Component Mounting Machine Illumination Selection
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Solution Overview
Problem
In component mounting machines, setting an appropriate illumination condition for component presence/absence inspection is challenging due to variations in board patterns and component types, and different mounting positions, making it difficult for operators to determine accurately whether a component is present or absent.
Innovation Solution
The machine includes an illumination section that provides multiple illumination conditions, an imaging section to capture images, and a control section that calculates similarities between component-absent and component-present states under different illumination conditions, automatically setting the optimal illumination condition for inspection based on similarity calculations, ensuring high accuracy without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the operator manually sets the illumination condition for component inspection, then the inspection can be performed, but it is difficult to set an appropriate illumination condition for any component due to variations in board patterns and component types
Solution Approach 1:
The system performs self-service by automatically selecting the optimal illumination condition based on image similarity calculations. The control section captures images under multiple illumination conditions, calculates similarity between component-absent and component-present states, and autonomously determines the best illumination condition without requiring operator intervention or expertise in illumination settings.
Solution Approach 2:
The system changes illumination parameters by capturing images under multiple different illumination conditions and selecting the condition that produces the lowest similarity value. This parameter-based approach allows the system to adapt to different board patterns and component types by evaluating which illumination condition provides the best contrast for detecting component presence or absence.
2Adaptability or versatility
If multiple illumination conditions are provided to accommodate different board patterns and component types, then inspection accuracy can be maintained across variations, but the system complexity increases
Solution Approach 1:
The illumination section is designed with multi-functionality to provide multiple illumination conditions using a single integrated system. The control section serves multiple functions by both capturing images under different illumination conditions and calculating similarity metrics to determine the optimal condition, eliminating the need for separate systems for each function.
Solution Approach 2:
The system dynamically selects the illumination condition based on real-time image analysis. Rather than requiring manual configuration for each component type, the system adaptively determines the best illumination condition by calculating similarity between component-absent and component-present images, allowing the illumination parameters to change dynamically based on the inspection requirements.
Data Source
AI summary
A component mounting machine of the present disclosure includes a control section to cause an illumination section and an imaging section to capture an image of a component-absent state and an image of the component-present state under multiple different illumination conditions, calculate a similarity between the image of the component-absent state and the image of the component-present state for each illumination condition, and set an illumination condition for inspection used in execution of inspection of the target component, based on the similarity. The control section sets an illumination condition in which the similarity is lowest, among the multiple different illumination conditions, as the illumination condition for inspection, when setting the illumination condition for inspection based on the similarity.