Seed Sensor Feedback Control for Slugging and Orientation Detection

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Solution Overview

Problem

Current agricultural planting systems face challenges in detecting seed slugging, misorientation, and abnormal seeds, which can lead to clogging and inefficient planting operations.

Innovation Solution

A seed sensor is used to generate signals that detect planting characteristics such as seed orientation, slugging, and abnormalities, enabling a control system to adjust seed delivery systems accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional planting systems are used without seed sensors, then the device complexity is low, but seed slugging, misorientation, and abnormal seeds cannot be detected, leading to clogging and inefficient planting operations

Engineering Contradiction:
Improvedetection accuracyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces mechanical detection methods with optical sensing technology. Seed sensors using optical detectors, image sensors, or spectral sensors detect seed characteristics non-contactly, eliminating the need for complex mechanical inspection systems while achieving reliable detection of seed slugging, misorientation, and abnormalities

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces seed sensors as intermediary detection devices between the seed delivery system and the planting process. These sensors act as mediators that convert physical seed characteristics into electrical signals for analysis, enabling reliable detection without direct mechanical interaction with seeds

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If seed sensors and control systems are added to detect and address seed abnormalities, then planting efficiency improves and clogging is prevented, but device complexity increases

Engineering Contradiction:
Improveplanting efficiencyVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements feedback control where seed sensors continuously monitor seed characteristics and provide real-time signals to the control system. The controller adjusts seed delivery parameters based on detected abnormalities, creating a closed-loop system that improves planting efficiency through automatic correction of seed placement issues

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-diagnosis and self-correction by automatically detecting seed abnormalities and adjusting delivery parameters without external intervention. The control system monitors its own performance and makes real-time adjustments to maintain optimal planting conditions

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If real-time seed detection and control is implemented, then seed placement accuracy improves, but the complexity of the seed delivery system increases

Engineering Contradiction:
Improveseed placement accuracyVSAvoidseed delivery system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical positioning systems with optical detection and electronic control. Seed sensors detect seed orientation and position non-contactly, and the control system adjusts delivery parameters electronically, achieving high placement accuracy without complex mechanical adjustment mechanisms

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent achieves improved seed placement accuracy by dynamically changing delivery parameters such as seed metering rate, delivery timing, and placement position based on real-time sensor feedback. This allows precise control through parameter adjustment rather than complex mechanical reconfiguration

Inventive Principle:
Principle #35Parameter changes

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 effectively identifies and addresses seed slugging, misorientation, and abnormal seeds, improving planting efficiency and preventing clogging by adjusting seed delivery parameters.

Implementation Method 1

A seed sensor senses seeds on a row unit and generates a seed sensor signal

Methodology Applied
Scientific EffectOptical detection: Photoelectric Effect

Data Source

PatentUS12426532B2Planting characteristic detection and control using a seed sensor
Publication Date: 2025.09.30 DEERE & CO
  • US12426532B2 patent drawing
  • US12426532B2 patent drawing
  • US12426532B2 patent drawing

AI summary

A seed sensor senses seeds on a row unit and generates a seed sensor signal. A number of planting characteristics, such as a seed orientation, seed slugging, delivery system wear, and seed abnormalities, can be detected based on the seed sensor signal. The planter can be controlled based on the detected planting characteristics.