Volcanic Lake ROV Capstone 2012 Presenter: Stephen Phan Team Members: Christina Yugay Duc Nguyen Giang Le Son Nguyen Chinh Vu Faculty Advisor: Dr. Faryar Etesami Sponsor: Dr. Kenneth Stedman

Content Project Overview Requirements Water Sampler Wireless Data Transmission Testing Conclusions Q&A

Project Overview Boiling Springs Lake – Lassen Volcanic National Park, CA Ideal conditions for thermophile virus ROV(Remotely Operated Vehicle) maps the depth and measures surface temperature No Sampler System yet

Samples Data Boiling Spring Lake 120 deg. Celsius, pH: 2 ROV Requirements Collects water samples of at least 0.5 L 120 deg. Celsius, sulfurous and sulfuric acids, pH: m distance real-time data transmit

Water Sampler Design Concept selection 128 oz. force-stroke Linear Solenoid Actuator for opening and closing water inlet T6061 Aluminum body and threaded rod support structure Chrome Faucet

Water Sampler Design

Analysis and Manufacturing Analysis Stress Analysis for the Wall Thickness, Buoyancy Analysis, CFD analysis for water flow Material testing under acidic environment Manufacturing Entirely manufactured at PSU Machine Shop, including CNC machining

Final Water Sampler

Wireless Data Transmission

Device Arduino Uno R3 XBee Pro 60mW Chip Antenna - Series 1 Thermocouple Amplifier MAX6675 Programming Real-time data display Data Logging

Testing

Testing Results Takes up to 1.2 L at 1.5 m depth in 1.5 minutes Structure compatible with existing docking mechanism Structure tolerates pressure at 1.5 m depth with good seal Transmits depth and temperature measurements in real-time from a distance up to 100 m Simple GUI with LABVIEW© interface work well

Conclusion The water sampler and the data transmission systems satisfy all the requirements at the fundamental level Improvements could be made are: 1.Finding a better cable for the winch, 2.More convenient connection of the device to the winch system, 3.More robust housing for the solenoid actuator 4.Optimized dock for easier exit and entrance 5.More advanced tool for data transmission to fully operate ROV from computer from the shore

The Process

Q&A