Work Machine Target Position Estimation Using Gaze and Posture Overlap
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Solution Overview
Problem
Existing technologies for estimating the target position of a working machine operator are insufficiently accurate due to reliance on gaze direction alone, which does not account for the operator's posture, manipulation, and environmental context, particularly in complex working environments like construction sites.
Innovation Solution
A working machine target position estimating apparatus that combines posture detection, manipulation information, sight detection, and distance information to estimate the target position of the leading end device by setting a prospective locus region and a gaze region, and determining their overlap to accurately predict the operator's intended target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If target position estimation is performed only on the basis of sight direction, then the device complexity is reduced, but the measurement precision deteriorates
Solution Approach 1:
The patent combines multiple detection systems (sight detection, posture detection, manipulation detection, and distance detection) into a unified target position estimation system. The controller integrates information from all these sources to determine the operator's intended target position, achieving high accuracy without requiring each individual detection system to be overly complex.
Solution Approach 2:
The controller serves multiple functions: it processes sight direction data, posture information, manipulation inputs, and distance measurements simultaneously to estimate target position. This multi-functional approach allows the system to achieve high measurement precision through a single integrated control unit rather than requiring separate specialized systems for each function.
2Measurement precision
If multiple detection parameters are integrated, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The patent merges multiple detection parameters (sight direction, posture, manipulation, distance) into a single integrated estimation process within the controller. This combining approach achieves high measurement precision while managing device complexity through unified processing rather than separate independent systems.
Solution Approach 2:
The controller acts as an intermediary that receives and processes information from multiple detection sources (sight detection device, posture detection device, manipulation detection device, distance detection device) and produces the final target position estimation. This intermediary role simplifies the overall system architecture by providing a central processing point.
3Measurement precision
If only gaze direction is used for estimation, then the ease of operation is improved, but the measurement precision deteriorates
Solution Approach 1:
The system automatically collects and processes multiple parameters (sight direction, posture, manipulation, distance) without requiring the operator to manually input or adjust settings. The controller autonomously integrates these parameters to estimate target position, maintaining ease of operation while achieving high measurement precision through automatic multi-parameter analysis.
Data Source
AI summary
An operative target position of a leading end device supposed by an operator of a working machine is estimated with high accuracy. The controller calculates a prospective locus region on the basis of respective detection results of a posture detecting part and a manipulation detecting part. The prospective locus region is a region based on a prospective locus along which a leading end device is prospected to shift. The controller calculates a gaze point region on the basis of a detection result of a sight detecting part. The gaze point region is a region based on a gaze point of an operator. The controller sets a target position in a region where the prospective locus region and the gaze point region overlap each other.