Container Tilting and Marker Tracking for Foreign Matter Detection
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Solution Overview
Problem
Existing techniques struggle to accurately distinguish foreign matter from air bubbles and stains on a container's surface during imaging, as these stationary contaminants are difficult to differentiate from moving foreign matter.
Innovation Solution
A grasping device that tilts a container filled with liquid while a marker moves in conjunction, allowing a camera to capture images for analysis, and a determination apparatus that tracks and distinguishes between moving and stationary objects based on their movement relative to the marker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If imaging is performed in a stationary state, then the imaging process is simple, but it is difficult to distinguish foreign matter from scratches and stains on the container
Solution Approach 1:
The container is tilted dynamically during imaging to create relative motion between foreign matter and container surface defects. This dynamic imaging approach allows the determination apparatus to distinguish between foreign matter that moves with the container and scratches/stains that remain fixed on the container surface, thereby improving detection accuracy without requiring overly complex stationary imaging systems
2Measurement precision
If a marker is installed to move with the container, then movement tracking becomes possible, but the device structure becomes more complex
Solution Approach 1:
A marker is introduced as an intermediary element that moves synchronously with the container during tilting. The marker serves as a reference point that helps the determination apparatus track container motion and distinguish between foreign matter (which moves with the container and marker) and surface defects (which remain fixed relative to the container). This intermediary approach enables accurate object distinction while keeping the overall device structure manageable
Data Source
AI summary
A grasping device includes: a grasping unit configured to grasp a container filled with liquid; a tilting unit configured to at least tilt the container in a state where the grasping unit grasps the container; and a maker installed at a part tilting in synchronism with the container when the container tilts and configured to move in conjunction with movement of the container.