Press Wheel Sensor System for Real-Time Seed Spacing Control
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Solution Overview
Problem
Current seed planting technologies fail to accurately predict and adjust for 'set roll' in real-time, leading to irregular seed spacing and reduced crop yield, as they do not account for the rolling motion and final resting place of seeds in the furrow, especially at higher planting speeds.
Innovation Solution
A seed planter equipped with a press wheel and associated sensors that detect the rolling motion and final position of each seed, connected to a computing device to adjust planting speed and ensure ideal spacing, using pressure sensors and flexible surfaces to record seed placement accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the planter operates at high speed to maximize planting efficiency, then productivity increases, but set roll increases causing irregular seed spacing and reduced manufacturing precision
Solution Approach 1:
The system uses sensors to detect the position of each set as it is planted and feeds this information back to the control system. The control system then adjusts the planting mechanism in real-time to compensate for set roll and maintain uniform spacing, allowing high-speed operation without sacrificing precision
Solution Approach 2:
The patent replaces traditional mechanical spacing mechanisms with an electronic control system that uses sensors and actuators to dynamically adjust seed placement. This substitution allows for more precise control at higher speeds by using electronic feedback rather than purely mechanical timing and spacing mechanisms
2Measurement precision
If manual verification of seed placement is performed to ensure accuracy, then measurement precision improves, but loss of time increases due to delays in detection and correction
Solution Approach 1:
The sensor system continuously monitors seed placement during the planting operation, eliminating the need for intermittent manual verification. This continuous detection ensures placement accuracy is maintained throughout the entire planting process without stopping or slowing down the planter
Solution Approach 2:
The system performs self-verification through automated sensors that detect seed placement in real-time. The control system automatically processes this information and makes corrections without requiring manual intervention, thereby maintaining measurement precision while eliminating time loss associated with human verification
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
Enables real-time adjustment of planting speed and spacing, improving seed placement accuracy and reducing manual verification delays, thereby maximizing acreage planted and maintaining optimal crop yield.
Implementation Method 1
The press wheel has pressure-detecting instrumentation mounted therein to detect changes in air pressure inside the wheel due to deformation of the press wheel when the press wheel rolls over a planted set
Implementation Method 2
The press wheel has a flexible and stretchable surface capable of deforming when rolling over a planted set
Implementation Method 3
It falls into the furrow and rolls until it loses all of its forward momentum. This is called 'set roll' or 'seed roll'.
Implementation Method 4
The sets carry a forward momentum as they are being released from the planter. When the sets hit the ground, they roll in the furrow until the forward momentum is lost.
Data Source
Figure 1
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Figure 4
AI summary
The press wheel has instrumentation associated therewith detecting a rolling of the wheel over a planted set. The press wheel also has a computing device connected to the instrumentation and to the speed monitoring device of the planter. The computing device determines spacings between planted sets. The data obtained is real-time data and is readily available to the operator of the planter so that the speed of the planter can be adjusted on the fly to maintain an ideal set spacing.