Gradual-filter-based super-portable near infrared spectroscopic analysis system

Abstract

The invention relates to a gradual-filter-based super-portable near infrared spectroscopic analysis system. The system includes a light source, an optical system, a sample assembly, a beam-splitting and detector module and an electronic system. The light source emits a near infrared beam, and the optical system collects the near infrared beam, projects the near infrared beam to the sample assembly, and radiates the beam-splitting and detector module with the near infrared beam. The beam-splitting and detector module includes a gradual filter and a detector array, is used for converting split incident light to an electrical signal and sends the electrical signal to the electronic system. The electronic system is used for obtaining, sampling, buffer memory, and transmission of the electrical signal, communicates with a host computer, and drives and controls the beam-splitting and detector module. Without any mobile component, beam splitting is achieved through the gradual filter, the packaging size of a spectrum analyzer is effectively reduced, and the problem of spectrum crosstalk in a conventional filter-type spectrometer is overcome.

Description

technical field [0001] The invention belongs to the field of near-infrared spectrum analysis, in particular to an ultra-portable near-infrared spectrum analysis system based on a gradient filter. Background technique [0002] With the development of science and technology, spectral analysis technology is more and more applied to many fields, from basic scientific research to industrial and agricultural production, such as food, seasoning, wine, meat, oil, feed protein, etc. Food industry, gasoline, diesel, kerosene and other petrochemical industries, polymer materials and other processing process monitoring and analysis, pharmaceutical industry, paper printing and dyeing industry, forestry, environmental protection, soil analysis, criminal identification of drugs, identification of counterfeit banknotes, etc. In the above applications, cheap near-infrared portable spectral analysis instruments suitable for mass production are an important part, which will directly affect the...

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Problems solved by technology

[0003] For the above applications, miniaturized, portable, and low-cost near-infrared spectral analysis instruments are the development trend. At present, miniaturized near-infrared spectral analysis instruments mainly rely on Czerny-Turner orthogonal grating technology and MEMS (micro-electromechanical system) technology. However, using the above technology, there are problems such as limited volume reduction, high cost, or the need for moving parts such as light sources and gratings.

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