Seed Transport Tracking for Precise Spacing in Air Seeding
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Solution Overview
Problem
Agricultural seeding machines face challenges in maintaining precise seed spacing and placement due to variations in air pressure, seed size and shape, and the presence of foreign materials, leading to irregularities in seed metering and delivery, which can affect yield and efficiency.
Innovation Solution
An agricultural machine with a seeding system that incorporates a seed meter sensor and an assistive seed transport mechanism, coupled with a control system to track seed movement and control seed release to a target location using sensor signals and a closed-loop control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air pressure is used to bias seeds into metering apertures, then seed metering is enabled, but variations in air pressure cause irregularities in seed delivery
Solution Approach 1:
The patent employs sensors to detect seed presence and position in real-time, providing feedback to the control system. This feedback loop allows the system to monitor and adjust air pressure dynamically, compensating for variations and maintaining consistent seed delivery despite environmental changes or pressure fluctuations.
Solution Approach 2:
The control system dynamically adjusts air pressure parameters based on sensor feedback and seed characteristics. By changing pressure parameters in real-time rather than using fixed pressure, the system adapts to variations in seed size, shape, and external conditions, ensuring reliable metering.
2Adaptability or versatility
If separate actuators drive metering and delivery systems, then independent control is achieved, but complex coordination is required for precise seed placement
Solution Approach 1:
The patent integrates the control of multiple actuators under a single centralized control system that processes sensor data and coordinates all components. By merging control functions and using a unified coordination algorithm, the system manages the complexity of multiple actuators while maintaining independent control capability for precise seed placement.
Solution Approach 2:
The control system performs multiple functions: it monitors seed position, controls metering actuator, controls delivery actuator, and adjusts air pressure. This multi-functional approach reduces overall system complexity by using one intelligent controller rather than separate control circuits for each actuator.
3Adaptability or versatility
If seed size and shape variations occur, then natural seed diversity is maintained, but metering precision deteriorates
Solution Approach 1:
The system dynamically adjusts metering parameters based on detected seed characteristics. When sensors detect variations in seed size or shape, the control system modifies aperture selection, air pressure, and timing parameters in real-time, allowing the system to adapt to different seed types while maintaining precise spacing through continuous parameter optimization.
4Reliability
If foreign materials are present in seed flow, then contamination occurs, but detection and rejection add system complexity
Solution Approach 1:
The patent introduces sensors as intermediary detection devices between the seed flow and the metering mechanism. These sensors detect foreign materials without directly interfering with seed flow, and the control system uses this information to reject contaminated seeds. The intermediary approach allows detection and rejection functionality to be added with minimal disruption to the existing seed handling system.
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 seed placement and spacing, enhancing yield potential by minimizing deviations in seed distribution and improving field utilization.
Implementation Method 1
a seed meter sensor configured to generate a sensor signal indicative of movement of the seed meter
Implementation Method 2
an assistive seed transport mechanism configured to receive the metered seed from the seed meter and to transport the metered seed along a delivery path
Implementation Method 3
A control system is configured to determine a position of the seed in the assistive seed transport mechanism based on the sensor signal, and generate a control signal to control the agricultural machine based on the determined position of the seed
Data Source
AI summary
An agricultural machine includes a seeding system having a seed meter configured to meter seed, a seed meter sensor configured to generate a sensor signal indicative of movement of the seed meter, and an assistive seed transport mechanism configured to receive the metered seed from the seed meter and to transport the metered seed along a delivery path. A control system is configured to determine a position of the seed in the assistive seed transport mechanism based on the sensor signal, and generate a control signal to control the agricultural machine based on the determined position of the seed.