The prevailing treat to lives and property by the usage of gas for cooking, etc, and the rapidly ... more The prevailing treat to lives and property by the usage of gas for cooking, etc, and the rapidly increasing evolution in new technologies worldwide, a novel approach utilizing dual communication network providers is applied to alert users in the event of leakage of Liquefied Petroleum Gas (LPG). In this work, a prototype gas leakage detector, based on dedicated Peripheral Interface Controller (PIC), sensitive MQ-6 gas sensor, GSM/GPRS SIM900 and discrete components is developed and tested. Glo and MTN network service providers were selected for the design. Both indoor and laboratory tests were conducted where the results indicate gas concentration levels of 372 ppm to 255 ppm were measured to display a message on Liquid Crystal Display (LCD) and trigger audio alarm at instances of 2.42 secs and 8.35 secs in locations of 5 cm and 30 cm away from gas source respectively. Finally, the viability test proved satisfactory as it indicates that whenever a particular network fails, the seco...
Power factor correction is a vital tool for maintaining the terminal voltage of an electrical sys... more Power factor correction is a vital tool for maintaining the terminal voltage of an electrical system that operates at low power factor since any sudden change in power factor and current affect the terminal voltage of the system. If the power factor of any electrical system is improved to unity with the application of capacitors, the current of the same value of the power to be supplied is reduced to a minimum. This results in total reduction of power losses, terminal voltage drop and sizes of transformers, alternators, cables and switchgears. In order to encourage the large electricity end users to keep their loads at a unity or near unity power, electricity tariff is structured in such a way to depend on the consumers’ power factor. Power factor correction will result in reduction of maximum demand (KVA or KW) and affect the annual saving over the maximum demand charge. Also some expenditure will be incurred annually in the form of the interest and depreciation made over the power...
Abstract This article describes the implementation of a Bluetooth technology and an android appli... more Abstract This article describes the implementation of a Bluetooth technology and an android application with voice prompts based home-automated system using an Arduino microcontroller. The system is aimed at designing an automated appliance control that is user-friendly and convenient to use. The design comprised an Arduino ATMEGA328 microcontroller board, Bluetooth module (HC-06), and an android application (MIT App Inventor 2). The Arduino controls any connected component and was programmed with C++ programming language by using Integrated Development Environment (IDE). Relays and Triacs are used for the switching mechanism. Once the system is connected, the user controls the electrical appliances connected to the home-automated system, which can also be controlled using voice prompt with the help of a Google assistant inbuilt with the android smartphone. The system switches the home appliances ON and OFF using the android app, Bluetooth module, and voiced prompt. It can also be timed to switch off appliances for a pre-time of 12 h, thus making the application easy and convenient to operate via a smartphone.
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
One of the prominent techniques used to mitigate the electromagnetic energy radiation (which caus... more One of the prominent techniques used to mitigate the electromagnetic energy radiation (which causes interference in the signal transmission) is smart antenna. The smart antenna system remains the noticeable dynamic approach employed to develop the power output of the signal of interest in a specified direction and reduce the interfering signal power in unnecessary direction. Smart antenna system comprises of an arrangement of multiple numbers of antenna elements whose signals are logically connected to utilize the two-dimensional (2-D) domain and enhance the efficiency of a wireless communication system. This research work emphasis on how the smart antenna can adaptively optimize the signal to noise ratio (SNR) of multiple antenna arrays in an arbitrary location and a specified direction of signal. Adaptive array technique using Applebaum array algorithm is considered in this work. The method is practical in the implementation, used in interference rejection. Phase arrays cannot pro...
DOI: http://dx.doi.org/10.24018/ejece.2021.5.3.328 Vol 5 | Issue 3 | June 2021 60 Abstract — Rece... more DOI: http://dx.doi.org/10.24018/ejece.2021.5.3.328 Vol 5 | Issue 3 | June 2021 60 Abstract — Recent technological advancements have made things in an efficient manner. This paper presents the overall design of Dual-tone multi-frequency (DTMF) signaling with little cost and establishes a new pattern for home automation developments. The benefits of a DTMF system is that it may be controlled remotely from afar, effectively saves energy, minimizes human stress. One of the most developing trends in home appliance control innovation is DTMF-based home automation technology using Arduino. In order to make this project work, an Arduino Uno was used. This is primarily about the ATmega328 microcontroller (MCU). It comprises of 14 digital output/input pins, analogue inputs of about 6 ports, a USB port for programming the onboard microcontroller, an ICSP header, a power jack, and a reset button. DTMF can be realized using numerous approaches for example, Discrete Fourier Transform (DFT), and G...
This research work seeks to analyse the performance of a two-phase induction motor using dynamic ... more This research work seeks to analyse the performance of a two-phase induction motor using dynamic model based on MATLAB. The 4 th order Runge-Kutta was used for the solution of this dynamic model. The modelling and simulation will be strictly for Two-phase induction motors used in low power applications. Measured and simulated results would be discussed and correct mitigation techniques would also be recommended .Future work within the scope of this research work would also be discussed. With the growing concerns about low-cost operation and efficient use of energy, Two-Phase induction motors have gained interest in low-power applications, especially for domestic or commercial applications where a three-phase power supply is not available. This result from this research work would help improve the design of two-phase induction motor used in the applications above.
Abstract This article describes the implementation of a Bluetooth technology and an android appli... more Abstract This article describes the implementation of a Bluetooth technology and an android application with voice prompts based home-automated system using an Arduino microcontroller. The system is aimed at designing an automated appliance control that is user-friendly and convenient to use. The design comprised an Arduino ATMEGA328 microcontroller board, Bluetooth module (HC-06), and an android application (MIT App Inventor 2). The Arduino controls any connected component and was programmed with C++ programming language by using Integrated Development Environment (IDE). Relays and Triacs are used for the switching mechanism. Once the system is connected, the user controls the electrical appliances connected to the home-automated system, which can also be controlled using voice prompt with the help of a Google assistant inbuilt with the android smartphone. The system switches the home appliances ON and OFF using the android app, Bluetooth module, and voiced prompt. It can also be timed to switch off appliances for a pre-time of 12 h, thus making the application easy and convenient to operate via a smartphone.
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
The rapid advancement in wireless communications systems and the narrow bandwidth accessibility i... more The rapid advancement in wireless communications systems and the narrow bandwidth accessibility is a challenging work in the communication field. One possible suggestion for the bandwidth restriction is to use smart antenna systems. The preferred bandwidth is one of the decisive considerations used to adopt upon an antenna. For example, various antenna types have very narrow bandwidths and this is unsuitable for wideband operation. A theoretical and practical analysis has been analyzed on the effect of smart antenna dimension with figure of merit such as bandwidth in this research work. Smart antenna has been analyzed as effective counter methods to improve channel bandwidth and capacity in addition to reduce the channel interference. The analyzed process proffers the wide bandwidth, less electromagnetic interruption, phase control free of frequency and small propagation loss. The modeling and simulation of smart antenna with improved bandwidth between the lowest frequency FL = 0.5 ...
The production cost of electricity is a very important index in national development. Electricity... more The production cost of electricity is a very important index in national development. Electricity tariff depends on the fuel cost which carries the highest percentage of the total operation cost in any power plant. In order to keep electricity tariff as low as possible, fuel cost which carries the highest percentage of the total operating cost has to be min imized. Economic operation of the power plants can be achieved through economic load dispatch and unit commit ment. Lagrange relaxation is one of the best solutions in solving economic load dispatch problem because it is more efficient and easier than other methods. This approach has been implemented to minimize the fuel cost of generating electricity while taking into account some technical constraints.
The International Journal on Communications Antenna and Propagation, 2017
In wireless communication systems, smart antenna is designed to improve radiation in one directio... more In wireless communication systems, smart antenna is designed to improve radiation in one direction and null out interference in other direction. This can be realized by increasing the directivity of the antenna element which leads to gain in a specific direction. At high frequency, transmission of signals is characterized with impairments. Mitigation of these signal impairments can be accomplished through the improvement of directivity and gain of smart antenna system at terahertz frequency range. This research work proposed and examined smart/ adaptive antennas array at terahertz (THz) frequency range, which can be applied for far distance communications and can be extended to the far-field region of antenna. The adaptive/smart antenna array is appropriately operational in the range of 300 GHz to 3 THz for wireless local area network (WLAN) applications that uses high-frequency (HF) radio waves. The efficiency of this adaptive array antennas system has been optimized and simulated ...
Reliability is an analytical tool used to measure the ability of a power system to perform a func... more Reliability is an analytical tool used to measure the ability of a power system to perform a function when required for a specified period of time in particular environment and conditions. Reliability analysis is a vital tool for critical identification of sensitive components of the electrical power systems that need more attention for better improvement and at the same time to increase the system availability. The aim of this research work is to carry out reliability assessment of electrical power system by using some reliability indicators. Hence this work presents a research on reliability assessment of 330/132KV substation by using Ayede 330/132KV substation as a case study. Ayede 330/132KV substation feeds six different 132/33KV substations, such as Jericho, Ijebu ode, Ibadan North, Sagamu, Ayede and Iseyin. In this study different parameters that determined optimum operation of a power system such as SAIDI, CAIDI, SAIFI, CAIFI, CIII, MAIFI and ASAI were deduced.
The design of smart antenna using waveguide-fed pyramidal horn antenna gives a better system perf... more The design of smart antenna using waveguide-fed pyramidal horn antenna gives a better system performance of directional radiation beam pattern with a high gain and wide impedance bandwidth. At higher frequencies, the effects of interference cannot be overemphasized as the quality of signal is reduced significantly. To overcome this drawback on the propagation of signal, smart antenna offers the mitigation of interference on signal transmission and reception as it combines its different elements and digital signal processing capacity. This research work presents an innovative approach of designing smart antenna using a waveguide-fed pyramidal horn antenna for wireless communication systems. For the optimum performance of smart antenna at higher bandwidth for this research work, waveguide-fed pyramidal horn antenna possessed unique electrical features with centre frequency of 30 GHz, distribution taper of all side-lobes equal (Dolph-Chebychev), side-lobe level of 14 dBi, orientation (...
In the present scenario the challenge is to transmit the data at rate 10 gigabits per second for ... more In the present scenario the challenge is to transmit the data at rate 10 gigabits per second for the terahertz frequency regime. One prominent technique that can proffer solution for the efficient transmission at this frequency wideband is Smart Antenna. This research work proposed and examined smart antennas also known as adaptive array antennas at terahertz frequency range. The prototype antenna is suitably operating in the range of 300 GHz to 3 THz for wireless local area network applications that uses high-frequency radio waves. The antenna has been put together on a Rogers RT Duroid dielectric substrate of Svensson/Djordjevic loss type with dielectric permittivity of εr = 2.33, loss factor/tangent (tan δ) of 1.2 * 10-3, relative permeability (μr) = 1 and the thickness of h = 0.80 mm. Rogers RT Duroid dielectric substrate has been taken as our substrate due to the low dielectric loss which make it suitable for high-frequency laminate over the FR-4 substrate. The antenna receives...
The consideration of smart antenna system using an 8×8 planar phased-array antenna offers the syn... more The consideration of smart antenna system using an 8×8 planar phased-array antenna offers the synthesis of a needed beam pattern which is not obtainable with a single patch antenna element. In this research work, a high performance planar phased-array antenna has been designed using an 8×8 square grid of z-controlled antenna monopoles with a length of 0.482λ. The considered element spacing is 0.315λ and the average directivity of 22.0 dBi. The uniform current distributions and binomial current distribution has been used for the design. To minimize the side lobe level characteristic to a lower one of -20 dB with reference to the main beam, the binomial current distribution is preferred for the work. This approach for the synthesis of antenna's beam pattern reduces multiple interferences by installing nulls in the course of signals interference and putting the central beam pattern in the track of the targeted signals in phase and amplitude regulation.
Oluwole, A. S., Odekunle, O. P., & Olubakinde, E. (2021). Applications and Recent Development of DTMF Based Technology in Home Automation. European Journal of Electrical Engineering and Computer Science, 5(3), 60-67., 2021
Recent technological advancements have made things in an efficient manner. This paper presents th... more Recent technological advancements have made things in an efficient manner. This paper presents the overall design of Dual-tone multi-frequency (DTMF) signaling with little cost and establishes a new pattern for home automation developments. The benefits of a DTMF system is that it may be controlled remotely from afar, effectively saves energy, minimizes human stress. One of the most developing trends in home appliance control innovation is DTMF-based home automation technology using Arduino. In order to make this project work, an Arduino Uno was used. This is primarily about the ATmega328 microcontroller (MCU). It comprises of 14 digital output/input pins, analogue inputs of about 6 ports, a USB port for programming the onboard microcontroller, an ICSP header, a power jack, and a reset button. DTMF can be realized using numerous approaches for example, Discrete Fourier Transform (DFT), and Genetic Algorithm (GA). These techniques are generally analyzed using MATLAB, GUI, and FPGAs. ...
The production cost of electricity is a very important index in national development. Electricity... more The production cost of electricity is a very important index in national development. Electricity tariff depends on the fuel cost which carries the highest percentage of the total operation cost in any power plant. In order to keep electricity tariff as low as possible, fuel cost which carries the highest percentage of the total operating cost has to be minimized. Economic operation of the power plants can be achieved through economic load dispatch and unit commitment. Lagrange relaxation is one of the best solutions in solving economic load dispatch problem because it is more efficient and easier than other methods. This approach has been implemented to minimize the fuel cost of generating electricity while taking into account some technical constraints.
The aim of this research work is to carry out a fault analys is of 33KV distribution system using... more The aim of this research work is to carry out a fault analys is of 33KV distribution system using Ekiti state as a case study. Based on the available statistical data, Ekiti State is reported to suffer from severe shortages of electric power due to dilapidated and outdated electrical power infrastructures. In this research work, electric power infrastructure and energy availability in Ekiti State is studied since the state is one of the principal economic and political hubs of Nigeria. During the study, the conditions of all relevant electrical facilities for distributing power at the 33KV level were assessed. Power availability in the 33/11kv injection stations in the state was considered by collecting data about energy supplied, faults and other outages. The outcome of the research indicated that the probability of having 2 consecutive hours of power was less than 25% in either year for most of the feeders indicating a very poor situation for consumers, especially small scale indu...
The prevailing treat to lives and property by the usage of gas for cooking, etc, and the rapidly ... more The prevailing treat to lives and property by the usage of gas for cooking, etc, and the rapidly increasing evolution in new technologies worldwide, a novel approach utilizing dual communication network providers is applied to alert users in the event of leakage of Liquefied Petroleum Gas (LPG). In this work, a prototype gas leakage detector, based on dedicated Peripheral Interface Controller (PIC), sensitive MQ-6 gas sensor, GSM/GPRS SIM900 and discrete components is developed and tested. Glo and MTN network service providers were selected for the design. Both indoor and laboratory tests were conducted where the results indicate gas concentration levels of 372 ppm to 255 ppm were measured to display a message on Liquid Crystal Display (LCD) and trigger audio alarm at instances of 2.42 secs and 8.35 secs in locations of 5 cm and 30 cm away from gas source respectively. Finally, the viability test proved satisfactory as it indicates that whenever a particular network fails, the seco...
Power factor correction is a vital tool for maintaining the terminal voltage of an electrical sys... more Power factor correction is a vital tool for maintaining the terminal voltage of an electrical system that operates at low power factor since any sudden change in power factor and current affect the terminal voltage of the system. If the power factor of any electrical system is improved to unity with the application of capacitors, the current of the same value of the power to be supplied is reduced to a minimum. This results in total reduction of power losses, terminal voltage drop and sizes of transformers, alternators, cables and switchgears. In order to encourage the large electricity end users to keep their loads at a unity or near unity power, electricity tariff is structured in such a way to depend on the consumers’ power factor. Power factor correction will result in reduction of maximum demand (KVA or KW) and affect the annual saving over the maximum demand charge. Also some expenditure will be incurred annually in the form of the interest and depreciation made over the power...
Abstract This article describes the implementation of a Bluetooth technology and an android appli... more Abstract This article describes the implementation of a Bluetooth technology and an android application with voice prompts based home-automated system using an Arduino microcontroller. The system is aimed at designing an automated appliance control that is user-friendly and convenient to use. The design comprised an Arduino ATMEGA328 microcontroller board, Bluetooth module (HC-06), and an android application (MIT App Inventor 2). The Arduino controls any connected component and was programmed with C++ programming language by using Integrated Development Environment (IDE). Relays and Triacs are used for the switching mechanism. Once the system is connected, the user controls the electrical appliances connected to the home-automated system, which can also be controlled using voice prompt with the help of a Google assistant inbuilt with the android smartphone. The system switches the home appliances ON and OFF using the android app, Bluetooth module, and voiced prompt. It can also be timed to switch off appliances for a pre-time of 12 h, thus making the application easy and convenient to operate via a smartphone.
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
One of the prominent techniques used to mitigate the electromagnetic energy radiation (which caus... more One of the prominent techniques used to mitigate the electromagnetic energy radiation (which causes interference in the signal transmission) is smart antenna. The smart antenna system remains the noticeable dynamic approach employed to develop the power output of the signal of interest in a specified direction and reduce the interfering signal power in unnecessary direction. Smart antenna system comprises of an arrangement of multiple numbers of antenna elements whose signals are logically connected to utilize the two-dimensional (2-D) domain and enhance the efficiency of a wireless communication system. This research work emphasis on how the smart antenna can adaptively optimize the signal to noise ratio (SNR) of multiple antenna arrays in an arbitrary location and a specified direction of signal. Adaptive array technique using Applebaum array algorithm is considered in this work. The method is practical in the implementation, used in interference rejection. Phase arrays cannot pro...
DOI: http://dx.doi.org/10.24018/ejece.2021.5.3.328 Vol 5 | Issue 3 | June 2021 60 Abstract — Rece... more DOI: http://dx.doi.org/10.24018/ejece.2021.5.3.328 Vol 5 | Issue 3 | June 2021 60 Abstract — Recent technological advancements have made things in an efficient manner. This paper presents the overall design of Dual-tone multi-frequency (DTMF) signaling with little cost and establishes a new pattern for home automation developments. The benefits of a DTMF system is that it may be controlled remotely from afar, effectively saves energy, minimizes human stress. One of the most developing trends in home appliance control innovation is DTMF-based home automation technology using Arduino. In order to make this project work, an Arduino Uno was used. This is primarily about the ATmega328 microcontroller (MCU). It comprises of 14 digital output/input pins, analogue inputs of about 6 ports, a USB port for programming the onboard microcontroller, an ICSP header, a power jack, and a reset button. DTMF can be realized using numerous approaches for example, Discrete Fourier Transform (DFT), and G...
This research work seeks to analyse the performance of a two-phase induction motor using dynamic ... more This research work seeks to analyse the performance of a two-phase induction motor using dynamic model based on MATLAB. The 4 th order Runge-Kutta was used for the solution of this dynamic model. The modelling and simulation will be strictly for Two-phase induction motors used in low power applications. Measured and simulated results would be discussed and correct mitigation techniques would also be recommended .Future work within the scope of this research work would also be discussed. With the growing concerns about low-cost operation and efficient use of energy, Two-Phase induction motors have gained interest in low-power applications, especially for domestic or commercial applications where a three-phase power supply is not available. This result from this research work would help improve the design of two-phase induction motor used in the applications above.
Abstract This article describes the implementation of a Bluetooth technology and an android appli... more Abstract This article describes the implementation of a Bluetooth technology and an android application with voice prompts based home-automated system using an Arduino microcontroller. The system is aimed at designing an automated appliance control that is user-friendly and convenient to use. The design comprised an Arduino ATMEGA328 microcontroller board, Bluetooth module (HC-06), and an android application (MIT App Inventor 2). The Arduino controls any connected component and was programmed with C++ programming language by using Integrated Development Environment (IDE). Relays and Triacs are used for the switching mechanism. Once the system is connected, the user controls the electrical appliances connected to the home-automated system, which can also be controlled using voice prompt with the help of a Google assistant inbuilt with the android smartphone. The system switches the home appliances ON and OFF using the android app, Bluetooth module, and voiced prompt. It can also be timed to switch off appliances for a pre-time of 12 h, thus making the application easy and convenient to operate via a smartphone.
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
The rapid advancement in wireless communications systems and the narrow bandwidth accessibility i... more The rapid advancement in wireless communications systems and the narrow bandwidth accessibility is a challenging work in the communication field. One possible suggestion for the bandwidth restriction is to use smart antenna systems. The preferred bandwidth is one of the decisive considerations used to adopt upon an antenna. For example, various antenna types have very narrow bandwidths and this is unsuitable for wideband operation. A theoretical and practical analysis has been analyzed on the effect of smart antenna dimension with figure of merit such as bandwidth in this research work. Smart antenna has been analyzed as effective counter methods to improve channel bandwidth and capacity in addition to reduce the channel interference. The analyzed process proffers the wide bandwidth, less electromagnetic interruption, phase control free of frequency and small propagation loss. The modeling and simulation of smart antenna with improved bandwidth between the lowest frequency FL = 0.5 ...
The production cost of electricity is a very important index in national development. Electricity... more The production cost of electricity is a very important index in national development. Electricity tariff depends on the fuel cost which carries the highest percentage of the total operation cost in any power plant. In order to keep electricity tariff as low as possible, fuel cost which carries the highest percentage of the total operating cost has to be min imized. Economic operation of the power plants can be achieved through economic load dispatch and unit commit ment. Lagrange relaxation is one of the best solutions in solving economic load dispatch problem because it is more efficient and easier than other methods. This approach has been implemented to minimize the fuel cost of generating electricity while taking into account some technical constraints.
The International Journal on Communications Antenna and Propagation, 2017
In wireless communication systems, smart antenna is designed to improve radiation in one directio... more In wireless communication systems, smart antenna is designed to improve radiation in one direction and null out interference in other direction. This can be realized by increasing the directivity of the antenna element which leads to gain in a specific direction. At high frequency, transmission of signals is characterized with impairments. Mitigation of these signal impairments can be accomplished through the improvement of directivity and gain of smart antenna system at terahertz frequency range. This research work proposed and examined smart/ adaptive antennas array at terahertz (THz) frequency range, which can be applied for far distance communications and can be extended to the far-field region of antenna. The adaptive/smart antenna array is appropriately operational in the range of 300 GHz to 3 THz for wireless local area network (WLAN) applications that uses high-frequency (HF) radio waves. The efficiency of this adaptive array antennas system has been optimized and simulated ...
Reliability is an analytical tool used to measure the ability of a power system to perform a func... more Reliability is an analytical tool used to measure the ability of a power system to perform a function when required for a specified period of time in particular environment and conditions. Reliability analysis is a vital tool for critical identification of sensitive components of the electrical power systems that need more attention for better improvement and at the same time to increase the system availability. The aim of this research work is to carry out reliability assessment of electrical power system by using some reliability indicators. Hence this work presents a research on reliability assessment of 330/132KV substation by using Ayede 330/132KV substation as a case study. Ayede 330/132KV substation feeds six different 132/33KV substations, such as Jericho, Ijebu ode, Ibadan North, Sagamu, Ayede and Iseyin. In this study different parameters that determined optimum operation of a power system such as SAIDI, CAIDI, SAIFI, CAIFI, CIII, MAIFI and ASAI were deduced.
The design of smart antenna using waveguide-fed pyramidal horn antenna gives a better system perf... more The design of smart antenna using waveguide-fed pyramidal horn antenna gives a better system performance of directional radiation beam pattern with a high gain and wide impedance bandwidth. At higher frequencies, the effects of interference cannot be overemphasized as the quality of signal is reduced significantly. To overcome this drawback on the propagation of signal, smart antenna offers the mitigation of interference on signal transmission and reception as it combines its different elements and digital signal processing capacity. This research work presents an innovative approach of designing smart antenna using a waveguide-fed pyramidal horn antenna for wireless communication systems. For the optimum performance of smart antenna at higher bandwidth for this research work, waveguide-fed pyramidal horn antenna possessed unique electrical features with centre frequency of 30 GHz, distribution taper of all side-lobes equal (Dolph-Chebychev), side-lobe level of 14 dBi, orientation (...
In the present scenario the challenge is to transmit the data at rate 10 gigabits per second for ... more In the present scenario the challenge is to transmit the data at rate 10 gigabits per second for the terahertz frequency regime. One prominent technique that can proffer solution for the efficient transmission at this frequency wideband is Smart Antenna. This research work proposed and examined smart antennas also known as adaptive array antennas at terahertz frequency range. The prototype antenna is suitably operating in the range of 300 GHz to 3 THz for wireless local area network applications that uses high-frequency radio waves. The antenna has been put together on a Rogers RT Duroid dielectric substrate of Svensson/Djordjevic loss type with dielectric permittivity of εr = 2.33, loss factor/tangent (tan δ) of 1.2 * 10-3, relative permeability (μr) = 1 and the thickness of h = 0.80 mm. Rogers RT Duroid dielectric substrate has been taken as our substrate due to the low dielectric loss which make it suitable for high-frequency laminate over the FR-4 substrate. The antenna receives...
The consideration of smart antenna system using an 8×8 planar phased-array antenna offers the syn... more The consideration of smart antenna system using an 8×8 planar phased-array antenna offers the synthesis of a needed beam pattern which is not obtainable with a single patch antenna element. In this research work, a high performance planar phased-array antenna has been designed using an 8×8 square grid of z-controlled antenna monopoles with a length of 0.482λ. The considered element spacing is 0.315λ and the average directivity of 22.0 dBi. The uniform current distributions and binomial current distribution has been used for the design. To minimize the side lobe level characteristic to a lower one of -20 dB with reference to the main beam, the binomial current distribution is preferred for the work. This approach for the synthesis of antenna's beam pattern reduces multiple interferences by installing nulls in the course of signals interference and putting the central beam pattern in the track of the targeted signals in phase and amplitude regulation.
Oluwole, A. S., Odekunle, O. P., & Olubakinde, E. (2021). Applications and Recent Development of DTMF Based Technology in Home Automation. European Journal of Electrical Engineering and Computer Science, 5(3), 60-67., 2021
Recent technological advancements have made things in an efficient manner. This paper presents th... more Recent technological advancements have made things in an efficient manner. This paper presents the overall design of Dual-tone multi-frequency (DTMF) signaling with little cost and establishes a new pattern for home automation developments. The benefits of a DTMF system is that it may be controlled remotely from afar, effectively saves energy, minimizes human stress. One of the most developing trends in home appliance control innovation is DTMF-based home automation technology using Arduino. In order to make this project work, an Arduino Uno was used. This is primarily about the ATmega328 microcontroller (MCU). It comprises of 14 digital output/input pins, analogue inputs of about 6 ports, a USB port for programming the onboard microcontroller, an ICSP header, a power jack, and a reset button. DTMF can be realized using numerous approaches for example, Discrete Fourier Transform (DFT), and Genetic Algorithm (GA). These techniques are generally analyzed using MATLAB, GUI, and FPGAs. ...
The production cost of electricity is a very important index in national development. Electricity... more The production cost of electricity is a very important index in national development. Electricity tariff depends on the fuel cost which carries the highest percentage of the total operation cost in any power plant. In order to keep electricity tariff as low as possible, fuel cost which carries the highest percentage of the total operating cost has to be minimized. Economic operation of the power plants can be achieved through economic load dispatch and unit commitment. Lagrange relaxation is one of the best solutions in solving economic load dispatch problem because it is more efficient and easier than other methods. This approach has been implemented to minimize the fuel cost of generating electricity while taking into account some technical constraints.
The aim of this research work is to carry out a fault analys is of 33KV distribution system using... more The aim of this research work is to carry out a fault analys is of 33KV distribution system using Ekiti state as a case study. Based on the available statistical data, Ekiti State is reported to suffer from severe shortages of electric power due to dilapidated and outdated electrical power infrastructures. In this research work, electric power infrastructure and energy availability in Ekiti State is studied since the state is one of the principal economic and political hubs of Nigeria. During the study, the conditions of all relevant electrical facilities for distributing power at the 33KV level were assessed. Power availability in the 33/11kv injection stations in the state was considered by collecting data about energy supplied, faults and other outages. The outcome of the research indicated that the probability of having 2 consecutive hours of power was less than 25% in either year for most of the feeders indicating a very poor situation for consumers, especially small scale indu...
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