A Near Infrared Diffuse Reflectance Probe
A diffuse reflection and near-infrared technology, used in measuring devices, material analysis by optical means, instruments, etc., can solve problems such as difficulty in non-destructive testing, reduce economic losses, provide light source illumination, and improve work efficiency.
Active Publication Date: 2016-08-24
INST OF ANIMAL SCI OF CHINESE ACAD OF AGRI SCI
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Problems solved by technology
Therefore, the sample must be crushed into minced meat to measure nutritional indicators such as protein, fat, and water content, and it is difficult to achieve on-site non-destructive testing
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[0020] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.
[0021] like figure 1 As shown, the near-infrared diffuse reflectance probe provided by the present invention includes a main frame 3 , an optical fiber 16 and a cup light source 13 . The main frame 3 is made of all-aluminum material, and the surface is treated with sandblasting and oxidation. The front end of the main frame 3 is sequentially connected with a front sleeve 2 and a front cover 1, and a protective window 7 is fixed on the front cover 1, and the protective window 7 is fixed on the front cover 1 through a protective window pressure ring 8 , the set protection window 7 can prevent the measured object from entering the inside of the probe to contaminate the light source and optical fiber. In the cavity of the main frame 3, a fiber holder 4 is connected, and the fiber holder is connected w...
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Abstract
The invention discloses a near-infrared diffuse reflection probe which comprises a main frame, fibers and a light source. The front end of the main frame is successively connected with a front sleeve and a front cover. A protective window plate is secured to the front cover. A fiber rack is connected in a cavity of the main frame. The fiber rack is provided with several fibers which are silica fiber with low hydroxyl content. The light source is arranged inside the cavity of the main frame and is secured to the fiber rack. Light emitted from the light source can be irradiated to the protective window plate. The light source is a cup-shaped light source. The inside of the light source is gold-plated. By the design of six-point 60-degree fiber distribution, signal acquisition range is raised greatly, and effective acquisition area of fiber is diameter 5.5cm. By the near-infrared diffuse reflection probe provided by the invention, field online lossless measurement of meat and carcass based on nutrient indexes can be realized, work efficiency is raised greatly, and economic losses are minimized.
Description
technical field [0001] The invention relates to a near-infrared diffuse reflection probe. Background technique [0002] Near-infrared light refers to electromagnetic waves between visible light and mid-infrared light. -SH) and other multiplier and combined frequency absorption. Since most organic compounds in meat, such as protein, fat, organic acid, carbohydrate, etc., contain different hydrogen-containing groups, the content of these components can be determined by analyzing them with near-infrared spectroscopy. [0003] The near-infrared diffuse reflectance probe is the core component of the near-infrared spectroscopic detector. The near-infrared diffuse reflectance probes commonly used in meat testing now adopt the form of single-point optical fiber acquisition. Due to this restriction, the effective area irradiated by the light source of the existing probe The diameter is also small (about 3.8cm), the signal collection range is small, and the diameter of the effective...
Claims
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IPC IPC(8): G01N21/359G01N21/3563G01N21/01
Inventor 孙宝忠谢鹏李海鹏张军刘璇吴斌张丽郎玉苗王欢孙晓明牛蕾任秋斌徐玉玲景缘程婷婷
Owner INST OF ANIMAL SCI OF CHINESE ACAD OF AGRI SCI