Top Steel Sheet Position Detection for Stable Magnet Lifting
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Solution Overview
Problem
Existing methods struggle to accurately detect the position of the uppermost plate member among stacked plate members, particularly when they are thin, as they integrate upper and lower sheets, making it difficult to identify the target for lifting.
Innovation Solution
A plate member position detection device that includes an image acquisition unit to capture the stacked plate members and a computing unit to detect the uppermost plate member's position by comparing template information, ensuring accurate alignment of the lifting device with the gravitational center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image processing is used to detect step shapes in stacked steel sheets, then the installation position can be calculated, but upper and lower steel sheets are detected in an integrated manner, making it difficult to detect only the uppermost steel sheet position
Solution Approach 1:
The patent segments the detection task by creating a template that represents only the uppermost steel sheet, separating it from the integrated detection of multiple sheets. This allows the system to focus on detecting only the relevant target (uppermost sheet) rather than processing all sheets as a single unit.
Solution Approach 2:
The patent performs preliminary action by creating a template image of the uppermost steel sheet in advance, before the actual detection process. This pre-prepared template is then used for comparison with the captured image, enabling efficient and accurate identification of the uppermost sheet position without complex real-time processing.
2Reliability
If the gravitational center of the target steel sheet deviates from the center of the lifting magnet, then the steel sheet might be dropped, but accurately grasping the gravitational center position requires complex detection means
Solution Approach 1:
The patent creates a template copy of the uppermost steel sheet that includes information about its gravitational center position. This template is compared with the actual captured image to identify the sheet's position and gravitational center, providing accurate alignment data for the lifting magnet without requiring complex detection systems.
Solution Approach 2:
The patent introduces a template as an intermediary between the captured image and the gravitational center position calculation. The template serves as a reference model that facilitates the determination of the uppermost sheet's gravitational center, enabling accurate positioning for safe lifting operations.
Data Source
AI summary
A plate member position detection device can accurately detect the position of an uppermost plate member as a target to be lifted from among stacked plate members. At the time when an uppermost steel sheet among stacked steel sheets is lifted by a crane, an image of the stacked steel sheets including the whole uppermost steel sheet is acquired by an image acquisition unit. Then, the position of the uppermost steel sheet is detected by comparing template information with the image. Even in a case where steel sheets with small plate thicknesses are stacked, it is possible to accurately detect the position of the uppermost steel sheet as a target to be lifted. In a case where the uppermost steel sheet is adsorbed and lifted by an adsorption mechanism such as a lifting magnet, it is possible to secure stability of the steel sheet adsorbed and lifted.