U-Turn Route Selection for Autonomous Work Vehicle Coverage
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Solution Overview
Problem
Conventional autonomous work travel systems for work vehicles fail to rationally select U-turn travel routes, leading to potential damage from low turn radii and inefficiencies due to high turn radii, and do not allow for dynamic adjustment of travel patterns based on site conditions and user preferences.
Innovation Solution
A travel route management system that includes an area setting unit and a route element selecting unit to determine U-turn travel routes based on intervals between travel route elements, allowing for selection of appropriate turn routes and patterns according to site conditions and user preferences, and a device that recalculates travel route elements during work to optimize route efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the overall travel route is calculated by taking various conditions into account (optimizing computational load), then the work efficiency is improved, but the computation time increases and delays the start of work travel
Solution Approach 1:
The patent divides the travel route into multiple route elements (straight travel route elements and U-turn travel route elements) that can be independently selected and optimized. This segmentation allows the system to pre-calculate and store multiple route element options with different characteristics (turn radius, length, position), enabling efficient assembly of optimized routes without重新计算 entire routes, thus improving work efficiency while reducing computation time.
Solution Approach 2:
The patent performs preliminary calculation and classification of multiple U-turn travel route elements before actual work travel begins. Different types of U-turn route elements (first type with larger turn radius, second type with smaller turn radius) are pre-calculated and stored with their respective characteristics. During work travel, the system simply selects from these pre-prepared options based on current conditions, avoiding time-consuming real-time optimization while maintaining high work efficiency.
2Area of stationary object
If a U-turn travel route with a small turn radius is used, then the space required for U-turn is reduced, but the ground surface may be damaged
Solution Approach 1:
The patent provides different types of U-turn travel route elements with different local characteristics suitable for different situations. First type U-turn route elements have larger turn radii to protect ground surface, while second type U-turn route elements have smaller turn radii to save space. The system selects the appropriate type based on local conditions such as ground surface sensitivity and available space, achieving local optimization rather than applying a uniform solution.
Solution Approach 2:
The patent changes the turn radius parameter of U-turn route elements to create different types. By providing route elements with varying turn radius parameters (larger for ground protection, smaller for space efficiency), the system can adapt to different operational requirements and environmental conditions, balancing ground surface protection with space utilization.
3Object-affected harmful factors
If a U-turn travel route with a large turn radius is used, then the ground surface is protected, but the space required for U-turn and work efficiency are reduced
Solution Approach 1:
The patent applies different U-turn route element types in different locations based on local requirements. In areas where ground surface protection is critical, first type U-turn route elements with larger radii are used. In areas where space is constrained or ground is more resilient, second type U-turn route elements with smaller radii improve work efficiency. This localized approach optimizes both ground protection and productivity.
4Productivity
If the travel route is calculated in advance covering the entire work site, then the overall route is optimized, but the system cannot adapt to changing site conditions during work
Solution Approach 1:
The patent creates a dynamic route selection system where multiple U-turn route element options are pre-calculated and stored, but the actual route is dynamically assembled during work travel based on real-time conditions. The system can switch between different types of U-turn route elements (first type or second type) depending on current site conditions, providing both pre-planned optimization and real-time adaptability.
Data Source
AI summary
A travel route management system includes an area setting unit that sets a work site to an outer peripheral area SA and an area CA to be worked on an inner side of the outer peripheral area SA, and a route element selecting unit that sequentially selects a next travel route element to be traveled on next, from among multiple mutually-parallel travel route elements, the travel route elements constituting a travel route that covers the area CA to be worked. The route element selecting unit selects a U-turn travel route for moving from a travel route element serving as a movement origin to a next travel route element serving as a movement destination, the selection being made on the basis of an interval between the movement origin and the movement destination.