US 9,810,632 B2
Fluorescent substance detection system
Hakan Urey, Istanbul (TR); Osman Vedat Akgun, Istanbul (TR); Emre Heves, Istanbul (TR); Fehmi Civitci, Hillsboro, OR (US); and Basarbatu Can, Istanbul (TR)
Assigned to Kuantag Nanoteknolojiler Gelistirme vs Uretim A.S., Istanbul (TR); and Koc Universitesi, Istanbul (TR)
Appl. No. 15/326,995
Filed by KUANTAG NANOTEKNOLOJILER GELISTIRME VE ÜRETIM A.S., İstambul (TR); and KOÇNIVERSITESI, Istanbul (TR)
PCT Filed Jul. 17, 2014, PCT No. PCT/TR2014/000301
§ 371(c)(1), (2) Date Jan. 17, 2017,
PCT Pub. No. WO2016/010494, PCT Pub. Date Jan. 21, 2016.
Prior Publication US 2017/0205346 A1, Jul. 20, 2017
Int. Cl. G01N 21/64 (2006.01); G01N 21/85 (2006.01)
CPC G01N 21/643 (2013.01) [G01N 21/645 (2013.01); G01N 21/8507 (2013.01); G01N 2021/6484 (2013.01); G01N 2201/0826 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A detection system adapted to detect tagging materials added in a tagged fluid in order to identify the tagged fluid, wherein the tagging materials are fluorescent substances having known discrete emission spectrums, existing as a mixture in the tagged fluid, wherein each of the fluorescent substances is used for coding information by employing different emission wavelengths and intensity levels to identify the tagged fluid which is highly absorbent and highly fluorescent, the detection system comprising:
at least one illumination unit which emits light to the tagged fluid in order to excite the fluorescent substances to generate discrete emission spectrums used for generating coding information, the light emitted from the at least one illumination unit also generating fluorescence emissions in the tagged fluid along with the discrete emission spectrums from the fluorescent substances;
detection units, at least at a number equal to the number of types of the fluorescent substances, for detecting emissions coming from the fluorescent substances;
bandpass filters paired with the detection units, wherein the bandpass filter of each detection unit matches a center emission wavelength of the discrete emission spectrum of one of the fluorescent substances;
at least one signal processing unit, connected to the detection units, to receive signals including the discrete emission spectrums of the fluorescent substances from the detection units and process the signals to decode the coding information in order to identify the tagged fluid; and
at least one background detector for detecting the fluorescent emissions of the tagged fluid, the at least one background detector being in connection with the at least one signal processing unit to apply dynamic background subtraction method to extract the fluorescent emissions only from the fluorescent substances and employ them to identify the tagged fluid.