Construction Machine Bucket Shape Acquisition via Cross-Section Extraction
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Solution Overview
Problem
Existing methods for calculating bucket shape information from three-dimensional data in construction machines require high data handling and processing loads, making them inefficient.
Innovation Solution
A bucket information acquisition device that includes a distance distribution acquisition unit, a reference cross section extraction unit, an approximate line identification unit, and a bucket shape calculation unit, which reduces data handling and processing load by calculating bucket shape information based on approximate lines and cross sections rather than direct three-dimensional data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bucket shape information is calculated directly from three-dimensional data, then measurement precision is improved, but data handling load and processing load increase
Solution Approach 1:
The patent extracts only the necessary cross-sectional information from the three-dimensional bucket data at a specific location, rather than processing the entire three-dimensional dataset. This extraction approach obtains the essential shape information needed for work amount calculation while significantly reducing the data volume that requires processing.
Solution Approach 2:
The patent divides the three-dimensional bucket shape into a two-dimensional cross section at a predetermined location. This segmentation transforms the complex three-dimensional data processing into a simpler two-dimensional processing task, maintaining measurement precision for the critical cross-sectional area while reducing overall processing complexity.
2Measurement precision
If three-dimensional data is processed to obtain bucket shape information, then measurement precision is improved, but processing load increases
Solution Approach 1:
The patent extracts only the necessary cross-sectional information from the three-dimensional bucket data at a specific location, rather than processing the entire three-dimensional dataset. This extraction approach obtains the essential shape information needed for work amount calculation while significantly reducing the data volume that requires processing.
Solution Approach 2:
The patent transforms three-dimensional bucket shape data into two-dimensional cross-sectional data by selecting a specific plane for measurement. This dimensionality reduction simplifies the processing requirements while maintaining the accuracy needed for calculating bucket work amount, as the cross-section provides sufficient information for the intended application.
Data Source
AI summary
A bucket information acquisition device for acquiring information regarding the shape of a bucket that rotates about a rotational center axis along a predetermined moving plane in a construction machine includes: a distance distribution acquisition unit that acquires the three-dimensional distance distribution of the bucket with respect to a reference point; a reference cross section extraction unit that extracts, from the distance distribution acquired by the distance distribution acquisition unit, a reference cross section which is a cross section of the bucket obtained by cutting the bucket along a plane parallel to the moving plane; an approximate line identification unit that identifies, based on the reference cross section, an approximate line approximating the reference cross section composed of a straight line and a curve; and a bucket shape calculation unit that calculates bucket shape information regarding the shape of the bucket based on the approximate line.