Ship Hull Biofouling Prevention via Electromagnetic Wave Generation
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Solution Overview
Problem
Conventional methods for removing biofouling from ship hulls are inefficient, requiring significant personnel, time, and resources, and can cause ecosystem disturbances, while existing solutions do not effectively prevent biofouling using electromagnetic waves.
Innovation Solution
A biofouling prevention device using electrodes on ship hulls that supply a driving signal generated by mixing AC and DC signals, allowing for customized management of biofilm removal through adjustable signal characteristics and electrode patterning, facilitating the formation of large-area electrodes using a shadow mask process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods (divers with brushes or underwater robots) are used to remove marine organisms, then biofouling can be removed, but it requires large numbers of personnel, long working hours, and excessive costs
Solution Approach 1:
The patent replaces mechanical cleaning methods (brushes and robots) with an electromagnetic field-based system. Electrodes generate electromagnetic waves that disrupt biofilm structure and prevent marine organism attachment, eliminating the need for manual or robotic mechanical cleaning operations.
Solution Approach 2:
The electromagnetic wave generation system operates autonomously once installed on the hull. The electrodes continuously generate electromagnetic waves that self-regulate to prevent biofouling accumulation, requiring no active human intervention or operational time for cleaning tasks.
2Productivity
If conventional cleaning methods are used, then biofouling can be removed, but it causes ecosystem disturbances through migration of ship-attached organisms
Solution Approach 1:
The electromagnetic wave system prevents biofouling before it becomes established and problematic. By continuously generating electromagnetic waves, the system disrupts the initial attachment and growth stages of marine organisms, preventing the formation of mature biofilms that would otherwise need to be removed and cause ecosystem disturbance.
Solution Approach 2:
The patent replaces mechanical removal methods that physically dislodge and potentially spread organisms with an electromagnetic field approach that prevents attachment at the molecular level, thereby avoiding the mechanical disturbance and migration of organisms associated with brushing and robotic cleaning.
3Productivity
If electromagnetic waves are used to prevent biofouling, then removal efficiency is enhanced, but the device requires complex signal supply systems with AC and DC signal mixing
Solution Approach 1:
The patent combines AC and DC signal generation into a single integrated signal supply unit. This merged system generates both signal types and mixes them to create the composite electromagnetic waveform, reducing the need for separate signal generation systems and simplifying the overall device architecture.
Solution Approach 2:
The signal supply unit serves multiple functions: it generates AC signals, generates DC signals, mixes these signals together, and supplies the composite signal to the electrodes. This multi-functional design reduces the number of separate components needed and simplifies the control system.
4Area of stationary object
If large-area electrodes are formed on ship hulls, then electromagnetic wave coverage is improved, but the manufacturing process becomes more difficult
Solution Approach 1:
The patent divides the large-area electrode into multiple smaller electrode segments or patterns that can be individually manufactured and then assembled or activated together. This segmentation makes the manufacturing process more manageable while still achieving comprehensive electromagnetic wave coverage across the hull surface.
Solution Approach 2:
The electrode system uses different electrode patterns, densities, or configurations in different areas of the hull based on local requirements. High-risk areas for biofouling receive denser or more active electrode patterns, while lower-risk areas use sparser patterns, optimizing both effectiveness and manufacturing ease.
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
The device effectively prevents biofouling by emitting electromagnetic waves that inhibit biofilm formation, enhancing removal efficiency and allowing for area-specific management, thereby reducing operational costs and ecosystem impact.
Implementation Method 1
an electrode disposed on a surface area of a hull and configured to supply with a driving signal to provide electromagnetic waves corresponding to the driving signal
Implementation Method 2
the driving signal may be generated by mixing an AC signal and a DC signal
Data Source
AI summary
The present invention relates to a biofouling preventing device for ships and a method for manufacturing same. The biofauling preventing device for ships includes: an electrode disposed on a surface area of a hull and configured to supply with a driving signal to provide an electromagnetic wave corresponding to the driving signal; and a signal supply configured to supply the driving signal to the electrode.