Real-Time Down-Pressure Control for Agricultural Row Units
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Solution Overview
Problem
Current agricultural systems fail to apply the correct level of down-pressure on row crop planters in real-time, leading to inefficient and improper soil preparation due to delayed responses to changing soil conditions, resulting in decreased crop quality and volume.
Innovation Solution
An agricultural implement with a hydraulic system and sensors that provide real-time down-pressure control, using a towing frame, hydraulic cylinders, controllable pressure control valves, and sensors to adjust pressure based on soil conditions, ensuring optimal pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If current agricultural systems use delayed feedback control based on load cell signals, then the system structure is simpler, but the response time to soil condition changes is delayed, resulting in improper down-pressure application
Solution Approach 1:
The sensor is positioned ahead of the implement to detect soil conditions before the implement reaches them. This preliminary detection allows the control system to prepare and apply the correct down-pressure exactly when needed, eliminating the delayed feedback problem while maintaining reasonable system complexity through proactive rather than reactive control.
2Manufacturing precision
If the implement applies down-pressure based on detected soil conditions after passing over them, then the control mechanism is simpler, but the soil preparation quality decreases due to timing delays
Solution Approach 1:
By positioning the sensor ahead of the implement, the system performs preliminary detection of soil conditions and prepares the appropriate down-pressure settings in advance. This ensures that when the implement reaches the detected soil condition area, the correct pressure is already applied, achieving precise soil preparation without control delays.
3Productivity
If current systems react to soil condition changes after the implement has passed, then the control system is less complex, but crop quality and volume decrease due to inefficient soil preparation
Solution Approach 1:
The sensor positioned ahead of the implement enables preliminary detection of varying soil conditions, allowing the control system to proactively adjust down-pressure settings before the implement reaches different soil types or compacted areas. This proactive control optimizes soil preparation quality throughout the field, improving crop productivity while maintaining reasonable system complexity through straightforward sensor-controller-actuator architecture.
Data Source
AI summary
An agricultural implement includes at least one row unit having a plurality of support members, each of which is pivotably coupled to an attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members, and a plurality of soil-engaging tools, each of which is coupled to at least one of the support members. A plurality of hydraulic cylinders are coupled to the support members for urging the support members downwardly toward the soil. A plurality of controllable pressure control valves are coupled to the hydraulic cylinders for controlling the pressure of hydraulic fluid supplied to the cylinders. A plurality of sensors produce electrical signals corresponding to predetermined conditions, and a controller is coupled to the sensor and the controllable pressure control valves. The controller receives the electrical signals from the sensors and produces control signals for controlling the pressure control valves.