Concentrated Solar Weed Control With Precision Beam Targeting
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Solution Overview
Problem
Conventional weed control methods, including chemical herbicides and mechanical cultivation, face challenges such as environmental contamination, health risks to workers, and inefficiencies in resource use, particularly in terms of fossil fuels and water, while also promoting herbicide resistance and soil erosion.
Innovation Solution
The use of concentrated solar energy to damage weeds through targeted heating, eliminating the need for chemical herbicides and fossil fuels, with integrated systems for solar energy collection, beam control, and autonomous robotic applications for efficient and precise weed control across various scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical herbicides are used for weed control, then weed growth is suppressed, but environmental contamination and health risks increase
Solution Approach 1:
The patent replaces chemical herbicide application with a mechanical/physical system using concentrated solar energy delivered through optical fibers to thermally damage weeds. This substitution eliminates chemical contaminants while maintaining effective weed control through targeted thermal energy delivery to weed plants.
Solution Approach 2:
The patent converts harmful solar radiation into a beneficial controlled energy source for weed control. By using optical fibers to deliver concentrated solar energy precisely to weeds, the system transforms potentially harmful UV radiation into controlled thermal energy that damages weed tissues without affecting the surrounding environment or crops.
2Reliability
If mechanical cultivation is used for weed control, then weed plants are damaged, but soil erosion and damage to desired plants occur
Solution Approach 1:
The patent replaces mechanical cultivation systems with an optical/thermal system that uses concentrated solar energy delivered through optical fibers. This substitution eliminates soil disturbance and erosion while achieving effective weed control through targeted thermal damage to weed plants without mechanical contact with the soil.
Solution Approach 2:
The patent applies thermal energy locally and selectively to weed plants through optical fiber delivery. The concentrated solar energy is delivered precisely to the target weed location, creating localized thermal damage only where needed, while leaving the surrounding soil and crop plants unaffected, thus preventing soil erosion and collateral damage.
3Reliability
If conventional combustion heating is used for weed control, then weeds are damaged, but carbon dioxide emissions and fuel costs increase
Solution Approach 1:
The patent replaces conventional combustion heating systems with a direct solar thermal system using optical fibers to deliver concentrated solar energy. This substitution eliminates carbon dioxide emissions from fossil fuel combustion while providing effective weed control through direct solar energy conversion to thermal energy at the target location.
Solution Approach 2:
The patent uses solar energy, a free and renewable resource, to power the weed control system directly. The system captures and concentrates solar energy on-site without requiring external fuel supplies or generating greenhouse gas emissions, making the energy source self-sufficient and environmentally sustainable.
4Reliability
If manual cultivation is used for weed control, then weeds are removed, but labor intensity and physical strain increase
Solution Approach 1:
The patent replaces manual cultivation with an automated optical system using optical fibers to deliver concentrated solar energy. This substitution eliminates manual labor and physical strain while achieving effective weed control through automated targeted thermal delivery to weed plants.
Solution Approach 2:
The patent uses optical fibers as intermediaries to deliver solar energy from the collection point to the weed target. This intermediary system allows for precise, remote, and automated weed control without requiring direct manual contact or physical effort from operators, significantly reducing labor intensity.
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 approach reduces environmental impact, minimizes health risks, and provides a cost-effective, sustainable method for weed control that is adaptable to different agricultural and lawn settings, enabling frequent and precise treatment without the drawbacks of traditional methods.
Implementation Method 1
The vehicle is solar powered, with solar photovoltaic cells providing electrical power to drive the vehicle and operational components.
Implementation Method 2
concentrated solar energy to damage weeds through targeted heating
Implementation Method 3
application of concentrated solar energy to kill, stunt, or otherwise damage or impede weed growth
Data Source
AI summary
A method and apparatus for controlling weeds using concentrated solar energy is disclosed. Solar energy may be concentrated by Fresnel lens and directed by manual or automated methods at surfaces of weed plants to heat portions thereof causing damage. Shutters or other devices may be used to direct, and control intensity of concentrated, solar energy, such control preferably applied before significant concentration. In some embodiments, solar energy concentration apparatus may be integrated with ground, air, or water vehicles which may use solar photovoltaic cells for electric power for propulsion and other purposes. Vehicles may use global positioning satellite (GPS) receivers or other methods and apparatus, including video cameras, for navigation and selection of areas (e.g., row middles), plants, or portions of plants to be exposed to concentrated solar energy. Air vehicles may use hydrogen gas electrolyzed from water condensed from humid air to replenish hydrogen gas lost from containment vessels.