High-Frequency Weed Electrocution Unit for Large-Area Control

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Solution Overview

Problem

Existing methods for controlling plant growth, such as manual extraction and chemical herbicides, are laborious, environmentally harmful, and pose health risks, while existing electrical weed control devices are bulky, dangerous, and limited to small areas.

Innovation Solution

An electrical energy processing unit that converts unprocessed energy into high-frequency, high-voltage electrical energy with a frequency of at least 18 kHz and peak voltage of 1 kV to 30 kV, applied through applicator electrodes, effectively killing or attenuating plant growth without direct contact, and using a compact design suitable for agricultural and larger areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual extraction of weeds is used, then weeds can be removed from the ground, but the process is laborious and time-consuming

Engineering Contradiction:
Improveweed removal efficiencyVSAvoidtime required for weed extraction
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical extraction with an electrical energy-based system. The electrical energy processing unit generates high-frequency, high-voltage electrical energy that is applied to weeds through applicator electrodes, causing rapid destruction of plant tissue without manual pulling or mechanical removal.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The electrical energy processing unit operates by generating periodic high-voltage pulses at frequencies of at least 18 kHz. This periodic electrical action rapidly destroys weed tissue through repeated voltage cycles, achieving quick weed control without the time-consuming process of manual extraction.

Inventive Principle:
Principle #19Periodic action

2Productivity

If herbicides are used to kill weeds, then weed growth can be controlled, but environmental contamination and health risks increase

Engineering Contradiction:
Improveweed control effectivenessVSAvoidenvironmental and health hazards
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces chemical herbicide application with an electrical energy-based system. The electrical energy processing unit generates high-frequency, high-voltage electrical energy that physically destroys weed tissue through electrical breakdown, eliminating the need for toxic chemical substances and their associated environmental and health hazards.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter of weed control from chemical exposure to electrical energy application. By using high-frequency (at least 18 kHz) and high-voltage (1 kV to 30 kV) electrical energy, the system achieves effective weed destruction through physical means rather than chemical means, avoiding contamination and health risks.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If conventional electrical weed control systems are used, then plant growth can be attenuated, but the systems are bulky and dangerous

Engineering Contradiction:
Improveelectrical weed control effectivenessVSAvoidsystem size and safety
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent significantly changes the frequency parameter to at least 18 kHz and voltage parameter to 1 kV to 30 kV ranges. These parameter changes enable effective weed control while the high-frequency operation reduces the physical size of required electrical components compared to conventional low-frequency systems.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system uses periodic high-voltage pulses at high frequency (at least 18 kHz) to achieve weed control. This periodic action at elevated frequency allows for more compact electrical design while maintaining effectiveness, and the rapid cycling reduces the danger of sustained high-voltage exposure.

Inventive Principle:
Principle #19Periodic action

4Device complexity

If low-frequency electrical energy is used for weed control, then the system can be simpler, but the equipment becomes bulky and less effective

Engineering Contradiction:
Improvesystem simplicityVSAvoidweed control effectiveness
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent raises the frequency parameter to at least 18 kHz and voltage parameter to 1 kV to 30 kV. This parameter elevation improves weed control effectiveness by causing rapid electrical breakdown of plant tissue, while simultaneously allowing for more compact electrical components compared to low-frequency systems.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system employs periodic high-voltage pulses at high frequency (at least 18 kHz) to achieve rapid and effective weed destruction. The high-frequency periodic action ensures thorough penetration and destruction of weed tissue while maintaining system compactness and simplicity.

Inventive Principle:
Principle #19Periodic action

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 high-frequency electrical energy safely and efficiently kills or inhibits plant growth, reducing environmental contamination and health risks, while being compact and suitable for large-scale applications.

Implementation Method 1

generates processed electrical energy to kill or attenuate plant growth

Methodology Applied
Scientific EffectElectrical energy: Electric Field

Implementation Method 2

kill or attenuate plant growth through direct contact or arcing

Methodology Applied
Scientific EffectElectrical arcing: Electric Arc

Data Source

PatentUS12628812B2Apparatus and method for electrically killing plants
Publication Date: 2026.05.19 UBIQUTEK
  • US12628812B2 patent drawing
  • US12628812B2 patent drawing
  • US12628812B2 patent drawing

AI summary

An electrical energy processing unit of an apparatus to kill a plant or at least attenuate plant growth is disclosed. The electrical energy processing unit includes a converter and a control circuit. Also disclosed are an apparatus that includes the electrical energy processing unit and a method of utilizing the apparatus. Further disclosed are a computer program for a processor of the control circuit of the electrical energy processing unit and a non-transitory computer readable medium that includes the computer program.