Electrostatic Weed Control Apparatus for Vehicle Spraying
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Solution Overview
Problem
Current weed control methods are inefficient and environmentally costly, particularly in industrial and railway settings, as they often require excessive herbicide use and can disrupt the environment.
Innovation Solution
A weed control apparatus equipped with an input unit, processing unit, and high voltage chemical spray units that atomize and charge liquid weed control chemicals, using electrostatic attraction to target weeds precisely, reducing chemical usage and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional weed control methods are used, then vegetation control is achieved, but excessive herbicide usage occurs and environmental impact increases
Solution Approach 1:
The patent changes the physical state and electrical properties of the herbicide by atomizing it into fine droplets and charging them electrostatically. This parameter change enables the herbicide to be attracted electrostatically to weed surfaces, significantly improving deposition efficiency and reducing the total quantity of herbicide needed while minimizing environmental impact
Solution Approach 2:
The patent replaces conventional mechanical spray systems with an electrostatic spray system. Instead of relying solely on mechanical pressure and wind drift for herbicide distribution, the system uses electrostatic forces to attract and deposit charged droplets onto weed surfaces, achieving more precise and efficient application
2Quantity of substance
If conventional spray systems are used, then weed coverage is attempted, but transfer efficiency of chemical to weed is low
Solution Approach 1:
The system atomizes the liquid herbicide into fine droplets and imparts an electrostatic charge to them. This parameter change in droplet size and electrical charge enables the herbicide to be attracted electrostatically to weed surfaces, significantly improving deposition efficiency and reducing the total quantity of herbicide needed while minimizing environmental impact
Solution Approach 2:
The system uses periodic pulsed electrostatic charging of the spray droplets in synchronization with the vehicle's movement and weed detection. This periodic action ensures that charged droplets are released at optimal moments to maximize electrostatic attraction to target weeds while maintaining high productivity
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 system effectively increases the transfer efficiency of weed control chemicals to weeds, minimizing chemical usage and environmental impact by using electrostatic attraction, while maintaining safety and operational efficiency on moving platforms.
Implementation Method 1
The at least one high voltage power supply and the at least one chemical spray unit are configured to hold the at least one part of the at least one chemical spray unit at at least one high voltage with respect to zero volts potential, such that the atomized liquid weed control chemical is electrically charged
Implementation Method 2
The weeds growing on the ground will be at ground potential, substantially at zero volts, and an atomized liquid weed control 'spray' will be attracted to the weeds
Data Source
Figure 1
Figure 2
Figure 3a~3g
AI summary
The present invention relates to a weed control apparatus (10) for a vehicle. It is described to provide (210) a processing unit with at least one image of an environment. The processing unit analyses (220) the at least one image to activate at least one chemical spray unit. A liquid weed control chemical is atomized and charged (230) by the at least one chemical spray unit. The at least one chemical spray unit has at least one part configured to be held at high voltage with respect to zero volts potential. The at least one high voltage power supply and the at least one chemical spray unit are configured to hold the at least one part of the at least one chemical spray unit at one or a number of high voltages with respect to zero volts potential, such that the atomized liquid weed control chemical is electrically charged.