Biology Colloquium - Dr. Wei Li

Biology Colloquium - Dr. Wei Li

Postby cdouglas » Fri Feb 01, 2013 9:57 am

Department of Biology Presents

“Olfaction Based Navigation of Autonomous Vehicle: Strategies from Biological Intelligence to Machine Intelligence”

Dr. Wei Li
Professor, Computer & Electrical Engineering and Computer Science
California State University, Bakersfield

Friday, February 8, 2013
3:00-4:00 PM
Science 2, Room 109

Olfactory-based mechanisms have been hypothesized for a variety of biological behaviors: homing by Pacific salmon, foraging by Antarctic procellariiform seabirds, foraging by lobsters, foraging by blue crabs, and mate-seeking and foraging by insects. Olfactory-based mechanisms proposed for biological entities are mainly based on the tracking of chemical plumes developed in turbulence-dominated fluid flow environments. Autonomous vehicles capable of such chemical plume tracing (CPT) feats would have applicability in searching for deep-sea hydrothermal vents, finding unexploded ordnance, and monitoring pollutants or localizing sources of hazardous chemicals.

This talk discusses CPT strategies, inspired by the location of pheromone-emitting females by flying male moths, which is considered a remarkable case of chemical-guided navigation. The moth-inspired CPT strategies were implemented on a REMUS vehicle, developed by the Oceanographic Systems Laboratory at the Woods Hole Oceanographic Institute. The in-water test runs conducted at the San Clemente Island of California and at Duck in North Carolina document the first successful CPT missions in natural environments (near-shore ocean conditions) and record the longest distance of CPT until now. The most recent in-water tests in October 2010 at Dalian Bay, China, conducted by Shenyang Institute of Automation (SIA), Chinese Academy of Sciences, provide the technical support in the on-going project on designing an autonomous underwater vehicle for searching for deep-sea hydrothermal vents in oceans.

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