International Journal of Electrical and Electronic Engineering & Telecommunications, 2021
Rapid depletion of fossil fuel reserves, and concerns over climate change have encouraged power g... more Rapid depletion of fossil fuel reserves, and concerns over climate change have encouraged power generation from sustainable energy based microgrids. And to address the necessity of three-phase inverters in microgrid systems or sustainable-powered households, an Arduino-based three-phase inverter using MOSFET is designed, which converts DC into three-phase AC power. The designed system generates 223V square signals at each phase from a 12V battery through switching of three stages of power MOSFETs using pulse width modulation (PWM) signals at their gates from an Arduino Uno. Each stage of power MOSFETs consists of six transistors making it eighteen in total, which are used to perform the inversion process separately for each three single-phase connections. The system is programmed using an Arduino Uno to generate PWM signals and to keep 120 degrees phase displacement among each phase. Three step-up transformers are coupled at the outputs of MOSFET stages for amplification. The system generates 386.25V of voltage for the three-phase line delivering 0.58A of current using a 60W incandescent bulb at each phase as a load. The design and simulation of the electronic circuit are done by Proteus, and the programming codes are written using Arduino IDE. The designed system is practically contrasted and verified.
International Journal of Engineering Research & Technology (IJERT), Mar 11, 2021
To address the safety of the home or other facility, a microcontroller-based solar-powered anti-t... more To address the safety of the home or other facility, a microcontroller-based solar-powered anti-theft automated security system is developed with arrays of sensors to detect possible intrusion incidents. The designed system produces three kinds of alarms (Buzzer, bi-color LED, and SMS) with a security breach notification through an LCD, based on the data from its interfaced sensors (Motion Sensor, Fire Sensor, and Glass-break Sensor). The microcontroller used to control all aspects of the system is Atmega8. A Light Depended Resistor (LDR) and a Potentiometer (POT) are used to build the Motion Sensor; Temperature Detector LM35 is used as the Fire Sensor; and a sensitive metal strip is used to build a custom Glass-break Sensor. SIM900 (GSM) is used to design an SMS generating system as one of the alarming methods. The designed system is found to be consumed very low power with a 5V supply since when it is ON, the bi-color LED (0.1watt) requires only 0.98µA and 23.5mA of current, and 4.88mW and 117.5mW of power during its state change; and the Buzzer consumes only 0.49mW of power when it is ON. The system is designed with the consideration of incorporating a double-grid power management system, and a dedicated Sun-tracking solar power system is designed to increase its overall efficiency and sustainability. The whole system is designed and verified using 'Proteus 7.7 Professional' and the core part of the system is physically constructed and tested. The programming of the Atmega8 is done using 'Code Vision AVR version 2.5 Professional'.
Without proper moisture in the soil, the process of agriculture can fall in danger, which can lea... more Without proper moisture in the soil, the process of agriculture can fall in danger, which can lead to even an economic collapse for a country. However, overirrigation, under irrigation, or improper water distribution can result in crop damage and reduced productivity, which leads to waste of valuable resources including water. To contribute to addressing this issue, a smart soil moisture balancer is developed based on Internet of Things (IoT), with the help of a soil moisture sensor, water pump control, water flow meter, water level indicator, Arduino Uno, and NodeMCU with built-in Wi-Fi (IEEE 802.11b Direct Sequence) module. The developed system intelligently controls the irrigation pump's switching based on the data collected from a soil moisture sensor. The water level indicator provides data on water availability in the storage, and the water flow meter provides data on water flow rate, which gets transmitted to the ThingSpeak IoT server that stores the data and generates graphs to help with the analysis and making future decisions. A prototype of the developed system is made, verified, and tested to be working perfectly as designed and programmed. In the experiment with the prototype, it is found that the system saves 36.17% of water in case of sandy soil, 37.08% and 32.90% in case of clay soil and loamy soil, respectively. On average, the system saves 35.38% of the water, which in turn can save other intertwined resources like time and energy, keeping the efficiency of the irrigation system.
IEEE 2021 6th International Conference for Convergence in Technology (I2CT), 2021
To address the requirement for three-phase inverters in microgrid systems or sustainable-powered ... more To address the requirement for three-phase inverters in microgrid systems or sustainable-powered industrial facilities, a MOSFET-based three-phase inverter is designed and implemented, which can convert DC power into three-phase AC. The designed system produces 223V square (AC) waves at each phase from a 12V battery (DC) through switching of three stages of power MOSFETs using PWM signals at their gates from an Arduino Uno R3. Each stage of MOSFETs consists of six MOSFETs making it eighteen in total, which are used to perform the inversion process separately for each of three single-phase connections. The system is programmed through the Arduino Uno to generate the PWM signals and to keep 120 degrees phase displacement among each phase. Three center-tapped step-up transformers are used at the outputs of MOSFET stages for signal amplification. Using a 60W incandescent light bulb at each phase as a load, the system produces 386.25V of voltage for three-phase line, delivering 0.58A of current. The design and simulation of the electronic circuit are done by Proteus 8.9 Professional, and the programming codes are written using Arduino IDE. The designed system is practically contrasted and tested.
IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), 2020
Train accidents across the Rail crossings killed many lives as death toll; mainly due to manual g... more Train accidents across the Rail crossings killed many lives as death toll; mainly due to manual gate control and lack of automation. This project presents an intelligent automated railway gate control system which has very High (approx. 100%) accuracy and precision in its operation and demonstrates the necessity for deploying it to counter the accidents across the Rail Crossing Gates (a 100% safety promise). Two IR sensor is used at both far end position to detect the Rail approach toward the Crossing Gate; and, the system is designed to control the gate without any external help or Human intervention. The system required 24 mA and 4.824 A current, and 0.288 W and 58.08 W power, during standby and operating (gate opening or closing) state respectively; and the buzzer consumed only 14.17 mA current as siren and the traffic light signaled the corresponding status to warn traffics on road. 'Proteus ISIS 7.7 professional'-is used for system design and simulation, and 'Code Vision AVR v2.5 professional' to write the program code and burning the microcontroller ATmega16. The built-in oscilloscope is used to plot out the transient response and examining system behavior; which superposed to the objective of this project at very high degree of effectivity.
International Conference on Advances in Electrical Engineering (ICAEE), 2019
A sustainable powered standalone automatic
Solar Tracking System is designed and successfully sim... more A sustainable powered standalone automatic Solar Tracking System is designed and successfully simulated to provide the best alignment of solar panel with position of the sun automatically, to extract an increased efficiency by 40 percent. A very low cost (approx. 5 USD), high precision Solar Tacking Sensor has been designed to rotate the solar panel coupled to the stepper motor rotates 25.70 degree at single step and to tracks the whole 180-degree trace in 8 (eight) steps per day with greater accuracy. Microcontroller (ATmega16) is used as main control unit where its ADC ports are used to interface the Sensor unit and ULN2000A motor driver is used to interface the stepper motor to rotate the solar panel at maximum solar energy angle. The results found from the simulation and analysis shows that, the system required 12.04 mA and 37.163 mA current, and 144.48 mW and 445.956 mW power, during standby and panel rotating mode respectively. The maximum current drawn by the Solar Tracking Sensor is less than 0.5 mA. ‘Proteus ISIS 7.7 professional’ is used for design and simulation, and ‘Code Vision AVR v2.5’ is used to write the program code and burning into the ATmega16 for simulation and analysis.
IEEE/OSA/IAPR International Conference on Informatics, Electronics & Vision (ICIEV), 2012
Microcontrollers and their ever growing applications have changed our everyday experience by its ... more Microcontrollers and their ever growing applications have changed our everyday experience by its feature of programmability, data processing speed and with the consequent intelligences. Through this adventure of invention and engineering, the optoelectronic devices especially the light emitting diodes (LEDs) are used in various fields, such as electronic appliances, optical communication, security, navigation, agro-electronics, etc. To implement these scopes, the LEDs are required to be controlled with a higher degree of precision and flexibility, which is the concern of this work. Towards that various control of a bi-color LED is implemented with a built in alarm system and a liquid crystal display (LCD) for information display; which are automatically controlled by the microcontroller Atmega8. A Light Dependent Resistor (LDR) and a variable resistor (VAR/POT) is used to provide individual input data for comparison, and produces a pre-programmed output to operate the bi-color LED such as LED ON/OFF, LED blinking, LED color changing and alarming. The developed system of a single bi-color LED (0.1-watt) required 0.98µA and 23.5mA current, and 4.88mW and 117.5mW power, during standby and automated blinking sequences (Yellow-Off-Red) respectively; and the buzzer consumed only 0.49mW power for alarming keeping the supply voltage level of 5V. These very low power consumptions and level of power supply voltage lead it to be very compatible with solar power system, and also applicable in local and remote security application. Proteus ISIS 7.7 is used for system design and simulation by which it is proved to be applicable for security purpose. Code Vision AVR is used to write the program code and for burning the microcontroller ATmega8.
Without proper moisture in the soil, the process of agriculture can fall in danger, which can lea... more Without proper moisture in the soil, the process of agriculture can fall in danger, which can lead to even an economic collapse for a country. However, overirrigation, under irrigation, or improper water distribution can result in crop damage and reduced productivity, which leads to waste of valuable resources including water. To contribute to addressing this issue, a smart soil moisture balancer is developed based on Internet of Things (IoT), with the help of a soil moisture sensor, water pump control, water flow meter, water level indicator, Arduino Uno, and NodeMCU with built-in Wi-Fi (IEEE 802.11b Direct Sequence) module. The developed system intelligently controls the irrigation pump's switching based on the data collected from a soil moisture sensor. The water level indicator provides data on water availability in the storage, and the water flow meter provides data on water flow rate, which gets transmitted to the ThingSpeak IoT server that stores the data and generates graphs to help with the analysis and making future decisions. A prototype of the developed system is made, verified, and tested to be working perfectly as designed and programmed. In the experiment with the prototype, it is found that the system saves 36.17% of water in case of sandy soil, 37.08% and 32.90% in case of clay soil and loamy soil, respectively. On average, the system saves 35.38% of the water, which in turn can save other intertwined resources like time and energy, keeping the efficiency of the irrigation system.
International Journal of Electrical and Electronic Engineering & Telecommunications, 2021
Rapid depletion of fossil fuel reserves, and concerns over climate change have encouraged power g... more Rapid depletion of fossil fuel reserves, and concerns over climate change have encouraged power generation from sustainable energy based microgrids. And to address the necessity of three-phase inverters in microgrid systems or sustainable-powered households, an Arduino-based three-phase inverter using MOSFET is designed, which converts DC into three-phase AC power. The designed system generates 223V square signals at each phase from a 12V battery through switching of three stages of power MOSFETs using pulse width modulation (PWM) signals at their gates from an Arduino Uno. Each stage of power MOSFETs consists of six transistors making it eighteen in total, which are used to perform the inversion process separately for each three single-phase connections. The system is programmed using an Arduino Uno to generate PWM signals and to keep 120 degrees phase displacement among each phase. Three step-up transformers are coupled at the outputs of MOSFET stages for amplification. The system generates 386.25V of voltage for the three-phase line delivering 0.58A of current using a 60W incandescent bulb at each phase as a load. The design and simulation of the electronic circuit are done by Proteus, and the programming codes are written using Arduino IDE. The designed system is practically contrasted and verified.
International Journal of Engineering Research & Technology (IJERT), Mar 11, 2021
To address the safety of the home or other facility, a microcontroller-based solar-powered anti-t... more To address the safety of the home or other facility, a microcontroller-based solar-powered anti-theft automated security system is developed with arrays of sensors to detect possible intrusion incidents. The designed system produces three kinds of alarms (Buzzer, bi-color LED, and SMS) with a security breach notification through an LCD, based on the data from its interfaced sensors (Motion Sensor, Fire Sensor, and Glass-break Sensor). The microcontroller used to control all aspects of the system is Atmega8. A Light Depended Resistor (LDR) and a Potentiometer (POT) are used to build the Motion Sensor; Temperature Detector LM35 is used as the Fire Sensor; and a sensitive metal strip is used to build a custom Glass-break Sensor. SIM900 (GSM) is used to design an SMS generating system as one of the alarming methods. The designed system is found to be consumed very low power with a 5V supply since when it is ON, the bi-color LED (0.1watt) requires only 0.98µA and 23.5mA of current, and 4.88mW and 117.5mW of power during its state change; and the Buzzer consumes only 0.49mW of power when it is ON. The system is designed with the consideration of incorporating a double-grid power management system, and a dedicated Sun-tracking solar power system is designed to increase its overall efficiency and sustainability. The whole system is designed and verified using 'Proteus 7.7 Professional' and the core part of the system is physically constructed and tested. The programming of the Atmega8 is done using 'Code Vision AVR version 2.5 Professional'.
Without proper moisture in the soil, the process of agriculture can fall in danger, which can lea... more Without proper moisture in the soil, the process of agriculture can fall in danger, which can lead to even an economic collapse for a country. However, overirrigation, under irrigation, or improper water distribution can result in crop damage and reduced productivity, which leads to waste of valuable resources including water. To contribute to addressing this issue, a smart soil moisture balancer is developed based on Internet of Things (IoT), with the help of a soil moisture sensor, water pump control, water flow meter, water level indicator, Arduino Uno, and NodeMCU with built-in Wi-Fi (IEEE 802.11b Direct Sequence) module. The developed system intelligently controls the irrigation pump's switching based on the data collected from a soil moisture sensor. The water level indicator provides data on water availability in the storage, and the water flow meter provides data on water flow rate, which gets transmitted to the ThingSpeak IoT server that stores the data and generates graphs to help with the analysis and making future decisions. A prototype of the developed system is made, verified, and tested to be working perfectly as designed and programmed. In the experiment with the prototype, it is found that the system saves 36.17% of water in case of sandy soil, 37.08% and 32.90% in case of clay soil and loamy soil, respectively. On average, the system saves 35.38% of the water, which in turn can save other intertwined resources like time and energy, keeping the efficiency of the irrigation system.
IEEE 2021 6th International Conference for Convergence in Technology (I2CT), 2021
To address the requirement for three-phase inverters in microgrid systems or sustainable-powered ... more To address the requirement for three-phase inverters in microgrid systems or sustainable-powered industrial facilities, a MOSFET-based three-phase inverter is designed and implemented, which can convert DC power into three-phase AC. The designed system produces 223V square (AC) waves at each phase from a 12V battery (DC) through switching of three stages of power MOSFETs using PWM signals at their gates from an Arduino Uno R3. Each stage of MOSFETs consists of six MOSFETs making it eighteen in total, which are used to perform the inversion process separately for each of three single-phase connections. The system is programmed through the Arduino Uno to generate the PWM signals and to keep 120 degrees phase displacement among each phase. Three center-tapped step-up transformers are used at the outputs of MOSFET stages for signal amplification. Using a 60W incandescent light bulb at each phase as a load, the system produces 386.25V of voltage for three-phase line, delivering 0.58A of current. The design and simulation of the electronic circuit are done by Proteus 8.9 Professional, and the programming codes are written using Arduino IDE. The designed system is practically contrasted and tested.
IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), 2020
Train accidents across the Rail crossings killed many lives as death toll; mainly due to manual g... more Train accidents across the Rail crossings killed many lives as death toll; mainly due to manual gate control and lack of automation. This project presents an intelligent automated railway gate control system which has very High (approx. 100%) accuracy and precision in its operation and demonstrates the necessity for deploying it to counter the accidents across the Rail Crossing Gates (a 100% safety promise). Two IR sensor is used at both far end position to detect the Rail approach toward the Crossing Gate; and, the system is designed to control the gate without any external help or Human intervention. The system required 24 mA and 4.824 A current, and 0.288 W and 58.08 W power, during standby and operating (gate opening or closing) state respectively; and the buzzer consumed only 14.17 mA current as siren and the traffic light signaled the corresponding status to warn traffics on road. 'Proteus ISIS 7.7 professional'-is used for system design and simulation, and 'Code Vision AVR v2.5 professional' to write the program code and burning the microcontroller ATmega16. The built-in oscilloscope is used to plot out the transient response and examining system behavior; which superposed to the objective of this project at very high degree of effectivity.
International Conference on Advances in Electrical Engineering (ICAEE), 2019
A sustainable powered standalone automatic
Solar Tracking System is designed and successfully sim... more A sustainable powered standalone automatic Solar Tracking System is designed and successfully simulated to provide the best alignment of solar panel with position of the sun automatically, to extract an increased efficiency by 40 percent. A very low cost (approx. 5 USD), high precision Solar Tacking Sensor has been designed to rotate the solar panel coupled to the stepper motor rotates 25.70 degree at single step and to tracks the whole 180-degree trace in 8 (eight) steps per day with greater accuracy. Microcontroller (ATmega16) is used as main control unit where its ADC ports are used to interface the Sensor unit and ULN2000A motor driver is used to interface the stepper motor to rotate the solar panel at maximum solar energy angle. The results found from the simulation and analysis shows that, the system required 12.04 mA and 37.163 mA current, and 144.48 mW and 445.956 mW power, during standby and panel rotating mode respectively. The maximum current drawn by the Solar Tracking Sensor is less than 0.5 mA. ‘Proteus ISIS 7.7 professional’ is used for design and simulation, and ‘Code Vision AVR v2.5’ is used to write the program code and burning into the ATmega16 for simulation and analysis.
IEEE/OSA/IAPR International Conference on Informatics, Electronics & Vision (ICIEV), 2012
Microcontrollers and their ever growing applications have changed our everyday experience by its ... more Microcontrollers and their ever growing applications have changed our everyday experience by its feature of programmability, data processing speed and with the consequent intelligences. Through this adventure of invention and engineering, the optoelectronic devices especially the light emitting diodes (LEDs) are used in various fields, such as electronic appliances, optical communication, security, navigation, agro-electronics, etc. To implement these scopes, the LEDs are required to be controlled with a higher degree of precision and flexibility, which is the concern of this work. Towards that various control of a bi-color LED is implemented with a built in alarm system and a liquid crystal display (LCD) for information display; which are automatically controlled by the microcontroller Atmega8. A Light Dependent Resistor (LDR) and a variable resistor (VAR/POT) is used to provide individual input data for comparison, and produces a pre-programmed output to operate the bi-color LED such as LED ON/OFF, LED blinking, LED color changing and alarming. The developed system of a single bi-color LED (0.1-watt) required 0.98µA and 23.5mA current, and 4.88mW and 117.5mW power, during standby and automated blinking sequences (Yellow-Off-Red) respectively; and the buzzer consumed only 0.49mW power for alarming keeping the supply voltage level of 5V. These very low power consumptions and level of power supply voltage lead it to be very compatible with solar power system, and also applicable in local and remote security application. Proteus ISIS 7.7 is used for system design and simulation by which it is proved to be applicable for security purpose. Code Vision AVR is used to write the program code and for burning the microcontroller ATmega8.
Without proper moisture in the soil, the process of agriculture can fall in danger, which can lea... more Without proper moisture in the soil, the process of agriculture can fall in danger, which can lead to even an economic collapse for a country. However, overirrigation, under irrigation, or improper water distribution can result in crop damage and reduced productivity, which leads to waste of valuable resources including water. To contribute to addressing this issue, a smart soil moisture balancer is developed based on Internet of Things (IoT), with the help of a soil moisture sensor, water pump control, water flow meter, water level indicator, Arduino Uno, and NodeMCU with built-in Wi-Fi (IEEE 802.11b Direct Sequence) module. The developed system intelligently controls the irrigation pump's switching based on the data collected from a soil moisture sensor. The water level indicator provides data on water availability in the storage, and the water flow meter provides data on water flow rate, which gets transmitted to the ThingSpeak IoT server that stores the data and generates graphs to help with the analysis and making future decisions. A prototype of the developed system is made, verified, and tested to be working perfectly as designed and programmed. In the experiment with the prototype, it is found that the system saves 36.17% of water in case of sandy soil, 37.08% and 32.90% in case of clay soil and loamy soil, respectively. On average, the system saves 35.38% of the water, which in turn can save other intertwined resources like time and energy, keeping the efficiency of the irrigation system.
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Articles by Taslim Ahmed
Proceedings by Taslim Ahmed
Solar Tracking System is designed and successfully simulated to provide the best alignment of solar panel with position of the sun automatically, to extract an increased efficiency by 40 percent. A very low cost (approx. 5 USD), high precision Solar Tacking Sensor has been designed to rotate the solar panel coupled to the stepper motor rotates 25.70 degree at single step and to tracks the whole 180-degree trace in 8 (eight) steps per day with greater accuracy. Microcontroller (ATmega16) is used as main control unit where its ADC ports are used to interface the Sensor unit and ULN2000A motor driver is used to interface the stepper motor to rotate the solar panel at maximum solar energy angle. The results found from the simulation and analysis shows that, the system required 12.04 mA and 37.163 mA current, and 144.48 mW and 445.956 mW power, during standby and panel rotating mode respectively. The maximum current drawn by the Solar Tracking Sensor is less than 0.5 mA. ‘Proteus ISIS 7.7 professional’ is used for design and simulation, and ‘Code Vision AVR v2.5’ is used to write the program code and burning into the ATmega16 for simulation and analysis.
Papers by Taslim Ahmed
Solar Tracking System is designed and successfully simulated to provide the best alignment of solar panel with position of the sun automatically, to extract an increased efficiency by 40 percent. A very low cost (approx. 5 USD), high precision Solar Tacking Sensor has been designed to rotate the solar panel coupled to the stepper motor rotates 25.70 degree at single step and to tracks the whole 180-degree trace in 8 (eight) steps per day with greater accuracy. Microcontroller (ATmega16) is used as main control unit where its ADC ports are used to interface the Sensor unit and ULN2000A motor driver is used to interface the stepper motor to rotate the solar panel at maximum solar energy angle. The results found from the simulation and analysis shows that, the system required 12.04 mA and 37.163 mA current, and 144.48 mW and 445.956 mW power, during standby and panel rotating mode respectively. The maximum current drawn by the Solar Tracking Sensor is less than 0.5 mA. ‘Proteus ISIS 7.7 professional’ is used for design and simulation, and ‘Code Vision AVR v2.5’ is used to write the program code and burning into the ATmega16 for simulation and analysis.