Excavation Recognition Using 3D Distance Measurement
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Solution Overview
Problem
Existing excavation machines face difficulties in recognizing excavation objects on plane surfaces, especially during automatic operations, as they lack depth information and struggle to differentiate between excavation and non-excavation regions, leading to inefficient and potentially erroneous excavation processes.
Innovation Solution
An external recognition apparatus is integrated into excavation machines, comprising a three-dimensional distance measurement device, a plane surface estimation unit, and an excavation object region recognition unit, which uses stereo cameras or laser radars to acquire distance information, estimate plane surfaces, and recognize excavation regions, enabling accurate identification of areas to be excavated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a measuring instrument is used to measure distance to an excavation object, then distance information can be acquired, but it is difficult to recognize excavation objects on plane surfaces and differentiate between excavation and non-excavation regions
Solution Approach 1:
The patent transitions from two-dimensional distance measurement to three-dimensional spatial recognition by introducing depth information acquisition. The recognition unit generates three-dimensional data including depth, enabling the system to distinguish excavation regions from non-excavation regions on plane surfaces, thereby resolving the information loss about depth.
2Ease of operation
If remote control operation is performed without depth information, then operator experience and skill are required for accurate excavation, but this reduces ease of operation and increases operational errors
Solution Approach 1:
The patent implements a feedback mechanism where the recognition unit continuously acquires three-dimensional information about the excavation site and provides this data to the operator during remote control operations. This real-time feedback enables operators to make accurate excavation decisions without relying solely on experience, thereby improving both ease of operation and reliability.
3Productivity
If automatic excavation is implemented, then operational efficiency is improved, but accurate recognition of excavation regions on plane surfaces is required to prevent erroneous excavation
Solution Approach 1:
The patent enables the excavation machine to perform self-recognition of excavation regions through the integrated recognition unit. The system automatically acquires three-dimensional information, identifies excavation areas on plane surfaces, and determines excavation positions without continuous human intervention, thereby achieving both high productivity and precise recognition for automatic excavation operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise recognition and display of excavation regions, enhancing operator support during remote control and automatic operations, reducing errors and improving operational efficiency by providing clear visualizations of excavation and non-excavation areas.
Implementation Method 1
a three-dimensional distance measurement device configured to acquire distance information in a three-dimensional space
Implementation Method 2
a three-dimensional distance measurement device configured to acquire distance information in a three-dimensional space which includes a region to be excavated
Data Source
AI summary
An external recognition apparatus and an excavation machine using the external recognition apparatus, the external recognition apparatus including: a three-dimensional distance measurement device configured to acquire distance information in a three-dimensional space in a predetermined, region which is under a hydraulic shovel and which includes a region to be excavated by the hydraulic shovel; a plane surface estimation unit configured to estimate a plane surface in the predetermined region based on the distance information; and an excavation object region recognition unit configured to recognize the region to be excavated in the predetermined region based on the plane surface and the distance information.