Yazar "Darshi, S." seçeneğine göre listele

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    Conceptual Design of Wireless Smart Grid for the Optimization of Electric Transmission in Iraq
    (Institute of Electrical and Electronics Engineers Inc., 2023) Abbas, A.B.; Almohammedi, A.A.; Balfaqih, M.; Darshi, S.
    Rapid development of technology has resulted in a considerable increase in electricity consumption, which has created a barrier not only because of the generation but also in delivery. Thus, when demand increases, the complexity of the electrical network increases as a result of the increased need for improved dependability, efficiency, protection, energy, and environmental sustainability. According to the world bank statistics, Iraq's loss was 51% during distribution, and it is considered significantly high. This study proposes a wireless network-based design for detecting and optimizing Iraq's electricity distribution infrastructure. Moreover, the suggested module is composed of several data gathering methods that are required for the various paths of the power distribution systems. This design offers viable support for a variety of issues confronting Iraq's power distribution systems, including variable voltage levels caused by fluctuating electrical usage, power burglary, manual invoicing, and transmission line breakdowns. The suggested design is intended for use with single-phase power transmission systems; however, it may be adapted for use with three-phase power distribution systems with slight improvements. The introduction of this method will result in significant energy savings, allowing for the availability of electricity to a greater number of users than previously possible in a crowded place. The suggested smart grid design, which was created for the Iraq context, permits real-time control of energy consumption, optimal electricity consumption, minimal loss, diagnosis of power failures, breakdowns, and automatic invoicing. © 2023 IEEE.
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    High Gain and Efficiency Triple U-shaped Slots Microstrip Patch Antenna for 5G Applications
    (Institute of Electrical and Electronics Engineers Inc., 2023) Almohammedi, A.A.; Raad, A.; Darshi, S.; Shepelev, V.; Mohd, Yusof, M.H.; Balfaqih, M.
    The 28 GHz band is a frequency band that has been allocated for use in 5G mobile communication networks. It is part of the millimeter wave spectrum, which is a range of frequencies between 30 GHz and 300 GHz. This study proposes and investigates the 28 GHz 5G networks. A modified single element patch antenna with three grooved U-shaped holes is shown and is used to indicate a high gain and Efficiency for 28 GHz 5G antenna. The proposed antenna consists of the radiation element on a RTRogers 5880 laminate and is actuated by a microstrip feedline. The proposed work includes the most desirable characteristics, such as small size, light weight, low-cost fabrication and wide operation up to 1.4 GHz (27.1 - 28.5 GHz). The proposed antenna design also offers a high efficiency up to 89.73 %, high gain up to 8.14 dBi, and return loss up to -30 dB, resulting in attractive performance. The results obtained show that the antenna is a viable candidate for 5G applications at 28 GHz. © 2023 IEEE.
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    Mobility-based Enhancement for Channel Coordination of IEEE 802.11p on Vehicular Ad-hoc Networks Over V2I
    (Institute of Electrical and Electronics Engineers Inc., 2021) Al-Shaibany, S.; Almohammedi, A.A.; Shepelev, V.; Darshi, S.; Al-Hemyari, A.; Alsharaby, A.A.A.; Abdullah, A.M.M.
    Vehicular Ad-Hoc Networks (VANETs) are a sub form of Mobile Ad-Hoc Network that provide communication among vehicles (V2V) and vehicles to infrastructure (V2I). VANETs have been developed to offer reliable and efficient services on the roads. These services include safety applications (collision warning), and non-safety applications (video and voice). The IEEE 802.11p is an extension of the IEEE 802.11 standard to support wireless access into vehicular environments. However, the IEEE 802.11p standard does not perform well for VANETs under high traffic load and mobility. The is owing to the nature of contention-based channel access mechanism in IEEE 802.11p sharing a common radio frequency. The work in this paper presents a new scheme to improve the channel access coordination of 802.11p for V2I communication under high traffic and mobility. This scheme adaptively adjusts the contention window (CW) based on the times (deadlines) that the vehicles are about to exit the RoadSide Unit (RSU) coverage area. Priority service is given to vehicles with shorter deadlines and vice versa. The Network Simulator (NS-2) v.2.35 is used for simulation. According to simulation results, our proposed scheme outperforms the existing scheme in terms of throughput, packet loss ratio and packet delivery. © 2021 IEEE.
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    Real Life Monitoring of Conveyor Line Speed Using IoT and Raspberry Pi
    (Institute of Electrical and Electronics Engineers Inc., 2021) Al-Shahethi, M.G.; Muneer, A.; Ghaleb, E.A.A.; Darshi, S.; Almohammedi, A.A.
    Manual monitoring is time-consuming and frustrates the industry with high costs and delays in the process. This study presented a remote monitoring system for a direct current (DC) motor based on Internet of Things (IoT) for safe and economic data communication in industrial fields. A single sensor monitors the DC motor speed and sends it to the Raspberry Pi microcontroller, which sends it to the cloud database for remote monitoring. The system also presents the manual control methods to adjust the motor speed using a simple potentiometer. Therefore, the proposed system has three functions: measuring, monitoring, and controlling. Measuring is based on an optoisolator sensor and an Arduino Mega microcontroller. Controlling is based on the Potentiometer, Arduino Uno, and a motor drive circuit. Monitoring is based on Raspberry Pi and ThingSpeak platform. Firstly, the speed sensor HC-020K senses the speed Data. Secondly, Arduino Mega extracts the HC-020K sensor's data as a suitable revolution per minute and sends it to Raspberry Pi. Thirdly, Raspberry Pi sends the data to ThingSpeak's Server. Lastly, based on the experiments performed, the system has proved to be very useful and reliable. © 2021 IEEE.