Browsing by Author "Saminu, S."

Now showing 1 - 5 of 5
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    BLUETOOTH-BASED AUTOMATED PATIENT MONITORING DEVICE
    (School of Engineering and Engineering Technology of the Modibbo Adama University of Technology Yola, Nigeria., 2024-03) Ibitoye, M.O.; Bakare, T.I.; Saminu, S.; Yahaya, S.A.; Ajibola, T.M.
    Illness, characterized as a disease or a state of sickness impacting both body and mind, often manifests as general body weakness or localized pain. Despite the availability of technical and therapeutic innovations aimed at enhancing human health and life quality, the continuous monitoring of patients by healthcare professionals for 24 hours daily is impractical. To systematically address this challenge, this study sought to create an automated patient healthcare device. Utilizing sensor technology, an AT-Mega microcontroller, and a Bluetooth module, the device facilitates independent health monitoring or monitoring by a caregiver. The system is designed to effectively handle situations where no immediate caregiver is available to attend to the patient's needs. This is achieved by enabling the patient to send a help message to the caregiver through a simple hand motion. Positioned on the patient's hand, the device allows tilting at specific angles to convey programmed help messages, each direction indicating a distinct message. Through sensitivity analysis during device testing, which gauged the device's success in recognizing hand movements for seeking assistance, the average sensitivity was determined to be 76.6%. These results signify promising outcomes, encouraging further exploration in clinical settings. Beyond accommodating seamless use by neurologically intact patients, the device proves beneficial for individuals with hemiparalysis, conditions hindering effective communication, and any circumstance necessitating the presence of a caregiver.
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    BLUETOOTH-BASED AUTOMATED PATIENT MONITORING DEVICE
    (Nigerian Journal of Engineering Science and Technology Research, 2024) Ibitoye, M.O.; Bakare, T.I.; Yahaya, S.A.; Saminu, S.; Ajibola, T.M.
    Illness, characterized as a disease or a state of sickness impacting both body and mind, often manifests as general body weakness or localized pain. Despite the availability of technical and therapeutic innovations aimed at enhancing human health and life quality, the continuous monitoring of patients by healthcare professionals for 24 hours daily is impractical. To systematically address this challenge, this study sought to create an automated patient healthcare device. Utilizing sensor technology, an AT-Mega microcontroller, and a Bluetooth module, the device facilitates independent health monitoring or monitoring by a caregiver. The system is designed to effectively handle situations where no immediate caregiver is available to attend to the patient's needs. This is achieved by enabling the patient to send a help message to the caregiver through a simple hand motion. Positioned on the patient's hand, the device allows tilting at specific angles to convey programmed help messages, each direction indicating a distinct message. Through sensitivity analysis during device testing, which gauged the device's success in recognizing hand movements for seeking assistance, the average sensitivity was determined to be 76.6%. These results signify promising outcomes, encouraging further exploration in clinical settings. Beyond accommodating seamless use by neurologically intact patients, the device proves beneficial for individuals with hemiparalysis, conditions hindering effective communication, and any circumstance necessitating the presence of a caregiver.
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    EQUIVALENT CIRCUIT OF A FREQUENCY RECONFIGURABLE METAMATERIAL MIMO ANTENNA FOR INTERNET OF THINGS APPLICATIONS
    (School of Engineering and Engineering Technology of the Modibbo Adama University of the Technology, Yola, Nigeria, 2024-03) Jabire, A.H.; Abana, M.A.; Saminu, S.; Adamu, M.J.; Sadiq, A.M.
    This study introduces a metamaterial MIMO antenna design that offers frequency reconfigurability. The antenna is intended for Internet of Things (IoT) applications. It is simulated using an FR4 substrate with dimensions of 1.6mm thickness and 0.025 loss tangent. Based on the proposed design, the MTM MIMO antenna can operate at 2.5GHz & 2.54GHz (WLAN), 4.2GHz, 6.6GHz, 6.64GHz & 7.8GHz (C-Band), and 9.6GHz &9.7GHz (X-Band). To accomplish this, Two PIN diodes are connected to each gap capacitance of the MTM antenna. The performance enhancement of the reconfigurable MTM MIMO antenna was achieved using a CST microwave solver. The system performance was validated using ADS. Furthermore, the diversity metric conducted on the proposed MTM MIMO antenna revealed that the antenna has a low correlation coefficient (<0.03), total active reflection coefficient (<0dB), and channel capacity loss of (<0.4bits/sec/Hz). The simulated isolation of <-20dB is noticed for all four states. The antenna peak gain is 3.1 dBi. An MTM MIMO antenna with these characteristics suits many IOT communication systems.
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    Harmonic Mitigation in Inverter Circuits Through Innovative LC Filter Design Using PSIM
    (Universitas Ahmad Dahlan, Indonesia, 2024-04) Usman, H.M.; Mahmud, M.; Saminu, S.; Ibrahim, S.
    The increasing use of renewable energy sources, such solar and wind power, and the growing ubiquity of High Voltage Direct Current (HVDC) transmission systems to improve power transmission efficiency are the main factors behind the increased deployment of inverter circuits. High harmonic distortions in the resultant sine wave, however, are a major problem for inverter circuits and could jeopardise circuit efficiency if left unchecked. This study presents a novel, affordable, and effective LC filter that is intended to remove almost all harmonic content from inverter circuits. The study uses PSIM software for the modelling, design, and control of a three-phase inverter. Starting with DC power supply, the study makes use of effective three-legged IGBT (insulated gate bipolar transistor) semiconductor devices as switch elements due to their high and current rating as well as faster operation. The switching gate pulses that turn inverter switches on and off at regular 60-degree intervals are produced by the pulse controller that controls the switches. This study's results show that the innovative LC filter in the inverter significantly reduced total harmonic distortion (THD) in all phases of the power signal. Specifically, THD decreased from 37.68% to 0.47% in the red phase, from 37.69% to 0.48% in the blue phase, and from 37.71% to 0.48% in the yellow phase. This reduction results in a notable improvement in power quality in all phases of the signal. Additionally, there is a noticeable increase in voltage magnitude, stabilizing and raising levels from 17.92 V to 23.83 V in the red phase, 17.93 V to 23.81 V in the blue phase, and 17.83 V to 23.81 V in the yellow phase due to the LC filter. These results demonstrated the effectiveness of the LC filter-equipped inverter for industrial, HVDC, and renewable energy applications.
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    WIND-POWERED AGRICULTURE: ENHANCING CROP PRODUCTION AND ECONOMIC PROSPERITY IN ARID REGIONS
    (Department of Electrical Engineering, Faculty of Engineering, Universitas Semarang., 2024-04) Usman, H.M.; Mahmud, M.; Yahaya, M.S; Saminu, S.
    Over an extended duration, small-scale farmers have been contending with the persistent issue of electricity scarcity, which adversely affects crop production, particularly during dry seasons. The dependence on generators, despite being expensive and environmentally harmful due to oil spillage and Carbon dioxide (CO2) emissions, remains a prevalent yet unsustainable solution. Wind energy emerges as a promising alternative with diverse benefits for farmers, addressing concerns related to irrigation, storage, and water management, ultimately leading to significant yield increases during dry periods. This study investigates the performance of a small-scale wind energy conversion system tailored for the irrigation needs of farmers in arid regions, focusing on Zaria Local Government, Kaduna State, Nigeria as a case study. Utilizing wind speed data from the Nigeria Meteorological Agency (NIMET), the system's electrical parameters, including voltage, current, frequency, and power, were analyzed to assess fluctuations resulting from wind speed variations. Results show significant variability in electrical parameters: wind speed ranged from 3.10 m/s to 9.83 m/s, resulting in fluctuations in generated voltage (98 volts to 250 volts), current (51 amps to 103 amps), frequency (39 Hz to 65 Hz), and power (5.1 kW to 20.6 kW). Converter systems were found effective in stabilizing output for grid integration: the AC/DC converter converted fluctuating AC signals into stable DC output (200 volts, 93 amps), while the subsequent DC/AC inverter produced non-fluctuating AC output (voltage: 200 volts, current: 92 amps, frequency: 50 Hz, power: 18.3 kW). These findings emphasize feasibility of implementing wind energy solutions in remote agricultural areas.