Apparatus and method for rapidly and nondestructively detecting content of green tea composition

A non-destructive testing, green tea technology, applied in measuring devices, color/spectral property measurement, analyzing materials, etc., can solve the problems of high cost and cumbersome pretreatment process, and achieve the effect of low testing cost and good repeatability

Inactive Publication Date: 2009-05-06
CHINA JILIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the physical and chemical testing of conventional tea ingredients has high accuracy and reliability, but the pretreatment process of tea samples is cumbersome, time-consuming, costly, and destructive to samples. In addition, professional testing personnel must be equipped, so tea ingredients Physical and chemical testing methods cannot well meet the actual production and trade needs

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  • Apparatus and method for rapidly and nondestructively detecting content of green tea composition
  • Apparatus and method for rapidly and nondestructively detecting content of green tea composition
  • Apparatus and method for rapidly and nondestructively detecting content of green tea composition

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Embodiment

[0038] Figure 3-5 A specific embodiment of the photoelectric signal detection system of the present invention is shown. The rotating sample cell is placed in the circular fastening bayonet on the rotating platform 25, and the rotating platform is assembled with the cylindrical packaging body 40 through high-precision bearings. The active synchronous pulley 26 drives the rotary platform through the synchronous belt, so that it can rotate smoothly. The rotating speed of driving pulley is controlled by stepper motor 27, stepper motor driver 28 and single-chip pulse generator. While the rotating sample cell is rotating, the polychromatic light emitted by the bromine tungsten lamp 34 installed on the precise sliding base 36 of the light source is collimated through the transmission collimating objective lens 32, and then is collimated by a hysteresis synchronous motor with a rotating speed of 3000 R / M. 30 drives the modulation disc 42 to modulate the light intensity of the colli...

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Abstract

The invention discloses a device for the rapid NDE (nondestructive examination) of component contents of green tea, which mainly comprises a photoelectric signal examination system and an embedded DSP (Digital Signal Processing) system, wherein the photoelectric signal examination system and the embedded DSP system are both capsulated in an outer casing. The invention can realize the NDE of routine examination items in the green tea, such as amino acid, caffeine, tea polyphenol, moisture, and the like, is rapider and more environment-friendly than the routine physical and chemical inspection of green tea components without carrying out sample pretreatment, and has good examination result repetitiveness and low examination cost.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a device and method for non-destructive and rapid detection of conventional component content of green tea. Background technique [0002] Near-infrared light refers to electromagnetic waves with a wavelength between the visible region and the mid-infrared region. The wavelength range is 780nm to 2500nm. area. The information of near-infrared spectroscopy (NIR) mainly comes from the photon absorption caused by the internal vibration of the molecule, which mainly reflects the double frequency and combined frequency vibration absorption of hydrogen-containing groups such as C-H, N-H and O-H in the molecule. Near-infrared spectral analysis technology is to use the information contained in the near-infrared spectral region to conduct qualitative and quantitative analysis of substances. It is an organic combination of spectral analysis technology and chemom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G06F19/00G01N21/3563G01N21/359
Inventor 吕进卢启鹏施秧朴仁官刘辉军林敏陈星旦
Owner CHINA JILIANG UNIV
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