EAGER: Developing Multi-Hop Sensorbots for Underwater Wireless Sensor Networks

Project: Research project

Description

The goal of this transformative project is to significantly extend the spatial range and coverage of a network of optically-communicating, deep ocean sensors. The Center for Biosignatures Discovery Automation in the Biodesign Institute at Arizona State University has created a miniaturized, low-cost, underwater, autonomous sensor platform called a Sensorbot. A single Sensorbot constitutes a network node, capable of measuring and reporting the properties of the fluid in which it is located. Sensorbot communication is accomplished by optical blinking patterns which digitally encode the sensor values, transmitting them to a receiver. In the current state of development, the entire Sensorbot network must be viewed simultaneously, but through this proposal, short-range communicating Sensorbots will intelligently link together to extend their coverage over long distances in a multi-hop networking approach, thus overcoming the range limitation of standard underwater optical communication. With multi-hop capability a large number of submerged Sensorbots will carry biogeochemical data over large expanses of the deep oceanpotentially many square kilometersback to a central node that is either periodically recovered by ship or continuously monitored by means of a cabled connection to land. This approach has all the benefits of optical modulation speed and efficiency but lacks the primary limitation of poor optical communication range. The principle goal of this NSF EAGER proposal is to extend the Sensorbot network design, range and coverage by incorporating multi-hop functionality.
StatusFinished
Effective start/end date1/1/126/30/14

Funding

  • National Science Foundation (NSF): $360,000.00

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Wireless sensor networks
Optical communication
Sensors
Light modulation
Ships
Automation
Fluids
Communication
Costs