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Article
Wireless Sensor Network for Medical Applications

Authors: Hanady S.Ahmed --- Abduladhem Abdulkareem Ali
Journal: Iraqi Journal for Electrical And Electronic Engineering المجلة العراقية للهندسة الكهربائية والالكترونية ISSN: 18145892 Year: 2015 Volume: 11 Issue: 1 Pages: 49-59
Publisher: Basrah University جامعة البصرة

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Abstract

This work presents a healthcare monitoring system that can be used in an intensive care room. Biologicalinformation represented by ECG signals is achieved by ECG acquisition part . AD620 Instrumentation Amplifierselected due to its low current noise. The ECG signals of patients in the intensive care room are measured throughwireless nodes. A base node is connected to the nursing room computer via a USB port , and is programmed with aspecific firmware. The ECG signals are transferred wirelessly to the base node using nRF24L01+ wireless module.So, the nurse staff has a real time information for each patient available in the intensive care room. A starWireless Sensor Network is designed for collecting ECG signals . ATmega328 MCU in the Arduino Uno boardused for this purpose. Internet for things used For transferring ECG signals to the remote doctor, a Virtual PrivetNetwork is established to connect the nursing room computer and the doctor computer . So, the patientsinformation kept secure. Although the constructed network is tested for ECG monitoring, but it can be used tomonitor any other signals.


Article
An Optimized Complementary Filter For An Inertial Measurement Unit Contain MPU6050 Sensor

Authors: Ahmed Fahem Albaghdadi --- Abduladhem Abdulkareem Ali
Journal: Iraqi Journal for Electrical And Electronic Engineering المجلة العراقية للهندسة الكهربائية والالكترونية ISSN: 18145892 Year: 2019 Volume: 15 Issue: 2 Pages: 71-77
Publisher: Basrah University جامعة البصرة

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Abstract

(It can be said that the system of sensing the tilt angle and speed of a multi-rotor copter come in the first rank among all the other sensors on the multi-rotor copters and all other planes due to its important roles for stabilization. The MPU6050 sensor is one of the most popular sensors in this field. It has an embedded 3-axis accelerometer and a 3-axis gyroscope. It is a simple sensor in dealing with it and extracting accurate data. Everything changes when this sensor is placed on the plane. It becomes very complicated to deal with it due to vibration of the motors on the multirotor copter. In this study, two main problems were diagnosed was solved that appear in most sensors when they are applied to a high-frequency vibrating environment. The first problem is how to get a precise angle of the sensor despite the presence of vibration. The second problem is how to overcome the errors that appear when the multirotor copter revolves around its vertical axis during the tilting in either direction x or y or both. The first problem was solved in two steps. The first step involves mixing data of the gyroscope sensor with the data of auxetometer sensor by a mathematical equation based on optimized complementary filter using gray wolf optimization algorithm GWO. The second step involves designing a suitable FIR filter for data. The second problem was solved by finding a non-linear mathematical relationship between the angles of the copter in both X and Y directions, and the rotation around the vertical axis of multirotor copter frame.


Article
Power Transformer Protection by Using Fuzzy Logic

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Abstract

Power transformer protective relay should block the tripping during magnetizing inrush and rapidlyoperate the tripping during internal faults. Recently, the frequency environment of power system has beenmade more complicated and the quantity of 2nd frequency component in inrush state has been decreasedbecause of the improvement of core steel. And then, traditional approaches will likely be maloperated inthe case of magnetizing inrush with low second harmonic component and internal faults with high secondharmonic component. This paper proposes a new relaying algorithm to enhance the fault detectionsensitivities of conventional techniques by using a fuzzy logic approach. The proposed fuzzy-basedrelaying algorithm consists of flux-differential current derivative curve, harmonic restraint, andpercentage differential characteristic curve. The proposed relaying was tested with MATLAB simulationsoftware and showed a fast and accurate trip operation.

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