Overhead Crane Imaging Tracking for Load State Identification
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Solution Overview
Problem
Existing overhead crane monitoring systems are complex due to the need for various sensors, and they often produce rough images when trying to track and display the states of hoisting tools and loads.
Innovation Solution
An overhead crane monitoring system that includes an imaging device installed on the travelling body of the crane, capable of changing its recording direction and zooming, and a control device that tracks and records the hoisting tool based on the recorded images, eliminating the need for multiple sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If various sensors (boom derricking angle detecting means, load detecting means) are installed to accurately identify crane states, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensing functions into a single imaging device. The imaging device captures images that contain information about the hoisting tool position, load position, and crane component states simultaneously, eliminating the need for separate sensors for each measurement.
Solution Approach 2:
The imaging device serves multiple functions: it tracks the hoisting tool, monitors the load, and provides visual feedback about crane operations. This single device performs what previously required multiple specialized sensors, reducing system complexity while maintaining monitoring accuracy.
2Measurement precision
If a boom-type crane system is used with sensor-based tracking, then measurement capability is improved, but ease of operation deteriorates due to complex sensor installation and maintenance
Solution Approach 1:
The imaging device automatically tracks the hoisting tool and load without requiring manual intervention for sensor calibration or adjustment. The system self-adjusts to maintain optimal viewing angles and tracking accuracy, reducing the operational burden on users.
3Adaptability or versatility
If boom-type crane monitoring systems are implemented, then monitoring capability is improved, but adaptability to overhead crane configurations deteriorates
Solution Approach 1:
The imaging device is mounted on the travelling body and can dynamically adjust its position and orientation to track the hoisting tool throughout its range of motion. This dynamic positioning capability allows the system to adapt to overhead crane configurations and maintain continuous monitoring coverage.
Data Source
AI summary
An overhead crane monitoring system is for monitoring an overhead crane. The overhead crane includes a travelling body that travels along rails, a traverse trolley that travels in a direction perpendicular to a travelling direction of the travelling body along the travelling body, and a hoisting device mounted on the traverse trolley. The overhead crane monitoring system includes an imaging device (Camera) and a control device. The imaging device is installed on the travelling body. The imaging device is configured to change a recording direction and configured to zoom. The control device controls the imaging device to track and record a hoisting tool raised and lowered by the hoisting device based on an image recorded by the imaging device. This enables providing an operator with an image appropriate for identifying states of the hoisting tool or hoisted load of the overhead crane.