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Optical sorting (sometimes called digital sorting) is the automated process of sorting solid products using cameras and/or lasers.. Depending on the types of sensors used and the software-driven intelligence of the image processing system, optical sorters can recognize an object's color, size, shape, structural properties and chemical composition. [1]
Color sorters are mostly used in sorting grain and other agricultural products. The rice sorting industry is the first big market. The rice sorting technology is according to the color differences of rice (husked paddy) materials, using a high-resolution CCD optical sensor to separate stones, black rice, etc.
Sensor-based sorting is the automation and extension to hand picking. In addition to sensors that measure visible differences like color (and the further interpretation of the data regarding texture and shape), other sensors are available on industrial scale sorters that are able to measure differences invisible for the human eye (EM, XRT, NIR).
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Rice colour sorters have been around for a number of decades, and the technology has improved over the years with the advancement in integrated circuitry, camera optics and faster ejector valves allowing for machines that process grains faster and with higher capacities on smaller footprints.
The cross-belt sorter operates in several stages: Induction: Items are fed typically at an angle of 30˚ or 45˚ onto the moving sorter through a series of conveyors that accelerate the item to the sorter speed. The cross-belt then activates and the item is inducted to the sorter cell at null relative speed.
The Transorma was the first large-scale multi-position mail sorting machine, built by the Dutch heavy industrial company, Werkspoor.The name is an acronym for "TRANsport and SORting, Marchand and Andriessen", the last names of the inventors.
Wall Street kicked off the Santa Rally season on a positive note, with all major indices and sectors closing higher in a shortened session ahead of the Christmas holiday. The S&P 500 climbed 1% ...