3D Measuring Device Dynamic Distance Range Adjustment
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Solution Overview
Problem
The existing three-dimensional measuring devices face challenges in accurately processing three-dimensional information due to variations in workpiece height, leading to incorrect grayscale images and complex processing.
Innovation Solution
A three-dimensional measuring device that sets a reference position and margin in the height direction based on acquired three-dimensional information, allowing for the appropriate setting of a distance range for gradation levels, which is then used to convert three-dimensional information into a grayscale image without clipped whites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed distance range is set for grayscale conversion based on the three-dimensional sensor, then the processing is simplified, but the grayscale image becomes incorrect when the workpiece height varies outside the preset range
Solution Approach 1:
The patent applies dynamics by making the distance range adjustable rather than fixed. The control unit dynamically adjusts the distance range based on the actual height of the workpiece, allowing the system to adapt to different workpiece sizes while maintaining measurement accuracy. This resolves the contradiction by enabling the system to switch between simplified fixed-range processing and accurate variable-range processing as needed.
Solution Approach 2:
The patent changes the parameter of distance range from a fixed value to a variable parameter that can be modified based on workpiece characteristics. By allowing the distance range to change according to the workpiece height, the system maintains measurement precision across different workpiece sizes while keeping the processing methodology consistent. This parameter change enables the system to avoid clipped whites and maintain grayscale image accuracy.
2Adaptability or versatility
If the distance range is expanded to accommodate taller workpieces, then more workpiece sizes can be measured, but clipped whites occur and the workpiece shape is not correctly reflected
Solution Approach 1:
The system dynamically adjusts the distance range to match the actual workpiece height rather than using a fixed expanded range. This allows the system to maintain versatility by adapting to different workpiece sizes while preserving manufacturing precision by setting the distance range appropriately for each specific workpiece, avoiding the clipped whites problem that occurs with overly expanded fixed ranges.
Solution Approach 2:
The patent applies local quality by setting the distance range specifically tailored to each workpiece's actual height rather than using a universal expanded range. This localized adjustment ensures that the grayscale conversion is optimized for each specific workpiece, maintaining accurate shape representation while still accommodating various workpiece sizes through individualized parameter setting.
3Measurement precision
If the distance range is reduced to avoid clipped whites, then the grayscale image accuracy is maintained, but taller workpieces cannot be properly measured
Solution Approach 1:
The system uses dynamic adjustment of the distance range based on the detected workpiece height. This allows the system to maintain measurement precision by setting an appropriate distance range for each workpiece while preserving adaptability to handle various workpiece sizes. The control unit automatically adjusts the range to match the actual workpiece dimensions, avoiding both clipped whites and exclusion of tall workpieces.
Solution Approach 2:
The patent implements universality by creating a unified measurement system that can handle various workpiece sizes through a single adjustable distance range parameter. The control unit provides multi-functionality by automatically adapting the grayscale conversion parameters to suit different workpiece heights, allowing the same system to maintain accuracy for both short and tall workpieces without requiring multiple fixed configurations.
Data Source
AI summary
The objective of the present invention is to appropriately set a distance range for calculating a gradation degree, in accordance with the height of a workpiece. This three-dimensional measuring device is provided with: a three-dimensional sensor which images a workpiece to acquire three-dimensional information; a setting unit which, on the basis of the acquired three-dimensional information, sets a reference position serving as a height direction reference in the workpiece, and a height direction margin, relative to the reference position, for a gradation degree of a gradation image, and sets a distance range corresponding to the gradation degree of the gradation image; an image converting unit which converts the acquired three-dimensional information into the gradation image on the basis of the distance range; and a detecting unit which employs the gradation image to obtain, three-dimensionally, the shape and/or the position and attitude of the workpiece.