Camera Sight Apparatus for Load Centering Precision
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Solution Overview
Problem
Precise positioning of a hoist trolley above loads, especially with long containers, is challenging and often requires repeated attempts, even when a container grapple is close, due to the limitations of existing camera-based systems.
Innovation Solution
A load handling apparatus equipped with a camera mounted on a hoist trolley that generates image data for precise positioning, using a sight apparatus with a pattern of lines to center the load within the camera view, allowing for improved precision and rate of load handling by aligning the gripping means with the load's sides and adjusting for different container heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera-based positioning system is used for the hoist trolley, then the load handling operation can be automated and monitored, but the positioning precision is insufficient especially for long containers requiring repeated positioning attempts
Solution Approach 1:
The sight apparatus displays visual indicators (lines and markers) that change position and appearance based on the hoist trolley's alignment status with the container. These visual cues provide precise feedback to the operator about positioning accuracy, enabling single-attempt positioning even for long containers by showing exact alignment status through the camera viewfinder.
2Loss of time
If the hoist trolley is positioned close to the container for picking up, then the handling time is reduced, but the positioning precision remains insufficient without repeated attempts
Solution Approach 1:
The sight apparatus provides real-time visual feedback through the camera system, showing the operator the exact position of the hoist trolley relative to the container. The displayed lines and markers indicate alignment status, allowing the operator to make precise adjustments in a single positioning attempt rather than requiring multiple retries, thus reducing time loss while maintaining high precision.
3Measurement precision
If a sight apparatus with multiple lines is displayed in the camera view, then the precision of load centering is improved, but the device complexity increases
Solution Approach 1:
The sight apparatus uses a standardized pattern of lines and markers that can be universally applied to containers of various sizes and heights. The same camera-based display system serves multiple functions: showing horizontal alignment, vertical positioning, and centering status simultaneously through a single integrated interface, avoiding the need for multiple separate devices.
Data Source
AI summary
Image data is generated from a load stack in the operating area of a load handling apparatus. The image data includes a sight apparatus having several lines that are set in relation to each other such that the lines correspond to at least two sides of the lowest load in the load stack and at least two sides of a load set on top of the lowest load in the load stack.