renewable ocean energy & the marine environment - new environmental technologies
DESCRIPTION
Presentation at Florida Atlantic U. COET conference 2010. More at: http://www.ces.fau.edu/coet/agenda.phpTRANSCRIPT
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Active Acoustic TechnologyFor Biological Detection, Assessment, and Monitoring
at MHK Sites
Bob McClureBioSonics, Inc.
2-5 November, 2010
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
BioSonics Inc.Digital Scientific Echosounders
DT-X EchosounderScientific Split Beam Echosounder
Hydroacoustics
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Transducer
Sound Field
Input
OutputScientific Echosounder
Electrical energy converted to sound
Sound transmitted through water, focused on axis
Sound is reflected by objects with different density than water
Reflected energy is converted by transducer from mechanical to electrical
Sound velocity used to convert time-based data into range-based data
Echosounder receiver amplifies signal and provides quantitative output (display and raw acoustic data)
Time
Vo
lta
ge
Output
BioSonics Inc.Principals of Acoustics
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Mobile SurveysVertical Transducer Orientation
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Echogram
Bulls eye display shows targets relative position within beam
Oscilloscope
Data Collection & Analysis
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
AcousticCameras
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Traditional Fixed-Location Split Beam Acoustic Monitoring
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
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Roosevelt Island Tidal Energy (RITE) Project
Cross section showing analysis grids
Automated Analysis
Biological Observations reported for each analysis grid
Reports and Alerts Published in real-time
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Accurate detection and tracking of targets throughout the coverage range.
Target classification, identification, possible based on acoustic and other sensor / knowledge.
Range adequate for real-time data processing and reporting.
Detection and Tracking of Marine Mammals
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
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Turbine
Transect path
Hydroacoustic Survey - SeaGen ProjectStrangford Lough, Ireland
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Echogram from 400 m transect traveling South to North
400 m
25 m
Results: Excellent environment for detection and classification of marine organisms
Hydroacoustic Survey - SeaGen ProjectStrangford Lough, Ireland
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Hydroacoustic System to Monitor Marine Mammal Interactionsat Kinetic Hydro Power Project Site
Profile view showing hydroacoustic coverage zone utilizing four-transducer system400 m
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Cross-section view of bi-directional monitoring system
Concept of Operation
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
Monitoring Operation – Profile View
Acoustic coverage area is a function of the number of transducers
Quantify and monitor trajectory of all objects entering turbine field
Understand how marine animals interact with the device
Acoustic coverage area using 1, 2, or 3 transducers
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com
150 m
Monitoring Operation – Plan View
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
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Monitoring Operation – Rotators and Additional Sensors
Dual axis mechanical rotators can be used to increase coverage “footprint”
Imaging sonar device can be integrated for ground truth and refinement of split-beam classification engine
Offering the Widest Range of Hydroacoustic Solutions 2003-2010 Copyright BioSonics, Inc. All Rights Reserved
www.biosonicsinc.com