Optical sorter
Optical grape sorters use vision and artificial intelligence technologies to sort the grapes.
The process begins by draining and distributing the grapes in a single layer on a vibrating table, followed by their stabilisation on a conveyor belt.
Controlled lighting allows precise analysis of the images captured by a camera, and unwanted elements are then ejected by a pneumatic system.
An interface allows the user to define the sorting criteria, optimising the quality and performance of the sorting.
The process begins by draining and distributing the grapes in a single layer on a vibrating table, followed by their stabilisation on a conveyor belt.
Controlled lighting allows precise analysis of the images captured by a camera, and unwanted elements are then ejected by a pneumatic system.
An interface allows the user to define the sorting criteria, optimising the quality and performance of the sorting.
General operation of optical sorters
Optical grape sorters are automated systems that use vision technology to analyse and sort grapes. Their operation is based on several key stages:Draining and monolayer distribution
Before sorting, the grapes are drained to remove any free juice. The grapes are then distributed in a homogeneous monolayer on a vibrating table. This monolayer distribution is crucial for effective optical analysis, as it allows each object to be sorted to be clearly distinguished.
Controlled lighting
Lighting plays an essential role in optical analysis. Continuous, focused lighting, generally provided by LEDs or electroluminescent sources, ensures clear viewing without shadows. This consistency and focus of light is necessary for accurate image capture.Image analysis
A colour line-scan camera captures images of the illuminated objects. These images are then processed by a computer that analyses the coloured pixels to identify healthy berries and eliminate undesirable elements. This process is adapted to meet the high speeds required for optical sorting.
Ejection system
Once the analysis has been carried out, the system controls the ejection of undesirable elements using pneumatic solenoid valves or ejection nozzles. These devices are distributed across the width of the conveyor and operate at high frequency to meet throughput and precision requirements.Optimisation and performance of optical sorting
To guarantee optimum performance, the harvest must be prepared as soon as it reaches the sorting line. Each stage, from draining to ejection, must be precisely controlled to ensure the quality of the sorting.The stability of the objects and the quality of the lighting are essential for accurate optical analysis. Artificial intelligence also plays a key role, analysing images in real time and adjusting sorting criteria according to user-defined specifications.
Optical grape sorters represent a major technological advance in viticulture, offering automated and precise solutions for improving the quality of grapes destined for winemaking. By combining vision technologies, artificial intelligence and advanced ejection systems, this equipment ensures efficient sorting, meeting the quality and performance requirements of modern winemakers.