Print ISSN: 1813-0526

Online ISSN: 2220-1270

Main Subjects : Computer Engineering

Design of an Efficient Network Monitoring System Based on Agents

Ahmed Mohammed Basheer; Turkan Ahmed Khaleel

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 2, Pages 127-135
DOI: 10.33899/rengj.2020.126754.1020

In this paper, a network service monitoring system was proposed by relying on the agent for several reasons, including the possibility of providing effective control over the network, preventing penetration, reducing complications, ensuring the continuity of service on the network, permitting quality of service, reducing downtime and system cost. The proposed network management and monitoring system includes a set of tasks such as (monitoring the network service using a simple interface, the ability to add and delete new users, provide security, and the ability to distribute monitoring tasks to many agents and make adjustments independently without user intervention). The proposed monitoring system can be applied to the internet or local networks. The agent monitors and observes events on the network and collects information from all parts of the network and sends it to the server to convert it to a page that is designed to display this information in real-time to the administrator. Event monitoring information on the network is collected at the user's request or on a scheduling system created by the network manager and sent this information to the server to alert the manager when a fault occurs. By providing the ability to make some decisions without consulting the manager. This system has been designed to be general in all types of networks in the sense that it can be used in monitored and manage the network activated or passive, and it can be applied in the local networks and global networks.

Faults Diagnosis in Robot Systems: A Review

Muhamad Azhar A.Alobaidy; Dr. Jassim M. Abdul-Jabbar; Saad Zaghlul Al-khayyt

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 2, Pages 164-175
DOI: 10.33899/rengj.2020.127782.1051

Any robot system consists of mechanical and electrical components. . Mostly and with time obsolescence, faults and errors are happen in robot systems lead to work problems. Many years ago, scientist and researchers are working in this field. In this paper, a review study focuses on this field is introduced to make classifications between different types of faults and diagnosis methods those used in the field of robotics. Many types of faults are studied, according to some previous and recent works. The most detected faults can be classified into two parts: hardware and software faults. The hardware faults part is further classified into two main types; the first one is represented in sensors and actuators, while the other is included taking into consideration both position and velocity in joints. These joints which usually connect the links of the arm with each other and ensure contentions to motors, controllers, and many sensors, are really represent the most important side have to be studied. The software faults part includes those errors occurred during programming such as any error happen in signal translation, signal classification or signal identification is considered as a software fault.

Comprehensive Study and Evaluation of Commonly used Dimensionality Reduction Techniques in Biometrics Field

Shahad A. Sultan; M. F. Ghanim

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 2, Pages 152-163
DOI: 10.33899/rengj.2020.127581.1047

 In biometrics field, usually feature vectors have major length and contain ineffective information. This problem is so called “curse of dimensionality‟. Hence, there is a need for efficient dimensionality reduction technique to remove the redundant features and reduce the size of feature vectors to get high accuracy rate with fast performance. In this paper a comprehensive study of commonly used dimensionality reduction techniques: Principle Component Analysis, Linear Discremenant Analysis, and Generalized Discremenant Analysis, have been handled.  Theoretical background of these techniques is illustrated along with the methods used to calculate their projection spaces then; practical implementation is conducted to find out and adopt the best one for retina based biometric authentication system. From this extensive study, it has been concluded that PCA technique has a number of problems make it has a bad classification power. LDA technique has a number of problems make it impossible to implement in most cases of biometrics field, while GDA technique is more efficient than the PCA and LDA techniques for dimensionality reduction purpose. It has high classification power and consumes less computational time. Hence, GDA technique is adopted in the proposed authentication system.   

ESP32 Microcontroller Based Smart Power Meter System Design and Implementation

Issa Ahmed Abed; Hayder Yasir Naser

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 2, Pages 136-143
DOI: 10.33899/rengj.2020.127111.1038

Every house and workplaces should install electricity energy meter to evaluate the electricity consumption.  Finally of consistently, a large number of us get stressed over the high power bill and it is need to check the energy meter once in a while. In this work a smart electricity energy meter using ESP32 microcontroller which monitor energy through the PZEM-004T at any time and send to the office. Where this PZEM -004T is used for voltage and current measurements. Then the records will send to the office and store in the SQL database and also web page which is used specific IP. The results have been generated using MYSQL and the curves of the values with the time are also plotted using Microsoft Excel 2010. 

Weighting Signal Error Reduction

Abdelkader Faris Al Shalji; Dr. Fakhrulddin Hamid Ali

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 2, Pages 144-151
DOI: 10.33899/rengj.2020.127309.1043

The paper presents and discusses how to use some techniques to reduce the effect of error in the weighting signal which is produced from a load cell. The load cell is one of succeful sensors which is used to transform the weight to an electrical signal.  In industry the production of an accurate signal suffers from a problem of noisy environment. Different source of noise like electromagnetic fields from motors, machines, power lines and microwave in addition to humidity and tempreture variations have significant effects on weak electrical signals produced by load cells.Both hardware and software filtering are adopted to reduce the un wanted effects.

Design Analysis of Turbo Decoder Based on One MAP Decoder Using High Level Synthesis Tool

Amer T. Ali; Dhafir Abdul Fatah Alneema

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 70-77
DOI: 10.33899/rengj.2020.126801.1022

High Level Synthesis (HLS) tool does not only simplify the designing operation and rapid prototyping but also allows the designers to explore large number of design’s techniques such as parallelism, pipeline, memory partitioning and many other techniques. Turbo decoder based on Maximum APosterior Probability (MAP) algorithm is designed in this work using Vivado HLS. The normal turbo decoder with two MAP decoders were implemented with and without parallelism and proposed a new design of turbo decoder with one MAP decoder and it was designed with and without parallelism using different window technique in HLS tool which it is not explored previously. These designs were implemented for different frame size in this work. A comp-arison in latency and resource utilization where done and how a tradeoff done between these two parameters to reach the specific design that we need. The new design produces better results.

Design and Performance Evaluation of Lattice Daubechies Wavelet Filter Banks for Less Complex Cognitive Transceivers

Samar A. Yasser; Dr. Jassim M. Abdul-Jabbar; Qutaiba I. Ali

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 61-69
DOI: 10.33899/rengj.2020.126799.1021

Wavelet Packet Based Multicarrier Modulation (WPMCM) system uses usually a prototype filter bank multicarrier. The Daubechies-D10 filter bank (D10FB) is the basic framework of multicarrier modulation (MCM) transceiver system. In this paper, Lattice structures of exact Daubechies-D10 wavelet filter are adopted to design a prototybe filter bank realized for a proposed structure of WPMCM transceiver system. Magnitude and phase responses of the exact Daubechies-D10 LPF and the proposed structure are compared. They are nearly the same in the passband with improved roll-off characteristics of the magnitude response of the proposed. Whilefrom the results, it appears that the proposed WPMCM structure possess low speed of operation, less complexity and less power consumption.It is also noticed from SNR comparison, that the performance evaluation of the proposed WPMCM transceiver system is a moderate between other two previously issued structures.

Eichhornia and Ceratophyllum Monitoring System Based on IoT for Iraqi’s Irrigation projects

Nassr Myasar Abdullah; Rabee Hagem

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 78-84
DOI: 10.33899/rengj.2020.126877.1030

Advancments in technologies can help solve many problems. Internet of Things (IoT), a recent technology, can be employed to tackle the problems with irrigation systems in Iraq that suffer from agricultural pests. Such pests are known as emergence of bushes and weeds, such as (Eichhornia and Ceratophyllum), that spread in waterways, stream and river back, estuaries, irrigation channels, gates, and systems.They basically impedethe flow of water and affect the fucntion of pumps, gates and sprinklers, and can evencause them to stop working. Agricultural pests, in addition, consume huge amounts of water that Iraq critically needs, especially in the years of drought and lack of rain.The present study shows the deisgn of a system, for monitoring and controlling the agricultural pests, that uses IoT Wi-Fi Photon board with a GUI (Graphical User Interface) which is supported with an early notification system.The reasons for the growth of these pests and their spread are discussed in this study. Moreover, there are two methods suggested to limit the emergence of the Ceratophyllum plant and detect of the Eichhornia from an early stage. The results showed that the proposed system is feasible.

Design and Implementation of a Prototype Automatic Reading System for the Consumers’ Electrical Energy Meters

mohammed Samir Mohammed alsoufi; Dhafir A. Alneema

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 56-60
DOI: 10.33899/rengj.2020.126753.1019

The research aims to design and implement a prototype for an automated system that reads electrical energy meters for the consumers and collects these readings in a central unit via the World Wide Web (the Internet). This is done by adding a camera that automatically captures the meter reading of the electric meter as an alternative to the mobile meter reader. This meter reading image is processed and the value of the meter reading is extracted by using a Raspberry Pi device and the Python language depending on OCR (Optical Character Recognition) algorithm and then sent via Internet and collected from all consumers through the Internet cloud in a database in the Central Electricity Department. After collecting this information, it can be used to monitor electrical loads, record invoices, and give reports about loads and costs to consumers, and thus participate in rationalizing electrical energy consumption.

Voxelization Parallelism Using CUDA Architecture

Sura Nawfal Alrawy; Fakhrulddin Hamid Ali

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 1-11
DOI: 10.33899/rengj.2020.126643.1015

The voxelization process is an essential stage in three dimensional (3D) graphics pipeline. Its implementation should precede displaying objects in the pipeline. In this paper, different Voxelization algorithms are modified and parallelized to accelerate the operation of this stage. The 3D Digital Differential Analyzer (DDA) algorithm is used for line voxelization. This algorithm is utilized in triangle filling using the scan-line and the edge-function algorithms. The first one is designed to produce lines in parallel while the second can produce voxels. All these algorithms are parallelized using CUDA architecture and implemented on GPU processor. The actual implementation of these algorithms is examined and optimized according to the occupancy and block size metrics. The experimental results show that the acceleration amount of 3D DDA was about 4352x max compared to the OpenGL implementation, and the edge function implementation has been executed at a higher speed than the scan-line for object triangles voxelization.

A Prototype for Temperature Sensation System for Arm Amputee Handicap

Mohammad Tarik Mohammad; Basil Mahmood Shukr Agha

Al-Rafidain Engineering Journal (AREJ), 2020, Volume 25, Issue 1, Pages 12-16
DOI: 10.33899/rengj.2020.126537.1010

The upper limb disability experience includes both the loss of functional skills as well as a hand's sensation. Sensation ability, it’s very important to human experience and helps him to reach a good interaction with surrounding. Also, Feedback from robot arm is very important for understanding the protection for the robot arm and providing contact between human and arm. Research studies to regain sensation through many technics This paper proposed a heat sensation system, this system transfers the heat at the end of each robot arm finger to a specific position. The heating pad is used to generate similar temperature at fingers. System sensation was tested and evaluated to reach the desirable response. The results show the ability of the system to transfer temperature on a healthy position at handicapped.

Real-Time Voice Transmission over Wireless Sensor Network (VoWSN) based Automatic Speech Recognition (ASR) Technique

Ina`am Fathi; Qutaiba Ibrahim Ali; Jassim M. Abdul-Jabbar

Al-Rafidain Engineering Journal (AREJ), 2019, Volume 24, Issue 2, Pages 23-35
DOI: 10.33899/rengj.2020.126441.1005

In this paper an efficient Real-Time Voice over Wireless sensor network (VoWSN) platform based on Automatic Speech Recognition (ASR) system to be used in emergency scenarios is proposed, implemented and evaluated. The workflow principle of the proposed system is depending on a Category Transformation Protocol (CTP) that transforms system category gradually from network dependent ASR system with a full dictionary and language model (i.e. large vocabulary) to fully embedded ASR system with customized dictionary and language model (i.e. small vocabulary ). Moreover, a comparison study has been performed between our proposed VoWSN based ASR system and a VoWSN based streaming system. This comparison is performed to elaborate the gains achieved when sending the text of the voice signal instead of sending the voice signal. Additionally, the Voice over IoTs (VoIoTs) system has been evaluated utilizing Voice streaming or ASR system to evaluate the system performance when connecting to the Internet.