3 results about "Near infrared spectra" patented technology

The invention discloses a white spirit sample testing system and method based on near infrared spectroscopy, and relates to the technical field of liquid sample testing, solves the problem of difficulty in batch testing due to low accuracy and high cost of existing liqueur sample grade testing, and adopts the technical scheme that the liqueur sample grade testing device comprises a light source unit, a prism unit, a sample disc unit, a light splitting unit, a detection unit and a control terminal; the signal output end of the control terminal is connected with the signal input ends of the prism unit, the sample disc unit and the light splitting unit; the signal output end of the detection unit is connected with the signal input end of the control terminal; the control terminal comprises adisplay unit, a database, a data processing unit and a control unit; spectrum data of a white spirit sample are obtained by utilizing a near infrared spectrum technology, and the liqueur grade is rapidly judged by pattern recognition software, so that not only are the judgment speed and accuracy of the liqueur grade improved, but also the test cost is reduced, and basic conditions are provided forbatch test of the liqueur samples.

The invention discloses a portable grain quality online detection device based on a near infrared spectrum. The device comprises a light-emitting module, a spectrum acquisition module and a control circuit module, the light-emitting module comprises a near-infrared LED light source and a holographic beam shaping diffusion film. The near-infrared LED light sources are installed in the periphery ofthe top of a lamp tube. A detection window is formed in the bottom of a lamp barrel; the holographic beam shaping diffusion film is arranged inside or below the detection window; the spectrum acquisition module comprises a photoelectric detector and a Fresnel lens; the Fresnel lens is installed right above the detection window, the photoelectric detector is installed above the Fresnel lens, the photoelectric detector is connected with the control circuit module, and the control circuit module sends collected data information to a receiving and displaying device in a wireless or wired communication mode. Real-time acquisition of grain quality information and geographic position information in the agricultural machinery operation process and drawing of a grain quality field distribution mapare realized.