Examensarbeten för kandidatexamen

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https://odr.chalmers.se/handle/20.500.12380/39

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Längdskidor på vatten, prototypframtagning av en produkt som ska imitera längdskidåkning på vatten
Andersson, Victor; Arvidsson, Måns; Márkus-Johansson, Oliver; Sigbjörnsson, Aina; Åseskog, Agnes; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Isaksson , Ola; Isaksson, Ola
This project aimed to develop a prototype to simulate cross-country skiing on water, thereby enabling a new way of skiing. Through an iterative product development approach, multiple prototypes were tested and evaluated to achieve an authentic skiing experience by engaging similar muscle groups and replicating the technique used in skiing on snow. Various concepts for hull shape, propulsion, and stability were explored, leading to a wide range of ideas and possibilities. Decisions were made to exclude electric propulsion, resulting in a prototype consisting solely of skis and poles. Valuable insights were obtained from various external sources, including manufacturers and professors in fluid mechanics.With support from the team and perseverance, the initial idea evolved into a full-scale prototype made of carbon fiber. Despite encountering challenges due to ambitious timelines, many ideas with potential remain unexplored, which future stakeholders can consider
Effektiv närvarodetektering och närvaroräkning för optimerad lokalanvändning
Asplund, Gustaf; Dahlström, Ella; Eriksson, Oscar; Hakeskog, Lilly; Nordin, Isak; Olsson, Hugo; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Almefelt, Lars; Hulthén, Erik
This project involves creating a system for occupancy measurement and people counting. The system has been tested in group study rooms at Chalmers University of Technology. A customer survey has been conducted among Chalmers students. In the survey, they rated the difficulty of finding group study rooms and what technical solutions they are most comfortable with. In addition, they were asked what medium that they would prefere to receive data regarding availability of group study rooms. The project was carried out iteratively with two different testing periods using different sensors. An occupancy sensor was created containing a PIR sensor HC-SR301 and a radar unit Micradar R60AMP1. Since the Micradar radar unit could only measure up to two people in a room, a second prototype was developed using the same PIR sensor and another radar unit – MinewSemi MS72SF1. During the second testing period, up to 6 people could be counted in a group room using the radar unit but more have not been tested. The occupancy sensors were connected to a Raspberry Pi Pico W microprocessor with custom embedded software. A Raspberry Pi 3A was used to provide the microprocessors with wireless internet, and a housing was created using CAD and 3D printing to mount the sensors in the group rooms. A backend structure for data management and a web application that presents data from the group rooms were also created. The web application thus shows students which group rooms are available or in use, as well as displaying statistics on usage over time. The statistics gathered show that the radar sensors are superior to the PIR-sensor in people counting and occupancy measurement
Liveinformation om lediga grupprum
Bjerhem Aronsson, Felix; Cronvall, Oscar; Enström, Albin; Johannesson , Moa; Karlsson, Tim; Åkerfeldt, Lukas; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Almefelt, Lars; Hulthén, Erik
This report discusses the work on creating a system for counting people in individual study rooms at Chalmers University of Technology, and how to present the results effectively. Being able to easily see which study rooms are available is something Chalmers students consider important, and the university wants to derive insights based on the use of study rooms on its premises. The project utilized a pre-constructed mmWave sensor for counting, which was communicating with a gateway that in turn is connected to a server. Data was obtained from the server using an API and finally presented through a website developed by the project group. The work ultimately resulted in a system capable of determining whether there is a person in the room or not, but it has more difficulty accurately counting the number of people in the room within an acceptable margin. The product works well in that it allows users to easily see which study rooms are available or occupied through the website. The resulting data visualizations aimed at the university are presented in various ways through key figures, tables, and graphs in a predefined resolution.
Designing a Sustainable Island for Electric Boat Charging
Norström Berdenius, Carl; Greisz, Olivia; Parmalm, Albin; Skoglund, Elina; Stake, Märtha; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Almefelt, Lars; Ehnberg, Jimmy; Enelund, Mikael; Wessman, Björn; Lundin, Niklas
The increase of electric boats has highlighted the necessity for marine charging facilities. With numerous marinas lacking the requisite infrastructure to support a significant influx of electric boats, there is a pressing demand for charging solutions. This project featured the iterative process of creating an self-sustainable island that could facilitate the charging needs of electric boats, as well as attract other visitors. This required extensive research of solutions regarding energy, waste and water management, different facilities that could generate profit and costs related to all parts of the island. The project involved a comprehensive concept development process, research over current technology and how it could me implemented. Creative methods were used to generate innovative ideas for the modular island. Through the iterative process, a final concept wad defined to meet the demands of Volvo Penta and electrical boat owners. Utilizing CAD models and 3D printing, the team was able to visualize the final concept, ensuring the design could be implemented. The final island represented a complete off-grid solution for energy supply, water management and waste management, meaning it was independent of external energy sources, water supply and waste management systems
Solceller som byggnadstak
Alveheim, Hannes; Johansen, Linnéa; Karlsson, Evelina; Lewerth , Carl; Sleibi, Lynne; Ström, Gustaf; Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap; Chalmers University of Technology / Department of Industrial and Materials Science; Almefelt, Lars
This report explores the potential and implementation of integrated solar cell solutions in roofing, with a specific focus on Swedish villas. Against the backdrop of growing interest in renewable energy and with aesthetic considerations, this study aims to develop solar roof concepts that are not only functional but also visually appealing. The main goal of the concepts was to enhance the aesthetic and functional aspects of solar roofs compared to traditional solar panel roofing solutions. The main goals of the project are to study the possibilities of solar cell integrated roofs and translate them into concepts and then evaluate them according to the interests of the identified stakeholders. The ultimate goal is to then compare the proposed concepts with the solution of today. The development process consisted of identifying stakeholders and their needs, generating concepts through brainstorming and later processing them through evaluation and elimination based on several criteria. The derived concepts were part of three seperate categories; integrated roof cladding, environmentally adaptive solar modules and solely solar cell solutions. The results indicate that integrated solar solutions can offer significant advantages, such as increased energy efficiency and improved visuals on the building. With promising new technologies such as thin-film solar cells, the possibilities that the future may provide prove to be exciting. The report also highlights the importance of further research and development in the field, especially regarding system integration, to further improve the performance, durability, lifespan and aesthetics of solar roofs. Future studies should focus on further developing concepts and installation techniques as well as exploring new materials that can enhance the durability and reduce the environmental impact of solar roofs

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