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HyperGun Handheld Hyperspectral Radiometer

HyperGun Handheld Hyperspectral Radiometer. Design Team 4 Sean Craig Hunter King Sean Roddick Hilary Sears. Outline. Project Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Current Design Budget Project Plan Conclusions. Project Background.

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HyperGun Handheld Hyperspectral Radiometer

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  1. HyperGunHandheld Hyperspectral Radiometer Design Team 4 Sean Craig Hunter King Sean Roddick Hilary Sears

  2. Outline • Project Background • Project Scope • Requirements • Mandatory • Out-of-Scope • Design Concepts • Current Design • Budget • Project Plan • Conclusions Dalhousie University - Department of Mechanical Engineering

  3. Project Background Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Hyperspectral Ocean-Colour Radiometer (HyperOCR). • High-precision measurements of water-leaving spectral radiance. • Calibrated range: 350-800 nm. • Can track environmental or ecological changes • Water quality • Ocean acidification due to CO2 absorption • Algae blooms Dalhousie University - Department of Mechanical Engineering

  4. Project Background Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • How is a measurement taken? • Take measurement of ambient radiance • Take measurement of water-leaving radiance • Data stored on-board for later download Satlantic (2010). HyperGun User Guide. Halifax, NS. Dalhousie University - Department of Mechanical Engineering

  5. Project Scope Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Advance HyperGun from prototype to commercial product. • Design and prototype ergonomic and robust body. • Improve electronics and graphical display. Dalhousie University - Department of Mechanical Engineering

  6. Mandatory Requirements Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • The mandatory requirements for the HyperGun are as follows: Dalhousie University - Department of Mechanical Engineering

  7. Mandatory Requirements Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Dalhousie University - Department of Mechanical Engineering

  8. Out-of-Scope Requirements Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Dalhousie University - Department of Mechanical Engineering

  9. Concept # 1 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Design Features • Ergonomic fore-grip • Integrated handle • Back-mounted LCD screen • Two piece construction with o-ring seal Dalhousie University - Department of Mechanical Engineering

  10. Concept # 1 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Advantages • Fore-grip improves ergonomics. • Integrated handle allows for customization of design. Disadvantages • Back-mounted LCD increases size requirements. • High upfront mold cost - $ 26,474 (ProtoLabs) • Issues in sealing around optics and graphical display. Dalhousie University - Department of Mechanical Engineering

  11. Concept # 2 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Key Components • Fully-articulating LCD screen. • Stock handle with rechargeable battery. • Two Piece Body with o-ring seal Dalhousie University - Department of Mechanical Engineering

  12. Concept # 2 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Advantages • LCD can be viewed from any angle. • Side-mounted screen saves room on body. • Rechargeable battery improvement upon disposable. Disadvantages • Increased cost – $ 27,740 (ProtoLabs) • Complex hinge mechanism • Battery pack adds weight. • Issue in sealing around optics Dalhousie University - Department of Mechanical Engineering

  13. Concept # 3 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • “Cheap-o-Tron” • Represents inexpensive alternative to other concepts. • Machined body vs. Injection molding • Stock handle. Dalhousie University - Department of Mechanical Engineering

  14. Concept # 3 Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Advantages • Inexpensive, especially in low-volume production – $ 1,275 (ProtoLabs) • Easy to seal using o-ring between top and bottom casing. Disadvantages • Back-mounted LCD increases size requirements. • Stock handle requires batteries or battery pack to be contained in body. • Reduced aesthetics. Dalhousie University - Department of Mechanical Engineering

  15. Current Design Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Incorporates sub-assemblies of previous concepts. • l = 230 mm, w = 100 mm, h = 240 mm. Dalhousie University - Department of Mechanical Engineering

  16. Casing Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Comprised of main body and cap. • Houses all electronics. • Sealed using two o-rings. • Main Body • Top Cap Dalhousie University - Department of Mechanical Engineering

  17. Handle Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Handle will provide: • Comfortable, ergonomic grip • Trigger mechanism for operation • Contain power supply Dalhousie University - Department of Mechanical Engineering

  18. Handle Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Three significant ergonomic factors: • Maximum grip diameter • Maximum grip span • Hand breadth • Anthropometrics used to accommodate range of operators Dalhousie University - Department of Mechanical Engineering

  19. Handle Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Example of anthropometric data: Bodyspace: Anthropometry, ergonomics and the design of work (Pheasant, 1996) Dalhousie University - Department of Mechanical Engineering

  20. Electronics Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Digital display • Nadir, zenith, and azimuth angles, GPS position. • Increased display size. • Operating Temperature • -20°C minimum. • Tilt-compensated digital compass • Must be separated from other electronics • That mesh thing Dalhousie University - Department of Mechanical Engineering

  21. Optics Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions • Optic array used by Satlantic in current products. • Tight positional tolerance required. • Sensitive to moisture • Isolated from main compartment. Dalhousie University - Department of Mechanical Engineering

  22. Budget Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Dalhousie University - Department of Mechanical Engineering

  23. Project Plan Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Dalhousie University - Department of Mechanical Engineering

  24. Project Plan Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Dalhousie University - Department of Mechanical Engineering

  25. Conclusions Background Project Scope Requirements Mandatory Out-of-Scope Design Concepts Concept # 1 Concept # 2 Concept # 3 Current Design Casing Handle Electronics Optics Budget Project Plan Conclusions Accomplishments • Reduced weight and size in current designs. • Improved ease of use. • Reduced production costs from earlier concept. Future Work • Design will be reviewed and refined. • Engineering analysis on static o-ring seals. • Testing necessary to determine water ingress protection, ergonomics, and strength of housing. Dalhousie University - Department of Mechanical Engineering

  26. Acknowledgements • Design Team 4 would like to thank the following: Dalhousie University - Department of Mechanical Engineering

  27. Questions Dalhousie University - Department of Mechanical Engineering

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