Vacuum Leaf Imaging for Consistent Field Phenotyping

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Solution Overview

Problem

Existing high-throughput plant phenotyping systems face challenges in consistently processing leaves for imaging due to inconsistent leaf handling, leading to poor image quality and the need for repeated imaging procedures.

Innovation Solution

An autonomous imaging system with a vacuum-based leaf-handling mechanism that elevates leaves onto a grate using fans, allowing consistent imaging by a hyperspectral or multispectral camera, and includes a machine vision module for precise leaf detection and positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automatic leaf-handling mechanisms are used to process leaves for imaging, then imaging throughput is improved, but leaf handling consistency deteriorates

Engineering Contradiction:
Improveimaging throughputVSAvoidleaf handling consistency
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces complex mechanical leaf-handling mechanisms with a vacuum-based pneumatic system. The vacuum unit creates a pressure differential that gently grasps and transports leaves without mechanical contact, eliminating the inconsistency caused by mechanical grippers and contact-based handling while maintaining high throughput capability.

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

Solution Approach 2:

The patent employs a vacuum-based pneumatic system to handle leaves. The vacuum unit draws air through a porous plate, creating suction that uniformly holds and transports leaves of varying sizes and shapes. This pneumatic approach provides consistent, gentle handling compared to mechanical systems, directly resolving the reliability issue while preserving productivity.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Speed

If leaves are handled automatically in high-throughput systems, then processing speed is improved, but image quality consistency deteriorates

Engineering Contradiction:
Improveprocessing speedVSAvoidimage quality consistency
Core Design Contradiction:
SpeedVSManufacturing precision

Solution Approach 1:

The patent replaces mechanical handling systems with a vacuum-based system that uses pressure differentials to grasp and position leaves. This substitution eliminates the mechanical contact and positioning errors that cause variable image quality, while maintaining high processing speed through automated vacuum operation.

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

Solution Approach 2:

The patent controls the vacuum pressure level to optimize leaf handling. By adjusting the vacuum pressure parameter, the system achieves consistent leaf grasping and positioning, which directly translates to consistent image quality. The pressure control allows the system to maintain both speed and precision simultaneously.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If vacuum units are used to elevate leaves onto grates, then leaf positioning consistency is improved, but system complexity increases

Engineering Contradiction:
Improveleaf positioning consistencyVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The vacuum unit serves multiple functions: it grasps leaves for transport, positions leaves on the grate, and controls leaf orientation. This multi-functionality reduces the need for separate positioning mechanisms, thereby limiting the increase in system complexity while achieving consistent positioning.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The porous plate acts as an intermediary between the vacuum source and the leaves. It distributes the vacuum pressure uniformly across the leaf surface, enabling consistent positioning without requiring complex pressure control systems. The porous plate simplifies the overall system while maintaining positioning precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 consistent and efficient imaging of multiple plant leaves, improving precision agriculture by providing high-quality phenotyping data with reduced repetition and environmental impact.

Implementation Method 1

one or more vacuum units coupled to the mobility unit configured to be positioned above one or more leaves of the plant. The one or more vacuum units each having one or more fans coupled to an air inlet having a grate, and configured to elevate the one or more leaves of the plant onto the grate

Methodology Applied
Scientific EffectVacuum suction: Suction

Data Source

PatentUS20260059200A1Autonomous phenotype imaging system
Publication Date: 2026.02.26 PURDUE RES FOUND
  • US20260059200A1 patent drawing
  • US20260059200A1 patent drawing
  • US20260059200A1 patent drawing

AI summary

An autonomous system for providing consistent images of leaves of plants is disclosed which includes a mobility unit configured to move from an originating position to a position about a plant in a field, one or more vacuum units coupled to the mobility unit configured to be positioned above one or more leaves of the plant, the one or more vacuum units each having one or more fans coupled to an air inlet having a grate, and configured to elevate the one or more leaves of the plant onto the grate, and one or more imaging systems each having one or more cameras configured to obtain images from the one or more leaves of the plant.