School of Electrical Engineering and Technology (SEET)

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School of Electrical Engineering and Technology (SEET)

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Generation of Random Numbers for Data Security Applications
(7th Annual Engineering Conference, 2006-06-28) Usman A.U; Ajiboye, Johnson Adegbenga
In this age of Electronic connectivity, the issue of data security is becoming more and more of great concern. The growth in computer systems and their interconnections via networks has increased the dependence of several organizations and individuals on information stored and communicated using these systems. Hence, there is need for data and resources to be well protected to guarantee its authenticity and to protect systems from network-based attacks. Cryptography and network security have matured, leading to the development of practical, readily available applications to enforce network security. This work covered a review of the concept of randomness with the stringent randomness requirement in data security systems giving particular attention to the Blum-Blum-Shub random number generator.
Performance Analysis of Statistical Time Division Multiplexing Systems
(Leonardo Electronic Journal of Practices and Technologies, 2010-01) Ajiboye, Johnson Adegbenga; Yinusa Ademola Adediran
Multiplexing is a way of accommodating many input sources of a low capacity over a high capacity outgoing channel. Statistical Time Division Multiplexing (STDM) is a technique that allows the number of users to be multiplexed over the channel more than the channel can afford. The STDM normally exploits unused time slots by the non-active users and allocates those slots for the active users. Therefore STDM is appropriate for bursty sources. In this way STDM normally utilizes channel bandwidth better than traditional Time Division Multiplexing (TDM). In this work, the statistical multiplexer is viewed as M/M/1queuing system and the performance is measured by comparing analytical results to simulation results using Matlab. The index used to determine the performance of the statistical multiplexer is the number of packets both in the system and the queue. Comparison of analytical results was also done between M/M/1 and M/M/2 and also between M/M/1 and M/D/1 queue systems. At high utilizations, M/M/2 performs better than M/M/1. M/D/1 also outperforms M/M1.
Development of a cost-friendly home-range TV transmitter to provide safe TV content to underage unsupervised Kids
(Engineering Conference, School of Engineering and Engineering Technology, 2011) Michael Okwori; Oyewobi S. Stephen; M Saidu; U Abdulahi
The security of a nation is directly linked to the moral conduct of her citizens, and this is affected by the kind of upbringing such citizens received as kids. Direct access of kids to video players and satellite TV receivers can lead to unwholesome programs being watched by the Kids especially when they are unsupervised, which can lead to character degradation and deformation. As a solution to this problem, this work is aimed at restricting unsupervised access of underage persons to programs on these electronics devices. Therefore, a low cost home range TV transmitter with pre-select channel-transmit capability, and auto timed turn-on and turn-off was designed. The designed Transmitter powers a Video player or Satellite TV Decoder at a preset time and transmits pre-selected programs on a Video player or Satellite TV Decoder in a restricted region in the house to a Television Set in an unrestricted region in the House that kids have access to for a preset duration. The Transmitter was tested, and it powered the Decoder and transmitted pre-selected programme at the preset time and for the preset duration.
The Challenges Posed by Information Technology to Secretaries: A Study with Reference to Federal Polytechnic, Bida, Niger State, Nigeria
(The IUP Journal of Information Technology, 2012-12-01) Ajiboye, Johnson Adegbenga; Mary Adebola Ajiboye; Juliet Omozokpia
This study was conducted to identify the challenges of information technologies on secretaries in the Federal Polytechnic Bida, Niger State, Nigeria. The study was embarked upon to emphasize the importance or significance of secretaries as they face the challenges of the information technology in an ICT era. The research was carried out using 50 secretaries. The instrument used in the collection of data was a questionnaire and the data collected was analyzed using the SPSS software. From the analysis of data collected, it was found and concluded that among other things most secretaries lack necessary skills required for ICT in the modern office and most of them with just typing and shorthand skills are on the verge of losing their jobs. Although, it was discovered and concluded that secretaries will not be replaced by computers and that the ones with ICT skills are in high demand and with ample career opportunities in the modern office. It was then recommended that organizations should train and retrain their secretaries to be ICT-compliant and that the curriculum of secretarial study programs should be reviewed and widened to include ICT courses so as to give potential secretaries an ICT background.
Oil and Gas Monitoring Through Wireless Sensor Networks: A Survey
(Ozean Journal of Applied Sciences, 2013) Achonu O. Adejo; Adeiza J. Onumanyi; Jane M. Anyanya; Oyewobi S. Stephen
Effective measurement and monitoring of certain parameters (temperature, pressure, flow etc) is crucial for the safety and optimization of processes in the Oil and Gas Industry. Wired sensors have been extensively utilized for this purpose but are costly and difficult to deploy and maintain. Wireless S ensor Network (WS N) technology is an emerging alternative that introduces significant benefits in cost, ease of deployment, flexibility and convenience. The impact of WS N is expected to be tremendous in industrial automation owing to a report that projected the deployment of 24 million wireless-enabled sensors and actuators worldwide by 2016. With limited literature on this specific subject matter, this paper presents a critical survey into WS N applications as it directly impacts the Oil and Gas Industry. An overview of WS N is presented, case study applications from literature are highlighted and finally research challenges are discussed
Mobile Terminal’s Energy: A Survey of Battery Technologies and Power Control Techniques
(2013) Oyewobi S. Stephen; E. N. Onwuka; Onumanyi A. J
In the last few years of the past decade, advancements in electronics technology have increasingly made electronic devices offer high performance with corresponding decrease in size of the electronic devices. However with this increase in performance and decrease in size of electronics devices there is an increase in demand for mobile devices’ battery to keep the device up for longer period in operation and standby times. Research has however shown that advancements in battery technology have not being in tandem with advancements in other fields of electronics. Therefore wherever battery technology fails, it is complemented by electronics and communication technologies. In this work; a survey of mobile terminal energy management techniques and battery technologies was carried out and Dynamic power control algorithm (DPCA) was proposed. Results from simulation showed that DPCA increased battery performance when compared with another power control technique in literature.
Dynamic Spectrum Access (DSA) in Wireless Cognitive Radio Networks (WCRN)
(2013-02-01) Ajiboye, Johnson Adegbenga; Yinusa Ademola Adediran; Mary Adebola Ajiboye
Dynamic Spectrum Access (DSA) is a technology that senses the unused 'free' but allocated portion of the radio frequency spectrum on a non-interfering basis. These unused bands are also known as 'holes' or 'white spaces'. DSA also refers to the time-varying, flexible usage of parts of the radio spectrum under consideration of regulatory and technical restrictions. This type of spectrum access is due to the dynamic behavior that the Secondary User (SU) must employ in order to access the spectrum, while avoiding interfering with a Primary User (PU). Intelligent or Cognitive Radio (CR) is a platform on which the DSA can be implemented. CRs are radio systems that autonomously coordinate the usage of spectrum. They utilize radio spectrum when it is not being used by incumbent (primary) radio systems. Underutilized spectrum can be exploited with the concepts of DSA and CR. This paper reviews the techniques that can be deployed for DSA reliably in a Wireless Cognitive Radio Network (WCRN) and models of network architecture-based DSA in Cognitive Radio Networks (CRN).
Queue Behavior of Statistical Multiplexers
(The IUP Journal of Information Technology, 2013-03-01) Ajiboye, Johnson Adegbenga; Yinusa Ademola Adediran; Mary Adebola Ajiboye
In a statistical multiplexer, packets are assumed to be arriving at the multiplexer with the inter arrival times being Independent and Identically Distributed (IID). The service time is also IID. The inter arrival times are generated from the corresponding probability distribution. When a packet arrives to an empty or idle system, the packet is immediately served; otherwise, it is queued. In this paper, the queue behaviors in the multiplexer's buffer were examined. The results show that the average number of packets in the multiplexer queue increases in an exponential form with increase in utilization; and at high utilization, there is a dramatic increase in the number of packets in the multiplexer queue which may lead to packet loss when there is no sufficient buffering. Comparison of the simulation and analytical results for the mean number of packets in an M/M/I Multiplexer Queue reveals that results are within ±23% for offered load of up to 90%.
Harmonic Reduction Using Fractional Pitch Winding
(3rd Biennial Engineering Conference, Federal University of Technology, Minna. Nigeria, 2013-05-16) Enesi Asizehi Yahaya; Mark Nwohu; Henry Ohize; O. Imoru; Usman N. Galadima
The power source and the nonlinear loads on transmission line are major sources of harmonics and if these harmonics are not controlled, they could lead to heat loss, break down of machines and reducing the efficiency of any machine connected to the supply. The non-sinusoidal currents from the power source increase harmonic contents in the air gap of electrical machines with pole pitch winding which will lead to excessive losses, vibration and noise. This paper presents the use of fractional pitch winding technique for the stator of three phase motor for the purpose of suppressing harmonics. This is investigated between two windings of pole pitch and short-pitch and the results simulated using Emetor Electric Motor software.
Development of feedback mechanism for microcontroller based SMS electronic strolling message display board
(2014) Dogo, E. M.; Akogbe, A. M.; Folorunso, T. A.; Maliki, D.; Akindele, A. A.
Towards independent measurement of End to End Bit Error Rate in GSM network
(IEEE, 2014-09-29) Gbadamosi Safiu Abiodun,; A. M. Aibinu,; E. N Onwuka; O. C. Ugweje
This article introduces the trends of measuring bit error rate of GSM network independently of the service providers using a PC Based Software System. This paper further reveals the role of software defined radio (SDR) in achieving reception and transmission of signals at any carrier frequency using any standard and protocol which can be reprocessed immediately with the aid of the subject software operation of a PC. The results obtained from the reception and transmission of signals can used to estimate the Bit Error of the signal at that frequency. Thus the possibility and mechanisms of independent measurement of End to End Bit Error Rate have been presented in this paper.
Performance Analysis of Sequential Monte Carlo MCMC and PHD Filters on Multi-target Tracking in Video
(IEEE, 2014-10-21) Abdullahi Daniyan
The Bayesian approach to target tracking has proven to be successful in the tracking of multiple targets in various application contexts. This paper applies sequential Monte Carlo (SMC) filtering techniques such as the Markov Chain Monte Carlo particle filter (MCMC PF) and the SMC probability hypothesis density (PHD) filter as suboptimal Bayesian solutions to multi-target tracking (MTT) in video. The MCMC PF by virtue of its information-centric property, can automatically explore the posterior distribution at each sampling step making it possible to track multiple targets. In doing so, it propagates the full multi-target posterior. The SMC PHD filter however propagates only the first order moment of the multi-target posterior density thereby making it computationally less intensive. A comparison of both filters was carried out in tracking multiple human targets in a video scene demonstrating superior performance by the SMC PHD filter in a realistic scenario. The SMC PHD filter was seen to have higher performance than the MCMC PF in terms of the number of particles, the processing speed, and the tracking performance for multiple targets.
Performance evaluation of mobile intelligent poultry liquid feed dispensing system using two-way controller technique
(The AIMS Publications, 2015) Olaniyi, O. M.; Folorunso, T. A.; Dogo, E. M.; Bima, M. E.; Adejumo, A.
Non-intrusive noise reduction in GSM voice signal using non-parametric modeling technique
(International Engineering Conference (IEC), School of Engineering and Engineering Technology, FUT Minna, 2015-06-15) Gbadamosi Safiu Abiodun,; A. M. Aibinu,; O.C.Ugweje,; A. J Onumanyi ,; E. N Onwuka,; M. Aderinola
Noise degrades the quality and intelligibility of speech. It impedes speech clarity, coding, recognition and speaker identification. To mitigate noise effect and improve speech quality, we propose Non-parametric modeling technique along with a Non-intrusive signal denoising system based on short time Fourier transforms. This paper aims to establish only the idea behind our proposed algorithm, however, we present argument to justify that our results will reduce an end to end acoustic background noise; improve quality of speech for both the speaker and the listener and eventually increase throughput. Ultimately, users’ will be able to call and receive calls in a noisy environment while enjoying clarity of voice.
Permanent Split Capacitor (PSC) alternating current induction motor
(Leonardo Electronic Journal of Practices and Technologies, 2015-06-26) Yahaya Asizehi ENESI; Tola J. OMOKHAFE; James G. AMBAFI; Eugene O. AGBACHI
Single phase induction motors are found in various applications in which having correct value of the capacitor connected to the auxiliary winding enables the motor to function efficiently. This research aim is to investigate and obtain the value of the capacitor of a given input parameters of a specified permanent split capacitor (PSC) induction motor using MATLAB, which will in turn provide easy computation of the output parameters for the motor optimum efficiency. Electrical and mechanical characteristics of the PSC induction motor where obtained and analysed of which the study shows that the motor was reliable due to the absence of centrifugal switch. With the aid of MATLAB program the results were easily obtained, PSC induction motor capacitor value at optimum efficiency was also easily determined. The motor proved to have low starting torque, low starting current, higher efficiency, high pull out torque and high power factor. The characteristics of PSC induction motor analysed was limited to where higher starting torque is required only.
Development and Implementation of Microcontroller-based Improved Digital Timer and Alarm System
(2016) Ajao, L. A.; Adegboye, M. A,; Dogo, E. M.; Aliyu, S. O.; Maliki, D.
Time plays an important role in our daily activities, more particularly in sectional events or conference arena where there is need for accurate time management. This paper focuses on the development and implementation of an improved digital timer with audio-visual unit using (PIC16F887) microcontroller chip and other electronics component such as LCD, 7-segment display, LED and buzzer as an I/O device. Thus, the need for this device in our daily activities is to monitor the time scheduled for events, updating and alert the audience using an audio-visual approach. The proposed system allows apt time management and avoids time wastage during seminar presentations and the likes. It particularly helps presenters to be time conscious, thus, making them to naturally adjust such that the allotted time is enough to cover up their presentation. The digital timer and alarm system presented herewith is also of advantage to the physically challenged like the deaf and blind in monitoring their sectional activities and to be fully involved about the event situation. The system was designed in different modules, and all were interfaced together with firmware chip to simplify the mechanism’s fault diagnoses and fault corrections.
A Model for an Enterprise Automated RFID-Based Pay and Park System
(ceur-ws.org, 2016) Dogo, E. M.; Ahmed, A.; Adelakun, M. O.
Traffic management is one of the challenging problems in urban cities as vehicle owners look for where to park and queue to pay for rented car parks usually on an hourly basis. Therefore, the choice of a suitable, reliable and flexible architecture for Radio Frequency Identification (RFID) based pay and park system readily comes to mind. It is assumed in this work that the parking lot is already known and secured by the vehicle owner in a closed car park; this paper therefore seeks to address and automate the billing system for enterprise car parks. To achieve this, a reliable and accurate enterprise star topology networked RFID based system, that computes the amount to be paid by a user which is calculated based on the time the user enters and exits the park, and the amount the park owner is charging at a particular point in time is proposed for the automated pay and park system. The system comprises of both software and hardware components integrated together. The developed prototype system is able to grant authorized users access to the park within 30ms after verification and open the barrier in 30ms whenever the emergency button is pressed for safety consideration.
Web-Based Decision Support System for Diagnosis of Ebola Virus Disease Using Bayesian Networks
(2016) Dogo, E. M.; Kolo, J. G.; Aror, O.; Rahman, A. T.
The recent epidemic of the Ebola Virus Disease (EVD) left many dead in West Africa and in other parts of the world. A major problem faced was late diagnosis or diagnostic error of the disease; this was due to largely unavailability of medical professionals familiar with the disease and low doctor to patient ratio. An accessible method for reliable diagnosis is required to offset the low ratio of doctors to population. This paper presents the application of Bayesian networks for diagnosis of EVD. A general procedure for implementing a Bayesian network model is proposed; thereafter we demonstrate how the resulting Bayesian network can be applied in a medical diagnostic decision support system. The system uses the questionnaire method to elicit symptoms and is accessible through web browsers over the internet and mobile phones to potential patients and medical practitioners. The system developed is able to provide diagnosis in the form of probabilities, for the presence or absence of EVD in an individual. The probability of an individual infected by the disease depends on present or absent of particular symptoms according to the gathered disease pathology. The system was successfully developed, and had a diagnostic accuracy of 77% when compared to the World Health Organization (WHO) algorithm, but refinements of the conditional probability distribution would provide the most accurate sensitivity to symptoms and also improve the accuracy of diagnosis. Finally, web functionality, performance and usability test on the developed web application is carried out by simulating various load patterns and the result was generally acceptable.
Intelligent Railway Cross Level Gates and Signaling System using Fuzzy Logic Control Technique
(Convenant University, 2016-05-09) Olaniyi, O. M., Abdullahi, I. M., Maliki, D., & Lasore, T. M.
Current manually operated gates at the railway cross levels of developing countries are stressful and time wasting. This has exposed pedestrians to high rate of accident resulting to loss of lives and drastic reduction of the country’s economy. Different systems have been developed to prevent rail accidents at the level crossing but they are not effective and in most cases are too expensive to implement. This study presents a prototype model of an intelligent railway cross level gates and signaling system using Mamdani fuzzy logic control technique. The intelligent system has the ability to detect the arrival/departure of a train and close/open the cross level gates respectively. The system response was evaluated with respect to time. The results after the evaluation of the developed system showed that the system with fuzzy intelligent control technique has a high response with respect to time compared to a system without an intelligent technique. The large scale implementation of the developed intelligent railway cross-level gate and signaling system can be used to prevent avoidable accident occurrence at the level crossings and thus, reduces loss of lives as well as improvement of the nation’s economy through efficient delivery of goods and services in Africa.
Split-phase motor running as capacitor starts motor and as capacitor run motor
(Leonardo Electronic Journal of Practices and Technologies, 2016-06-28) Yahaya Asizehi ENESI; Jacob TSADO; Mark NWOHU; Usman Abraham USMAN; Odu Ayo IMORU
In this paper, the input parameters of a single phase split-phase induction motor is taken to investigate and to study the output performance characteristics of capacitor start and capacitor run induction motor. The value of these input parameters are used in the design characteristics of capacitor run and capacitor start motor with each motor connected to rated or standard capacitor in series with auxiliary winding or starting winding respectively for the normal operational condition. The magnitude of capacitor that will develop maximum torque in capacitor start motor and capacitor run motor are investigated and determined by simulation. Each of these capacitors is connected to the auxiliary winding of split-phase motor thereby transforming it into capacitor start or capacitor run motor. The starting current and starting torque of the split-phase motor (SPM), capacitor run motor (CRM) and capacitor star motor (CSM) are compared for their suitability in their operational performance and applications