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Near-infrared diffuse reflection spectrometer for milk composition detection

A component detection and near-infrared technology, which is applied in the field of near-infrared diffuse reflectance spectrometers, can solve problems such as retention, and achieve the effects of low cost, high degree of solidification, and convenient use

Inactive Publication Date: 2017-11-24
CHINA AGRI UNIV
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Problems solved by technology

In recent years, many near-infrared spectrometers have been developed at home and abroad, but there are still few spectrometers dedicated to dairy products. In the field of milk component analysis, most research results are still in the laboratory research stage

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  • Near-infrared diffuse reflection spectrometer for milk composition detection

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Embodiment Construction

[0027] The present invention utilizes near-infrared spectrum to irradiate the milk sample. During the irradiation process, the double-frequency or combined-frequency vibration of the hydrogen-containing groups in the sample will absorb a part of the light energy. Due to the different molecular groups, the absorbed light wavelengths are also different, thus Obtain the absorption spectrum of the sample in the near-infrared region. The absorption spectrum is converted into electrical signals by the detector, and the electrical signals are converted into digital signals by the data collector and transmitted to the embedded system, where data acquisition, data preprocessing, feature extraction, serial communication and pattern recognition are performed. And the recognition result is fed back to the user through the touch screen display. attached figure 1 The structure of the near-infrared spectrometer system of the present invention is shown, and the present invention will be desc...

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Abstract

The invention discloses a near-infrared diffuse reflection spectrometer for milk composition detection. The spectrometer comprises an optical source system, an optical splitting system, an integrating sphere sample cell, a detector, a data acquisition device, an embedded system and a power supply device. Optical information of a sample is obtained by the optical source system, the sample cell and the detector; the data acquisition device converts a detected analog electrical signal and then inputs a digital signal into the embedded system; data acquisition, data preprocessing, feature extraction, serial port communication and pattern recognition are performed in the embedded system; the milk composition detection is completed; a recognition result is fed back to a user; and data can be transmitted to a PC (Personal Computer) in a wired or wireless manner for more complicated processing. The near-infrared diffuse reflection spectrometer realizes real-time and rapid detection of milk quality, has an important significance to improve milk quality management, and has a wide application prospect and higher market competitiveness.

Description

technical field [0001] The invention relates to a near-infrared diffuse reflectance spectrometer, in particular to a near-infrared reflective spectrometer for detecting milk components Background technique [0002] Milk is one of the most commonly consumed foods in people's lives. It contains protein, fat, lactose and various vitamins and other nutrients needed by the human body. The protein content is about 3.25g / 100ml, and the fat content is about 3.9g / 100ml, lactose is about 4.6g / 100ml. The rapid, real-time and accurate detection of milk components is of great significance to improve the automation of milk production and ensure the quality of milk products. At present, there are many measurement methods for the analysis of milk components, such as chemical analysis, ultrasonic analysis, and near-infrared spectroscopy. Wait. The chemical analysis method has mature technology and high precision, and still plays an important role in all measurement methods. However, the c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359
CPCG01N21/359G01N2201/061
Inventor 杨璐许姗姗郑丽敏
Owner CHINA AGRI UNIV
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