Work Vehicle Auto-Run Control During Positioning Method Switching
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Solution Overview
Problem
The switching between different positioning methods, such as DGNSS and RTK, for a work vehicle results in significant shifts in self-recognized position, leading to unstable behavior and deteriorated work accuracy due to differences in positioning accuracy.
Innovation Solution
An automatic run method and system that prohibits or delays the automatic run when switching between positioning methods of different accuracy, allowing the work vehicle to stop or continue based on threshold conditions or given times to maintain stability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the positioning method is switched to achieve higher positioning accuracy, then the work accuracy should be improved, but the work vehicle's self-recognized position shifts significantly causing unstable behavior
Solution Approach 1:
The system performs preliminary actions by detecting positioning method switching in advance and proactively prohibiting automatic run before the position shift occurs. The run prohibition processing unit detects when the positioning method changes (e.g., from DGNSS to RTK) and immediately prohibits automatic run, preventing the unstable behavior caused by position shifts before they affect work accuracy.
2Productivity
If the automatic run is maintained during positioning method switching, then the productivity is improved, but the work accuracy deteriorates due to position shifts
Solution Approach 1:
The system implements feedback by continuously monitoring the positioning method status and automatically responding to changes. The run prohibition processing unit receives feedback about positioning method switching and automatically adjusts the automatic run state, creating a closed-loop control system that maintains work accuracy while minimizing impact on productivity.
3Adaptability or versatility
If the positioning method is switched frequently to adapt to different environments, then the adaptability is improved, but the behavior stability deteriorates
Solution Approach 1:
The system introduces an intermediary mechanism (run prohibition processing unit) that mediates between the positioning method switching and the automatic run execution. This intermediary detects positioning method changes and temporarily prohibits automatic run, acting as a buffer that allows flexible positioning method switching while maintaining automatic run stability during transitions.
Data Source
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AI summary
[Problem] To provide an automatic run method, an automatic run system, and an automatic run program that can maintain a work accuracy even when a positioning method of a work vehicle is switched. [Solution] A positioning processing unit 181 positions a position of a work vehicle 10 by a given positioning method based on a satellite signal received from a satellite 20. A run processing unit 111 causes the work vehicle 10 to automatically run based on position information showing the work vehicle 10's position positioned by the positioning processing unit 181. Further, the run processing unit 111 prohibits the automatic run, when the work vehicle 10 is ready for the automatic run by a first positioning method, and when the positioning method is switched to a second positioning method which is different in positioning accuracy from the first positioning method.