Automated End Divider Control for Corn Harvester Ear Loss
Solution Overview
Problem
Agricultural harvesters face the challenge of corn ears bouncing off the corn head during harvesting, leading to loss, as existing end dividers on corn heads are manually operated and lack precise control, resulting in inefficient prevention of ear loss over the sides.
Innovation Solution
An agricultural system with end dividers that are automatically controlled by an actuator and a controller system, which receives inputs from various mechanisms such as operator commands, sensors, and environmental detectors to move the dividers between retracted and raised positions, thereby preventing corn ears from being lost over the sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual operation of end dividers is used, then the structure is simple, but the control precision and responsiveness are poor leading to ear loss
Solution Approach 1:
The end divider system transitions from a static manual configuration to a dynamic automated system. Sensors continuously monitor corn ear position and bouncing behavior, while actuators automatically adjust end divider angles and positions in real-time during harvesting operations, enabling adaptive response to changing conditions
Solution Approach 2:
The system implements closed-loop feedback control where sensors detect corn ear position, bouncing motion, and loss events, transmit this information to the control system, which then adjusts actuator commands to optimize end divider positioning. This continuous feedback cycle ensures precise control and minimizes ear loss
Solution Approach 3:
Manual mechanical operation of end dividers is replaced with an automated electromechanical system. Sensors, actuators, and a control system work together to eliminate the need for manual intervention, providing more precise and consistent control of end divider positioning throughout the harvesting process
2Productivity
If manual adjustment of end dividers is used, then the system is simple to operate, but productivity and harvesting efficiency are reduced
Solution Approach 1:
The end divider control system operates autonomously without requiring continuous operator intervention. The automated system monitors harvesting conditions, processes sensor data, and adjusts end divider positions independently, allowing the harvesting operation to proceed at full productivity without manual distraction
Solution Approach 2:
The system proactively adjusts end divider positions before corn ears are likely to be lost. By continuously monitoring bouncing behavior and predicting potential loss events, the control system preemptively positions end dividers to prevent ear loss, improving productivity without waiting for problems to occur
3Loss of substance
If end dividers are continuously raised to prevent ear loss, then ear loss is minimized, but crop damage from unharvested crops increases
Solution Approach 1:
The end divider system dynamically adjusts its position based on real-time harvesting conditions rather than maintaining a fixed raised position. During active harvesting, end dividers are positioned to contain corn ears and prevent loss. When harvesting is complete in a section, the system automatically lowers end dividers to allow clean passage over already-harvested crops, preventing damage while maintaining ear containment during active harvesting
Solution Approach 2:
The system implements periodic adjustment cycles where end dividers are raised during active harvesting intervals and lowered during transitions between harvest sections. This periodic action pattern ensures ear loss prevention during critical harvesting periods while minimizing crop damage during non-harvesting intervals
Data Source
AI summary
An agricultural system includes a head with an end divider and an actuator that moves the end divider between a raised position and a retracted position. An actuator controller receives an input and automatically controls the actuator to move the end divider to a position based upon the input.