How to measure alcohol content

Abstract

The invention relates to the technical field of alcohol content detection, and discloses an alcohol content detection method. First, a first sample is used to obtain a calibration electrical signal, then a plurality of second samples with different alcohol content are used, and near-infrared light is used to transmit the second samples. , obtain a plurality of second transmitted lights corresponding to the plurality of second samples, perform photoelectric conversion and analog-to-digital conversion on the plurality of second transmitted lights, and use the calibration electrical signal for calibration to obtain a plurality of second samples corresponding to the Characteristic peaks, according to the obtained multiple characteristic peaks, establish a mathematical model of alcohol content and characteristic peaks, and finally input the measured characteristic peaks of the third sample into the mathematical model to calculate the alcohol of the third sample to be detected. Spend. The method adopts photoelectric conversion method instead of near-infrared spectrometer analysis, which can reduce the detection cost, and does not require professional personnel to operate and distinguish.

Description

technical field [0001] The invention relates to the technical field of alcohol content detection, in particular to a method for measuring alcohol content. Background technique [0002] Alcohol content is an important indicator to identify the quality of various alcoholic beverages and the performance of alcoholic materials. At present, the technology for detecting the alcohol content of beer is mainly based on traditional detection methods, such as density bottle method, alcohol meter method and gas chromatography method. It is relatively long, and the operator's ability requirements are relatively high, and chemical reagents are required to destroy the structure of the sample to be tested, which is not conducive to environmental protection. [0003] Another detection method is to use near-infrared spectroscopy for detection. The working principle of near-infrared spectroscopy is to transmit a beam of near-infrared light to the sample to be tested, and different functional ...

AI Technical Summary

Problems solved by technology

At present, the technology for beer alcohol detection is mainly based on traditional detection methods, such as density bottle method, alcohol meter method and gas chromatography. It is relatively long, and requires relatively high ability of the operator, and requires the use of chemical reagents, which will destroy the structure of the sample to be tested, which is not conducive to environmental protection

[0003] Another detection method is to use near-infrared spectroscopy for detection. The working principle of near-infrared spectroscopy is to transmit a beam of near-infrared light through the sample to be tested. The spectrogram displayed on the spectrometer is different due to the different absorption. Different functional groups or chemical bonds will have different characteristic peaks, and the characteristic peaks will change with the content of functional groups or chemical bonds. According to the spectrogram, you can get the The alcohol content of the sample, but the spectrum measured by this detection method is a full spectrum. The spectrum contains not only the characteristic peaks of alcohol, but also the characteristic peaks of other material components, which requires professional personnel to identify, and the detection process also time consuming

Images