Work Vehicle Travel Path Control Using Multiple Reference Lines
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Solution Overview
Problem
Existing automatic travel systems for work vehicles require frequent adjustment operations to set new reference lines, leading to increased workload and reduced efficiency, especially when traveling in directions not parallel to the initial reference path.
Innovation Solution
The system includes a storage unit for multiple reference lines, a travel path generation unit that creates parallel paths based on these reference lines, and an automatic travel control unit that enables the work vehicle to automatically travel along these parallel paths, reducing the need for manual adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system stores multiple reference lines and generates parallel paths automatically, then the work efficiency is improved and workload is reduced, but the device complexity increases
Solution Approach 1:
The system performs preliminary actions by automatically generating multiple parallel paths based on a single reference line before the work vehicle needs to travel. The travel path generation unit creates these paths in advance, eliminating the need for manual adjustment operations when changing travel directions, thus improving work efficiency without requiring frequent user interventions.
Solution Approach 2:
The travel path generation unit is designed with multi-functionality to generate parallel paths in various directions (front, rear, left, right) from a single reference line. This universal path generation capability allows the system to handle different travel scenarios without requiring separate reference lines for each direction, reducing the need for manual adjustments while maintaining manageable system complexity.
2Ease of operation
If the system requires manual adjustment operations to set new reference lines for different travel directions, then the system remains simple, but the workload on the user increases and work efficiency decreases
Solution Approach 1:
The system implements self-service by automatically generating parallel travel paths based on the work vehicle's current position and orientation. The travel path generation unit autonomously creates the necessary path information without requiring manual adjustment operations from the user, thereby reducing workload while maintaining ease of operation. The system serves itself by computing multiple travel directions from a single reference line.
3Extent of automation
If the system generates multiple parallel paths automatically, then the need for manual driving operations is reduced, but the computational requirements and system complexity increase
Solution Approach 1:
The automatic path generation process is segmented into distinct directional categories (front, rear, left, right parallel paths). The travel path generation unit handles each direction independently by applying specific offset calculations to the reference line, breaking down the complex task of generating all possible travel paths into manageable segments. This segmentation approach enables automatic travel capability while keeping the computational complexity organized and controllable.
Data Source
AI summary
An automatic travel system is provided with a storage unit that stores a first reference line and a second reference line; a travel path generation unit that generates parallel paths, each of which is parallel to the first reference line or the second reference line; and an automatic travel control unit that causes a work vehicle to travel automatically along the parallel paths generated by the travel path generation unit.