Foreign Object Inspection Device for Liquid Contamination Type Identification
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Solution Overview
Problem
Existing foreign object inspection devices struggle to identify the type of foreign object detected in liquid within containers, making it difficult to determine the contamination route, especially in production line settings where quick identification is crucial.
Innovation Solution
A foreign object inspection device equipped with detection means to identify foreign objects and their types from continuously captured images of containers, and display control means to output the type of detected foreign objects to a display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If only foreign object detection is implemented without type identification, then the inspection system remains simple, but the ability to identify contamination routes and prevent recurrence is insufficient
Solution Approach 1:
The patent transitions from single-image inspection to multi-image sequential inspection, adding the time dimension to the inspection process. By capturing multiple images at different time points and analyzing the movement trajectories of detected objects, the system can distinguish between bubbles (which move upward due to buoyancy) and foreign objects (which may move differently or remain stationary), thereby identifying foreign object types without significantly increasing hardware complexity
Solution Approach 2:
The system uses image copying and comparison techniques, where multiple images of the same liquid container are captured and compared. By analyzing the differences and movement patterns between these image copies, the system can identify foreign object types based on their movement characteristics, avoiding the need for complex additional sensing hardware
2Measurement precision
If foreign object type identification is added to the inspection system, then contamination route identification capability is improved, but the processing complexity and time required for analysis increases
Solution Approach 1:
The system performs preliminary actions by capturing multiple images in rapid succession before the foreign object moves significantly or before production line speed becomes a constraint. By pre-capturing the movement trajectory data through sequential imaging, the system enables later type identification without adding significant inspection time, as the images are captured during normal production flow
Solution Approach 2:
The patent replaces complex mechanical analysis systems with image processing and computational analysis. Instead of using sophisticated mechanical sensors or manual inspection methods to identify foreign object types, the system uses computer vision algorithms to analyze movement patterns in sequential images, reducing both hardware complexity and inspection time
Data Source
AI summary
A foreign object inspection device includes a detection means and a display control means. The detection means detects a foreign object existing in liquid and the type of the foreign object from a plurality of images obtained by continuously capturing a container in which the liquid is contained. The display control means outputs the type of the detected foreign object to a display device.