Communication Dans Un Congrès Année : 2024

Bio-inspired robotic fish for assessment of injury risks during the fish passage

Résumé

A major contributor to the decline of freshwater fish biodiversity is disrupted river continuity, including the increased risk of fish injury and mortality during passage through pumping stations and turbine passages. In addition to barrier removal, improved mitigation strategies are needed to reduce the risk of mortality at hydraulic structures. Live fish tests are the most common method to assess the risk of injury and mortality during passage through hydraulic structures. The reduction of animal testing in turbine passages through the use of robotic fish, flow simulations and predictive models (RETERO) project has been developed to explore the use of surrogate technologies to replace the need for live fish testing to the greatest extent possible. Here, we introduce a bio-inspired, flexible fish robot with integrated sensors to replace live fish tests. The fish robot is equipped with a propulsion system and pressure and acceleration sensors that record both the local hydraulic parameters as well as collisions during passage, and can be compared with existing passive sensor systems. The RETERO fish robot enables complex measurements in turbulent flows and can provide important data to better understand fish, e.g., to explore their active sensing space and to validate numerical simulations of fish-flow interactions. It is therefore suitable for a wide range of applications such as ethohydraulic assessment of flow fields in rivers, bypass systems, fish passes, and for laboratory applications. In this work, the authors provide an overview of the current state of robotic fish development and provide first laboratory tests of the device.

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Dates et versions

hal-05155168 , version 1 (09-07-2025)

Identifiants

  • HAL Id : hal-05155168 , version 1

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Shokoofeh Abbaszadeh, Gert Toming, Jeffrey A. Tuhtan, Roberto Leidhold, Stefan Hoerner. Bio-inspired robotic fish for assessment of injury risks during the fish passage. 15th International Symposium on Ecohydraulics and Fish Passage, IAHR, May 2024, Quebec, Canada. ⟨hal-05155168⟩
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