AI Waste Sorting With Airflow-Controlled Robot Pick and Release

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Solution Overview

Problem

Current waste sorting systems face challenges in efficiently sorting waste plastics from mixed garbage due to the need for precise separation and the increasing volume of waste plastics, which complicates recycling efforts.

Innovation Solution

A waste sorting system utilizing air direction control, featuring a robot arm that grabs and moves waste on a conveyor belt using air suction force and releases it using air discharge force, accompanied by an apparatus for air redirection and an artificial intelligence model for target object determination based on a multi-class criteria table.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual sorting methods are used for waste classification, then operational flexibility is maintained, but sorting efficiency and productivity are low

Engineering Contradiction:
Improvesorting efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical sorting operations with an automated system that uses image recognition technology and controlled air flow mechanisms. The camera captures waste images, the processor identifies target objects, and air nozzles automatically grab and move sorted waste, eliminating manual labor while maintaining high sorting efficiency.

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

Solution Approach 2:

The system enables self-service automation where the waste sorting process is performed autonomously without human intervention. The image recognition system automatically identifies target waste, the control unit autonomously determines sorting decisions, and the air blowing mechanism automatically executes the sorting action, creating a fully self-operating sorting system.

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If traditional waste sorting systems are used, then basic sorting functionality is provided, but adaptability to different waste types and sorting criteria is limited

Engineering Contradiction:
Improvesorting criteria flexibilityVSAvoiduser configuration difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements dynamic adaptability by allowing the sorting criteria to be flexibly configured and changed based on different waste types and recycling requirements. The system can dynamically adjust its recognition parameters and sorting rules without requiring physical reconfiguration, enabling it to adapt to various sorting scenarios including different waste materials, colors, shapes, and sizes.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If air suction force is applied to grab waste, then sorting precision is improved, but energy consumption increases

Engineering Contradiction:
Improvesorting precisionVSAvoidair consumption
Core Design Contradiction:
Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by directing air flow precisely only to the specific waste item that needs to be sorted, rather than using broad air flow fields. The air nozzles are positioned and controlled to deliver focused air jets exactly where needed to grab and move individual target objects, minimizing overall air consumption while maintaining high sorting precision.

Inventive Principle:
Principle #3Local quality

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 enables efficient sorting of waste by effectively controlling air intake and exhaust forces, allowing for precise targeting and sorting of waste objects, thereby optimizing recycling efficiency and reducing manual sorting challenges.

Implementation Method 1

a robot arm that grabs and moves waste moving on a conveyor belt using air suction force

Methodology Applied
Scientific EffectAir suction force: Suction

Implementation Method 2

releases the caught waste using air discharge force

Methodology Applied
Scientific EffectAir discharge force: Pressure Gradient

Data Source

PatentEP4552753A1Waste classification system using air direction control
Publication Date: 2025.05.14 AETECH
  • EP4552753A1 patent drawingFigure 1
  • EP4552753A1 patent drawingFigure 2
  • EP4552753A1 patent drawingFigure 3

AI summary

The present invention provides a waste sorting using air direction control, comprising an image collection unit that collects waste images of waste moving on a conveyor belt; a target object determination unit that determines whether the waste image is the target object to be sorted using an artificial intelligence model; a robot arm that sorts the target object; an apparatus of air redirection that changes the air direction so that the robot arm adsorbs the target object using air suction force or releases the target object using air discharge force; and a robot arm designation unit that designates a robot arm to sort the target object.