Remote-Controlled Weed Removal Boat for Shallow Water Navigation
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Solution Overview
Problem
Existing large manned aquatic weed removal and decontamination boats are limited in their application due to deep draft and large turning radius, making them unsuitable for narrow and shallow water areas, and require high labor intensity and operational complexity.
Innovation Solution
An aerodynamic aquatic weed removal and decontamination device with a shore-based remote control system, featuring a power unit, weed removal and decontamination unit, positioning system, environment perception system, and shipborne controller, allowing for autonomous navigation and efficient operation in shallow waters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large manned boat with underwater propeller is used for weed removal, then it can operate in large water areas, but it cannot operate in narrow and shallow water areas due to deep draft and large turning radius
Solution Approach 1:
The boat is divided into modular components including a removable weed removal mechanism that can be detached and stored. This segmentation allows the boat to adapt between carrying the weed removal equipment for large water areas and operating without it in narrow shallow areas, resolving the contradiction between versatility and ease of operation
Solution Approach 2:
The boat employs dynamic draft adjustment through adjustable ballast tanks and a tilting propeller mechanism. The draft can be changed from deep to shallow configuration depending on water depth requirements, enabling operation across different water area types while maintaining manageable operational complexity through centralized control
2Power
If an underwater propeller is used for power, then it provides sufficient power for weed removal, but it is easily affected by plants and floatage in shallow water and may be destroyed
Solution Approach 1:
The propeller is designed with adjustable pitch and depth control mechanisms that allow it to dynamically adapt to varying water conditions. In shallow water with vegetation, the propeller can be raised or tilted to avoid plant contact while maintaining thrust, resolving the contradiction between power delivery and reliability
Solution Approach 2:
A protective shroud or cage structure is introduced around the propeller to act as an intermediary between the propeller blades and vegetation. This protective structure prevents direct contact with plants and floatage while allowing water flow to reach the propeller, maintaining power while improving reliability in shallow water environments
3Power
If high-speed rotation of underwater propeller is used, then it provides sufficient thrust, but it causes great damage to underwater aquatic plant
Solution Approach 1:
The propeller rotation speed and pitch are made dynamically adjustable based on operational conditions. In areas with sensitive aquatic vegetation, the system can reduce rotation speed or adjust pitch to minimize plant damage while maintaining sufficient thrust for weed removal operations, resolving the contradiction between thrust and environmental protection
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
Enables efficient and unmanned aquatic weed removal and decontamination in narrow and shallow water areas, reducing labor intensity and operational complexity while maintaining high maneuverability and navigation flexibility.
Implementation Method 1
a power unit, comprising an engine, a propeller connected to the engine
Implementation Method 2
a weed removal and decontamination unit, comprising a mesh conveyor
Data Source
AI summary
Aerodynamic aquatic weed removal and decontamination devices and decontamination methods are disclosed. In an embodiment, the aerodynamic aquatic weed removal and decontamination device includes a boat body and a shore-based device for remotely controlling the boat body. The boat body includes a power unit, a weed removal and decontamination unit, a positioning system, an environment perception system, and a shipborne controller. The power unit includes an engine, a propeller connected to the engine, and a rudder servo motor configured to control a heading of the boat body. The weed removal and decontamination unit includes a mesh conveyor. The positioning system includes a positioner configured to obtain real-time location information and heading information of the boat body. The environment perception system includes a wind sensor and a visual sensor. The shipborne controller is configured to control a navigation state of the boat body.