Swing Body Imaging Unit Position Correction for Work Machine Measurement
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Solution Overview
Problem
Existing measurement systems for work machines do not effectively measure the surrounding shape over a wide range, as they lack the capability to accurately capture and process data from swinging operations.
Innovation Solution
A measurement system comprising an imaging unit, position detection unit, and three-dimensional position calculation unit, which calculates the position of the imaging unit during swinging operations to determine the surrounding shape of a work machine, using common portions between images and correcting for swing angles to achieve accurate three-dimensional positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the imaging unit is mounted on the swing body to capture surrounding shapes, then the measurement range is improved, but the position calculation accuracy deteriorates due to swinging motion
Solution Approach 1:
The system performs preliminary actions by detecting the swing angle during swinging operation and calculating the imaging unit position based on this detected swing angle before final three-dimensional position determination. This preliminary calculation of position based on swing angle compensates for the movement during imaging, resolving the contradiction between wide measurement range and position accuracy.
2Productivity
If the system captures images during swinging operation to measure surrounding shape, then the productivity is improved, but the measurement precision deteriorates due to motion blur and position variation
Solution Approach 1:
The system uses feedback by detecting the swing angle during swinging operation and using this information to calculate and correct the imaging unit position. This feedback mechanism allows the system to maintain measurement precision while capturing images during swinging operation, thereby improving productivity without sacrificing accuracy.
3Measurement precision
If the system uses multiple images and common portion extraction to calculate imaging unit position, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The system extracts only the necessary common portions between multiple images to calculate the imaging unit position, rather than processing all image data. This extraction approach maintains measurement precision by focusing on relevant features while reducing device complexity by eliminating unnecessary processing steps.
Data Source
AI summary
A measurement system includes an imaging unit mounted to a swing body of a work machine to image a shape around the work machine, a position detection unit which determines a position of the swing body, an imaging unit position calculation unit which calculates a position of the imaging unit when the imaging unit performs imaging while the swing body swings, and a three-dimensional position calculation unit which determines a three-dimensional position around the work machine during the imaging, on the basis of a position of the imaging unit calculated by the imaging unit position calculation unit.