Mulching Unit Camera Monitoring for Stubble Shredding

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing mulching units for agricultural machines face challenges in maintaining efficient stubble shredding across varying ground conditions, leading to high energy consumption, wear, and potential pest infestation due to incomplete residue removal, as they lack real-time monitoring and adjustment capabilities.

Innovation Solution

A camera system is integrated with the mulching unit to monitor work quality and adjust working parameters, including the mulching unit's height and contact pressure, based on image analysis to ensure effective stubble shredding and prevent pest infestation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the mulching roller clearance from the ground is increased to avoid contact on firmer soil, then wear and energy consumption are reduced, but the stubble remaining near the ground becomes longer and mulching quality deteriorates

Engineering Contradiction:
Improveenergy consumptionVSAvoidmulching quality
Core Design Contradiction:
Loss of energyVSManufacturing precision

Solution Approach 1:

The patent applies dynamics by making the mulching roller clearance adjustable during operation. The clearance can be dynamically changed based on soil conditions - increased on firmer soil to reduce wear and energy consumption, and decreased on softer soil to maintain mulching quality. This dynamic adjustment resolves the contradiction between energy efficiency and mulching effectiveness.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the physical parameter of mulching roller clearance based on operating conditions. By monitoring soil firmness and adjusting the clearance parameter accordingly, the system optimizes both energy consumption and mulching quality for different soil conditions, resolving the technical contradiction.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If the mulching roller clearance is decreased to improve mulching quality on softer soil, then stubble shredding effectiveness is improved, but the mulching roller may come into contact with the ground causing high energy consumption and wear

Engineering Contradiction:
Improvemulching qualityVSAvoidenergy consumption
Core Design Contradiction:
Manufacturing precisionVSLoss of energy

Solution Approach 1:

The system dynamically adjusts the mulching roller clearance based on real-time soil condition monitoring. When softer soil is detected, the clearance is decreased to improve mulching quality, but before ground contact occurs, the system alerts the operator to adjust parameters, preventing excessive wear and energy consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by monitoring soil conditions and mulching results, then using this information to adjust the mulching roller clearance. This closed-loop control ensures optimal mulching quality while preventing ground contact that would cause excessive wear and energy consumption.

Inventive Principle:
Principle #23Feedback

3Loss of energy

If the mulching roller clearance is increased to reduce wear and energy consumption, then operational costs are reduced, but pest prevention effectiveness deteriorates due to longer remaining stubble

Engineering Contradiction:
Improveoperational costsVSAvoidpest infestation risk
Core Design Contradiction:
Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The system changes the clearance parameter based on soil firmness detection. On firmer soil, increased clearance reduces operational costs, while on softer soil, decreased clearance ensures proper stubble shredding for pest prevention. This adaptive parameter adjustment resolves the contradiction between operational efficiency and pest control effectiveness.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces continuous manual monitoring and adjustment with an automated optical monitoring system that detects stubble length and soil conditions, then automatically adjusts clearance parameters. This substitution ensures optimal pest prevention while minimizing operational costs without requiring continuous operator intervention.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Manufacturing precision

If manual monitoring and adjustment of mulching unit settings is performed, then mulching quality can be maintained, but time and labor resources are consumed

Engineering Contradiction:
Improvemulching qualityVSAvoidmonitoring time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs self-service by automatically monitoring soil conditions and mulching results through optical sensors, then autonomously adjusting the mulching roller clearance to maintain optimal mulching quality. This eliminates the need for continuous manual monitoring and adjustment, saving time and labor resources while maintaining high mulching quality.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements automated feedback control where sensors continuously monitor mulching results and soil conditions, and the control system automatically adjusts parameters to maintain optimal performance. This closed-loop system maintains high mulching quality without requiring operator time for monitoring and adjustment.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4477047A1Mulching unit and agricultural machine equipped with same
Publication Date: 2024.12.18 CLAAS SELBSTFAHRENDE ERNTEMASCHINEN GMBH
  • EP4477047A1 patent drawingFigure 1
  • EP4477047A1 patent drawingFigure 2
  • EP4477047A1 patent drawingFigure 3

AI summary

A mulching unit (7) for shredding stubble (6) left in a field during harvesting, for attachment to a self-propelled agricultural machine (1), or an agricultural machine (1) with a mulching unit (7) for shredding stubble (6) left in a field, comprises a camera system with at least one camera (15', 15") arranged to monitor the performance of the mulching unit (7). A control unit (18) of the mulching unit (7) is connected to the camera system to receive images generated by the at least one camera (15', 15") and to adjust the operating parameters of the mulching unit (7) during operation based on an analysis of the images.