Ahmet Turan Ozdemir

Ahmet Turan Ozdemir
Erciyes Üniversitesi · Department of Electrical and Electronics Engineering

PhD

About

41
Publications
16,819
Reads
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593
Citations
Introduction
Ahmet Turan Ozdemir currently works at the Department of Electrical and Electronics Engineering, Erciyes Üniversitesi. Ahmet does research in Electronic Engineering, Artificial Neural Network and Artificial Intelligence. Their most recent publication is 'A Remote Tone Burst Pulser Design for Automated Ultrasonic Scanning Systems'.

Publications

Publications (41)
Article
With sensor-based wearable technologies, high precision monitoring and recognition of human physical activities in real time is becoming more critical to support the daily living requirements of the elderly. The use of sensor technologies, including accelerometers (A), gyroscopes (G), and magnetometers (M) is mostly encountered in work focused on a...
Article
Human activity recognition (HAR) has become a popular field to recognize people's activities from signals obtained using various types of body placed sensors. The increase in the elderly population will increase cognitive and physical decline due to aging and may cause to serious injuries and deaths if immediate assistance is not provided. For this...
Article
Optical fiber based scintillation detector performance is critical to determine life of detector and accuracy of measurements. To do this, very hard experimental works is required. Alternatively, there are much easier computer-based decision method including artificial intelligence (AI) algorithms. The use of AI based automatic detector performance...
Article
The usage areas of textile materials are expanding day by day and provide different comfort features to the user. In this study, it was focused on designing a fabric with heating feature. By the help of printing particle-free silver inks on textiles, a low-voltage and light-weight fabric- heater was produced in wearable form using a low-cost fabric...
Article
All-solution processable fabrication of high performance transparent conductive electrodes is vital for next-generation optoelectronics applications. In this study, rapid and versatile fabrication of high-performance transparent electrodes by synergetic integration of electrospun nanofibers and particle-free reactive silver inks is reported. Direct...
Article
Full-text available
With the ongoing development of global navigation satellite system (GNSS) technologies, user's dependence on these technologies has drastically risen. Ranging anywhere from industrial applications to agriculture or geodetic applications, the growing demand has stimulated the need for more sophisticated equipment with seamless accuracy. However, the...
Article
Multipath is a dominant error source in Real-Time Kinematic (RTK) applications that reduces the position, time and velocity accuracy. Mitigation of such errors can be achieved by better signal processing and antenna design. This paper attempts to examine the different height of RTK system antenna with regards to the multipath error. The results obt...
Article
Full-text available
There are several destructive and nondestructive methods for quality evaluation of agricultural products. Most of the employed traditional techniques are time-consuming and involve considerable degree of manual works. Destructive methods provide reasonable success rate of quality determination of fruits; however, they practically have many concerns...
Article
Full-text available
The ability to pattern highly conductive features on paper substrates is critically important for applications in radio frequency identification (RFID) tags, displays, sensors, printed electronics, and diagnostics. Ink-jet printing particle-free reactive silver inks is an additive, material efficient and versatile strategy for fabrication of highly...
Preprint
Full-text available
This study aims to develop a wearable device that collect health data from maintenance personnel and environmental conditions data in order to ensure the safety of the staff in industrial work areas where have different levels of risk categories. This device can stop machine immediately according to the health parameters that collected from the mai...
Article
Full-text available
The effect of temperature on the calendar aging of commercially available 3.25 Ah Lithium-Ion (Li-Ion) and 2.30 Ah Nickel Metal Hydride (Ni-MH) batteries were investigated. Calendar life tests were carried out using open circuit method at -20°C, 20°C and 55°C temperatures and initial state of charge (100% SOC). It is found that the aging of the bat...
Conference Paper
Full-text available
Bu çalışma, endüstriyel iş sahalarında farklı risk kategorisine sahip çalışma bölgelerinde istihdam edilen bakım personelinin güvenliklerini sağlamak amacıyla, ilgili çalışan ve çevre şartları hakkında bilgi toplayan bir giyilebilir cihazın geliştirilmesini amaçlamaktadır. Bu cihaz, iş kazalarını önlemek için bakım personelinden toplanan sağlık par...
Conference Paper
Full-text available
Quality evaluation of agricultural products is most commonly conducted using destructive methods. Ripeness and maturity of fruits are determined by measuring internal and external characteristic of fruits. Destructive method enables to measure texture, color, sugar content etc. Destructive methods increase success rate of quality determination of f...
Conference Paper
Full-text available
The aim of this paper is to investigate feature extraction and fusion of information across a number of sensors in different spatial locations to classify temporal events. Although the common feature-level fusion allows capturing spatial dependencies across sensors, the significant increase of feature vector dimensionality does not allow learning t...
Article
Full-text available
In this work, a programmable remote ultrasonic tone burst pulser circuit design and implementation for Automated Water Squirting Ultrasonic Scanning Systems (AWSUSS) are presented. This pulser can be configured by a PC over RS422 communication interface thus parameters such as pulse frequency, pulse repetition frequency (PRF), number of pulses in a...
Poster
Full-text available
In this study, it is aimed to develop a wearable device, mounted on wrist or arm, that collects information of service staff (operator or maintenance personnel) related to vital health conditions. This device is able to stop the machine urgently according to health parameters in order to prevent work accidents. The system consists of two parts; one...
Conference Paper
Full-text available
The aim of this work is to design an ultrasonic non-destructive testing (NDT) system that utilizes the advanced features of smartphones and tablets. These superior features of smart devices can be listed as wide and sensitive touch screen, mobile internet connection, satisfactory CPU performance, application development environment and more. Integr...
Conference Paper
Full-text available
Fall detection is typically based on temporal and spectral analysis of multi-dimensional signals acquired from wearable sensors such as tri-axial accelerometers and gyroscopes which are attached at several parts of the human body. Our aim is to investigate the location where such wearable sensors should be placed in order to optimize the discrimina...
Conference Paper
Full-text available
zet Sahada çoğunlukla askeri unsurlar tarafından kullanılan bataryaların sağlığı, oldukça önemlidir. Çünkü çatışma alanında batarya, en önemli ihtiyaçtır. Bu nedenle bataryaların ihtiyaç duyulduğunda sorunsuz bir şekilde kullanılabilmesi için uygun depo koşullarının sağlanması gerekmektedir. Bataryaların sağlıkları ve ömürlerine etki eden iki öneml...
Article
Full-text available
Wearable devices for fall detection have received attention in academia and industry, because falls are very dangerous, especially for elderly people, and if immediate aid is not provided, it may result in death. However, some predictive devices are not easily worn by elderly people. In this work, a huge dataset, including 2520 tests, is employed t...
Article
Many researchers work on human motion detection and recognition systems and have been trying to use these systems in order to solve problems in health services. Falls as one of the major health problems are especially seen more frequently among elderly people and reduce the quality of life dramatically with causing serious damages. Therefore, immed...
Data
https://archive.ics.uci.edu/ml/datasets/Simulated+Falls+and+Daily+Living+Activities+Data+Set
Article
Full-text available
Falls are a serious public health problem and possibly life threatening for people in fall risk groups. We develop an automated fall detection system with wearable motion sensor units fitted to the subjects' body at six different positions. Each unit comprises three tri-axial devices (accelerometer, gyroscope, and magnetometer/compass). Fourteen vo...
Article
Non-Destructive Evaluation (NDE) is a non-invasive testing technique used for determining the integrity of materials or for quantitatively measuring their desired characteristics without damaging them. Moreover NDE techniques can be used to detect deformed areas, cracks, porosity and leaks, to characterize structures, measure dimensions and determi...
Article
Recognition of cardiac arrhythmias by electrocardiogram (ECG) is an important issue for diagnosis of cardiac abnormalities. Many studies on recognition of cardiac arrhythmias by ECG, using various techniques, have been performed in the past 20 years. Artificial neural networks (ANNs) are the most widely used tool in medical diagnosis systems (MDS)...
Thesis
Full-text available
Cardio Vascular Disease (CVD) is one of the major causes of disability in adults as well as the main causes of death in both developed and undeveloped countries, and claiming 17.1 million lives a year according to the World Health Organization (WHO). CVD is the consequence of cardiac arrest and primarily caused by electrical abnormalities of the he...
Conference Paper
Processing of ECG (Electro CardioGram) records by software- based systems was started in the beginning of the 1960s. Many studies on different techniques about this topic have been made in the last 20 years. ANN (Artificial Neural Network) is the tool that is mostly used in medical diagnosis systems because of the belief in its powerful prediction...
Conference Paper
Underwater acoustic (UWA) multi-user network algorithms can only be fully tested through experimental studies where communication signals are transmitted through a real underwater channel. Reconfigurable UWA modem provides a flexible environment for the testing of different communication algorithms including networking protocols. In this paper we p...
Article
Full-text available
1. Giriş: ElektroManyetik Uyumlulukta (EMC, ElectroMagnetic Compatibility) iki ana grup esastır. Bunlar elektromanyetik gürültü neşri (emission) ve elektromanyetik gürültüye karşı bağışıklıktır (immunity). Yani EMC, bir cihazın üretebileceği elektromanyetik gürültünün ve doğruluğu bozulmadan çalışması gereken ortam elektromanyetik gürültüsünün sını...
Article
Full-text available
In this work, a MCU (MicroController Unit) with a combinational logic circuit design are implemented on an FPGA (Field Programmable Gate Array) chip. VHDL (Very high speed integrated circuit Hardware Description Language) code can be concurrent (parallel) or sequential. Concurrent code is also called dataflow code. For that reason, VHDL is usually...
Article
Full-text available
In this paper GPRS based Automated Meter Reading (AMR) system is proposed for following the electricity energy at a wide range. Many utilities lose millions of dollars each year through "unaccounted for consumption", often called transmission and distribution losses and dismissed as a technical problem. These losses come from illegal connections, m...

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