Excavator Guide Screen Switching by Detected Work Pattern
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Solution Overview
Problem
Existing machine guidance systems for hydraulic excavators automatically switch between work mode and traveling mode guide screens based on travel operation member inputs, leading to inefficient display of guide screens according to actual work contents, particularly in operations where excavation and travel are alternately performed.
Innovation Solution
A system that uses sensors and a controller to categorize operational data and identify current work patterns, automatically displaying guide screens corresponding to the identified patterns, such as travel, excavation, slope-tamping, or embanking, by analyzing operation content frequency data and posture information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the guide screen is automatically switched based on travel operation member input, then the system responds quickly to operator actions, but the guide screen does not accurately reflect actual work contents in alternating excavation-travel operations
Solution Approach 1:
The system continuously monitors operation lever positions and work implement states, using this feedback to dynamically determine whether to display work mode or traveling mode guide screens. This ensures the displayed information accurately reflects actual work contents rather than simply responding to travel operation inputs.
Solution Approach 2:
The guide screen switching mechanism transitions from a static response-based system to a dynamic state-aware system that continuously adapts display mode based on real-time analysis of operation lever position, work implement state, and detected work patterns.
2Ease of operation
If the traveling mode guide screen is displayed every time the travel operation member is operated, then the system provides immediate feedback for travel operations, but it disrupts work mode display continuity in excavation-travel-alternating operations
Solution Approach 1:
The system dynamically adjusts guide screen display based on detected work patterns. When alternating excavation-travel operations are detected, the system maintains work mode display continuity rather than switching to traveling mode display, thereby preserving productivity information during supplementary travel operations.
Solution Approach 2:
The system changes the display mode parameter based on work pattern detection. Instead of always switching to traveling mode display upon travel operation input, the system modifies this behavior when alternating work patterns are detected, keeping the work mode display active to maintain productivity focus.
3Loss of information
If manual monitoring and switching of guide screens is required, then display accuracy can be maintained, but operator burden increases and real-time information updates are delayed
Solution Approach 1:
The system performs automatic work pattern detection and guide screen mode switching without operator intervention. By monitoring operation lever positions and work implement states autonomously, the system eliminates manual monitoring burden while maintaining accurate real-time display information.
Solution Approach 2:
The system uses continuous feedback from sensors monitoring operation lever position and work implement state to automatically determine appropriate guide screen display mode, replacing manual operator judgment with automated real-time information processing.
4Measurement precision
If multiple sensors and data processing functions are added to accurately identify work patterns, then guide screen accuracy improves, but device complexity increases
Solution Approach 1:
The controller leverages existing sensors (operation lever position sensors, work implement state sensors) already present in the construction machine, making them serve dual purposes: their original functions plus work pattern detection. This avoids adding dedicated sensors while achieving accurate work pattern identification.
Solution Approach 2:
The system merges work pattern detection functionality with the existing control system's data processing capabilities. By combining multiple sensing functions and control functions into an integrated controller, the system achieves accurate work pattern identification without proportionally increasing overall device complexity.
Data Source
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AI summary
A hydraulic excavator includes: a data acquiring section (33) that acquires operation content frequency data in a designated period based on output values output from a plurality of sensors (30, 31, 32) that sense a plurality of parameters to serve as indicators of operation contents performed via an operation device (17); a storage section (34) that stores a plurality of guide screens (39 to 43) each corresponding to one of a plurality of work patterns of the hydraulic excavator (1); a work identifying section (35) that searches actual result data in the storage section (34) for actual result data that matches or is similar to the operation content frequency data acquired by the data acquiring section (33) in terms of operation contents and frequency thereof, and that identifies a current work pattern based on a work pattern allocated to actual result data related to a result of the search; and a display device (29) that displays a guide screen corresponding to the work pattern identified by the work identifying section (35) among the plurality of guide screens (39 to 43).