Calibration Roller for Real-Time Camera Inspection in Coil Conveying
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Solution Overview
Problem
Existing camera inspection methods in battery production are inefficient as they require suspending production and increasing workload and cost to detect camera location abnormalities, often leading to delayed identification of errors that affect product quality.
Innovation Solution
A roller with calibration sheets arranged on its surface, allowing for real-time camera inspection without interrupting coil conveying, using detection images to determine camera location abnormalities by calculating offset parameters from feature points on the sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional camera inspection methods are used, then camera location abnormalities can be detected, but production must be suspended and inspection workload and cost increase
Solution Approach 1:
The calibration sheet is pre-positioned on the roller surface at locations that will periodically enter the camera field of view during normal operation. This preliminary arrangement enables automatic calibration without requiring separate inspection actions or production suspension.
Solution Approach 2:
The system uses its own operational components (roller rotation, existing camera, calibration sheet) to perform self-diagnosis. The calibration sheet serves as a built-in reference that the camera automatically captures during normal coil conveying, enabling the system to self-monitor without external inspection equipment or production interruption.
2Reliability
If calibration sheets are added for real-time inspection, then camera monitoring can be continuous, but device complexity increases
Solution Approach 1:
The calibration sheet serves multiple functions: it provides geometric reference for camera calibration, acts as a visual marker for location verification, and enables continuous monitoring during normal operation. The existing roller and camera infrastructure is reused, avoiding the need for separate inspection equipment.
Solution Approach 2:
The system monitors changes in the captured calibration sheet image parameters (position, orientation, size) to detect camera location abnormalities. By tracking these parameter variations over time, the system achieves continuous monitoring without complex hardware modifications.
Data Source
AI summary
This application provides a roller, an inspection method for a camera, a camera inspection apparatus, a coil conveying method, a coil conveying apparatus, an electronic device, a computer-readable storage medium, and a computer program product. The roller includes a roller body and a calibration sheet. The roller body includes a roller surface for supporting a coil; the calibration sheet is located on the roller surface of the roller body and avoids the coil, and the calibration sheet is used for inspection of the camera.