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, as well as a collection window, a detection light source, a beam splitting device and a detector which are arranged in the shell in sequence, wherein the shell is also internally provided with a converter and a power supply device, the output end of the detector is connected with the input end of the converter, the power supply device is connected with the detection light source, the detector and the converter respectively; the system also comprises a sample reservoir, the sample reservoir comprises a sapphire sampling contact surface and a fixed seat, a chamber is formed in the fixed seat and the two ends of the fixed seat are provided with openings, the opening at one end of the fixed seat is fixedly arranged on the collection window, the opening at the other end is fixedly provided with the sapphire sampling contact surface, and the beam splitting device is a linear gradual filter. By using the portable near infrared spectrum detection system provided by the invention, under the condition of not enlarging the equipment size and weight, the detection accuracy is greatly improved, and the problem that a model is difficult to transfer 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 non-destructive testing is to know the content of various elements of this sample, such as BRIX-soluble solids, etc., but the portable near-infrared detection equipment for soft matrix or solid sample detection in the prior art still has the following problems: 1. Matrix or solid samples have special characteristics. 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 accuracy of the same type of equipment at home and abroad is currently low, resulting in detection 3. The detection results of portable near-infrared detection equipment in the prior art are still unstable, resulting in unusable results; 4. Since the near-infrared detection equipment must be calibrated before use, the principle of calibration is based on the equipment The different properties and accuracy of the natural light intensity are collected, and the maximum absorption rate is collected by the calibration module to determine the integration time. However, due to the natural light factor of the existing portable near-infrared detection equipment, the uncertainty factors of the calibration are more reliable. , the test results cannot be obtained accurately

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