Aquatic Animal Illumination System with Dynamic Light Control
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Solution Overview
Problem
Current fish cultivation in sea cages faces challenges with high light intensity causing stress during feeding, leading to inefficient food uptake and reduced productivity, while existing lighting solutions do not effectively distribute light evenly or account for natural light conditions.
Innovation Solution
An illumination system using immersed light emitting diodes (LEDs) with sensors and controllers to dynamically adjust light intensity and spectrum throughout the water volume, mimicking natural light conditions and optimizing food visibility and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If artificial light sources are used to illuminate the water surface for fish feeding, then food visibility is improved, but fish stress increases due to high light intensity
Solution Approach 1:
The patent applies local quality by illuminating only the specific feeding zones where food is dispersed, rather than uniformly illuminating the entire water body. This localized illumination approach improves food visibility at feeding spots while limiting overall light exposure to reduce fish stress.
Solution Approach 2:
The system dynamically adjusts light intensity and duration based on feeding operations. Lights are activated only during feeding events and at specific depths, creating a dynamic illumination pattern that balances food visibility needs with stress reduction by avoiding continuous or excessive lighting.
2Productivity
If high light intensity is used at the water surface, then food uptake is facilitated, but fish distribution becomes uneven and productivity decreases
Solution Approach 1:
The patent introduces vertical dimensionality to illumination by deploying light sources at multiple depths within the water column. This multi-level illumination strategy creates favorable light conditions at different vertical zones, encouraging more uniform fish distribution throughout the water depth while maintaining effective food visibility at feeding locations.
3Ease of manufacture
If traditional lighting systems are used, then installation is simple, but control precision and adaptability to different feeding conditions are insufficient
Solution Approach 1:
The system incorporates dynamic control capabilities that allow real-time adjustment of light intensity, duration, and spatial distribution based on feeding conditions. This dynamic adaptability enables the lighting system to respond to varying feeding requirements while maintaining relatively simple installation through modular light source deployment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system reduces stress during feeding, improves food uptake efficiency, enhances fish growth and uniformity, and increases productivity by providing a more even and natural light environment within the sea cages.
Implementation Method 1
at least one light source comprising at least one light emitting diode arranged to emit light
Implementation Method 2
at least one first light sensor arranged to provide illuminance data for at least one water volume of interest
Data Source
AI summary
There is provided an illumination system (100) for cultivation of aquatic animals. The illumination system (100) comprises at least one light source (110) emitting light, at least one light driver (120) arranged to drive the at least one light source (110), at least one light sensor (130) providing illuminance data for at least one point of interest (50) in said illumination system (100), and a controller (140). The controller (140) is adapted to provide control signals to the at least one light driver (120) driving the at least one light source (110) to emit light of a desired illuminance at the at least one point of interest (50). An ambient light sensor may be applied to determine control signals also in accordance with ambient light data.