Electrical & Electronics Engineering

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Electrical & Electronics Engineering

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Subject: search.filters.subject.Microcontroller

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    Glare Stopper: The Automatic Car Headlight Management System
    (2023-03-22) Abdullahi Daniyan, Samuel S. Ilupeju
    The growing number of vehicles on roads calls for increased safety considerations, especially during night driving. A common issue is the misusage of high beam headlights, which can cause light glare for opposing drivers due to the high intensity beam a driver receives from oncoming vehicles. This is called the Troxler Effect. This is a safety critical issue given that the human eyes are very sensitive to light, and when eyes suddenly encounter high intensity light, one’s vision get temporarily affected and require some time to recover the vision. During this vision recovery window, the vehicle has covered some distance which could increase the likelihood of an accident occurring. To address this, we propose an automatic car headlight management system that adjusts a vehicle’s headlights based on light intensity of oncoming vehicles. The system utilizes an Arduino Uno microcontroller and an LDR sensor installed on the driver's side to detect light levels of at least 700 lumens. The microcontroller then sends a command to a relay, which switches the headlights from high beam to low beam. Results demonstrate effective performance of the proposed system in terms of achieving faster switching time and consuming lower power.
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    Promoting an IoT-based waste-bin management system in higher institution
    (Journal of Science, Technology, Mathematics and Education (JOSTMED), 2019-12-13) Gbadamosi Safiu Abiodun; Galadima Nuhu Usman
    The accumulation of waste around faculty and hostels in higher institutions has become a great sense of concern to both staff and students. Often time the scene of the dumb sites is characterized by unpleasant smell and germs that can be harmful to the health status of both staff and students. To maintain the waste collection and proper waste disposal, we propose an IoT-based waste-bin management system. The IoT-based waste-bin management system employed the use of cloud server (Thingspeak) capable of computing, analysing and presenting a graphical representation of waste with the aid of an ultrasonic sensor through the microcontroller unit embedded with WiFi module. The ultrasonic sensor monitors the waste in respect to the time difference between the emitted and receipted wave of the sensor at a frequency of 40 kHz from a distance of 2 cm to 400 cm. The microcontroller samples, digitized and processed the sensor data before being sent over the network to the cloud server. The result obtained is a graphical representation of the status of the waste viewed from both the liquid crystal display (LCD) and the web interface. The graph varies from 25% to approximately 75% filled value of the waste-bin. The system can be used for proper monitoring and for future decisive actions on amount of waste generated. The device is easy to implement due to its cost-effectiveness.