Facility for detecting at least one characteristic parameter of a medium, and method for detecting at least one such characteristic parameter

A facility for detecting at least one characteristic parameter of a medium, the detection facility comprising:

• at least one container to contain the medium;
• illumination means configured to illuminate the medium with visible polychromatic light;
• excitation means configured to excite the medium with a visible-light or infrared monochromatic radiation;
• first collection and conveying means configured to collect and convey at least a first electromagnetic radiation emitted by the medium, and second collection and conveying means configured to collect and convey at least a second electromagnetic radiation emitted by the medium;
• at least one visible-band spectrometer connected to the first collection and conveying means and configured to obtain at least one visible-band spectrum of the medium from the at least one first electromagnetic radiation;
• at least one Raman spectrometer connected to the second collection and conveying means and configured to obtain at least one Raman spectrum of the medium from the at least one second electromagnetic radiation;
• means for detecting the at least one characteristic parameter of the medium, from the at least one visible-band spectrum of the medium and from the at least one Raman spectrum of the medium, wherein the detection means comprise (i) a database containing a plurality of reference visible-band spectra and a plurality of reference Raman spectra, and (ii) processing means configured to process, simultaneously, the at least one visible-band spectrum of the medium and the at least one Raman spectrum of the medium as a function of the plurality of reference visible-band spectra and the plurality of reference Raman spectra of the database, in order to obtain the at least one characteristic parameter of the medium,
• wherein
• the illumination means comprise (i) at least one source of visible polychromatic light configured to emit at least one visible polychromatic light, and (ii) means for illuminating the medium along at least two different optical paths, and
• the excitation means comprise (i) at least one source of visible-light or infrared monochromatic radiation configured to emit at least one visible-light or infrared monochromatic radiation, and (ii) means for exciting the medium along at least two different optical paths;
• wherein
• the means for illuminating the medium along at least two different optical paths comprise means for illuminating the medium along at least two different illumination angles of incidence or with at least two different illumination foci, and
• the means for exciting the medium along the at least two different optical paths comprise means for exciting the medium along at least two different excitation angles of incidence or with at least two different excitation foci,
• wherein
• (i)
• the means for illuminating along at least two different illumination angles of incidence comprise at least one first reflection means configured to reflect the at least one visible polychromatic light in direction of the medium and first positioning means configured to position the at least one first reflection means in at least two different positions, and
• the means for exciting along at least two different excitation angles of incidence comprise at least one second reflection means configured to reflect the at least one visible-light or infrared monochromatic radiation in direction of the medium and second positioning means configured to position the at least one second reflection means in at least two different positions,
• and/or
• (ii)
• the means for illuminating along at least two different illumination angles of incidence comprise first positioning means configured to position the at least one source of visible polychromatic light in at least two different positions, and
• the means for exciting along at least two different excitation angles of incidence comprise second positioning means configured to position the at least one source of visible-light or infrared monochromatic radiation in at least two different positions.