P08456: LED Light for an Underwater ROV

1. Funding Provided by: P08456: LED Light for an Underwater ROV Jeremy Schiele- ME, Project Manager Jonathan Lent- ME, Housing Design Justin VanSlyke- ME, Mounting Design & Testing Benoit Hennekinne- EE, Electrical Design Ryan Seeber- CE, Control GUI & Programming

2. Project Scope • To Design and build a lighting system meant for underwater applications, but capable of being used on land based platforms as well (eg: RP10 projects). The light housing should also be compatible with the thruster unit of P08454, and both be controlled from a single interface.

3. Project Background • Stems from lighting problem faced in original RIT submersible (P06066) • Inspiration was to provide RIT & HAI with more cost effective solutions to lighting systems for their products • Would enable RIT to expand the scope of regular senior design projects to an underwater environment

4. Project Customers • Primary Customer: Dresser Rand • Investigating underwater technology for future use in oil industry uses • Foresee future engineering needs • Secondary Customer: RIT Robotics Platform • Able to utilize lighting system on RP10 & 100 platforms • Customer/Advisor: Hydroacoustics Inc. • Contributed background knowledge & belongs to a possible market for future iterations

5. Primary Requirements • Waterproof & Pressure Resistant Design • ensures survivability of unit • High Light Output • greater than existing light • Low Power Consumption • helps prolong onboard battery life • Controllable from surface unit • both light and thruster operated simultaneously • Modular Housing Design • to be shared with thruster unit to minimize # of parts • Investigation into multi-spectral lighting • Water & its contents absorb/scatter certain wavelengths

6. Housing Design Iterations • Scalable Design • Unique sized parts • Modular Designs • Shared portion & defining sections 1) Finned housing 2) Bullet housing

7. Mounting Design Iterations • Hard Mount Design • Used for thruster • Ball Joint Design • Maximum light adjustment

8. Final Design-Housing & Mounting • Modular design • Swivel Mount

9. Design Implementation Standoffs x 9 Bullet Housing Snap-ring Lens O-Ring Bulkhead Connector Lens Cap Power Board μC Board LED Board O-Ring Driver Board

10. User Input LEDs Signal Feedback Power Light Output LED Driver Temp. Sensor PWM USB RS485 USB Converter Micro-Controller G.U.I. 5 V 24 V Power Board Battery Final Electrical Design

11. Final Software & GUI Design

12. Engineering Specifications Key metrics in bold

13. Method used for luminous flux testing Testing Overview • Pressure testing conducted at Hydroacoustics Inc. • Timed mounting/removal trials • Components inherent to design • Luminous Flux test video to follow presentation

14. Testing Verification

15. Projected Budget • Cost / LED light unit(4): $380.87 • Cost / thruster unit (4): $323.69 • Development board: $200.00 • Prototype Unit: $150.00 • Total Light Unit Budget: $1873.48 • Allocated to P08454: $1294.76 Total: $3168.24

16. Ending Project Budget • Cost / LED light unit(4): $550.09 • Cost / thruster unit (4): $260.89 • Development board: $85.80 • Prototype Unit: $114.91 • Total Light Unit Budget: $2200.38 • Allocated to P08454: $1043.57 Total: $3444.66

17. In Retrospect • Mitigate electrical problems • Allocating more electrical engineers for board development (2 minimum) • Simplifying board design to ease strain on our single electrical engineer • Beneficial outcome of LED manuf. problems • Two LED styles allows for different company’s models to be used

18. Future Improvements • Try multiple colors of LEDs from Lumileds or Cree • Minimize base housing size/weight • Beneficial for both light & thruster unit • Look into more compact bulkhead connectors • Complete anodizing of thruster housing