Seed Distribution System with Segmented Volumetric and Singulating Meters
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Solution Overview
Problem
Current seeding systems either require precise seed placement, which is not practical for high-rate applications, or they lack the precision needed for maximum yield, as they either singulate seeds individually or meter them volumetrically without efficient control over seed flow.
Innovation Solution
A seed metering and distribution system that includes a volumetric meter and singulating meters, with control valves and sensors to adjust seed flow, allowing for precise seed placement and rate control, using a cartridge with casings and roller segments to selectively shut-off seed flow and a pneumatic distribution system for efficient seed delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If volumetric metering is used for high-rate seeding applications, then productivity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The system divides the seeding process into two stages: a volumetric meter (first meter) that handles high-rate seed delivery to maintain productivity, and multiple singulating meters (second meters) that individually meter seeds for precise placement. The segmentation allows each component to optimize for its specific function while working together in the same system.
2Manufacturing precision
If singulating meters are used for precise seed placement, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The metering system is segmented into a first meter for volumetric delivery and multiple second meters for singulation, allowing the complex singulation function to be distributed across multiple simpler units rather than requiring one complex centralized metering system.
Solution Approach 2:
The first meter acts as an intermediary that pre-meters seeds before they reach the singulating meters, reducing the burden on the singulating meters and allowing them to focus solely on precise individual seed delivery, thereby simplifying their design.
3Manufacturing precision
If control valves are added to regulate seed flow, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The control valve system is segmented with individual valves associated with each casing and roller segment, allowing independent control of seed flow to each singulating meter. This segmentation enables precise flow regulation while keeping each control unit simple and modular.
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A system (21) for distributing a plurality of seeds is disclosed. The system (21) comprising: a storage tank (18) operable to store the plurality of seeds; a first meter (14) downstream of the storage tank (18); a second meter (22) downstream of the first meter (14) operable to individually meter the plurality of seeds; and an outlet conduit (46) located downstream of the second meter (22); wherein the first meter (14) is configured to adjust the flow of the plurality of seeds in response to a signal from a sensor located between the first meter (14) and the outlet conduit (46).