Optical Defect Detection in Manufacturing Lines

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Solution Overview

Problem

Existing manufacturing processes face challenges in detecting subtle or obvious defects in products, especially when production rates exceed human capabilities for real-time recognition and removal, leading to potential unsellable or unsafe materials.

Innovation Solution

The implementation of optical detection systems integrated with imaging units and computer analysis for real-time defect detection in materials and products, capable of calibrating to specific target regions and stopping malfunctioning equipment, applied across various manufacturing processes including textiles, metals, and composites.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If optical detection systems are implemented for real-time defect detection, then productivity is improved by detecting defects at higher production rates, but device complexity increases due to integration of imaging units and computer analysis systems

Engineering Contradiction:

Improvedefect detection rateVSAvoiddetection system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces manual visual inspection with automated optical detection systems comprising imaging units and computer analysis. This substitution enables defect detection at production rates exceeding human capabilities while eliminating the limitations of manual inspection methods.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates optical copies (images) of the material surface through imaging units, which are then analyzed by computer systems. This copying approach allows for detailed examination of defects without physically contacting or slowing down the production process.

Inventive Principle:

Principle #26Copying

2Measurement precision

If optical detection systems are used to detect subtle defects, then measurement precision is improved for identifying defects invisible to human eye, but difficulty of detecting and measuring increases due to subtle defect characteristics

Engineering Contradiction:

Improvedefect detection precisionVSAvoidsubtle defect detection difficulty

Core Design Contradiction:

Measurement precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The patent replaces human visual inspection with optical imaging systems and computer analysis algorithms. This substitution enables detection of subtle defects that are invisible to the human eye by using sensors and processing systems with superior resolution and sensitivity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system changes the detection parameters by using optical imaging rather than human vision, allowing detection at different scales and with different sensitivity thresholds. The computer analysis can process image data to identify subtle variations in texture, color, or structure that would be imperceptible manually.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If real-time defect detection is implemented to prevent export of flawed materials, then reliability is improved by ensuring product quality, but loss of time occurs in processing and analyzing data at high production rates

Engineering Contradiction:

Improveproduct quality assuranceVSAvoiddata processing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements continuous real-time defect detection during material production and transport. The imaging units and computer analysis operate continuously without interrupting the production flow, enabling immediate identification and removal of defective materials while maintaining uninterrupted manufacturing processes.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system replaces slow manual inspection with automated optical detection and computer analysis that can process data at speeds matching high production rates. This substitution eliminates the time bottleneck of human review while maintaining comprehensive quality checking of all produced materials.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enhances quality control by reducing unsellable products, preventing the export of potentially flawed materials, and enabling continuous defect detection at higher production rates than human capabilities, thereby improving process efficiency and safety.

Implementation Method 1

capture an image or video corresponding to the target region as the material sheet is produced

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 2

capture an image or video corresponding to the target region as the material sheet is produced

Methodology Applied

Scientific EffectLight transmission: Refraction

Data Source

PatentUS20230021315A1Systems and methods for defect detection

Publication Date: 2023.01.26 SMARTEX EURO UNIPESSOAL LDA

AI summary

Systems and methods are disclosed for detecting defects during manufacturing processes for materials and products. The provided systems may utilize imaging units and computer detection algorithms to determine the presence or absence of defects in manufactured materials or products. Detection of defects in material or products by the disclosed systems may prompt intervention in the manufacturing process to correct the source of the defects.