for hands-free operation and enables students to analyze the electronic circuits by speaking. Google Web Speech API was used for speech recognition and the user interface was designed using Adobe Flash Professional. The parameters are sent to the ASP.NET page by using ActionScript 2.0 programming language. The application developed by using C# programming language enables programming the experimental hardware that includes a signal generator, a Raspberry Pi 2 with a camera, an oscilloscope, and a new test card. In the Raspberry Pi 2, Python programming language was used to select the desired experiment from those present on the board and to control digitally programmable circuit components such as digital potentiometers or parameters such as the DC reference voltage level. When the student successfully completes the predefined experimental procedures, an automatically generated e-mail is sent to the instructor including the student's username, log-in time, the oscilloscope screenshots, and ideal experimental results.Publication Open Access A Novel Monitoring Dashboard And Hardware Implementation Simplifying The Remote Access In Industry(2023-01-01) KORKMAZ, HAYRİYE; Demir E., KORKMAZ H.In today\"s world where technology is developing with a great speed, it is getting harder day by day to adapt or include changes on new technology to the processes in facilities. Insisting on using conventional solutions adopted so far in industrial facilities cause problems to compensate the changing fast consumption needs of today. Adopting recent technologies improves the maintenance and troubleshooting processes of the facilities, accelerates the production and increases the quality of production. In this way, technology based smart systems can provide the devices or machines with the skills required for problem solving and system development in the industry. In this study, a remote monitoring and control application is proposed for a frequency inverter which is widely used and critical device for motor driving in industrial facilities is discussed and a novel internet of things (IoT) based communication gateway is developed. In this way, it is intended to improve the problem solving skills of field personnel by contributing with remote support.Publication Metadata only A USB Kit for Digital I/O Applications in a Digital Electronics Lab Designed by Using PIC16C765 Microcontroller(WILEY, 2009) BULDU, ALİ; Buldu, Ali; Korkmaz, HayriyeIn this article, a USB Kit is designed by using Microchip's PIC16C765 microcontroller that has a low-speed USB serial interface engine. It is used to communicate with and/or through USB port for digital I/O applications in a Digital Electronics Lab In this education kit, two groups of keys (switches) and a group of LED are used to realize the experiments about logic gate applications included in Electronics and Computer Education Department's curriculum of Marmara University and also included in other faculties' curriculums related to the engineering science all around the world. In designed board, one of the key groups is 8-bit software-controlled by using simulator interface and the other is 8-bit user-controlled by using real switches existing on the board. (C) 2008 Wiley Periodicals, Inc. Comput Appl Eng Educ 17: 131-138. 2009: Published online in Wiley InterScience (www.interscience.wiley.com): DOI 10.1002/cae.20172Publication Metadata only Efficient Deployment of Wireless Sensor Nodes with Evolutionary Approaches(2022-01-01) KORKMAZ, HAYRİYE; Birtane Akar S., KORKMAZ H., Sahingoz O. K.© 2022 IEEE.In previous WSN studies, it was observed that there are two common methods used in coverage area calculation: 1) image processing technique or 2) mathematical formulas. calculation of the coverage area, if the sensing ranges of the mobile nodes intersect (overlap) each other, the processing time increases while the calculation result is wrong. In this study, a new method is proposed to calculate the coverage area with relatively high accuracy, including the overlap conditions, but in a shorter time. In this method, the points that were placed as targets to be tracked in the Region of Interest (ROI) in the previous studies are now used in a different way. All covered points by any node are counted to calculate the area. However, in this case, the number of points placed in the area should be much higher than in the previous cases. Coverage performance is calculated by counting the points covered by the WSN nodes and dividing them by the total number of points defined initially. (Coverage rate) First of all, to decide the experiment\"s initial conditions, 57 different cases were simulated. Different number of sensor nodes with different radii (25, 50, 100, 200) was considered and then the average of the error rate of all cases was calculated. The lowest error value was obtained in the case of the 2000×2000 area. Therefore, an area of 2000×2000 was preferred in the next steps. It can be concluded that, this method is a promising method to calculate the coverage rate in WSNs.Publication Open Access Hareketli hedef takip sisteminde genelleştirilmiş Hough dönüşümü (GHT) ve normalleştirilmiş çapraz ilinti (NCC) yöntemlerini ardışıl kullanarak eşleşme doğruluğunun arttırılması(2018-02-01) KORKMAZ, HAYRİYE; MUSTAFA YAĞIMLI;HAYRİYE KORKMAZ;M Oğuzhan ÜNBu çalışmada; hedefin daha iyi tahmin edilmesinde, hedefin ve şablon piksellerinin yoğunlukları arasında ilinti puanı hesaplanmıştır. Görünüm değişikliklerini ele almak için yapılan işlemde, hedefin şablonları 12 değişik görünüşten alınmıştır. Resmin merkez noktası ile sınırlayıcı kutunun merkez noktası arasındaki mesafe hesaplanmış ve bir hata sinyali olarak dönüştürülmüştür. Hata sinyalini kullanarak servo motorlar hedefin merkezileştirilmesi için kameranın görüş açısını değiştirmeye yönlendirilmiştir. Böylece hedef, değişen bir geçmişe sahip gerçek zamanlı olarak tanınmış ve izlenmiştir.