Browsing by Author "Bilkisu JIMADA-OJUOLAPE"

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    Development of a GSM based Vehicle Demobilizer and Tracking System
    (2023-12-01) Bilkisu JIMADA-OJUOLAPE; Oluwafunto SPENCER; Monsurat Omolara BALOGUN
    Vehicle hijacking remains a pervasive global issue, posing heightened risks, especially when owners face armed hijackers. Concurrently, the disposal of old mobile phones contributes significantly to the escalating electronic waste (e-waste) challenge, emphasizing the imperative of responsible recycling practices. Addressing these concerns, this paper introduces a GSM-based vehicle demobilizer and tracking system, utilizing a cost-effective mobile phone connected to the device through a SIM card and operating with an NE 555 timer IC in bistable mode. In the event of a hijacking, a call to the mobile phone triggers the device, halting the vehicle. In the prototype design presented in this paper, the result of the output is represented by an LED to show that the circuitry actually works. When the device was tested, the LED illuminated when a call was placed to the mobile phone connected to the device which signifies that the circuit works and can achieve its purpose. The resulting design also shows that the vehicle owner can prevent his car from being stolen away even after it has been hijacked without self-endangerment and within a short time frame.
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    Development of an Automatic Phase Selector for Nigerian Power Utility Customers
    (College of Engineering, Afe Babalola University, Ado-Ekiti, Nigeria, 2024-07-01) Lambe Mutalub ADESINA; Olalekan OGUNBIYI; Bilkisu JIMADA-OJUOLAPE
    Power utility customers in a developing country like Nigeria have constituted a habit of changing the electricity supply line from an unavailable or unstable phase to the most available or stable phase. The category of customers involved in this character are those on single phase power supply. However, this act is being carried out manually at the meter point using the cut-out fuses. This attitude results in phase unbalances, overheating electrical equipment including feeder pillars, transformer coils, network faults, and overall system instability. Thus, this paper presents the development of an Automatic Phase Selector for Nigerian Power Utility Customers. The device automatically selects an available phase from the three-phase power supply lines. The research comprises designing an automatic phase selector circuit, simulation of the designed circuit, programming code development in C- Language for the microcontroller, construction of the designed circuit, and carrying out tests on completed work done to ascertain the effectiveness of the developed system. The system operation involved a three-phase supply from the closest distribution network of the power utility company which is connected to a three-in-one gang switch while the switching ON and OFF of their static switches represent phase-off in an ideal situation. The operational results of this system are presented in the form of the truth table which indicates that the affected customer would not have a power supply only when the 3-phases are under voltage or overvoltage or unavailable. This implies that one of the three phases that meet the three criteria would be switched ON. A pure sine wave was used as input into the Optocoupler and the output waveform of the rectified pulsating signal is separately displayed. This output waveform is very clean and noiseless. Finally, the system when practically tested with an unbalanced three-phase supply, worked perfectly enhancing the flexibility of operating an Automatic Phase selector and hence avoiding manual switching of the phase selector which has been attributed to changing of cut-out fuses and associated stress as well as having a user-friendly phase selector.
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    Development of Water Level Controller with SMS Capability
    (College of Engineering, Afe Babalola University, Ado-Ekiti, Nigeria, 2024-05-16) Lambe Mutalub ADESINA; Olalekan OGUNBIYI; Bilkisu JIMADA-OJUOLAPE
    Water is considered a valuable resource and covers about 70% of the earth's surface. The tight schedule prevents regular checking of the domestic water tank level while refilling the used ones. This often leads to a waste of water and increased monthly revenue payments to power utility companies. Consequently, this paper presents a water level controller with SMS capability aimed at measuring water level smartly such that when a tank is filled, a message would be automatically transmitted as an alert to the owner using GSM for immediate response. The method involves the interconnection of a water container that serves as a tank with another open container serving as a Bore-hole and a microcontroller-based device with its integrated development to generate a communication message. A flowchart that shows the procedural steps involved was developed. On completion of the prototype, components and sub-circuits effectiveness as well as experimental testing of the system's effective operation were carried out. Some anticipated water level (AWL) were selected at an interval of 2 centimeters (cm) starting from 3cm and the corresponding Message Operating water level (MOWL) were obtained with error deviations not greater than 0.17cm. Thus the average AWL, average MOWL, and error deviation are 11cm, 10.7cm and 0.1cm. The prototype device thus operated effectively.