Apparatus for Detecting a Substance in a Rod Shaped Article of the Tobacco Industry

摘要

An apparatus (1) for detecting a substance in a rod shaped article of the tobacco industry (2), the apparatus (1) including one or more sources (10,11) of electromagnetic radiation, one or more detectors (26, 27) and a processor (32). The one or more sources (10, 11) are configured to generate electromagnetic radiation at first and second wavelengths (λ1, λ2). The one or more detectors (26, 27) are configured to detect the first and second wavelengths (λ1, λ2) after propagation in the rod shaped article (2), lo and to generate signals (A, B) based on the amount of radiation received at each wavelength (λ1, λ2). The processor (32) is configured to process the signals (A, B) to determine information relating to the presence of the substance, based on the relative amount of radiation received at the first and second wavelengths.

主权项

1. Apparatus for detecting a substance in a rod shaped article of the tobacco industry, comprising:
one or more sources of electromagnetic radiation, configured to generate electromagnetic radiation at first and second wavelengths, said first and second wavelengths being different from each other, said one or more sources of electromagnetic radiation being configured to generate the first wavelength at a peak in the optical absorption spectrum of the substance; one or more detectors, configured to detect the first and second wavelengths after propagation in the rod shaped article, wherein the one or more detectors are configured to generate signals based on the amount of radiation received at each wavelength; and a processor configured to process the signals to determine information relating to the presence of the substance, based on the relative amount of radiation received at the first and second wavelengths.