Egg Candling Sensor Glare Reduction via Segmented Illumination
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Solution Overview
Problem
Conventional egg candling systems face challenges in reliably distinguishing between fertilized and unfertilized eggs due to glare phenomena caused by varying light intensities, leading to false information and inefficient sorting processes, especially when empty cells or rotten eggs are present, resulting in waste and financial losses.
Innovation Solution
Implementing a method of visiometric examination that uses multiple successive stages of illumination with different doses to avoid sensor dazzling, where the first stage detects empty cells and records their coordinates, and the second stage discriminates between fertilized and unfertilized eggs by adjusting exposure time and illumination intensity, allowing for precise differentiation without illuminating empty cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single high-intensity illumination is used to detect egg states, then the detection speed is improved, but sensor dazzling occurs leading to false information
Solution Approach 1:
The illumination process is divided into multiple sequential stages with different intensity levels. The first stage uses high-intensity illumination to quickly identify empty cells, while subsequent stages use progressively lower intensities to detect fertilized and unfertilized eggs, preventing sensor overwhelming and ensuring reliable detection at each stage.
Solution Approach 2:
Empty cells are detected and recorded in advance during the first illumination stage before the subsequent egg state detection stages. This preliminary identification allows the system to exclude empty cell locations from later high-precision detection, improving overall system reliability and efficiency.
2Reliability
If multiple illumination stages are used to avoid sensor dazzling, then detection reliability is improved, but processing time increases
Solution Approach 1:
The detection process is segmented into targeted stages focusing on specific egg states at each intensity level. By dividing the illumination into purposeful stages rather than using a single prolonged exposure, the system achieves reliable multi-state detection without excessive time loss.
Solution Approach 2:
Empty cells are identified and recorded in the first stage, allowing subsequent stages to focus only on occupied cells. This preliminary filtering reduces the total detection time while maintaining reliability across all egg states.
3Measurement precision
If empty cells are illuminated in all stages, then complete detection is achieved, but sensor dazzling causes false information for neighboring cells
Solution Approach 1:
Empty cell locations are extracted and identified during the first illumination stage. These identified empty cell coordinates are then used to exclude specific locations from subsequent illumination stages, removing the source of harmful glare while maintaining detection accuracy for all other cells.
Solution Approach 2:
Different illumination strategies are applied to different spatial locations based on their detected state. Empty cells are illuminated only in the first stage, while occupied cells receive progressive illumination in subsequent stages. This localized quality control prevents glare-induced errors while maintaining complete detection coverage.
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 reliability of egg state detection, reduces waste, and improves processing efficiency by avoiding glare-induced errors, enabling accurate sorting and marking of eggs while maintaining high-speed processing.
Implementation Method 1
a radiation source emits an incident luminous flux which individually illuminates each of the eggs... the detector means sensitive to the emergent flux... determine its composition according to the modification induced by each of them
Implementation Method 2
These photo-detectors convert the captured light into electrical signals
Data Source
Figure 1
Figure 2~5
AI summary
The invention concerns a system applicable to an installation for candling eggs (1), to determine the presence of fertilized eggs in the cells of the egg crate grid (4a) moving on a conveyor (2). Row by row, the analyzing device synchronously monitors the light emission on the eggs of the row and detection of the attenuated light of emerging beams. The monitoring comprises at least two close cycles of light emission. During the first cycle, which is of short duration to avoid blooming of the detectors of the detecting device (3), the coordinates of possible empty cells in a row are determined and stored. During the second cycle, which is of longer duration, the coordinates of fertilized eggs of said row are determined and stored. The egg candling installation (1) advantageously comprises means for marking the eggs (5), depending in particular on whether they are fertilized or not.