Autonomous Field Route Generation with Selectable Reference Modes

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Solution Overview

Problem

Conventional methods require manual operation to set reference points for generating autonomous travel routes, making the route generation process burdensome.

Innovation Solution

A route generation method that identifies and executes various modes for generating autonomous travel routes based on predetermined reference points, using a system with a setting and generation processing unit to automate the route creation process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual driving is used to acquire reference start point and reference end point, then the target route can be generated, but the work to generate the target route becomes burdensome

Engineering Contradiction:

Improveease of route generationVSAvoidtime for route generation

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The work vehicle autonomously travels along the target route that was generated using reference points acquired during manual driving. The autonomous travel control executes the generated route without requiring continuous manual operation, allowing the system to serve itself once the route is established.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system performs preliminary manual driving to acquire reference start point and reference end point, then uses these reference points to generate the target route in advance. This preliminary action enables subsequent autonomous travel without requiring repeated manual intervention for route generation.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If multiple reference points are manually set, then accurate target route can be generated, but the complexity of the operation increases

Engineering Contradiction:

Improveprecision of target routeVSAvoidcomplexity of route generation operation

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system extracts only the essential reference points (start point and end point) needed to define the target route, rather than requiring multiple intermediate reference points. This extraction of key elements simplifies the operation while maintaining sufficient precision for route generation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system uses a minimal set of reference points (just start and end points) to generate the complete target route, applying partial action sufficient for the purpose rather than excessive manual positioning of multiple reference points throughout the field.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP4252512B1Route generation method, route generation system, and route generation

Publication Date: 2026.04.29 YANMAR HLDG CO LTD

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AI summary

[Problem] To provide a route generation method, a route generation system, and an autonomous travel program capable of improving workability of work to generate a target route on which a work vehicle travels autonomously in a field. [Solution] A setting processing unit 713 identifies any route generation mode of plural route generation modes, in each of which a target route R is generated on the basis of a reference point that is set at a predetermined location in a field F. Then, a generation processing unit 714 generates the target route R in the identified route generation mode.