Browsing by Author "Azad, AKM Abdul Malek"

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A multitasking PC based robotic ARM manipulator control system in RT-Linux environment
(BRAC University, 2010-04) Md. Adnan Al Moshi; Islam, Md. Eftakhairul; Cynthia, Salwa Salam; Azad, AKM Abdul Malek
Automation in industries helps in achieving the target of quality standardization and process visibility. In overseas the industries are automated using different robots which work efficiently. But in a developing country like ours, we can not afford to import robots from overseas. Again our country is not technically sound enough to produce robots commercially in large scale for industrial usage. Considering these aspects we have prepared a robotic arm manipulator which work under RT-Linux environment. This step will introduce automation in our country. In the RT-Linux environment two or more robotic arms can be operated simultaneously. This environment is established in such a way that multiple tasks can be done at the same time. This is efficient as well as cost effective. In our project the robotic arms are able to pick and place objects controlled by two bipolar stepper motors and a DC motor (for the gripper) for each robotic arm. The motor will be operated in an open loop (without feedback) system. The operation of the Stepper Motor is controlled using RT-Linux to minimize the real-time error (jitter). From one computer we can operate all the manipulators. Stepper motors are used because it gives the steps so precisely. The theoretical results are confirmed with practical application.
Data processing through biosensors and development of simulation software in windows & RT-Linux
(BRAC University, 4/5/2012) Razin, Kazi Mohammed; Hossain, Jonayet; Oyon, Mahmudul Hasan; Azad, AKM Abdul Malek
Solving real life problems are often very time demanding due to the high sensitivity of the system such as biomedical devices which are actually used to get data to represent the critical state of a human or animal body. There are some important indicators of human health those include ECG, SPO2, Temperature and Blood pressure. By monitoring those indicators the current state of any human health is possible to determine and hence necessary steps can be taken. Therefore the Real Time monitoring of the health indicators signals is very important in Biomedical Engineering. In our approach we have experimentally proved and did the signal processing of important biomedical signals using Windows and Linux OS. For Linux we have used Red hat enterprise Linux 4 and RT Linux which are soft real time and hard real time operating system respectively. The data acquisition system of the signals has been done through a data acquisition Card and interfacing of the system to computer has been done both in Windows and Linux. We did it to make a comparison between the time dependencies of signals in different operating system under multitasking environment. So our objectives are to make a Real time signal processing systems and software for biomedical devices as well as to compare the time delay of the measurement system under 2 operating systems. We approached it by choosing three health indicators signals which are ECG, SPO2 and Temperature.
Design & implementation of soil quality measurement system to determine fertilizer requirement & suitable crop for farmers
(BRAC University, 2023-09) Tonmoy, Farhan Tanjim; Asad, Jiad Bin; Saha, Gourab; Suvo, Shabbir Hoshen; Azad, AKM Abdul Malek
"The process of soil degradation is primarily associated with the excessive application of chemicals and unregulated practices in crop production, resulting in a notable reduction in the availability of essential macro nutrients within the soil which then leads to decrease in production of crops. The present research work examines the viability of implementing a full system for evaluating soil health, enhancing soil quality, and determining appropriate crop choices based on the current state of soil health. This research work focuses on the conception and implementation of a wireless and portable system for measuring soil quality. The primary objective of this study is to develop a system that not only assesses the soil's condition but also provides recommendations for optimal fertilizer application and suggests the most suitable crops based on the specific soil conditions. This study aims to make a valuable contribution to the field of sustainable agricultural practices and the mitigation of soil degradation challenges. By thoroughly examining and addressing these various aspects, the study aims to provide insights and potential solutions to these significant challenges."
Design and animation of automated alternative solar water heater system at the BRAC University roof top by using solid works and implement the controller using GAL technology
(BRAC University, 2012-05) Chowdhury, Ahasanul Haque; Azad, AKM Abdul Malek
The objective of the thesis is to design the “alternative Solar Water Heater with Automated control system”, which is developed by CARG at the roof top UB building, using “SolidWorks 2012” software. Initially, I made a 2D model of the roof top project in SolidWorks. The sketch will consist of geometry and dimensions to define the size and location of the system. The dimensions in the sketch can be controlled independently. Finally, that drawing will be created of the designed model. Views are automatically generated from the SolidWorks model (3D) and notes, dimensions and tolerance can be easily added to the drawing as needed.
Design and implementation of a crop health monitoring system
(BRAC University, 2023) Kabir, Mashrur; Roy, Pranta; Labonnya, Sheikh Sabikun Naher; Hussain, Ashrar Ibne; Islam, Md. Ferdous; Azad, AKM Abdul Malek; Rahman, Touhidur; Imran, Mohammad Tushar
This scholarly work aims to present an innovative Quadcopter Drone Crop Monitoring System that addresses the challenges faced by farmers in monitoring and managing their crops. The system integrates quadcopter drones, remote sensing devices, and data analytics software to provide detailed data on crop health, enabling farmers to make informed decisions on the various crop (leaf) diseases. The Quadcopter Drone Crop Monitoring System utilizes a state- of-the-art quadcopter drone equipped with a high-resolution camera. Essentially such a device would capture detailed images of crops from numerous angles, which are then transmitted to a ground station. The data is then processed using advanced algorithms (CNN) that generate detailed reports on crop diseases. The Quadcopter Drone Crop Monitoring System offers several advantages over traditional crop monitoring methods, including faster and more accurate data collection, reduced labor costs, and improved crop management practices. The data on crop (leaf) diseases enable farmers to make timely and informed decisions, leading to improved yields, reduced costs, and increased sustainability. The Quadcopter Drone Crop Monitoring System is an innovative solution to modernize agriculture and optimize crop production in a sustainable manner. This technology-driven solution has the potential to transform the agricultural sector by providing farmers with an efficient and effective tool for monitoring and managing their crops. It is envisioned that this technology will lead to a more sustainable and profitable future for the agricultural industry.
Design, implementation and performance of a controller for uninterruptible solar hot water system
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011) Hasan, Mohammed A.; Arifin, K.; Rahman, Arifur K M Zillur; Azad, AKM Abdul Malek
This paper describes a novel design and implementation of an automatic control system for solar hot water system in both domestic and industrial purpose. The project consists of one 150 liters evacuated tube solar collector, 300 liter storage tank, solenoid valves and an electric water heater. The objective was to implement an embedded system to control how and from which source (collector or electric heater) the hot water is been provided to the user end. The whole system is solely controlled by the controller which decides how the water should flow to the user end. The controller mainly consists of ATmega32 for central processing, LCD for displaying the level of water inside the tanks, segment displays for showing the temperature inside the tank, a regulator for setting the outlet temperature and a button for confirming the set temperature. The controller is powered by a DC power unit.
Designing smart charge controller for the solar battery charging station (SBCS)
(BRAC University, 9/4/2012) Ferdausi, Marufa; Azad, AKM Abdul Malek
Development of a Brain-Computer Interface (BCI) for person with disabilities to control their wheelchair using brain waves along with health monitoring system
(BRAC University, 2022-12) Rafid, Sk Tahmed Salim; Miazee, Redwan Ahmed; Byzid, Md. Kutubuddin; Anika, Afsana Anjum; Azad, AKM Abdul Malek
Humanity’s endeavor to learn the way the human brain works has been exponentially fastened through the means of Brain Computer Interface (BCI) technology. It has helped in mapping different electrical activities in the brain to different actions thus giving us a simplistic view of understanding human thoughts. Interacting with electric and mechanical systems utilizing such technology is one of its practical applications. This project is an amalgamation of the aforementioned BCI coupled with a motor driver to drive a wheelchair. It additionally provides features to ensure the safety of the patients during movement, and to monitor a patient’s health data remotely through the usage of a mobile application.
Development of biomedical data acquisition system in hard real-time Linux environment
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012) Alam, Marzia Ruman; Azad, AKM Abdul Malek
This paper proposes a data acquisition (DAQ) system for the bio signals which is based on the use of biosensors, signal processing unit, data acquisition card and computing device. The methodologies of developing a biomedical experimental set up for measurement, monitoring, recording bio-signal during animal testing in laboratory is presented. The device will be responsible for getting data through 16 channels. The channels will be connected with the biosensors through which the signals of different biological state (e.g. Electrocardiograph, Blood pressure etc.) of human or animal body will be retrieved. Obtaining the signals from biosensors data acquisition process will be done in a signal processing system and that will convert the resulting samples into numeric values which can be manipulated by the software. The signal data acquisition processing will be accomplished on Hard Real-Time Linux (RT-Linux) environment which will be presented through Graphical User Interface (GUI) developed in non RT-Linux environment. Linking between hard real time and non real time Linux will be done through Inter Process Communication (IPC) between two kernels.
Environment friendly solar car
(BRAC University, 2010-04) Majumder, Md. Golam Shahriar; Alam, Md. Touhidul; Zubair, Md. Ashraf Uddin Ahmed; Azad, AKM Abdul Malek
Now-a-days, dealers of natural resources like fuel, coal etc. are facing a hard time to keep pace with the increasing demand. Therefore, to carry out this demand it is quite necessary to make a new exploration of natural resource of energy and power. Therefore sunlight is now-a-days considered to be a source of energy which is implemented in various day to day applications. Solar energy is being used to produce electricity through sunlight. With the help of this technology we aim to make solar energy powered car in our project. The main component to build a solar car is the solar panel. The solar cells collect a portion of the sun’s energy and store it into the batteries of the solar car. Before that happens, power trackers converts the energy collected from the solar array to the proper system voltage, so that the batteries and the motor can use it. After the energy is stored in the batteries, it is available for use by the motor & motor controller to drive the car. We are going to use two set of batteries; one of which will get the electrical energy from the panel to drive the motor and another will be used as a back-up source of energy which will provide required power when there is no sunlight. A microcontroller can be used in this purpose which can switch to the fully recharged battery when it senses that another battery is empty or not providing enough power to drive the motor. Again, we used a complete circuitry to solve the problem of voltage fluctuation due to movement of the sun, earth or cloud etc. We used a voltage comparator, a relay circuit for and a transistor along with a diode for this purpose. Comparator compares the voltage of solar panel and the battery and then it provides the higher voltage to the transistor to activate the relay which provides the required and stable voltage to the car. However, after all these being proceeded, the motor controller adjusts the amount of energy that flows to the motor to correspond to the throttle. The motor uses that energy to drive the wheels. Preliminarily our objective would be to implement our idea on a remote control toy car and afterwards with help of this prototype we can extend our future work on building a actual car powered by the solar energy.
Estimation of open & short circuit fault detected distance in the underground transmission cable using Arduino & GSM module
(BRAC University, 2021-06) Rahman, Md. Rashidur; Ullah, Md. Arafat; Sakib, Nazmul Hasan; Arnab, Johaor Kowsar; Azad, AKM Abdul Malek
The purpose of this paper is to develop an IOT based prototype that can detect both the open and short circuit fault location for underground cables by using an Arduino and GSM module. Identification of Short circuit faults can be done by using the concept of OHM’S law. For this purpose, we use the row scanning technique in a three-phase system that continuously scans the three-phase system. We divide the cable into multiple segments where every segment has a particular known resistance value. Depending on the fault location there will be a change in cable voltage which will be detected by the microcontroller and it will display the fault on the LCD and send an SMS through GSM. For open-circuit fault detection, we use a capacitor for each segment of the cable which has a particular time constant for each capacitor. When an open circuit fault occurs in a particular segment, the time constant will change, which will be detected by the Arduino and display the corresponding fault location.
Feasibility and importance of an automatic controller for solar hot water system
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011) Hasan, Mohammed A.; Rahman, Arifur K M Zillur; Azad, AKM Abdul Malek
Being a developing country, Bangladesh has a very poor condition in terms of generating electricity. Alongside, natural resources like fuel and coal are in limited amount and will not be able to sustain forever. As a result, sustainable energy is starting to gain its popularity in Bangladesh. Being a geographically suitable country for harvesting, solar energy can be a prime source of generating electricity in Bangladesh in a green way. Generating electricity in commercial scale using solar panels can take a few years because of the panels being very expensive. But another way to utilize this energy is by using it to heat up water. Hospitals, industries, households - any kind of infrastructure requires hot water and a lot of electricity and gas is being used up for that. Keeping that in mind, this project for developing an automatic solar hot water system was commenced and completed. Solar hot water systems are also growing in Bangladesh but the automatic controller that we have developed is a new concept here. The controller makes the system user friendly, requires less interaction with humans and provides uninterrupted hot water with least maintenance.
Feasibility study highlighting the benefits of solar power over grid power for classroom loads
(BRAC University, 2013-04) Reza, Sharzana; Patwary, Shadman Sakib; Ahmed, Rashik; Azad, AKM Abdul Malek
Electricity is a very important factor in developing the economy and the standard of living of a country. Bangladesh largely depends on natural gas and hydro power stations to generate major portions of power. The country lacks behind than its expected production capacity. Though many power generation units have been added to the national grid to solve the power crises issue, it’s not yet enough. High demand and increasing need of power have created challenge for the power stations to meet the demand. From that concept of renewable energy such as solar energy, this thesis has aimed to launch a cost effective solar based system in one of the classrooms of the university, UB 20903. Here it’s mainly to run a fixed amount of loads, such as solar dc stand fans and LED lights, by using solar panel connected directly along with national grid using a controller device. This whole system was represented in the form of a prototype, where a 75 watts panel and a power supply representing grid power was used to connect to seven led lights and one dc fans through a controller. And based on this prototype,working and calculations was carried outfor the cost effectiveness and the feasibility of setting up of such project in reality. Use of software like HOMER was also shown for calculation validation. Taking initiative of such project two needs can be fulfilled. First of all is the reduction in the overall cost of huge current bill per year at a satisfactory level which would be a bright finding for BRAC University. Secondly, according to Bangladesh perspective it would be green process that may bring a very highlighting positive result in economic and environmental prospect.
Firehawk: an autonomous firefighting drone with fire-extinguishing ball release mechanism
(BRAC University, 2025-12) Alvi, Atair Rahman; Hamim, Ifrana; Adnan, Faraaz; Chowdhury, Misbahul Azim; Saifullah, Khalid; Azad, AKM Abdul Malek; Avash, Ihteyaz Aqaeed
This project presents a significant advancement in the field of autonomous emergency response systems by addressing the critical challenges associated with rapid fire detection and suppression. The system integrates a combination of environmental sensors, including flame, smoke, and temperature modules, to accurately identify potential fire hazards in real time. Leveraging modern UAV technology, the autonomous drone is equipped with a precision-controlled release mechanism capable of deploying a fire-extinguishing ball directly onto the fire source, enabling quick and targeted suppression without endangering human responders.Using advanced flight control algorithms, GPS navigation, and wireless telemetry communication, the drone ensures seamless data acquisition, autonomous decision-making, and mission execution. Real-time monitoring and alerting allow operators or emergency personnel to receive immediate updates on fire occurrences, improving situational awareness and enabling faster intervention. The system enhances firefighting efficiency by accessing dangerous or unreachable areas, reducing response time, and minimizing property damage. Overall, this project significantly strengthens the capacity for early-stage fire management through intelligent aerial intervention. By combining autonomous navigation, real-time fire detection, and automated suppression, the proposed solution contributes to safer communities, improved emergency response strategies, and a more resilient firefighting infrastructure.
Hardware implementation of the Central Solar Battery Charging Station (CSBCS)
(BRAC University, 9/4/2012) Ahmed, Omaer; Sunny, Syed Md. Musa; Ferdous, Wasefa; Azad, AKM Abdul Malek
Bangladesh is witnessing an increase in solar electricity generation as part of an ambitious plan to boost the provision of power from renewable energy sources. Solar energy is being harnessed and converted to electrical energy via solar panels and then stored in batteries which can then be used to power households and agricultural activities. This project deals with the prototype design of the pilot project , CSBCS or the Central Solar Battery Charging Station with an aim to aid the process of solar electrification in rural areas and take the load off the grid in urban regions. The batteries charged by these stations can also be used to power modified rickshaws that are torque sensor based and electrically assisted. Solar energy is the best form of renewable energy and this prototype project has the motto "Go Green-Save the Planet-work for existence". Hardware implementation of the CSBCS includes charging a 12 volt battery by using 75 watt solar panel providing discrete amount of power at different time periods of the day. This paper gives a full description of how a 12V solar charge controller is modified to be fed with any amount of voltage to give a desired voltage output. The Solar Batteries get charge from the PV cells through the charge controller. Whether charging is complete , midway or beginning ; at the same time the condition of the batteries , whether fully charged or not; all these information will be detected by the controller through the feedback and the pwm(pulse width modulation), will be changed accordingly according to the battery needs for efficient charging.
Hydropace: advancing conventional pacemakers by implementing hydrogel-based electrodes and cardiac health monitoring system
(BRAC University, 2025-09) Sadath, Sheikh Md. Nazmus; Alam, Rafiul; Hossen, Md. Emran; Mohammad, Istiaq; Mahmood, Sk. Zayed; Azad, AKM Abdul Malek; Rafi, Md. Rafiqul Islam; Avash, Ihteyaz Aqaeed
The rising prevalence of cardiac disorders, coupled with the limitations of conventional pacemakers such as rigidity, short lifespan, repeated surgical interventions and risk of complications, have created the need for innovative biomedical devices. This research work examines the feasibility of improving the functionalities of conventional pacemakers by replacing certain traditional methods with novel solutions. This comprises the implementations of hydrogel-based electrodes and sensor heads that integrate flexibility, biocompatibility, and multifunctional sensing capabilities. The proposed design incorporates hydrogel as a soft and conductive medium to enable seamless integration with cardiac tissue, while supporting embedded sensor heads made with hydrogel for ECG, temperature, and biochemical/biomarker level monitoring. The HydroPace system also includes energy harvesting and wireless communication modules to enhance device longevity and minimize the need for invasive replacements. The primary objective of this study is to design and prototype a system that not only maintains effective pacing for patients with arrhythmia but also ensures improved diagnostic accuracy and enhanced patient safety. By addressing both the engineering and biomedical constraints, this research aims to contribute to the advancement of sustainable, accessible, and next-generation cardiac care technologies.
Improvement of efficiency for solar photovoltaic cell application
(BRAC University, 2010-04) Majumder, Khademul Islam; Hasan, Md. Raied; Ahmed, Raquib; Azad, AKM Abdul Malek
The world is using up all the resources to meet the daily demands of energy and it is quite expectable that in the near future we will run out of any naturally occurring ore/mineral/petroleum. As a result, renewable energy solution has achieved a great demand today to save the natural resources and also to tackle the crisis of energy. Solar energy is rapidly gaining its popularity as an important source of renewable energy. But the efficiency of solar panel is a big factor. While the sun keeps following a parabolic path throughout the day, the panels which are used in our country are generally fixed to a pole or the roof of the house and hence, throughout the day, the efficiency decreases significantly. In this thesis, we have constructed a 2 axis solar tracker which can track the sun throughout the day to obtain the maximum efficiency.
IoT based intelligent wireless substation monitoring and controlling system
(Brac University, 2022-11) Khan, Serajul Islam; Abdullah, S.M.Sifat; Alam, Jawad Bin; Das, Pramit; Azad, AKM Abdul Malek; Mohsin, Abu S.M.; Rahman, Md. Mosaddequr
As the advancement of technologies, the automation of substations has become a key concept in the current world. In order to improve the power quality it is necessary to have an idea about the constraints that occurred. As a result, this project proposes an IoT based system for the monitoring, controlling and protection of the system and analysis of data in a simpler cost effective manner. The sensor data is conveniently accessed by any device wirelessly through IoT. It incorporates real time error free data of substation. The remote electrical parameters we focused on this project are voltage, current, temperature and frequency. In this prototype, we have a set of predefined values for the parameters. A relay ensures the protective part and sends alerts to the users during any faults and once the problem is resolved the system works again.
IoT based smart biofloc monitoring and maintenance system
(Brac University, 2022-09) Podder, Saurov; Anoy, Mohammad Fahim Sultan; Ahmed, Tausif; Jesan, Syed Nafew Hasan; Azad, AKM Abdul Malek; Mohsin, Abu S.M.; Rahman, Mosaddequr
Water quality has a great impact on the quality and quantity of fish production, and since Biofloc systems are designed for utilizing fish waste with the help of microorganisms. Hence, water quality monitoring and management (is vital in improving production quality and efficiency of Biofloc technologies). In this project, we developed an internet of things (IoT) system that gathers relevant information of the Biofloc environment with the help of sensors, this data is stored and processed in a cloud server, and relevant actuators are controlled for maintaining a suitable water quality. In addition, a mobile application is developed for providing a real time monitoring system.
Mobile robotic ARM manipulation
(BRAC University, 2010-04) Zaman, Marjana; Haque, Arin; Hafiz, Nafiza; Ali, Sheikh Korban; Azad, AKM Abdul Malek
In this modern era, robotics has brought a revolutionary success in technology. In our thesis, we are going to implement a mobile robotic arm manipulator. The arm manipulator will perform embedded actions using microcontroller. We are going to generalize the definition of manipulability to the case of mobile robotic arm manipulation in our entire project. Through the entire project analysis, this mobile robotic arm will be manipulated with the help of three degrees of freedom. The targeted arm will consist of base, upper arm, forearm and gripper. In this arm manipulator, various joints are going to be constructed using stepper motors, we will be using metal arm structure, and for base movement we are going to use DC motors. Finally the robotic arm manipulator will be able to perform picking, placing and embedded movement.