Research and Develop underwater scooters for diving

MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION THESIS ELECTRONICS AND TELECOMMUNICATION ENGINEERING TECHNOLOGY RESEARCH AND DEVELOP UNDERWATER SCOOTERS FOR DIVING ADVISOR : NGUYEN VU LAN STUDENTS: LE HOANG HOA TRAN QUOC TOAN NGUYEN MINH HUY SKL Ho Chi Minh City, July 2023 MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY OF MECHANICAL ENGINEERING GRADUATION THESIS RESEARCH AND DEVELOP UNDERWATER SCOOTERS FOR DIVING Advisor: NGUYEN VU LAN, Ph.D Students: LE HOANG HOA – 19146122 – 19146CLA1 TRAN QUOC TOAN – 19146090 – 19146CLA2 NGUYEN MINH HUY – 19146006 – 19146CLA2 Course: 2019 – 2023 Ho Chi Minh City, July 2023 TRƯỜNG ĐẠI HỌC SƯ PHẠM KỸ THUẬT TP HCM KHOA CƠ KHÍ CHẾ TẠO MÁY CỘNG HOÀ XÃ HỘI CHỦ NGHĨA VIỆT NAM Độc lập - Tự – Hạnh phúc NHIỆM VỤ ĐỒ ÁN TỐT NGHIỆP Học kỳ / năm học 2022-2023 Giảng viên hướng dẫn: TS Nguyễn Vũ Lân Sinh viên thực hiện: Lê Hồng Hịa MSSV: 19146122 Điện thoại: 0941414910 Sinh viên thực hiện: Trần Quốc Toàn MSSV: 19146090 Điện thoại: 0389556458 Sinh viên thực hiện: Nguyễn Minh Huy MSSV: 19146006 Điện thoại: 0932104760 Đề tài tốt nghiệp: - Mã số đề tài: 22223DT260 - Tên đề tài: Research and develop underwater scooters for diving Các số liệu, tài liệu ban đầu: Kích thước, kết cấu, hình dạng thiết kế Các phương trình động học Sử dụng DC motor Nội dung đồ án: Tính tốn, thiết kế phần cứng phù hợp, thân thiện với người dùng Tính tốn, lựa chọn động phù hợp Thiết kế thân thiện với mơi trường Khả chống thấm nước ăn mịn Các sản phẩm dự kiến Mơ hình phương tiện hỗ trợ bơi nước Báo cáo đồ án Ngày giao đồ án: 15/03/2023 Ngày nộp đồ án: 21/07/2023 Ngơn ngữ trình bày: Bản báo cáo: Trình bày bảo vệ: Tiếng Anh Tiếng Anh   Tiếng Việt Tiếng Việt   TRƯỞNG BỘ MÔN GIẢNG VIÊN HƯỚNG DẪN (Ký, ghi rõ họ tên) (Ký, ghi rõ họ tên)  Được phép bảo vệ …………………………………………… (GVHD ký, ghi rõ họ tên) i DISCLAIMER Project tile: Research and develop underwater scooters for diving Advisor: Nguyen Vu Lan, Ph.D Student name: Le Hoang Hoa Student ID: 19146122 Class: 19146CLA1 Student name: Tran Quoc Toan Student ID: 19146090 Class: 19146CLA2 Student name: Nguyen Minh Huy Student ID: 19146006 Class: 19146CLA2 Graduation thesis submission date: Disclaimer: “We hereby declare that this graduation thesis is the work of our own research and implementation We not copy from any published article without citing the source If there is any violation, we take full responsibility.” Ho Chi Minh City, July 21st, 2023 Student name Student name ii Student name ACKNOWLEDGEMENTS We would like to sincerely thank Professor Nguyen Vu Lan for his guidance, support, and encouragement throughout this journey, valuable feedback and insightful comments on our work His contributions have been invaluable in shaping the direction and improving the quality of our thesis We would like to express our appreciation to our families for their unfailing help and support during our school years Their compassion and empathy have served as a constant source of inspiration and drive Finally, we want to express our gratitude to all of the people who have helped us along the way Their support and suggestions have been crucial in assisting us in achieving this accomplishment We appreciate your encouragement, and support Without your assistance, we could not have succeeded iii ABSTRACT RESEARCH AND DEVELOP UNDERWATER SCOOTERS FOR DIVING This Mechatronics engineering thesis focuses on the development of an underwater scooter, a device that allows individuals to move efficiently underwater The project aims to design and implement a mechatronic system that incorporates propulsion, control, and safety features for the underwater scooter The system includes a direct current motor, a propeller, a battery, and a control mechanism that allows for smooth movement and maneuvering underwater The design process involves the use of computer-aided design software and simulation tools to optimize performance and ensure proper functionality of the system In this project, we used 3D printed plastic materials for the underwater scooter The 3D printed plastic materials are expected to provide the necessary strength and durability required for the underwater scooter to operate effectively Additionally, the design includes a waterproof seal to prevent water from entering the electronic components of the scooter, ensuring its safe and reliable operation The final product is expected to offer a waterproof design, ensuring safety and an enjoyable experience for users while promoting environmental sustainability and conservation iv TABLE OF CONTENTS GRADUATION PROJECT TASK i DISCLAIMER ii ACKNOWLEDGEMENTS iii ABSTRACT iv TABLE OF CONTENTS v LIST OF TABLES ix LIST OF FIGURES, DIAGRAMS x LIST OF ACRONYMS xiii LIST OF SYMBOLS AND PARAMETERS xv CHAPTER 1: INTRODUCTION 1.1 Motivation for the research 1.2 Scientific and practical significance of the topic 1.3 Target 1.4 Subject and scope of the research 1.4.1 Research subject 1.4.2 Research scope 1.5 Research method 1.6 Graduation project structure CHAPTER 2: TOPIC RESEARCH OVERVIEW 2.1 The marine environment 2.2 Diversity of marine ecosystems in Vietnam 2.2.1 Vietnam marine ecosystem 2.2.2 Diversity of marine ecosystems 2.2.3 The economic potential 2.2.4 Dive sites in Vietnam 2.2.5 Types of beach tourism activities 10 2.3 Underwater leisure activities 11 2.3.1 SCUBA diving 11 2.3.2 Snorkeling 12 v 2.3.3 Freediving 12 2.3.4 Sea walker 13 2.4 Underwater navigation 13 2.5 Diving strength 14 2.6 Underwater scooter - the new generation of diving 15 2.6.1 Underwater scooter definition 15 2.6.2 Underwater scooter device 16 2.6.3 Potential of underwater scooter 17 CHAPTER 3: LITERATURE REVIEW 18 3.1 Body surface area 18 3.2 Drag coefficient 18 3.3 Propeller design 22 3.3.1 Propeller anatomy 22 3.3.2 Propeller parameters 22 3.4 Buoyancy 25 3.5 Power and consumption time 25 CHAPTER 4: REQUIREMENTS AND SOLUTIONS 26 4.1 Hull material 26 4.2 Hull designs 28 4.3 Electricity supply 29 4.4 Display screen 30 4.5 Microcontroller 30 4.6 Depth measurement 30 4.7 Waterproof method 31 4.8 Propeller design 31 4.8.1 About Caeses® 32 4.8.2 Applications 32 4.8.3 Popularity of CAESES® in the field 32 4.8.4 How to use CAESES® to design B-Series propeller 32 CHAPTER 5: DESIGN AND IMPLEMENTATION 35 vi 5.1 Block diagram 35 5.1.1 Block listing 35 5.1.2 Block diagram 35 5.1.3 Operational description 35 5.2 Mechanical design 36 5.2.1 Calculation and equipment choosing 36 5.2.2 Drafting 45 5.2.3 Hull design 45 5.3 Electrical design 52 5.3.1 Electrical block 52 5.3.2 Calculation and design 52 5.3.3 PCB design 54 5.4 Control design 54 5.4.1 Overall flow 54 5.4.2 Check GPIO change loop 55 5.4.3 Measure sensor value loop 56 5.4.4 Slowly change PWM value 57 5.5 Design results 58 CHAPTER 6: EXPERIMENTS AND DESIGN ANALYSIS 61 6.1 Establish target specifications 61 6.1.1 Qualitative statements 61 6.1.2 List of metrics 61 6.1.3 Correlation matrix 62 6.1.4 Proposed specifications and experimental methods 63 6.2 Operation experiments 63 6.2.1 Static tests 63 6.2.2 Dynamic tests 64 6.3 Analysis 70 6.3.1 First test 70 6.3.2 Second test 71 vii 6.3.3 Final test 71 6.4 Final specifications 71 CHAPTER 7: CONCLUSION AND RECOMMENDATIONS 73 7.1 Conclusion 73 7.2 Recommendations 73 REFERENCES 74 APPENDIX 1: B-SERIES B.4.40 TAYLOR BP-δ DIAGRAM 76 viii