http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/89 Sat, 16 May 2026 01:31:40 GMT 2026-05-16T01:31:40Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/861 DEVELOPMENT OF CONTROL SYSTEM FOR AN UNDERWATER ROV (REMOTELY OPERATED VEHICLE) FOR SURVEYING THE UNDERWATER PORTION OF THE SHIP HULL HASSAN, MD.TAMIM; ROHAN, AL SHAREAR HOSSAIN Underwater robotics is a rapidly growing field with applications in various industries such as oil and gas, marine biology, commercial activities like underwater inspection, and military etc. The hardware portion of underwater robotics is crucial for the successful operation of the robots in the harsh underwater environment. There are several types of control systems commonly used in underwater robotics such as Manual Control, Autonomous Control, Tele operation Control, Hybrid Control, Closed-Loop Control .In this project we are using manual control system includes following components: Control Station, Communication System, Sensors, Propulsion Systems, Power Management, PID control algorithm. The main aim of this thesis is to develop a cost-effective, efficient, and reliable control system for underwater robotics which would be able to maneuver the vehicle in six DOF with great ease. For this purpose we are not only focusing on controllability but also designing an efficient hull for serving our purpose and also optimized propeller using CFD technique. Motor were selected on the basis of the simulated thrust generated by propeller in ANSYS fluent software module. The methodology of underwater robotics involves a series of steps and process that are followed in a design, construction and operation. These steps typically include: requirements definition, design, prototype construction, testing and operation. DEVELOPMENT OF CONTROL SYSTEM FOR AN UNDERWATER ROV (REMOTELY OPERATED VEHICLE) FOR SURVEYING THE UNDERWATER PORTION OF THE SHIP HULL Fri, 01 Mar 2024 00:00:00 GMT http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/861 2024-03-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/860 DESIGN OF A GREEN SHIP FOR CONSERVATION OF ENVIRONMENT AT NIKLI HAOR IN BANGLADESH LUBA, TABASSUMA TASNIM; MIM, UMMA HONEY The Nikli Haor, encompassing the areas of Nikli, Mithamain, Austagram, and Itna upazilas in Kishoreganj district, is an extensive wetland. It appears as if numerous small islands and breathtaking natural formations are scattered across the vast water body, resembling isolated islets in a colossal watery expanse. During the rainy season, almost all these areas in the four upazilas of Kishoreganj—Nikli, Mithamain, Austagram, and Itna—are submerged in water, gradually receding as the rainy season concludes. During this time, the raised roads constructed for communication across the haor become visible. Previously, boat communication was prevalent during the rainy season, and people traversed from one place to another on foot during dry periods. However, times have changed, and with the development of infrastructure in these upazilas, all-weather roads and semi-metal roads have been built to facilitate communication. In the dry season, these areas witness rice cultivation and extensive livestock farming. Nevertheless, at present, the excessive use of engine-driven boats for transportation and the disposal of waste materials into the water by boat passengers are causing water pollution. This pollution, along with the impact of agricultural runoff and changes in the reproductive cycle of aquatic organisms, is adversely affecting the aquatic ecosystem. This research focuses on proposing a sustainable and environmentally friendly mode of transportation for travelers in the form of an indigenous amphibious vessel. The vessel aims to address issues related to the disposal of single-use plastics into the water by promoting the use of reusable and biodegradable plastic products. Additionally, the research suggests the implementation of decentralized wastewater treatment systems, hybrid engine systems, and the utilization of solar panels to reduce carbon dioxide emissions. Efforts are made to purify solid and liquid waste through the use of bio-gas production and bio-slurry treatment tanks. The decentralized wastewater treatment system ensures the use of bacteria-free water for various purposes or can be discharged without causing harm to the environment. The use of organic waste from the vessel in the form of bio-slurry can contribute to the production of bio-gas and serve as a nutrient-rich organic fertilizer, which can be sold for agricultural purposes. The adoption of hybrid engine systems and solar panels helps in reducing carbon dioxide emissions, making the model both environmentally sustainable and economically viable. Marine hybrid electric propulsion systems combine combustion engines with battery power to reduce emissions and optimize engine operation. They are suitable for vessels with varying power demands and flexible operating profiles. The successful implementation of this model not only benefits travelers but also makes the entire transportation system environmentally friendly. With the area's soil remaining unpolluted, dry-season activities such as rice cultivation and livestock rearing can thrive, resulting in economic prosperity. This model serves as an economically viable and environmentally sustainable solution. Design of A Green Ship for Conservation of Environment at Nikli Haor in Bangladesh Thu, 01 Feb 2024 00:00:00 GMT http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/860 2024-02-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/859 DESIGN AND CONSTRUCTION OF AN ECONOMICAL UNDERWATER REMOTELY OPERATED VEHICLE (UROV) FOR SURVEYING UNDERWATER PORTION OF SHIP HULL & SHALLOW WATERWAYS EMON, MD. EMAM HOSSAIN; SHARIF AHAD, SHAH MD. NEWAZ Surveying underwater portion of ship hull is time consuming and costly as it is difficult to access and also poses a significant risk to human divers. To mitigate the problem, we have designed and constructed an economical underwater ROV. The ROV is made of lightweight materials to minimize weight and increase buoyancy. It is powered by a lithium-ion battery pack and is controlled by a tethered connection to a surface control unit. A raspberry pi-based control system is used to process, transmit and receive all information in the ROV. Overall eight thrusters are used to control the propulsion system. The ROV is capable to accomplish various rotational and flat movements in the water and it is equipped with a high-definition camera, a lighting system, and various sensors. The robot has the ability to navigate around the hull of the ship and capture high-quality images and data in real-time. The main application of the ROV is not only to inspect the underwater portion of ship hull but also shallow waterways. The ROV was tested in a controlled environment and performed well, providing clear and accurate images of the underwater environment. The ROV is expected to be a valuable tool for surveying ship hulls and shallow waterways, providing a cost-effective and efficient solution for underwater inspections. DESIGN AND CONSTRUCTION OF AN ECONOMICAL UNDERWATER REMOTELY OPERATED VEHICLE (UROV) FOR SURVEYING UNDERWATER PORTION OF SHIP HULL & SHALLOW WATERWAYS Fri, 01 Mar 2024 00:00:00 GMT http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/859 2024-03-01T00:00:00Z http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/858 OPTIMIZATION OF ELECTRICAL ENERGY FROM A SPEED BUMP HASAN, S.M. MEHEDI; AKASH, SHEAKH MD ABDUR RAYHAN The most basic requirement for all living things in the cosmos to survive is energy. In our rapidly changing world, where traditional energy sources are running out and population is growing daily, everything that occurs in the immediate vicinity is a manifestation of energy flow in one of its forms. In a few years, the energy crisis was brought on by the over usage of energy. As a result, in order to solve this issue, we must use methods for making the best use of conventional sources of energy saving. Due to its sustainability, renewability, and accessibility, renewable energy sources are becoming more and more popular these days. The world over, using the kinetic energy of cars going over speed bumps is one of the most cost effective and environmentally beneficial ways to generate electricity. Pollution-free energy recovery system design has grown in importance among researchers. Speed Bump Power Generator (SBPG) is one of several proposed systems that uses traffic movements on streets, boulevards, and highways to generate electricity. An SBPG system translates vertically as a vehicle passes over it. As a result, kinetic energy is created and converted into electrical power. Various SBPG system types are covered in this study. The rack-and-pinion system is the subject of an experimental examination. The results indicate that when an 20 kg mass is added to the SBPG system under consideration, electrical power up to 0.014 W is created. The results’ extrapolation indicates that different cars with varying masses can generate powers of about 106.033 kW as they go over the bumps. This feat may be utilized to charge the accumulator, which can power the traffic lights. The generator runs for 1.01 hours to charge the accumulator’s 6 Ah capacity. OPTIMIZATION OF ELECTRICAL ENERGYFROMASPEEDBUMP Thu, 01 Feb 2024 00:00:00 GMT http://dspace.mist.ac.bd:8080/xmlui/handle/123456789/858 2024-02-01T00:00:00Z