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Domestic near-infrared detection device for food quality

A quality detection, near-infrared technology, applied in the direction of measuring devices, color/spectral characteristic measurement, instruments, etc., can solve the problems of large volume, complex structure, unsuitable for home use, etc., achieve small volume, simple operation, and reduce the cost of optical path Effect

Inactive Publication Date: 2012-07-11
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of people's quality of life requirements and the current status of the food market, families have higher and higher requirements for food quality, but the current table-top detectors are complex in structure and large in size, and are not suitable for home use.

Method used

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  • Domestic near-infrared detection device for food quality
  • Domestic near-infrared detection device for food quality
  • Domestic near-infrared detection device for food quality

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Embodiment Construction

[0014] In the following, the near-infrared food quality detection device for household use of the present invention will be described in detail in combination with specific embodiments.

[0015] 1. The structure of the detection device and the specific detection process

[0016] see figure 1 , the household near-infrared food quality detection device of the present invention comprises a near-infrared light source 7, an optical filter 8, a Fresnel lens 9, a sample pool 1, a detector 2, a lock-in amplifier 3, a microprocessor 4, an interface module 5, Display 10, sound and light alarm 11 and power supply module 6. The near-infrared rays emitted by the near-infrared light source 7 pass through the filter 8, the Fresnel lens 9, and the sample pool 1 in turn (the food to be tested is placed in the sample pool, such as: meat, edible oil, dairy products, grains and rice noodles, etc.) , the detector 2 and the lock-in amplifier 3 are converted into square wave signals and sent to th...

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Abstract

The invention discloses a domestic near-infrared detection device for food quality, which comprises a near-infrared light emitting source, a light filter, a Fresnel lens, a sample tank, a detector, a lock-in amplifier and a microprocessor. Near infrared rays emitted from the near-infrared light emitting source are converted into square-wave signals after passing through the light filter, the Fresnel lens, the sample tank, the detector and the lock-in amplifier in sequence; the square-wave signals are inputted into the microprocessor; and the microprocessor processes the received square-wave signals by utilizing fuzzy iterative self-organization data analysis and displays the signals. The domestic near-infrared detection device is simple in structure, convenient to operate and suitable to use domestically.

Description

technical field [0001] The invention relates to a hand-held household food quality detection device based on near-infrared spectroscopy. Background technique [0002] The near-infrared food quality detection device is based on the optical absorption characteristics of various representative organic components in food (meat, edible oil, dairy products, grains and rice noodles, etc.) in the near-infrared spectrum region, and the strongest absorption wavelength of each component. Different, the proportional relationship between the absorption intensity and the organic content of the grain, through the regression analysis of the known chemical composition content of the sample and its near-infrared spectrum measurement results, the calibration equation is established, and the same type of unknown sample composition content can be estimated. Measurement. Due to weak absorption, near-infrared light has a stronger penetrating ability than mid-infrared and visible light. It can di...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/359
Inventor 吴明赞曹杰梁勇杨慧萍
Owner NANJING UNIV OF SCI & TECH
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