Air Seeder Vent Valve Closed-Loop Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Air seeders face challenges in maintaining optimal seed and fertilizer delivery pressure during planting, as increased air pressure can cause seeds/fertilizer to bounce out of the furrow, and existing solutions like the SeedVU diffuser are limited by requiring pre-setting and inability to adjust to changing conditions.
Innovation Solution
A closed-loop feedback control system is implemented for the air seeder manifold tower, utilizing pressure sensors, particle sensors, and actuators to dynamically regulate air flow, ensuring consistent seed/fertilizer delivery by adjusting the amount of air exiting the tower based on real-time pressure and flow measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If increased air pressure is used to plant more quickly, then productivity is improved, but seeds/fertilizer may impact the furrow with too great a force and bounce out, resulting in lower yield
Solution Approach 1:
The system employs a closed-loop feedback control mechanism where pressure sensors continuously monitor air pressure in the secondary distribution system and manifold tower, and particle sensors detect seed flow conditions. This real-time feedback enables the controller to dynamically adjust the vent valve position via an actuator, maintaining optimal pressure levels that prevent seed bounce-out while supporting high-speed planting operations.
Solution Approach 2:
The invention transitions from a static, pre-set diffuser valve to a dynamic control system where the vent valve position continuously adjusts based on real-time sensor data. The actuator modifies the vent opening degree on-the-fly to adapt to changing planting conditions, ensuring consistent seed delivery pressure throughout the planting process.
2Stress or pressure
If a pre-set diffuser valve is used to vent excess air, then pressure control is improved, but the system cannot adjust to changing conditions during planting, resulting in inconsistent seed delivery
Solution Approach 1:
The system employs a closed-loop feedback control mechanism where pressure sensors continuously monitor air pressure in the secondary distribution system and manifold tower, and particle sensors detect seed flow conditions. This real-time feedback enables the controller to dynamically adjust the vent valve position via an actuator, maintaining optimal pressure levels that prevent seed bounce-out while supporting high-speed planting operations.
Solution Approach 2:
The control system automatically monitors and adjusts vent valve positioning without manual intervention. The sensors continuously detect system conditions, and the controller autonomously commands the actuator to maintain optimal pressure, eliminating the need for operators to manually adjust settings during planting operations.
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
The system ensures precise control of seed/fertilizer delivery, preventing bouncing and ensuring accurate placement in the trench, thereby improving planting efficiency and yield by adapting to changing conditions during planting.
Implementation Method 1
A pressure sensor in the manifold tower provides feedback to a controller
Implementation Method 2
The controller commands an actuator to adjust a vent valve in the manifold tower to control air flow
Implementation Method 3
Seeds and optionally fertilizer are fed from hoppers into the primary distribution system and are conveyed by air to the secondary distribution system
Data Source
AI summary
In one embodiment, an air seeder tower includes a valve with an actuator, and a closed loop feedback control with a sensor to control actuation of the valve to control air flow out of the air seeder vent tower.