Cultivated Land Work Vehicle Replenishment Routing During U-Turns
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Solution Overview
Problem
Existing cultivated land work vehicles lack efficient methods for computing emergency travel routes and performing replenishment travel to replenish agricultural material during work travel, leading to inefficiencies and potential wasteful travel when the remaining amount of material falls below a threshold.
Innovation Solution
The vehicle is equipped with a travel route setter, vehicle position computer, and replenishment mode executor to autonomously select and execute replenishment travel modes, including first, second, third, and fourth modes, based on the arrangement of travel routes and the shape of the cultivated land, optimizing travel paths to minimize wasteful distance and ensure efficient replenishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle computes an emergency travel route to a nearby ridge for replenishment, then the vehicle can be replenished with agricultural material, but the travel time increases and work efficiency decreases
Solution Approach 1:
The system performs preliminary actions by computing replenishment positions and preparing agricultural material before actual work is performed. The replenishment position is estimated in the cultivated land boundary area during normal operation, and the required loading amount is calculated based on current material levels and unit input requirements, allowing the vehicle to be ready for replenishment without emergency delays
Solution Approach 2:
The vehicle autonomously determines its own replenishment needs by monitoring remaining agricultural material levels and automatically computing optimal replenishment positions and routes. The system self-manages the replenishment process by selecting appropriate replenishment modes (first mode: reverse into boundary area after reaching starting point; second mode: reverse into boundary area before reaching starting point) without requiring external intervention or emergency stops
2Productivity
If the vehicle performs replenishment travel during work travel, then work efficiency is improved, but the travel path may become wasteful and complex
Solution Approach 1:
The system merges the replenishment travel with the existing work travel by integrating replenishment positions into the boundary area along the periphery of the cultivated land. The vehicle combines its work cycle (circular travel along peripheral area and back-and-forth travel in central area) with replenishment stops at boundary positions, allowing both work and replenishment to occur within a unified travel framework rather than separate emergency trips
Solution Approach 2:
The system dynamically selects between different replenishment modes based on real-time conditions such as remaining material levels, current position in the work cycle, and boundary area geometry. The replenishment mode executor chooses the first mode (reverse after reaching starting point) or second mode (reverse before reaching starting point) adaptively, optimizing the travel path for each specific situation rather than following a fixed pattern
Data Source
AI summary
A cultivated land work vehicle includes a vehicle position computer, a travel controller to control travel of the body based on a vehicle position and target routes, and a replenishment mode executor to execute a replenishment travel mode to replenish the cultivated land work vehicle with agricultural material, during U-turn transition travel. In a first replenishment travel mode, reverse travel into the boundary area is performed after a starting point of the next travel route his reached, and forward travel to the starting point of the next travel route his performed after replenishment work is complete. In a second replenishment travel mode, reverse travel into the boundary area is performed before the starting point of the next travel route is reached, and forward travel to the starting point of the next travel route is performed after the replenishment work is complete.