Bayındır, Süha

Scholarly Output Search Results

Now showing 1 - 3 of 3

Citation - WoS: 2
Citation - Scopus: 2
Preventing Anterior Translation of the Human Knee Joint by Contracting the Biceps Femoris Muscle Using an Accelerometer and an Electrical Muscle Stimulator Device
(IEEE, 2019) Oztekin, Haluk Hayri; Bayındır, Süha; Güner, Aytuğ
This paper presents the design, implementation and the test results of a Prophylactic Anti-Translational Electronic Knee Brace which detects the abnormal anterior translation of the tibial bone in the knee joint caused by an anterior cruciate ligament rupture. With the help of a three axes wireless acceleration sensor, the agonist biceps femoris muscle is contracted in real time, using a microcontroller based electrical muscle stimulator (EMS), at the instant when the acceleration of the tibia exceeds a limit value. The waveforms of the modulus of the three axes acceleration components and the EMS pulses applied to the right and left knees of a healthy subject, during the extension and flexion tests on the knee joint are presented simultaneously and discussed. It was observed that, the EMS pulses are generated with a delay of 40 msec and contracted the biceps femoris muscle successfully, at the instant when the acceleration limit is exceeded.
Pulse Transit Time Based Blood Pressure Estimation in Labview Environment Using Non-Contact Ecg Electrodes and Pulse Sensor
(Institute of Electrical and Electronics Engineers Inc., 2019) Guner A.; Kilickaya S.; Bayindir N.S.
Sphygmomanometers are conventionally used for measuring blood pressure, namely systolic and diastolic pressures. While measuring the maximum output pressure of the heart, namely systolic, the blood flow is cut with the pressure exerted by the cuff, which may discomfort the patient. To avoid this discomfort, we propose a contactless and cuffless blood pressure measurement system (CBPS) of estimating the blood pressure using non-contact capacitively coupled ECG electrodes and a commercial pulse sensor together with an analog signal acquisition circuitry and a LabVIEW program which calculates the systolic and diastolic pressures from the pulse transit time (PTT). Moreover, non-contact ECG electrodes do not need conductive gel, and the CBPS provides almost instant BP results. These features of the CBPS enable continuous recording of the blood pressure together with the ECG signals in a holter device utilizing contactless electrodes. © 2019 Chamber of Turkish Electrical Engineers.
Design and Implementation of Noise Filters in Position and Orientation Estimation of Autonomous Agricultural Vehicles
(İzmir Ekonomi Üniversitesi, 2022) Güner, Aytuğ; Bayındır, Nuri Suha
Otonom bir tarım aracı, IMU, tekerlek kilometre sayacı, manyetometre ve lazer sensörü gibi uygun maliyetli sensörler kullanılarak tasarlanmıstır. Bu projenin temel amacı, otonom tarım aracını, bir meyve bahçesindeki ağaçların arasında, şeridin sonunda bir işaret levhası algılayana kadar düz bir yol üzerinde hareket ettirmektir. Bu nedenle, aracın tam konumunu tahmin etmeye çalışmak yerine, şeridin ekseni boyunca aracın yönünü tahmin etmeye odaklandık. Daha doğru yön bilgisi elde etmek için ivmeölçer, jiroskop, manyetometre ve tekerlek kilometre sayacının avantaj ve dezavantajları tamamlayıcı, Madgwick, Kalman ve entegre kalman filtresi gibi filtreler uygulanarak birleştirilmis¸ ve filtrelerin farklı çevre koşullarındaki doğrulukları, ortalama hata bulunarak karşılaştırılmıştır. Filtrelerden elde edilen yön bilgisini kullanarak, otonom tarım aracı bir meyve bahçesinde düz bir yolda hareket ettirilmiştir. Ayrıca, otonom tarım aracını ağaçlar arasında düz bir yolda hareket ettirmek için bir lazer mesafe sensörü kullanılarak farklı bir yaklaşım türü geliştirildi. Lazer mesafe sensörü kullanılarak otonom tarım aracı ile ağaçlar arasındaki mesafe ve açı belirlendi¸ ve ağaçları referans alarak ağaçların arasında düz bir yol üzerinde aracın hareketi sağlanmıştır. Otonom araç üzerinde ROS platformu ve python betiği kullanılarak çeşitli filtreler geliştirilip uygulanmakta ve bu filtrelerin performansı MATLAB üzerinde incelenmektedir.

Journal	Count
2019 Medıcal Technologıes Congress (Tıptekno)	1
ELECO 2019 - 11th International Conference on Electrical and Electronics Engineering	1

Bayındır, Süha

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