Selector machine

A selector machine, comprising:

• a conveyance system (2), which defines an advancement path (A) along which it is susceptible of advancing at least one loose product comprising multiple solid elements to be selected, and is arranged for advancing said loose product via falling at least in an analysis section (A′) of said advancement path (A);
• an optical detection system (3) comprising:
• optical emitters (4) comprising at least one row (41) of LEDs placed aligned along an alignment direction (X) orthogonal to said advancement path (A) and arranged for emitting, towards the analysis section (A′) of said advancement path (A), electromagnetic radiation adapted to hit said loose product;
• an optical sensor (5) directed towards said advancement path (A) and arranged for intercepting electromagnetic radiation coming from said loose product irradiated by said optical emitters (4), and for transducing said electromagnetic radiation into corresponding measurement signals;
• an electronic control unit (6) operatively connected to said optical sensor (5) to receive said measurement signals, and arranged for emitting command signals;
• an expulsion system (7) operatively connected to said one electronic control unit (6) to receive said command signals, which are adapted to command said expulsion system (7) to eliminate, from said advancement path (A), given solid elements of said loose product;
• wherein said optical emitters (4) are arranged for emitting infrared radiation at least in a given continuous spectral infrared band;
• wherein said at least one row (41) of LEDs is organized in multiple groups (43) of LEDs, placed side-by-side along said alignment direction (X);
• wherein the LEDs of each said group (43) comprise multiple infrared LEDs arranged for emitting infrared radiation in corresponding different spectral infrared bands, wherein the sum of said spectral bands completely covers at least said continuous spectral infrared band;
• wherein said electronic control unit (6) is arranged for simultaneously actuating said infrared LEDs (44);
• wherein said optical sensor (5) comprises at least one hyperspectral camera (51), which has a spectral range that covers at least said continuous spectral infrared band.