Ultra-portable near-infrared spectroscopy analysis system based on gradient filters

Abstract

The invention relates to an ultra-portable near-infrared spectral analysis system based on a gradient filter, including a light source, an optical system, a sample component, a spectrum splitting and detector module, and an electronic system; the light source emits near-infrared beams, and the optical system collects The near-infrared light beam is projected on the sample component, and then radiated on the spectral spectroscopic and detector module; the spectral spectroscopic and detector module includes a gradient filter and a detector array, which are used to convert the incident light into electrical The signal is sent to the electronic system, and the electronic system is used for acquiring, sampling, buffering, transmitting, and communicating with the host computer, and at the same time driving and controlling the spectrum splitting and detector module. The invention does not have any moving parts, adopts a gradient filter to realize light splitting, effectively reduces the packaging size of the spectrum analyzer and greatly reduces the spectral crosstalk problem existing in the traditional filter-type spectrometer.

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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