Hoisting Appliance Position and Profile Measurement Correlation
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Solution Overview
Problem
Current hoisting appliance systems face delays in data acquisition and processing, leading to slow and inefficient object location determination, which hampers automation and requires manual intervention due to inaccuracies and the need for multiple movement phases.
Innovation Solution
A method for correlating position and profile measurements using a centralized control unit that synchronizes data from position sensors and profile scanners, accounting for time delays in measurement, communication, and processing, and employs a calibration process to refine measurements, allowing for accurate object positioning and dimensioning at higher speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors slowly move over the object to perform measurements, then measurement precision is improved, but productivity deteriorates due to time-consuming operations
Solution Approach 1:
The patent applies dynamics by making the measurement system adaptable to different speeds. The control unit dynamically adjusts measurement parameters and correlates position data from multiple speeds to achieve accurate object location determination without being constrained to slow, stationary measurements. This allows the system to operate at higher speeds while maintaining precision through computational correction.
2Measurement precision
If multiple movement phases are performed to acquire sufficient data, then measurement precision is improved, but loss of time increases due to repeated stopping and starting
Solution Approach 1:
The patent merges the scanning phase and manipulation phase into a single continuous operation. The control unit processes position and profile scanner data in real-time, allowing the trolley to move continuously while measurements are taken and processed. This eliminates the need for separate movement phases and repeated stopping/starting, reducing time loss while maintaining accurate object location determination.
Solution Approach 2:
The control unit performs preliminary processing of position and profile data during the measurement phase itself, rather than requiring separate processing phases. By correlating measurements and determining object locations in real-time during continuous movement, the system prepares all necessary information beforehand, eliminating delays associated with post-measurement analysis and multiple operational phases.
3Productivity
If measurements are performed at higher speeds, then productivity is improved, but measurement precision deteriorates due to motion-induced errors
Solution Approach 1:
The control unit implements feedback by continuously correlating position sensor data with profile scanner measurements and using this information to correct for motion-induced errors. The system monitors the relationship between trolley position and measured object profiles, dynamically adjusting measurements to compensate for speed-related inaccuracies and maintain precision even during high-speed operation.
Solution Approach 2:
The patent applies parameter changes by adjusting measurement parameters based on operating speed. The control unit modifies how position and profile data are correlated depending on the trolley's speed, using different computational approaches for different speed ranges. This allows the system to optimize measurement accuracy for each speed condition while maintaining high productivity through faster operations.
Data Source
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AI summary
The invention relates to a method for correlating position and profile measurements of an object to be manipulated by a hoisting appliance. The method being implemented in a centralized control unit configured for controlling the hoisting appliance. The method includes receiving position sensor data (301) from at least one position sensor, said sensor being configured to perform position measurements of the hoisting appliance within the hoisting area. The method further includes receiving profile scanner data (302) from at least one profile scanner located on the hoisting appliance, the profile scanner being configured to perform profile measurements of an object located below the hoisting appliance. Determining a speed history (303) of the hoisting appliance and refining a position of the object to be manipulated based on the position data received from the position sensor and to account for a resulting time delay. The method further includes refining 304 and/or correcting the position data of the object based on the determined speed of the hoisting appliance and associated position correction. The method further includes correlating (305) the refined position and the profile data to calculate object dimensions.