Terahertz dielectric spectrum-based donkey-hide gelatin water content detection method and system

A detection method and terahertz technology, which can be used in measurement devices, material capacitance, material analysis by electromagnetic means, etc., can solve the problem of time-consuming and other problems, and achieve the effect of improving product quality, convenient and fast operation, and small fluctuation range.

Pending Publication Date: 2021-03-26
SHANDONG ACAD OF SCI INST OF AUTOMATION
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  • Claims
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This method takes at least 6 hours and takes a long time

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  • Terahertz dielectric spectrum-based donkey-hide gelatin water content detection method and system
  • Terahertz dielectric spectrum-based donkey-hide gelatin water content detection method and system
  • Terahertz dielectric spectrum-based donkey-hide gelatin water content detection method and system

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Embodiment 1

[0045]Dielectric response is a phenomenon in which a substance interacts with electromagnetic waves of a certain frequency. When it is frequency dependent, it can also be expressed as a dielectric spectrum. Its main parameters are complex permittivity, complex conductivity, and absorption coefficient. Water has a strong absorption effect on terahertz waves, and the difference in water content has obvious changes in the terahertz dielectric response of donkey-hide gelatin, that is, the dielectric spectrum and absorption can reflect the change in water content of donkey-hide gelatin. Different from the disadvantage of narrow bandwidth and low resolution of microwave, terahertz has high bandwidth and high resolution, and the accuracy of detecting the water content of donkey-hide gelatin can be greatly improved.

[0046] Water exists in free form in donkey-hide gelatin. According to the effective medium model of the mixture, pure donkey-hide gelatin dry matter and water can be used...

Embodiment 2

[0059] Such as figure 2 As shown, Embodiment 2 of the present invention provides a water content detection system for donkey-hide gelatin based on terahertz dielectric spectroscopy, including: an acquisition module for the dielectric constant of standard dried donkey-hide gelatin of the same batch as the donkey-hide gelatin to be detected, the The dielectric constant of the donkey-hide gelatin and the dielectric constant of water; the first calculation module is used for combining the effective medium model, according to the dielectric constant of the standard dried donkey-hide gelatin, the dielectric constant of the donkey-hide gelatin to be detected and the dielectric constant of water to calculate the The volume coefficient of moisture; the second calculation module is used to calculate the water content of donkey-hide gelatin to be detected according to the volume coefficient of moisture.

[0060] Such as figure 1 As shown, the water content detection system of donkey-hi...

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Abstract

The invention provides a terahertz dielectric spectrum-based donkey-hide gelatin water content detection method and system, belongs to the technical field of water content detection. The method includes: obtaining the dielectric constant of standard dry donkey-hide gelatin, the dielectric constant of donkey-hide gelatin to be detected and the dielectric constant of water in the same batch as donkey-hide gelatin to be detected; calculating the volume coefficient of water in the donkey-hide gelatin to be detected according to the dielectric constant of the standard dried donkey-hide gelatin, thedielectric constant of the to-be-detected donkey-hide gelatin and the dielectric constant of water in combination with the effective medium model; and calculating the water content of the donkey-hidegelatin to be detected according to the volume coefficient of water. According to the method and system, only the dielectric constants of the donkey-hide gelatin to be detected, the standard dry donkey-hide gelatin and the water need to be tested, and the water content of the donkey-hide gelatinto be detected is calculated by utilizing the effective medium model and taking the dielectric constantof the dry donkey-hide gelatin as a reference, so that the test time is shortened, the detection cost is reduced and the production efficiency is improved; non-contact nondestructive measurement of atest sample is achieved, the operation is convenient and rapid, the measurement frequency is wide, the accuracy is high, the fluctuation range of a measurement value is small, and the product qualityis improved.

Description

technical field [0001] The invention relates to the technical field of water content detection, in particular to a method and system for detecting water content of donkey-hide gelatin based on terahertz dielectric spectrum. Background technique [0002] As an ingredient of traditional Chinese medicine, donkey-hide gelatin has the functions of invigorating the kidney, strengthening the bones, diuresis and reducing swelling. It has good application effects in the prevention and treatment of various diseases. It has been used in my country for more than 2,000 years. higher than 15%. Donkey-hide gelatin is made by boiling, from liquid to solid block. It needs to go through a long period of natural drying, microwave drying and other steps to make the water content of donkey-hide gelatin meet the requirements of the Pharmacopoeia. The drying method recommended by the Pharmacopoeia is generally used in the determination of the water content of donkey-hide gelatin. That is, several...

Claims

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Application Information

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IPC IPC(8): G01N27/22
CPCG01N27/221
Inventor 张献生常天英刘陵玉李羿璋崔洪亮
Owner SHANDONG ACAD OF SCI INST OF AUTOMATION
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