Terrain-Sensing Residue Chopper Control for Agricultural Harvesters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional agricultural harvesters discharge finely chopped crop residue onto fields with varying terrain, leading to soil loss and excessive residue deposition in flatter areas due to wind and water erosion, hindering crop growth.
Innovation Solution
An agricultural harvester equipped with a residue chopper, spreader, and actuator controlled by a computing system that adjusts residue size based on field topography using terrain sensors to deposit larger residue on hillsides and smaller residue on flat surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the residue chopper processes crop residue into fine particles, then the residue is easier to spread evenly, but the residue becomes prone to movement by wind and water erosion on hillsides
Solution Approach 1:
The system applies different residue processing qualities to different locations on the field. The controller adjusts chopper operation based on terrain sensor data, producing coarser residue on hillsides (where erosion is a concern) and finer residue on flat areas (where even distribution is prioritized). This local differentiation resolves the contradiction by matching residue characteristics to specific environmental conditions.
Solution Approach 2:
The residue processing system transitions from a static, uniform chopping operation to a dynamic, variable operation. The controller continuously adjusts chopper blade speed or configuration based on real-time terrain sensor feedback, enabling the system to adapt residue size to changing topographical conditions throughout the field, thereby preventing erosion on slopes while maintaining good distribution on flats.
2Ease of operation
If the residue chopper processes crop residue into fine particles, then the residue spreads more easily across the field, but excessive residue accumulates in flat areas impeding crop growth
Solution Approach 1:
The system implements location-specific residue processing by analyzing terrain data and adjusting chopper operation accordingly. Flat areas receive finer, more evenly distributed residue, while hillsides receive coarser residue that doesn't easily migrate. This prevents the accumulation problem in flat areas by controlling residue characteristics at the source based on destination terrain.
Solution Approach 2:
The terrain sensor system provides continuous feedback about field topography to the controller, which then adjusts chopper operation in real-time. This closed-loop feedback mechanism ensures that residue processing parameters are optimized for each specific area, preventing over-deposition in flat regions while maintaining adequate coverage where needed.
3Device complexity
If a uniform residue processing system is used across the entire field, then the system operation is simple, but it cannot address varying terrain conditions leading to soil loss and poor residue distribution
Solution Approach 1:
The system performs self-adjustment based on automatic terrain sensing and controller processing. The terrain sensors continuously scan the field topography, the controller automatically interprets the data and determines optimal chopper settings, and the system self-corrects without operator intervention. This automation maintains operational simplicity while dramatically improving adaptability to varying terrain conditions.
Solution Approach 2:
The system replaces manual mechanical adjustment of residue processing parameters with an automated electronic control system. Instead of requiring operators to physically adjust chopper settings based on visual terrain assessment, the system uses electronic sensors and controllers to automatically optimize processing parameters, reducing operational complexity while enhancing terrain adaptability.
Data Source
AI summary
A system for controlling the operation of an agricultural harvester includes a residue chopper configured to process crop residue removed from harvested crop material. Additionally, the system includes an actuator configured to control the operation of the residue chopper. Moreover, the system includes a terrain sensor configured to generate data indicative of a topographical parameter of the field. Additionally, the system includes a computing system communicatively coupled to the terrain sensor. The computing system is configured to determine the topographical parameter of the field based on the terrain sensor data and control the operation of the actuator to control the operation of the residue chopper based on the determined topographical parameter of the field.