Seed Particle Calibration for Automated Sorting Accuracy
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Solution Overview
Problem
Current automated sorting systems for particles, such as titanium sponge, face challenges with accuracy, reliability, and cost due to issues like nonuniform illumination and mechanical problems, requiring frequent calibration and resulting in process downtime.
Innovation Solution
The use of seed particles with predetermined properties, such as color or composition, that mimic undesirable particles allows for the qualification and calibration of automated sorting systems, ensuring accurate detection and removal of impurities with minimal disruption to the process flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated inspecting and sorting systems are implemented to replace manual visual inspection, then productivity and cost efficiency are improved, but reliability and measurement precision deteriorate due to nonuniform illumination and mechanical problems requiring frequent calibration
Solution Approach 1:
The patent applies the copying principle by creating seed particles that are identical copies of undesirable particles in terms of their optical and physical properties. These seed particles are used to calibrate the automated inspection system, ensuring that the system can accurately distinguish undesirable particles from desirable ones. By using copies (seed particles) that match the target objects (undesirable particles), the system achieves reliable detection without requiring manual recalibration for each batch
Solution Approach 2:
The patent applies parameter changes by systematically varying the properties of seed particles (such as color, size, shape, and composition) to match different types of undesirable particles. This allows the automated inspection system to be calibrated for multiple types of defects by adjusting the parameters of the seed particles used during calibration, thereby maintaining high reliability across different sorting scenarios
2Measurement precision
If frequent calibration is performed to maintain sorting accuracy, then measurement precision is improved, but productivity deteriorates due to process downtime
Solution Approach 1:
The patent applies preliminary action by performing calibration using seed particles that are mixed with the actual product stream during normal operation. This allows the system to be continuously calibrated without stopping the production line, as the seed particles are introduced and detected in real-time. The calibration action is performed preliminarily and continuously rather than periodically during downtime
Solution Approach 2:
The patent implements continuity of useful action by enabling the calibration process to occur simultaneously with the sorting operation. Seed particles are continuously introduced into the product stream, and the inspection system continuously detects and responds to them, maintaining calibration accuracy without interrupting the sorting process. This eliminates the need to stop production for recalibration
3Measurement precision
If manual visual inspection is used to ensure high sorting accuracy, then measurement precision is improved, but productivity and cost efficiency deteriorate
Solution Approach 1:
The patent uses seed particles as an intermediary between the automated inspection system and the undesirable particles. The seed particles serve as a mediator that allows the automated system to learn and adapt to the characteristics of undesirable particles without requiring human operators. This intermediary approach enables the automated system to achieve human-level detection accuracy while maintaining high sorting throughput
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
This approach enhances the consistency and reliability of automated sorting systems, reducing costs and improving the efficiency of particle inspection and sorting by allowing for periodic qualification during standard operating conditions, thereby ensuring fewer undesirable particles are introduced into the final product.
Implementation Method 1
a conformal surface layer is formed on the particles to produce seed particles and thereby impart to the seed particles at least one property with a value or range of values that is the same as or about the same as a value or range of values of a corresponding property of undesirable particles
Data Source
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AI summary
A method for qualifying an automated process for inspecting and sorting particles through the production and use of seed particles is disclosed. In one embodiment, seed particles are produced by forming a conformal surface layer on a plurality of particles, thereby imparting them with at least one property whose value or range of values is the same as or about the same as a value or range of values of a corresponding property of undesirable particles. By introducing a predetermined quality of seed particles, their detection and removal by the automated sorting system can be used to periodically calibrate and qualify the sorting system without interrupting the manufacturing operations or introducing actual undesirable particles into the process stream. The production and use of seed particles to qualify an automated sorting system is particularly well-suited for use with Ti sponge sorting operations.