Agricultural Robot Headland Allocation for Collision-Free Turns

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Solution Overview

Problem

Existing agricultural robotic systems require complex communication and coordination between machines, leading to inefficiencies and potential collisions, especially in managing headlands and U-turns, which complicates the management of a fleet of autonomous agricultural machines.

Innovation Solution

A method that subdivides a plot into distinct work zones and headland sections, allowing temporary and exclusive allocation of these sections to individual robots, managed by a central control system, enabling independent operation and collision avoidance without direct communication between robots.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If autonomous robotic vehicles communicate constantly to monitor positions and coordinate movements, then collision avoidance is improved, but communication complexity and data flow requirements increase

Engineering Contradiction:

Improvecollision avoidanceVSAvoidcommunication system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The field is segmented into multiple working zones with dedicated access paths, allowing robots to operate independently in predefined areas without requiring constant communication for position monitoring and collision avoidance

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Working zones and access paths are predetermined and assigned to robots before operation begins, eliminating the need for real-time communication during operation while maintaining collision avoidance through pre-planned spatial separation

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If master-slave coordination is used to synchronize robot movements, then coordinated operation is improved, but system dependency and communication requirements increase

Engineering Contradiction:

Improvecoordinated operationVSAvoidsystem dependency

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The field is divided into multiple working zones that can be independently managed, allowing each robot to operate autonomously in its assigned zone without requiring master-slave coordination

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each robot independently manages its own operations within its assigned working zone and access paths, eliminating the need for master-slave dependency while maintaining coordinated operation through spatial separation

Inventive Principle:

Principle #25Self-service

3Area of stationary object

If robots share common headland areas for U-turns and maneuvers, then space utilization is improved, but collision risk and management complexity increase

Engineering Contradiction:

Improveheadland space utilizationVSAvoidcollision risk

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The common headland area is segmented into multiple dedicated access paths, with each path assigned to a specific robot or group of robots, maintaining high space utilization while eliminating collision risks through dedicated access

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the headland area have different functions assigned to them (dedicated access paths for different robots), allowing efficient space utilization while maintaining safety through localized quality control

Inventive Principle:

Principle #3Local quality

4Productivity

If working zones are reassigned in real-time based on robot progress, then productivity is improved, but management complexity and communication requirements increase

Engineering Contradiction:

Improvework completion efficiencyVSAvoidzone management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

Working zones are dynamically reassigned to robots based on their progress and availability, allowing the system to adapt to changing conditions and maintain high productivity without requiring complex real-time communication infrastructure

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4216703B1Method for working a plot of land by at least two agricultural robots

Publication Date: 2026.04.01 KUHN SA

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AI summary

The invention relates to a method for working a plot of land simultaneously by at least two agricultural robots (R1, R2... Ri) operating autonomously and independently, in accordance with instructions and/or commands transmitted by a common central management and control system (SC), said method consisting in subdividing said plot of land (P) to be worked into at least two distinct work zones (Z1, Z2... Zj) in the form of strips having respective ends at the two opposite extremities thereof, and into a turn zone (F, F') extending along the various opposite ends of said strips (Z1, Z2... Zj). The method is characterised in that it further consists in subdividing each turn zone (F, F') into turn portions (PF1, PF1'; PF2, PF2'; PFj, PFj '), each of which faces and continues from one of the two ends of one of the strips forming work zones (Z1, Z2... Zj), and assigning at least a fraction of a turn portion (PF1, PF1'; PF2, PF2'; PFj, PFj '), temporarily and exclusively, to the robot (R1, R2... Ri) that either is about to pass or is in the process of passing through the turn portion (PF1, PF1'; PF2, PF2'... PFj, PFj ') in question, or is going to start, is in the process of completing or going to complete work in the work zone (Z1, Z2... Zj) associated with said turn portion (PF1, PF1'; PF2, PF2'... PFj, PFj ') in question.