Inspection Route Planning for Stable Camera Posture
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Solution Overview
Problem
Conventional inspection systems face a decrease in inspection accuracy due to significant posture changes of the camera during external appearance inspection, leading to inconsistent defect positioning on captured images, which increases inspection time.
Innovation Solution
An inspection route generation device and method that calculates an inspection route based on image data, considering both the inspection positions and posture changes of the imaging unit, to minimize movement distance and posture adjustments, thereby optimizing the inspection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a spiral movement trajectory is used to minimize movement amount between inspection areas, then inspection time is reduced, but camera posture change becomes great causing defect position inconsistency
Solution Approach 1:
The patent changes the movement trajectory parameters from a spiral pattern to a pattern that prioritizes camera posture stability. The route determination unit calculates and selects trajectories that minimize posture change amount, even if this results in slightly longer inspection times, thereby maintaining defect position consistency across multiple inspection areas.
2Adaptability or versatility
If the camera images the same face from multiple viewpoints to perform external appearance inspection, then inspection coverage is improved, but posture change amount increases reducing inspection accuracy
Solution Approach 1:
The patent dynamically adjusts the inspection route based on calculated posture change amounts. The system evaluates multiple possible routes and dynamically selects the one that maintains acceptable posture stability while achieving comprehensive inspection coverage, balancing versatility and precision requirements.
3Productivity
If a conventional inspection route is used to reduce inspection time, then productivity increases, but defect positioning accuracy decreases
Solution Approach 1:
The patent introduces a feedback mechanism where the route determination unit calculates posture change amounts for different inspection routes and uses this information to optimize route selection. The system continuously evaluates the trade-off between inspection time and posture stability, selecting routes that maintain acceptable levels of both productivity and positioning accuracy.
Data Source
AI summary
An inspection route generation device generates an inspection route of an external appearance inspection device which performs external appearance inspection on an inspection target based on an image imaged by an imaging unit, and includes: a storage unit which stores inspection position information indicating a plurality of inspection positions at which the imaging unit images the inspection target, and inspection device configuration information indicating a configuration of the external appearance inspection device; and a route determination unit which calculates a route length between respective inspection positions, and a posture change amount of the imaging unit at a time when the imaging unit moves through the plurality of inspection positions, based on the inspection position information and the inspection device configuration information, and determines the inspection route based on the calculated route length and posture change amount.