Hydraulic Excavator 3D Measurement From Continuous Target Tracking
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Solution Overview
Problem
The manual attachment of measurement targets to pins in work machines for calculating dimensions is complicated and lacks accuracy, hindering precise information acquisition for information-oriented constructions.
Innovation Solution
An information obtaining system and method that includes a work machine with a target portion attached to a movable portion, utilizing a position measurement unit to continuously track the target portion's movement relative to a base portion, and an information obtaining unit to derive three-dimensional information based on this track.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement targets are manually attached to each pin position to calculate dimensions, then dimension information can be obtained, but the attachment work becomes complicated and attachment accuracy cannot be ensured
Solution Approach 1:
The patent uses optical copying technology to capture the spatial coordinates of pin positions through imaging. Instead of manually attaching measurement targets, the system optically copies the pin positions by capturing images and extracting coordinate information from the image data, thereby eliminating complex manual attachment work while maintaining measurement accuracy
Solution Approach 2:
The patent replaces the mechanical manual attachment process with an optical measurement system. The total station instrument optically measures the positions of pins by capturing images and processing coordinate data, substituting the mechanical attachment of measurement targets with an optical field-based measurement approach
2Measurement precision
If measurement targets are manually attached to each pin position, then dimension information can be obtained, but the measurement process becomes time-consuming
Solution Approach 1:
The patent performs preliminary setup by establishing a measurement coordinate system and calibrating the optical measurement system before actual measurement. The total station instrument is pre-configured with instrument height and target height parameters, and the measurement program is prepared in advance, enabling efficient data collection without repeated setup during the measurement process
Solution Approach 2:
The patent implements continuous measurement by automatically capturing images of pin positions and continuously processing the coordinate data. The system maintains continuous operation by sequentially measuring multiple pins without interruption, processing image data in real-time to extract spatial coordinates, and continuously calculating dimension information until all required measurements are complete
Data Source
AI summary
Information on a work machine is more accurately obtained through simplified works. An information obtaining system includes a hydraulic excavator, a target portion, a position measurement unit, and an information obtaining unit. The hydraulic excavator includes a revolving unit and a work implement movable relatively to the revolving unit. The target portion is attached to the work implement. The position measurement unit continuously measures positions of the target portion that moves with movement of the work implement relative to the revolving unit. The information obtaining unit obtains three-dimensional information on the hydraulic excavator based on a track of the target portion obtained by measurement.