Pellet Sorting Lighting System Shadow Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional lighting systems for pellet analysis suffer from the appearance of various shadows due to interactions between pellets and illumination light, making it difficult to distinguish actual foreign particles from normal pellets through image analysis.
Innovation Solution
A lighting system with a plurality of illumination devices arrayed convexly towards objects to be sorted, irradiating light in all directions, including upward, downward, left, and right directions, and featuring illumination devices with different light intensities and controlled light directions to minimize shadow formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional single-direction lighting system is used for pellet imaging, then the system structure is simple, but shadows appear due to light-pellet interactions making it impossible to accurately distinguish foreign particles from normal pellets
Solution Approach 1:
The lighting system is divided into multiple independent illumination devices arranged in different spatial positions and orientations. Each illumination device emits light from a specific direction, and together they provide comprehensive multi-directional illumination that eliminates shadows while maintaining manageable system complexity through modular design
Solution Approach 2:
The patent transitions from single-direction (one-dimensional) illumination to multi-directional (three-dimensional) illumination by arranging light sources in various spatial positions and orientations. This dimensional expansion of the lighting system enables complete coverage of the pellet surface from all angles, eliminating shadow formation and enabling accurate foreign particle detection
2Reliability
If illumination light is applied to transparent and opaque pellets, then the pellets can be imaged, but various forms of shadows appear due to reflection, absorption, and refraction interactions
Solution Approach 1:
The patent applies preliminary anti-action by pre-positioning multiple illumination devices in strategic locations that anticipate and counteract shadow formation. The multi-directional light sources are arranged beforehand to illuminate all potential shadow zones, preventing shadow interference before it can affect the imaging and analysis reliability
Solution Approach 2:
Different illumination devices are positioned to provide localized illumination tailored to specific regions of the pellets. Each light source addresses specific optical interaction challenges (reflection, absorption, refraction) in its designated zone, with optimized intensity and angle to minimize shadow formation while maintaining reliable pellet analysis
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 lighting system effectively suppresses shadow formation, allowing for accurate analysis and distinction of foreign particles from normal pellets, regardless of their shape or color.
Implementation Method 1
a plurality of first illumination sources irradiating first illumination light
Implementation Method 2
interactions (including reflection, absorption, and refraction) between pellets and illumination light
Implementation Method 3
interactions (including reflection, absorption, and refraction) between pellets and illumination light
Implementation Method 4
interactions (including reflection, absorption, and refraction) between pellets and illumination light
Data Source
AI summary
The present invention relates to a lighting system for analyzing pellet and a foreign matter sorting apparatus comprising same. The lighting system for analyzing pellet comprises: a casing (100) which has an inner space and a through-hole (110) formed in the upper surface; an upper lighting assembly (200) which includes a plurality of first light sources (210) each irradiating first illumination light, and a first light source holder (220) which fixes the first light sources (210); and a lower lighting assembly (300) comprising a plurality of second light sources (310) each irradiating second illumination light, and a second light source holder (320) which fixes the plurality of second light sources (310), wherein the lower lighting assembly (300) is arranged on the inner lower portion of the casing (100) and irradiates the second illumination light toward the lower and side portions of the objects to be sorted (P).