Work Vehicle Positioning Mode Switching for RTK-DGPS Travel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional automatic travel systems for work vehicles, such as tractors, face inefficiencies and accuracy issues when positioning failures occur due to obstacles, leading to decreased work efficiency and accuracy, particularly in applications requiring high positional accuracy like seeding work.
Innovation Solution
An automatic travel system that switches between high-accuracy RTK positioning and lower-accuracy DGPS positioning based on a set work mode, allowing the vehicle to continue or stop travel when positioning state degrades, thereby maintaining work efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the work vehicle continues automatic travel with inertial navigation when positioning failure occurs, then work efficiency is maintained, but work accuracy deteriorates
Solution Approach 1:
The system dynamically switches between different work modes (first work mode and second work mode) based on the positioning state. When positioning fails, the system can transition from a mode that stops travel to a mode that continues travel, or vice versa, allowing adaptive response to changing conditions rather than uniform behavior
Solution Approach 2:
The system changes the operational parameters of automatic travel based on positioning state. By modifying the travel continuation parameter (stop vs. continue) according to positioning availability and work mode settings, the system optimizes the balance between efficiency and accuracy for different working conditions
2Manufacturing precision
If the work vehicle stops automatic travel when positioning failure occurs, then work accuracy is maintained, but work efficiency decreases
Solution Approach 1:
The system provides dynamic control by allowing the work mode to be changed during operation. The operator can switch between first work mode (stop on positioning failure) and second work mode (continue on positioning failure) based on real-time requirements, making the system adaptable rather than static
Solution Approach 2:
The system modifies the travel behavior parameter (stop/continue) based on the combination of positioning state and work mode setting. This parameter change allows the system to optimize between accuracy and efficiency depending on whether high precision or continuous operation is prioritized
3Measurement precision
If the system uniformly stops automatic travel when positioning state degrades, then work accuracy is preserved, but productivity decreases
Solution Approach 1:
The system dynamically adjusts travel behavior based on positioning state and work mode. Rather than uniform stopping, the system can continue travel in the second work mode when positioning degrades, maintaining productivity while accepting reduced positioning accuracy when appropriate
4Productivity
If the system uniformly continues automatic travel with inertial navigation when positioning state degrades, then productivity is maintained, but positioning accuracy deteriorates
Solution Approach 1:
The system changes the operational parameter (stop/continue travel) based on positioning state and work mode configuration. This allows selective continuation of travel with degraded positioning accuracy only when the second work mode is set, rather than uniform continuation in all cases
Data Source
AI summary
A positioning processing unit measures the position of a work vehicle by a predetermined positioning method on the basis of a GNSS signal received from a satellite. A travel processing unit causes the work vehicle to travel automatically on the basis of position information of the work vehicle. A switching processing unit can switch between an RTK method and a DGPS method. A setting processing unit sets the work mode of the work vehicle to either a work accuracy preferential mode or a work continuity preferential mode. The switching processing unit switches between the RTK method and the DGPS method on the basis of the work mode and the positioning state.