Seed Meter Pulse Control for Grouped Seed Placement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing agricultural machines face difficulties in planting multiple seeds in close proximity to each other, especially in scenarios where soil conditions such as heavy rainfall lead to soil crusting, which can hinder seed germination and emergence, as traditional seed meters with single rows of apertures struggle to achieve the desired seed spacing.
Innovation Solution
A motor control system that pulses the RPM speed of the seed meter and active seed delivery system to group seeds closely together and then space them based on a target seed population, using techniques like rotatable discs with clustered apertures and assistive seed delivery systems to ensure accurate placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional seed meters with single rows of apertures are used, then the device structure is simple, but the ability to plant multiple seeds in close proximity is insufficient
Solution Approach 1:
The seed metering component is divided into multiple apertures arranged in specific patterns (e.g., triangular patterns with 2-6 seeds per pattern) on the same rotating element, allowing simultaneous delivery of multiple seeds in close proximity while maintaining a relatively simple overall structure
Solution Approach 2:
Multiple apertures are arranged in two-dimensional patterns (such as triangular arrangements) on the rotating seed metering element, transitioning from a single-row linear arrangement to a multi-dimensional spatial configuration that enables closer seed placement
2Manufacturing precision
If motor speed is continuously adjusted to achieve desired seed population, then seed placement accuracy is improved, but energy consumption and system complexity increase
Solution Approach 1:
The motor operates in periodic pulse patterns rather than continuous adjustment, delivering seeds in grouped patterns at regular intervals that correspond to the desired seed population density, reducing energy consumption while maintaining placement accuracy
Solution Approach 2:
The system changes operational parameters by using fixed aperture patterns on the rotating element combined with controlled rotation speed, rather than continuously adjusting multiple parameters, simplifying control while achieving target seed population
Data Source
AI summary
A row unit has a seed meter and a seed delivery system. A target seed population is obtained and a motor that drives at least one of the seed meter and the seed delivery system is intermittently pulsed to plant seeds in groupings based on machine speed and target seed population.