Dot Peen Mark Verification Using Laser Scanning and Illumination
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Solution Overview
Problem
Existing methods for verifying the quality of two-dimensional matrix dot-peened marks on objects face challenges due to low contrast and inadequate lighting, leading to unreliable verification results, especially when camera imaging fails to capture sufficient images.
Innovation Solution
The proposed solution involves using a combination of a camera to produce digital images and a laser displacement sensor to generate three-dimensional scanned data for mark verification, ensuring reliable evaluation by enhancing contrast and overcoming imaging issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a camera is used to produce digital images for mark verification, then the verification process can be automated and performed quickly, but the verification reliability deteriorates due to low contrast and inadequate lighting conditions
Solution Approach 1:
A light source is introduced as an intermediary element between the camera and the mark to improve illumination conditions. The light source provides adequate lighting that enhances the contrast of the mark features, enabling the camera to capture reliable images for verification while maintaining automated high-speed operation.
2Ease of operation
If camera imaging is used to verify marks, then the process is simple and fast, but the verification accuracy deteriorates when marks have low contrast
Solution Approach 1:
The light source is configured to illuminate the mark in a manner that enhances contrast between the mark features and the background surface. By optimizing the lighting conditions, the visual contrast of the mark is improved, enabling the camera to accurately detect and verify mark features even on surfaces with inherently low contrast.
3Device complexity
If only camera imaging is used for verification, then the device complexity is low, but the verification reliability deteriorates under poor lighting conditions
Solution Approach 1:
A light source is added as a minimal complexity intermediary to resolve the lighting and contrast issues. This simple addition provides adequate illumination and enhances mark visibility, significantly improving verification reliability without substantially increasing system complexity.
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 provides more reliable verification of dot-peened marks by ensuring accurate digital image processing and three-dimensional data analysis, effectively addressing contrast and lighting problems that cause marks to fail verification.
Implementation Method 1
scanning a two-dimensional matrix dot peen mark disposed on a surface of an object with a laser displacement sensor to generate three-dimensional scanned data for the mark
Data Source
AI summary
Methods and mark verification systems for evaluating the quality of a two-dimensional matrix dot peen mark on an object are provided. An exemplary embodiment of the methods includes scanning a two-dimensional matrix dot peen mark disposed on a surface of an object with a laser displacement sensor to generate three-dimensional scanned data for the mark, the mark including a plurality of dots disposed in a plurality of rows and columns on the surface; and determining whether the mark passes a verification test based on the scanned data.