Calculation unit, and associated hue determination device, fluid dispensing system and dispensing method

A calculator for a hue determination device for a fluid distribution system, the calculator comprising:

• at least one light source emitting polychromatic or monochromatic light towards the fluid in a measurement area;
• a light sensor receiving a light signal that has been reflected on the fluid or transmitted through the fluid, the light signal corresponding to an optical reflection or to an optical transmission by the fluid, respectively, of the polychromatic or monochromatic light emitted towards the fluid, the light signal representing a hue of the fluid circulating in the fluid distribution system, the light sensor being further configured to emit parameters, each parameter representing a light intensity of the light signal for a given color channel;
• an acquisition optical fiber conveying the light signal to the light sensor;
• and
• an estimator receiving the parameters emitted by the light sensor, and determining a variable representing a hue of the fluid via a pre-trained artificial intelligence model, each parameter representing a light intensity of the light signal for a given color channel being an input variable of the model, an output variable of the artificial intelligence model being the variable representing a hue of the fluid, wherein the variable representing the hue of the fluid is either a purity index of the fluid circulating in the fluid distribution system, or a class indicator among a plurality of classes, each class corresponding to a predefined fluid hue.