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Six-Degree-of-Freedom Sensor Fish Design and Instrumentation.

Zhiqun Deng1, Thomas J Carlson2, Joanne P2

  • 1Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA. zhiqun.deng@pnl.gov.

Sensors (Basel, Switzerland)
|September 15, 2017
PubMed
Summary
This summary is machine-generated.

The six-degree-of-freedom (6DOF) Sensor Fish device measures physical stresses on fish passing through dams. This technology helps identify hazardous conditions, improving fish survival rates during dam passage.

Keywords:
Sensor Fishfish injury mechanism.fish-friendly turbine

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Area of Science:

  • Environmental Science
  • Hydraulic Engineering
  • Wildlife Biology

Background:

  • Fish mortality occurs during dam passage despite mitigation efforts.
  • Understanding physical forces on fish is crucial for conservation.
  • Existing methods lack detailed stress characterization.

Purpose of the Study:

  • To introduce and validate the six-degree-of-freedom (6DOF) Sensor Fish device.
  • To characterize physical conditions and stresses experienced by fish during dam passage.
  • To identify specific dam operations and locations posing risks to fish.

Main Methods:

  • Developed a 6DOF Sensor Fish device simulating fish size and density.
  • Equipped the device with rotation, acceleration, pressure, and temperature sensors.
  • Defined exposure events based on acceleration thresholds to categorize risks (collision, shear).

Main Results:

  • The Sensor Fish accurately measures acceleration and rotation (error <5%).
  • Pressure sensor accuracy is within 0.2 psi.
  • The device successfully identified hazardous conditions at major US dams.

Conclusions:

  • The 6DOF Sensor Fish is a valuable tool for assessing fish injury risks at dams.
  • Data from the Sensor Fish can inform operational changes to improve fish passage.
  • This technology aids in the design and implementation of effective fish protection strategies.