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Development of an Automated Estimating Electronic Weighing Scale
(ABUAD Journal of Engineering Research and Development (AJERD), 2023) Ogunbiyi O., Mohammed, O. C., & Adesina L. M.
Analog weighing scales suffer from a lack of precision while reading the output and they can easily be manipulated by any technically biased individual. In this paper, the development of an automated and price estimating weighing device is considered. It aims at developing a means to a framework to evaluate estimated weight in analog to digital forms, such as to obtain higher precision in estimation and calibration. The circuit consists of a Load Cell as the sensor, an amplifier to boost the low signal from the sensor, an Atmega328 microcontroller, a 16x2 Liquid crystal display, and a few additional glue components. The 20 kg load cell converts the pressure from the load to an equivalent electrical signal which will be sent to the Hx711 IC module. Hx711 amplifies and processes the corresponding output to the Atmega328 microcontroller. The system uses the 4x3 keyboard to input the unit cost per kg to the electronic scale. The microcontroller automatically adjusts the signals with the load cell amplifier module's guide, thus sending the estimated cost to the Liquid crystal display module. The circuit was designed, constructed, and tested to show that a computerized electronic weighing system can be locally and cheaply made. Comparison with the state-of-the-art scale shows that the constructed digital scale was accurately calibrated without errors.
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Enhancement of the Nigerian National Grid Performance with a FACT Compensator
(Faculty of Engineering, University of Benin, Benin City, Edo State, Nigeria, 2022) Ogunbiyi, O., Adesina, L.M., Ugwute, F.O. and Thomas, C.T.
The Nigerian grid is faced with loss of lines and system collapse due to overloads, under-loads, and inadequate reactive power at the buses. Analysis of the power flow supported by static voltage stability condition of the system can provide insight to the system performance indicators like voltage profile, power flows and losses. Voltage control and power loss reduction strategies are still based on mechanical methods such as synchronous generators/condensers, tap changing of transformers, switching of shunt reactors and capacitor banks, switching of transmission lines, generating unit scheduling, and manual load shedding. However, flexible alternating current transmission systems (FACT) such as a static VAR compensator offers flexible and fast control of power system operations unlike the mechanically switched devices which are restricted by wear and tear and slow response. Hence this work demonstrates the use of static voltage analysis in seeking the optimal placement of a static volt-ampere reactance (VAR) compensator called (SVC) on the power system. This idea was tested on the Transmission Company of Nigeria (TCN) 330 kV-bus system which was modelled and analyzed using NEPLAN software and the results showed substantial improvement in the voltage profiles and loss reduction. Simulations of the peak condition showed that 9 stations violated the set limits. It is recommended that FACTS devices be optimally located at Sakete (6°44′11″N 2°39′29″E) bus bars for effective transmission of electric power on the grid.
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Development of Embedded Control for a Repetitive Pick and Placed Robotic Arm
(FUOYE Journal of Engineering and Technology, 2023-06) Ogunbiyi, Olalekan
Manual execution of tasks is usually strenuous and exhaustive, some tasks may be repetitive in nature such that it requires full concentration. Nowadays, the integration of robotics into commercial and industrial activities to perform repetitive, dangerous, and difficult is becoming a norm. This work focuses on the implementation of a robotic arm. The robotic arm was designed to have six degrees of freedom. The control circuit includes an embedded Atmega328P microcontroller interfaced with servomotors and other glue electronic components such as sensors and buttons. The system is structured and programmed to operate automatically, performing a repetitive routine. The rotation and orientation of the device were tuned by sending required pulse width modulation (PMW) signals to different servomotors, such that they rotate as desired. The system employs six potentiometers in varying the duty cycle generated by the microcontroller. The system is structured such that three servomotors manipulate the motion of the body, the shoulder, the arm elbow, and the base. Manipulations of the end effector were also carried out by another three servomotors, each one controlling the gripper pitch, the movement of gripper spin, and that of the gripper itself. The constructed robotic arm gives a good response when tested for repetitive picking of objects. A similar acceptable performance was repeated in the autonomous lifting and dropping of objects items.
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A Study of the Use of Honey and Ethno-biological Components in Nigerian Trado-medical Practices
(British Journal of Applied Science & Technology, 2014) Ajao, Adeyemi Mufutau; Oladimeji, Y.U.; Babatunde, S. K.; Obembe, A.
Trado-medical practice variously referred to as ethno-medicine, folk medicine, native healing, and alternative medicine, is an ancient and culture-bound method of healing used against various diseases threatening human existence and survival. The aim of this study was to investigate the use of honey and other ethno-biological components in the treatment of different ailments in Kwara State, North central Nigeria. Structured questionnaire and interview schedule were used to collect information from 280 respondents (120 herb sellers and 160 trado-medical practitioners). The result revealed methods of remedies’ preparation such as infusion, decoction, maceration, extraction, squeezing, soaking, shredding, grinding/pounding, and drying while the mode of use include: drinking, chewing, licking, eating, and topical application. It was also observed that 20 plants and 6 animal products distributed across 18 and 5 families respectively were being used in combination with honey for the treatment of arthritis, toothache, cold, chronic cough, stomach ulcer, diabetes, wounds, hypertension, low sperm count, ear defect, rheumatism, malaria and infertility among others. The knowledge of trado-medical practices elicited could serve as a basis for further drug discovery, pharmacological research and bio-prospecting.
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Prediction of body weight from linear body measurements in two turkey breeds.
(2021) Yusuff,A.T.; Matthew, O.A.; De Campos, J.S.; Ajao, B.H.; Lawal, M.O.; Aremu,J.O.