Work Machine Evacuation Route Control Around Other Machines
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Solution Overview
Problem
Existing work machine control systems fail to consider the traveling routes of dump trucks and other work machines in a work area, leading to inefficiencies when evacuating to avoid contact, and do not minimize work efficiency loss during such maneuvers.
Innovation Solution
A work machine control system with a controller that includes an action management section to set a target position and generate a target route, considering evacuation possible positions based on the work range of other machines, allowing the work machine to select an optimal evacuation position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the work machine evacuates to a predetermined place to avoid contact with other work machines, then safety is improved, but work efficiency deteriorates due to evacuation time and route changes
Solution Approach 1:
The system performs preliminary analysis of evacuation routes and destination selection before actual evacuation occurs. The action management section pre-calculates multiple candidate evacuation routes and pre-selects optimal evacuation destinations based on current work status and machine positions, so that when evacuation is needed, the machine can immediately execute the pre-planned route without delay for route calculation or destination selection.
Solution Approach 2:
The evacuation destination is not fixed but dynamically selected based on real-time conditions. The system continuously monitors the positions of other work machines and dynamically adjusts the evacuation destination selection. The action management section re-evaluates and updates the optimal evacuation destination as the situation changes, making the evacuation process adaptive rather than static.
2Loss of time
If the work machine follows a simple evacuation route to a fixed destination, then evacuation time is reduced, but the risk of contact with other work machines increases
Solution Approach 1:
The evacuation process is segmented into multiple candidate routes rather than a single fixed route. The system generates multiple evacuation route options and selects the optimal one based on real-time conditions. This segmentation allows the machine to have alternatives ready, reducing evacuation time while maintaining safety through route optimization.
Solution Approach 2:
The system continuously monitors the positions of other work machines and uses this feedback to adjust evacuation route selection. The action management section receives real-time position information, evaluates it against the candidate routes, and selects the route with minimum contact risk. This feedback mechanism ensures that the chosen route avoids other machines while remaining efficient.
3Reliability
If the work machine frequently evacuates to avoid other work machines, then contact avoidance is improved, but overall work productivity deteriorates
Solution Approach 1:
The system changes the parameter of evacuation destination from a fixed predetermined location to a dynamically selected location based on multiple factors including current work status, position of other machines, and work range information. By optimizing the evacuation destination selection, the system minimizes unnecessary evacuations and reduces the frequency of evacuation events, thereby maintaining contact avoidance while preserving overall productivity.
4Reliability
If the work machine uses complex route planning to avoid other work machines, then safety is improved, but system complexity and computation time increase
Solution Approach 1:
The system performs preliminary generation of multiple candidate evacuation routes before evacuation is actually needed. The action management section pre-calculates and stores several possible evacuation routes based on the work area layout and typical machine positions. When evacuation becomes necessary, the system only needs to select from the pre-generated candidates rather than calculating new routes from scratch, reducing computation time while maintaining comprehensive safety analysis.
Data Source
AI summary
An action management section 211 acquires a work instruction 230, which includes a final target position, and a current position of a work machine 100 to set a target position, a route planning section 212 generates a target route 240 between the current position and the target position, an operation generation section 213 causes the work machine 100 to travel in accordance with the target route 240, and upon receiving an evacuation instruction 250 including evacuation possible positions based on a work range of another work machine different from the work machine 100, the action management section 211 decides an evacuation position from among the evacuation possible positions based on the work range of the other work machine and at least one of the current position and final target position of the work machine 100 to set it to the target position.