Automated Secondhand Textile Inspection for Resale Sorting

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Solution Overview

Problem

Current methods for processing secondhand textiles are labor-intensive, time-consuming, and prone to errors due to manual handling and visual inspection, which affects the accuracy of determining attributes and quality, limiting the efficient utilization of secondhand textiles.

Innovation Solution

An automated method using inspection and screening hardware, such as laser sensors, infrared cameras, and AI processors, to determine attribute data and quality of secondhand textiles, enabling automated sorting and tagging for resale or recycling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual handling and visual inspection is used to process secondhand textiles, then employees can determine attributes and quality of each item, but the process becomes labor-intensive and time-consuming

Engineering Contradiction:
Improveattribute determination accuracyVSAvoidprocessing speed
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces manual mechanical inspection with automated optical and sensing systems. Image capture devices, laser sensors, and infrared cameras automatically detect textile attributes such as material composition, color, size, and defects, eliminating the need for manual handling while maintaining or improving measurement accuracy.

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

Solution Approach 2:

The patent introduces an intermediary automated inspection system that acts as a mediator between the textiles and the decision-making process. This system includes image processing algorithms and data analysis components that interpret sensor data to determine textile attributes and quality, bridging the gap between raw sensory data and actionable classification decisions.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If manual visual inspection is used to determine textile quality, then employees can assess salability based on wear and damage, but errors and oversights occur due to human fatigue and subjectivity

Engineering Contradiction:
Improvequality assessment consistencyVSAvoiddefect detection accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent replaces subjective human visual assessment with objective automated sensing systems. Multiple sensors including image capture devices, laser sensors for material identification, and infrared cameras for detecting stains and defects provide consistent, repeatable measurements that eliminate human fatigue and subjectivity while improving defect detection accuracy.

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

Solution Approach 2:

The patent implements feedback mechanisms where the automated inspection system continuously analyzes textile attributes and provides real-time classification decisions. The system uses image processing algorithms that compare detected features against predefined quality criteria, providing consistent feedback on salability determinations that can be validated and adjusted based on accumulated data.

Inventive Principle:
Principle #23Feedback

3Productivity

If automated inspection hardware is used to process secondhand textiles, then processing efficiency and accuracy improve, but device complexity increases

Engineering Contradiction:
Improveprocessing throughputVSAvoidinspection system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent employs multi-functional inspection hardware that can perform multiple detection tasks simultaneously. For example, image capture devices serve both for visual inspection and material identification, while laser sensors provide both material composition analysis and defect detection. This reduces the number of separate devices needed and simplifies the overall system architecture.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines multiple sensing functions into integrated inspection stations. Image capture devices, laser sensors, and infrared cameras are merged into a coordinated system that processes textiles through a single pass, eliminating the need for multiple separate inspection stages and reducing operational complexity.

Inventive Principle:
Principle #5Merging (Combining)

4Loss of information

If comprehensive attribute data is collected from each secondhand textile, then resale value determination improves, but processing time increases due to detailed inspection requirements

Engineering Contradiction:
Improveattribute information completenessVSAvoidinspection duration
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The patent implements continuous automated inspection where textiles move through the system on conveyors while being scanned by multiple sensors simultaneously. The inspection process occurs continuously without interruption, capturing all necessary attribute data in a single pass rather than through multiple sequential manual examination steps.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent performs preliminary automated data collection using non-contact sensors before any physical handling or detailed examination. Image capture devices and laser sensors gather comprehensive attribute information including material composition, color, size, and visible defects in advance, allowing for rapid initial classification and reducing the need for time-consuming manual verification.

Inventive Principle:
Principle #10Preliminary 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

Facilitates efficient, accurate, and scalable processing of secondhand textiles with minimal human interaction, enhancing their utilization and reducing textile waste by automating the determination of attributes and quality.

Implementation Method 1

inspection and screening hardware, such as laser sensors

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

infrared cameras

Methodology Applied
Scientific EffectInfrared radiation: Infrared Radiation

Data Source

PatentUS20250335882A1Method of processing secondhand textiles for further utilization
Publication Date: 2025.10.30 HARVEST NANO INC
  • US20250335882A1 patent drawing
  • US20250335882A1 patent drawing
  • US20250335882A1 patent drawing

AI summary

A method of processing secondhand textiles for further utilization includes providing a secondhand textile, inspecting and screening the secondhand textile, with at least inspection and screening hardware, to determine attribute data of the secondhand textile, analyzing the determined attribute data of the secondhand textile, and determining if the secondhand textile is salable or non-salable based on at least the analyzing of the determined attribute data of the secondhand textile.