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cse91 - Enabling the Next Generation of Underwater Sensor...

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Enabling the Next Generation of Underwater Sensor Networks Professor Ryan Kastner Dept. of Computer Science and Engineering University of California, San Diego November 3, 2009
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Ocean Observing Systems Can be used to Monitor earthquakes Study and model water column physics for hurricane track predictions Measure hydrographic conditions for climate change studies Collect biological parameters for harmful algal bloom prediction Measure chemical parameters for beach pollutant warnings
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Ocean Observing Systems Real-time data allow scientists to Create climate prediction models Issue tsunami warnings Issue hurricane warnings Contact authorities to issue beach closure or shellfish consumption warnings Begin adaptive sampling (interrogating instruments to increase their sampling rate)
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Monitoring in Moorea Establish monitoring sites in lagoons and on fore reefs surrounding Moorea Response variables measured: Weather Tides, Currents and Flows Ocean Temperature & Color Salinity, Turbidity & pH Nutrients Recruitment & Settlement Size & Age Structure Species Abundance Community Diversity Lagoon Fore reef
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Vision for Underwater Networking in Moorea UC Gump Research Sta1on ReefPole AquaNode Legend Acous1c Link L Local Area Underwater Network S1ngray DriBers Viapahu Lagoon
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AquaNode Transducer Software Defined Acoustic Modem Battery Deploy ad hoc wireless underwater networks around island Transmit data to/from underwater sensors Aquanode requirements: Low cost, low power wireless modems Associated networking functionality Plug and play interface with variety of sensors Near real-time data and adaptive sampling
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AquaNode Hardware Platform Ideal: One piece of hardware for any sensor and scenario Hardware is wirelessly updatable: no need to retrieve equipment to update hardware for changing communication protocols, sampling, sensing strategies A/D . . . A/D . . . Transducer or Hydrophone inputs Matching Network and Power Amp Daughtercard D/A D/A μ Controller RS232 CTD Sensor FPGA
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Hardware Platform Interfaces Sensor Interface: Must develop common interface with different sensors (CTD, chemical, optical, etc.) and communication elements (transducer) Wide (constantly changing) variety of sensors, sampling strategies
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