Method and device for extracting perception and response relation of fish to water flow form

Abstract

The invention relates to the technical field of water conservancy and hydropower engineering environmental protection, in particular to a method and device for extracting the perception and response relation of fishes to water flow forms. Comprising the following steps that S1, according to different lengths of target fishes, cylinders, blocks or partition plates of different sizes are arranged to serve as obstacles, and various water flow forms possibly encountered by fish bodies during swimming are manufactured in a water tank; s2, recording pressure data measured by the target fish in the swimming process through distributed flexible film pressure sensors on the surface of the fish body; s3, establishing an artificial neural network model of the motion parameters of the target fish and the measured pressure data through a machine learning method; and S4, predicting fish motion parameters in a new flow field environment by using the artificial neural network model established in the step S3, and continuously updating, iterating and perfecting the artificial neural network model by using new measured data.

Description

technical field [0001] The invention relates to the technical field of environmental protection of water conservancy and hydropower projects, in particular to a method and a device for extracting the relationship between fish perception and response to water flow patterns. [0002] technical background [0003] River engineering, such as dams or weirs, disrupts river connectivity and hinders the migratory migration of fish, and fishways are an effective measure to mitigate this negative effect. However, the actual use effect of the fishway is often far from the design expectation, the main reason is that it is difficult to consider the preference or response of the target fish to various water flow patterns in the design process. Therefore, how to obtain the perception and response laws of fish to water flow patterns is a huge technical obstacle in this field. At present, the commonly used method is to superimpose the fish trajectory and the time-averaged flow field. The tim...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of predicting the trajectory of fish under complex water flow conditions, and to provide a method and device for extracting the relationship between fish perception and response to water flow

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