Portable near-infrared spectrum detection system

Abstract

The invention relates to the technical field of infrared spectrum detection, in particular to a portable near-infrared spectrum detection system. The portable near-infrared spectrum detection system comprises a shell, a collection window, detection light sources, a light-splitting device and a detector, and the collection window, the detection light sources, the light-splitting device and the detector are sequentially installed in the shell; a converter and a power supply device are further installed in the shell, the output end of the detector is connected with the input end of the converter, and the power supply device is connected with the detection light sources, the detector and a controller; the portable near-infrared spectrum detection system further comprises a sample pool which is installed on the collection window, the sample pool comprises a sampling part and a fixing seat, a cavity is formed in the sampling part, an opening is formed in one end of the sampling part, and the other end of the sampling part is movably connected in the fixing seat; a piston is arranged at the opening, the sampling part is movably connected in the fixing seat, and the fixing seat is fixedly installed on the collection window. According to the portable near-infrared spectrum detection system, on the condition that the size and weight of equipment are not increased, the detection precision is greatly improved, and the problem that a model is difficult to move is solved.

Description

technical field [0001] The invention relates to the technical field of infrared spectrum detection, in particular to a portable near-infrared spectrum detection system. Background technique [0002] Near Infrared Spectroscopy Analysis Technology (Near Infrared, NIR) is an electromagnetic radiation wave between visible light (Vis) and mid-infrared (MIR). The first non-visible light region discovered by humans in the absorption spectrum. The near-infrared spectrum region is consistent with the combined frequency of the vibration of hydrogen-containing groups (OH, NH, CH) in organic molecules and the absorption region of all levels of frequency multiplication. By scanning the near-infrared spectrum of the sample, the hydrogen-containing groups of organic molecules in the sample can be obtained. The characteristic information of the cluster, and the use of near-infrared spectroscopy to analyze samples has the advantages of convenience, rapidity, efficiency, accuracy and low cos...

AI Technical Summary

Problems solved by technology

The purpose of quantitative nondestructive testing is to know the content of various elements in this sample, such as protein, fat, amino acid, etc., but the portable near-infrared detection equipment for powder sample detection in the prior art still has the following problems: 1. Powder sample Due to the small contact surface of the optical fiber probe during spectrum collection, representative sample information cannot be collected; 2. For qualitative analysis and detection, the current domestic and foreign equipment of the same type has low precision, resulting in detection results that are different from actual results The error is large; 3. The detection results of the portable near-infrared detection equipment in the prior art are still unstable, resulting in no usability of the results; 4. Since the near-infrared detection equipment must be calibrated before use, the principle of calibration is based on the different properties of the equipment and Accuracy, collect the natural light intensity, and use the calibration module to collect the maximum absorption rate to determine the integration time, but the existing portable near-infrared detection equipment due to natural light factors, resulting in more reliable calibration uncertainty factors, can not be accurately obtained Test results

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