Multiple sensor fish surrogate for acoustic and hydraulic data collection
AssigneeU.S. Army Corps of Engineers as represented by the Secretary of the Army
InventorsJohn M. Nestler, James L. Pickens, Jim Evans, Richard W. Haskins
Life of this patent
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Abstract
Acoustic signals and hydraulic pressure variations which influence fish bvior in bodies of water are measured and recorded by apparatus simulating a fish immersed in water, fitted with piezoelectric transducers and connected by wiring to remote amplifying and recording means. Such data are correlated with fish behavior for the purpose of developing methods of diverting fish from such areas of danger as the intake piping of hydroelectric power generating turbines and pumping stations.
Claims5
Apparatus for measuring the relation between acoustic signals, pressure variations in water and fish behavior comprising:
- (a) a hollow fish surrogate enclosure corresponding in size and shape to a fish being studied;
- (b) a plurality of piezoelectric sensors mounted on the exterior of the enclosure;
- (c) electrical wires connected to the sensors for transmitting output signals from the sensors;
- (d) a supporting pipe affixed to the enclosure, the electrical wires from the sensors passing through the support pipe;
- and
- (e) electronic amplifying and recording means connected to the wires, for recording acoustic signals sensed in the water.
Dependencies are inferred from the claim text.