Koudjo M. Koumadi

Rotational energy harvesting to prolong flight duration of quadcopters

This paper presents a rotational energy harvester using a brushless dc (BLdc) generator to harvest ambient energy for quadcopter in order to prolong it flight duration. For a quadcopter, its endurance is essential in order to achieve operational goals such as scientific research, security, surveillance, and reconnaissance. Because quadcopters have a limitation on size and mass, they cannot carry a large mass of on-board energy thereby having short flight time. In this paper, BLdc generators are coupled with the propellers of the quadcopter to transfer kinetic energy from the propellers to the generator. Taking into consideration the power requirement of quadcopter, the output of the generator is amplified using dc–dc boost, and is regulated to power and charge the on-board battery. The BLdc generator is simulated in MATLAB/Simulink. A final prototype of the rotational energy harvesting system is built, and this comprises a quadcopter, power management system, and a battery charging system.

Design and implementation of a fire detection and control system for automobiles using fuzzy logic

The immense benefits of fire in road transport cannot be overemphasized. However more than two thousand vehicles are damaged by unwanted fire on a daily basis. On a global scale, incendiary losses to the automobile and insurance industries have ran into billions of dollars over the last decade. A not-so-distant contributory factor is the lack of a sophisticated fire safety system on the automobile. This has been addressed by designing and implementing fuzzy logic control system with feedback over an Arduino micro-controller system. The automatic system consisting of flame sensors, temperature sensors, smoke sensors and a re-engineered mobile carbon dioxide air-conditioning unit was tested on a medium sized physical car. Results show that the automobile fire detection and control system devoid of false alarms, detects and extinguishes fire under 20 seconds. An innovative, very promising solution module for hardware implementation in fire detection and control for automobiles has been developed by using new algorithms and fuzzy logic.

Rotational Energy Harvesting To Prolong Flight Duration of Quadcopters

This paper presents a rotational energy harvester using brushless direct current (BLDC) generator to harvest ambient energy for quadcopter in order to prolong it flight duration. For a quadcopter its endurance is essential in order to achieve operational goals such as scientific research, security, surveillance and reconnaissance. Because quadcopters have a limitation on size and mass they cannot carry a large mass of onboard energy thereby having short flight time. In this paper BLDC generators are coupled with the propellers of the quadcopter to transfer kinetic energy from the propellers to the generator. Taking into consideration the power requirement of quadcopter, the output of the generator is amplified using DC-DC boost and regulated to power and charge the on-board battery. The BLDC generator is simulated in MATLAB/SIMULINK. A final prototype of the rotational energy harvesting system is built and this comprises a quadcopter, power management system and a battery charging system.

Semi-Automatic Car Anti-Theft Design using ATMega168 Microcontroller

ABSTRACT The design and manufacture of anti-theft systems have become more and more complex due to the rise in complexity of theft in the system. Most of the anti-theft systems available on market, are the alarm types that audibly deter some thieves away but do not prevent one’s car from being stolen and also may not be good enough to meet the growing complexity of theft in the country. This paper presents a simpler and a more efficient car anti-theft system that provides users with improved security by the use of efficient access mechanisms and immobilization systems. Access mechanisms were put in place to request authorization from the user and a hidden button which gives permission to start the car when it is pressed. Immobilizers where put in place to disable car in case it is stolen. The system was based on the ATMega168 microcontroller programming which involve the use electronic components such as limit switches, LEDs and transistors. The programming concept follows the graph theory well known as state machine implementation in Micro-processing and the language adopted was the C programming language.