Work Vehicle Auto-Run Control During GNSS Accuracy Switching
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Solution Overview
Problem
The switching between different positioning methods like DGNSS and RTK for work vehicles 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 manages the automatic run of work vehicles when switching between positioning methods with different accuracies, using a positioning processing unit and a run processing unit to control the vehicle's operation based on position information and method accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the positioning method is switched from DGNSS to RTK to improve positioning accuracy, then the positioning accuracy is improved, but the work vehicle's self-recognized position shifts significantly causing unstable behavior
Solution Approach 1:
The system performs preliminary detection to determine whether the work vehicle is ready for automatic run before allowing positioning method switching. This preliminary check prevents switching during critical operation phases, thereby avoiding position shifts and unstable behavior while still allowing accuracy improvement when conditions are appropriate.
Solution Approach 2:
The system continuously monitors the work vehicle's automatic run readiness status and uses this feedback to control whether positioning method switching is permitted. This feedback mechanism ensures that switching only occurs when it will not cause unstable behavior, resolving the contradiction between accuracy improvement and stability maintenance.
2Measurement precision
If the positioning method is switched between DGNSS and RTK during automatic run, then positioning accuracy can be optimized, but work accuracy deteriorates due to position shift
Solution Approach 1:
The system performs preliminary detection of automatic run readiness before permitting positioning method switching. This ensures that switching only occurs when the work vehicle is in a stable state, preventing work accuracy deterioration while still allowing positioning accuracy optimization when appropriate.
Solution Approach 2:
The system uses feedback from the automatic run readiness determination to control positioning method switching. This feedback loop ensures that switching decisions are made based on real-time operational status, maintaining work accuracy while enabling accuracy optimization when conditions permit.
Data Source
AI summary
A positioning processing unit positions a position of a work vehicle by a given positioning method based on a satellite signal received from a satellite . A run processing unit causes the work vehicle to automatically run based on position information showing the work vehicle position positioned by the positioning processing unit . Further, the run processing unit prohibits the automatic run, when the work vehicle 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.