Acoustophoretic system for seed separation on conveyor belts.

Area of Science:

• Agricultural Engineering
• Acoustics
• Robotics

Background:

• Seed sorting is crucial for agriculture, but conventional air-jet systems lack accuracy and flexibility.
• Existing methods struggle with precise identification and ejection of substandard seeds.

Purpose of the Study:

• To develop and validate an ultrasonic phased array system for precise seed sorting on conveyor belts.
• To demonstrate advanced functionalities beyond simple ejection, such as levitation and variable categorization.

Main Methods:

• Integration of ultrasonic phased arrays with camera detection for seed identification based on size and color.
• Utilizing acoustic radiation forces for selective seed manipulation and ejection.
• Experimental validation in static and dynamic conditions.

Main Results:

• Effective separation of substandard seeds and unwanted debris using acoustophoretic control.
• Demonstrated variable ejection distances for nuanced seed categorization.
• Showcased functionalities like mid-air hovering and levitation for inspection and coating.

Conclusions:

• The developed acoustophoretic system offers a low-cost, adaptable, and highly functional alternative to conventional seed sorting.
• This technology represents a promising advancement for next-generation agricultural automation and precision sorting.