Combine Header Automation for Even Crop Distribution
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Solution Overview
Problem
Current methods for controlling harvesting parameters on combine harvesters are complex and not sufficiently accurate, making it difficult to maintain an even distribution of crop material, leading to reduced productivity and increased manual intervention.
Innovation Solution
A method involving sensors to detect crop properties and transmit signals to actuators for automated control of harvesting parameters, ensuring a consistent and high-volume crop flow through the feeder, even at high speeds and with wide headers, using mechanical, ultrasonic, radar, or optical sensors to adjust auger speed, stripper plate clearance, and feeder opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the width of the header is increased to increase crop cutting capacity, then productivity is improved, but the difficulty of maintaining even crop distribution in the feeder increases
Solution Approach 1:
The header is divided into multiple independently controllable sections or zones, each with its own actuators that can adjust local harvesting parameters. This segmentation allows differential control across the width of the header, enabling even crop distribution despite the large overall width.
Solution Approach 2:
The system dynamically adjusts harvesting parameters in real-time based on sensor feedback from the feeder. Actuators continuously modify header parameters such as reel speed, cutter bar height, or crop engagement force to maintain even crop distribution as the combine moves through the field.
Solution Approach 3:
Sensors monitor crop distribution in the feeder and provide feedback signals to the control system. The control system processes this information and sends control signals to actuators on the header, creating a closed-loop feedback system that automatically corrects distribution imbalances.
2Productivity
If the forward speed of the combine is increased to improve productivity, then harvesting efficiency is improved, but the difficulty of maintaining continuous and even crop flow increases
Solution Approach 1:
The system dynamically adjusts header parameters in real-time to match the forward speed of the combine. As speed increases, the system modifies crop engagement, transport mechanism speeds, and feeder parameters to maintain continuous and even crop flow despite the higher velocity.
Solution Approach 2:
The control system changes multiple parameters simultaneously - including header height, reel rotational speed, cutter bar speed, and feeder conveyor speeds - to optimize crop flow characteristics at different forward speeds, ensuring continuity even at high harvesting rates.
3Manufacturing precision
If manual adjustments are made to control harvesting parameters, then crop distribution can be corrected, but time is lost and labor intensity increases
Solution Approach 1:
The system performs self-adjustment through automated control. Sensors detect crop distribution conditions, the control system processes this information, and actuators automatically modify header parameters without operator intervention. This eliminates the need for manual adjustments while maintaining precise crop distribution control.
Solution Approach 2:
A closed-loop feedback system continuously monitors crop distribution and automatically corrects imbalances. The rapid feedback cycle detects and responds to distribution issues in real-time, eliminating the time delays associated with manual detection and adjustment by the operator.
4Productivity
If automated control systems are implemented to maintain even crop distribution, then productivity is improved, but device complexity increases
Solution Approach 1:
A single centralized control system performs multiple functions: it receives signals from various sensors, processes crop distribution data, determines optimal parameter adjustments, and controls multiple actuators across the header and feeder. This multi-functional approach consolidates complexity into one coordinated system rather than distributing it across multiple independent systems.
Solution Approach 2:
The control system acts as an intermediary that coordinates between sensors and actuators. It translates sensor measurements into appropriate control signals, managing the complexity of interactions between multiple components through a centralized decision-making layer.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases productivity, reduces operator intervention, and adapts to changing conditions, achieving a smooth and constant crop flow to the processing device, enhancing overall harvesting efficiency.
Implementation Method 1
providing at least one sensor for detecting at least one crop property while the crop is in the feeder, each sensor being configured for outputting at least one crop property signal
Implementation Method 2
using mechanical, ultrasonic, radar, or optical sensors to adjust auger speed, stripper plate clearance, and feeder opening
Implementation Method 3
using mechanical, ultrasonic, radar, or optical sensors to adjust auger speed, stripper plate clearance, and feeder opening
Data Source
AI summary
A method for automatically controlling a harvesting parameter on a header of a combine harvester. The combine harvester includes the header, a feeder, and a downstream processing device. Crop is cut by the header, transferred to the feeder, and then transported to the processing device. The method includes steps of detecting at least one crop property in the feeder by at least one sensor and outputting at least one corresponding crop property signal; receiving the at least one crop property signal by a control unit; processing the at least one crop property signal in the control unit; transmitting at least one control signal by the control unit to at least one actuator on the header; and executing the at least one control signal in the at least one actuator so as to automatically control the harvesting parameter on the header