CN109030405A - The method of Electromagnetic Wave Detection cordyceps sinensis quality based on Terahertz frequency range - Google Patents
The method of Electromagnetic Wave Detection cordyceps sinensis quality based on Terahertz frequency range Download PDFInfo
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- 241001248610 Ophiocordyceps sinensis Species 0.000 title claims abstract description 51
- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000001228 spectrum Methods 0.000 claims abstract description 134
- 239000013558 reference substance Substances 0.000 claims abstract description 95
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 79
- 238000010521 absorption reaction Methods 0.000 claims description 54
- 239000000843 powder Substances 0.000 claims description 18
- 230000009466 transformation Effects 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 abstract description 151
- 239000013074 reference sample Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 abstract description 3
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 3
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001328 terahertz time-domain spectroscopy Methods 0.000 description 4
- 230000006854 communication Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 244000283482 Alloteropsis cimicina Species 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000017898 Digitaria ciliaris Nutrition 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005102 attenuated total reflection Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012850 discrimination method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002398 materia medica Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
- G01N21/3586—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation by Terahertz time domain spectroscopy [THz-TDS]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
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- Spectroscopy & Molecular Physics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The method for the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range that the present invention relates to a kind of.This method comprises: absorption spectrum of the detection reference substance to the electromagnetic wave of Terahertz frequency range；The absorption spectrum of reference substance is dactylogram；Sample to be tested is detected to the absorption spectrum of the electromagnetic wave of Terahertz frequency range；The absorption spectrum of sample to be tested is sample spectra；Comparative sample spectrum and dactylogram, obtain comparison result, with according to comparison result judge sample to be tested whether be cordyceps sinensis genuine piece.The above method irradiates the reference substance and sample to be tested of cordyceps sinensis with the electromagnetic wave of Terahertz frequency range respectively, accordingly obtains the absorption spectrum of the reference substance of cordyceps sinensis to the absorption spectrum of the electromagnetic wave of Terahertz frequency range and sample to be tested to the electromagnetic wave of Terahertz frequency range.Then compare the absorption spectrum of reference substance and the absorption spectrum of sample to be tested.Just can be judged in this way according to comparison result sample to be tested whether be cordyceps sinensis genuine piece, detect the polyvinyl chloride of cordyceps sinensis, detection cycle is shorter.
Description
Technical field
The present invention relates to food and drug safety technical field, in particular to a kind of Electromagnetic Wave Detection based on Terahertz frequency range
The method of cordyceps sinensis quality.
Background technique
Due to the use of Environmental variations, chemical pesticide and fertilizer, the Chinese medicine quality of different sources is caused to move back
Change, while some fake and inferior medicinal materials are seized the opportunity and are mixed into tcm clinical application, these factors perplex and constrain Chinese medicine
The curative effect of bed and the quality of Chinese materia medica preparation.To the matter of the quality of Chinese medicinal material, especially rare traditional Chinese medicine, such as cordyceps sinensis
Amount is identified, is identified, being controlled and preferably very important link.The identification identification of China's traditional Chinese medicine has eye sight, nose
Hear, mouth is tasted, hand is touched, extreme misery examination the methods of.With the development of science and technology, the middle of last century occurs by modern physics and changes
The instrument analytical method for learning principle identifies Chinese medicine, such as thin-layered chromatography, high performance liquid chromatography, Microscopic Identification method.
But Chinese medicine composition is complicated, and sample needs extracted separation or production section preparation.Therefore, for cordyceps sinensis, traditional inspection
Survey method pre-processing is extremely complex, and detection cycle is longer.
Summary of the invention
Based on this, it is necessary to which detection cycle long problem when the traditional detection method of needle detects cordyceps sinensis provides one kind
The method of Electromagnetic Wave Detection cordyceps sinensis quality based on Terahertz frequency range.
A method of the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range, for pair according to cordyceps sinensis
The quality of the sample to be tested of cordyceps sinensis is surveyed according to product examine, the frequency range of the electromagnetic wave of the Terahertz frequency range is within a preset range；Institute
The method of stating includes:
The reference substance is detected to the absorption spectrum of the electromagnetic wave of the Terahertz frequency range；Wherein, the suction of the reference substance
Receipts spectrum is dactylogram；
The sample to be tested is detected to the absorption spectrum of the electromagnetic wave of the Terahertz frequency range；Wherein, the sample to be tested
Absorption spectrum be sample spectra；
Compare the sample spectra and the dactylogram, obtain comparison result, with according to comparison result judgement it is described to
Sample whether be cordyceps sinensis genuine piece.
The above method irradiates the reference substance and sample to be tested of cordyceps sinensis with the electromagnetic wave of Terahertz frequency range, accordingly respectively
Obtain the electricity of the reference substance of cordyceps sinensis to the absorption spectrum of the electromagnetic wave of Terahertz frequency range and sample to be tested to Terahertz frequency range
The absorption spectrum of magnetic wave.Then compare the absorption spectrum of reference substance and the absorption spectrum of sample to be tested.So just can according to than
Relatively result judge sample to be tested whether be cordyceps sinensis genuine piece, detect the polyvinyl chloride of cordyceps sinensis, detection cycle is shorter, inspection
It is convenient to survey.
The sample spectra and the dactylogram in one of the embodiments, obtain comparison result, with basis
The comparison result judges that the step of whether sample to be tested is the genuine piece of cordyceps sinensis includes:
The frequency of the characteristic absorption peak of the reference substance is obtained from the dactylogram；
The frequency of the characteristic absorption peak of the sample to be tested is obtained from the sample spectra；
The frequency for comparing the frequency of the characteristic absorption peak of the sample to be tested and the characteristic absorption peak of the reference substance, in institute
State the characteristic absorption peak of sample to be tested frequency it is consistent with the frequency of the characteristic absorption peak of the reference substance when, the sample spectra and
The dactylogram is consistent, and the sample to be tested is genuine piece.
The reference substance or the sample to be tested are detected on monitor station in one of the embodiments, the inspection
Scaffold tower is total reflection prism, and the total reflection prism includes first side, second side and third side, first side
Face and the second side are mutually perpendicular to；The reference substance or the sample to be tested are located at the third side of the total reflection prism
On face.
Absorption light of the detection reference substance to the electromagnetic wave of the Terahertz frequency range in one of the embodiments,
Include: before the step of spectrum
In the monitor station zero load, from the first side for being totally reflected prism to described in the third side-emitted
The electromagnetic wave of Terahertz frequency range；Wherein, the electromagnetic wave of the Terahertz frequency range is probing wave, and the probing wave is in the total reflection
Incidence angle on the third side of prism is greater than or equal to critical angle；
The reference back wave being emitted by the second side is detected, the spectrum with reference to back wave is obtained；
The detection reference substance includes: to the step of absorption spectrum of the electromagnetic wave of the Terahertz frequency range
Emit the probing wave to the reference substance from the first side of the total reflection prism；Wherein, the detection
Incidence angle of the wave on the third side of the total reflection prism is greater than or equal to critical angle；
The control back wave being emitted by the second side is detected, the spectrum of the control back wave is obtained；
The spectrum for comparing the spectrum with reference to back wave and the control back wave, obtains the reference substance to the electricity
The absorption spectrum of magnetic wave；
The detection sample to be tested includes: to the step of absorption spectrum of the electromagnetic wave of the Terahertz frequency range
Emit the probing wave to the sample to be tested from the first side of the total reflection prism；Wherein, the spy
It surveys incidence angle of the wave on the third side of the total reflection prism and is greater than or equal to critical angle；
The sample back wave being emitted by the second side is detected, the spectrum of the sample back wave is obtained；
The spectrum for comparing the spectrum with reference to back wave and the sample back wave obtains the sample to be tested to described
The absorption spectrum of electromagnetic wave.
The spectrum with reference to back wave is with reference to time domain tera-hertz spectra in one of the embodiments,；The control
The spectrum of back wave is control time domain tera-hertz spectra；The spectrum of the sample back wave is sample time domain tera-hertz spectra；
The spectrum and the spectrum for compareing back wave with reference to back wave, obtains the reference substance to institute
The step of stating the absorption spectrum of electromagnetic wave include:
Fourier transformation is carried out with reference to time domain tera-hertz spectra by described, is obtained with reference to frequency domain tera-hertz spectra；
The control time domain tera-hertz spectra is subjected to Fourier transformation, obtains control frequency domain tera-hertz spectra；
Frequency domain tera-hertz spectra and the control frequency domain tera-hertz spectra are referred to according to described, calculates the reference substance to institute
State the absorption spectrum of electromagnetic wave；
The spectrum of the spectrum of the reference wave and the sample back wave obtains the sample to be tested to described
The step of absorption spectrum of electromagnetic wave includes:
The sample time domain tera-hertz spectra is subjected to Fourier transformation, obtains sample frequency domain tera-hertz spectra；
Frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra are referred to according to described, calculates the sample to be tested
To the absorption spectrum of the electromagnetic wave.
It is described in one of the embodiments, to refer to frequency domain tera-hertz spectra and the control frequency domain Terahertz according to described
Spectrum, the step of calculating absorption spectrum of the reference substance to the electromagnetic wave include:
Frequency domain tera-hertz spectra and the control frequency domain tera-hertz spectra are referred to according to described, calculates the reference substance to institute
State the absorption coefficient of electromagnetic wave；Wherein, the absorption coefficient of the reference substance reflects the absorption spectrum of the reference substance；
It is described to refer to frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra according to described, it calculates described to test sample
Product include: to the step of absorption spectrum of the electromagnetic wave
Frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra are referred to according to described, calculates the sample to be tested
To the absorption coefficient of the electromagnetic wave；Wherein, the absorption coefficient of the sample to be tested reflects the absorption spectrum of the sample to be tested.
Absorption light of the detection reference substance to the electromagnetic wave of the Terahertz frequency range in one of the embodiments,
Include: before the step of spectrum
It is placed on the monitor station by the reference substance grind into fine powder, and by the powdered reference substance；And
Include: before the step of absorption spectrum that the sample to be tested is detected to the electromagnetic wave of the Terahertz frequency range
The sample to be tested is ground into a powder, and the powder of the sample to be tested is placed on the monitor station.
The powder of the powder of the reference substance and the sample to be tested can at least cross 200 mesh in one of the embodiments,
Sieve.
The spectral range of the electromagnetic wave of the Terahertz frequency range is within the scope of 0 to 1.5THz in one of the embodiments,.
At work, the environment where the monitor station is vacuum environment to the monitor station in one of the embodiments,
Or inert gas environment.
Detailed description of the invention
Fig. 1 is the process signal of the method for the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range of an embodiment
Figure；
The terahertz absorption spectra figure of the reference substance of the method detection of Fig. 2 application drawing 1；
Fig. 3 is the terahertz absorption spectra figure for the sample to be tested one that the method for application drawing 1 detects；
Fig. 4 is the terahertz absorption spectra figure for the sample to be tested two that the method for application drawing 1 detects；
The terahertz absorption spectra figure of the sample to be tested three of the method detection of Fig. 5 application drawing 1；
The terahertz absorption spectra figure of the sample to be tested four of the method detection of Fig. 6 application drawing 1；
Fig. 7 is the schematic diagram of the monitor station in an embodiment；
Fig. 8 a is that reference substance is detected in an embodiment to the process of the method for the absorption spectrum of the electromagnetic wave of Terahertz frequency range
Schematic diagram；
Fig. 8 b is that sample to be tested is detected in an embodiment to the stream of the method for the absorption spectrum of the electromagnetic wave of Terahertz frequency range
Journey schematic diagram.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
A method of the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range, for pair according to cordyceps sinensis
The quality of the sample to be tested of cordyceps sinensis is surveyed according to product examine.The frequency range of the electromagnetic wave of Terahertz frequency range is within a preset range.Terahertz
Effective range of the frequency range of the electromagnetic wave of frequency range in detection cordyceps sinensis.In present embodiment, the electromagnetic wave wave of Terahertz frequency range
It is commonly referred to as the electromagnetic wave of 0.1THz to 10THz frequency range, between far infrared and microwave.In present embodiment, the winter is provided
Several samples to be tested of worm summer grass, including sample to be tested one, sample to be tested two, sample to be tested three and sample to be tested four.Wherein, right
It is a certain place of production of cordyceps sinensis, the genuine piece in a certain period according to product.Sample to be tested one, sample to be tested two, sample to be tested three and to be measured
The place of production and date indicated on the product identification of sample four are identical as reference substance, to ensure the accurate of testing result.Using this
The technical solution of embodiment detects the true and false of sample to be tested one, sample to be tested two, sample to be tested three and sample to be tested four.This reality
It applies in mode, can be detected by means of each sample of the terahertz time-domain spectroscopy instrument to cordyceps sinensis.
Fig. 1 is the process signal of the method for the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range of an embodiment
Figure.The terahertz absorption spectra figure of the reference substance of the method detection of Fig. 2 application drawing 1.Fig. 3 be application drawing 1 method detect to
The terahertz absorption spectra figure of sample one.Fig. 4 is the terahertz absorption spectra for the sample to be tested two that the method for application drawing 1 detects
Figure.The terahertz absorption spectra figure of the sample to be tested three of the method detection of Fig. 5 application drawing 1.The method detection of Fig. 6 application drawing 1
The terahertz absorption spectra figure of sample to be tested four.The method packet of the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range
It includes:
Step S120, absorption spectrum of the detection reference substance to the electromagnetic wave of Terahertz frequency range.
Specifically, the absorption spectrum of reference substance is dactylogram.In the present embodiment, terahertz time-domain spectroscopy instrument can be to control
Product emit the electromagnetic wave (electromagnetic wave be probing wave) of Terahertz frequency range, and detect reference substance transmission electromagnetic wave or reference substance it is anti-
The electromagnetic wave penetrated.By comparing the electromagnetic wave of transmission and the spectrum of probing wave, or compare electromagnetic wave and the spy of reference substance reflection
The spectrum for surveying wave, obtains reference substance to the absorption spectrum of the electromagnetic wave of Terahertz frequency range.
Step S140, absorption spectrum of the detection sample to be tested to the electromagnetic wave of Terahertz frequency range.
Specifically, the absorption spectrum of sample to be tested is sample spectra.It is consistent with the detection mode of dactylogram, terahertz time-domain light
Spectrometer can emit above-mentioned probing wave to sample to be tested, and detect the electromagnetic wave of sample to be tested transmission or the electromagnetic wave of reflection.It is logical
The spectrum of the electromagnetic wave and probing wave that compare sample to be tested transmission is crossed, or compares the electromagnetic wave and probing wave of sample to be tested reflection
Spectrum, obtain sample to be tested to the absorption spectrum of the electromagnetic wave of Terahertz frequency range.For sample to be tested one, sample to be tested two,
The absorption spectrum of sample to be tested three and sample to be tested four can measure respectively.
Step S160, comparative sample spectrum and dactylogram, obtain comparison result, to judge that sample to be tested is according to comparison result
The no genuine piece for cordyceps sinensis.
Specifically, it can be composed with comparative sample whether consistent with dactylogram.If consistent, prove that sample to be tested is cordyceps sinensis
Genuine piece.If inconsistent, sample to be tested is false cordyceps sinensis.It is possible to further obtain reference substance from dactylogram
The frequency of characteristic absorption peak.The frequency of the characteristic absorption peak of sample to be tested is obtained from sample spectra.Then compare sample to be tested
The frequency of the characteristic absorption peak of the frequency and reference substance of characteristic absorption peak.In the frequency and control of the characteristic absorption peak of sample to be tested
When the frequency of the characteristic absorption peak of product is consistent, sample spectra is consistent with dactylogram, and sample to be tested is genuine piece.Otherwise, sample to be tested is not
It is genuine piece.As shown in Fig. 2, cordyceps sinensis is deposited in 1.01THz, 1.12THz frequency location for the reference substance of cordyceps sinensis
In characteristic absorption peak.Accordingly, 1.01THz, 1.12THz are the frequency of the characteristic absorption peak of the reference substance.Such as Fig. 3 to Fig. 6
Shown, the frequency of the characteristic absorption peak of sample to be tested one is 1.01THz, 1.12THz.The frequency of the characteristic absorption peak of sample to be tested two
Rate is 1.01THz, 1.12THz.The frequency of the characteristic absorption peak of sample to be tested three is 1.01THz, 1.12THz.Sample to be tested four
Do not occurring the characteristic absorption peak of cordyceps sinensis in 0 to 1.5THz spectral range.Therefore, it is possible to determine that sample to be tested
One, sample to be tested two, sample to be tested third is that cordyceps sinensis certified products.And sample to be tested four is the fakement of cordyceps sinensis.
The above method utilizes the true and false of the Electromagnetic Wave Detection cordyceps sinensis of Terahertz frequency range.The above method, with Terahertz frequency
The electromagnetic wave of section irradiates the reference substance and sample to be tested of cordyceps sinensis respectively, accordingly obtains the reference substance of cordyceps sinensis to Terahertz
Absorption spectrum of the absorption spectrum and sample to be tested of the electromagnetic wave of frequency range to the electromagnetic wave of Terahertz frequency range.Then compare reference substance
Absorption spectrum and sample to be tested absorption spectrum.Just can judge whether sample to be tested is the worm summer in winter according to comparison result in this way
Grass genuine piece, detect the polyvinyl chloride of cordyceps sinensis, detection cycle is shorter, it is easy to detect and be non-destructive testing.In addition, using too
Before the process of the Electromagnetic Wave Detection cordyceps sinensis of hertz frequency range avoids extraction of antecedent chemical ingredient of traditional discrimination method etc.
Phase work, so as to avoid cordyceps sinensis chemical component it is rotten so that testing result is accurate.
It, first will with mortar before detection reference substance is to the absorption spectrum of the electromagnetic wave of Terahertz frequency range in one embodiment
Reference substance is ground into a powder, and the powder of reference substance is placed on monitor station.For example, the powder of reference substance can at least cross 200 mesh
Sieve, powder and the monitor station of reference substance come into full contact with.In detection sample to be tested to the absorption spectrum of the electromagnetic wave of Terahertz frequency range
Before, first sample to be tested is ground into a powder with mortar, and the powder of sample to be tested is placed on monitor station.The powder of sample to be tested
End can at least cross 200 meshes.The powder of sample to be tested comes into full contact with monitor station.In this way, reference substance can be made or to test sample
Product are thinner, and come into full contact with monitor station, so that testing result is more accurate.And reference substance or sample to be tested are placed on inspection
On scaffold tower, it is also possible that testing result is stablized.
Further, when detecting, reference substance and monitor station can be put into sample bin and is detected, by sample to be tested
It is respectively put into sample bin and is detected with monitor station.Environment in the sample bin is vacuum environment or inert gas environment.This
Sample, there is no the substances for the electromagnetic wave for absorbing Terahertz frequency range therefore can make testing result when detecting, in sample bin
It is more accurate.During actually detected, it can be filled with nitrogen in sample bin, air and steam is discharged.
Fig. 7 is the schematic diagram of the monitor station in an embodiment.Fig. 8 a is that reference substance is detected in an embodiment to Terahertz frequency
The flow diagram of the method for the absorption spectrum of the electromagnetic wave of section.Fig. 8 b is that sample to be tested is detected in an embodiment to Terahertz frequency
The flow diagram of the method for the absorption spectrum of the electromagnetic wave of section.As shown in fig. 7, reference substance 200 or sample to be tested are in monitor station
On detected (in Fig. 7 on monitor station by taking reference substance 200 as an example).Monitor station is total reflection prism 100.It is totally reflected prism
100 be silicon wafer.In this way, absorption of the monitor station to the electromagnetic wave of Terahertz frequency range can be avoided as far as possible, so that testing result is accurate.
Being totally reflected prism 100 includes first side 110, second side 120 and third side 130.Reference substance 200 or sample to be tested position
In on the third side 130 of total reflection prism 100.
In the present embodiment, the step of detection reference substance 200 is to the absorption spectrum of the electromagnetic wave of Terahertz frequency range, i.e. step
Include: before S120
In the monitor station zero load, from the first side 110 of the total reflection prism 100 to the third side
The electromagnetic wave of the 130 transmitting Terahertz frequency ranges.
The reference back wave being emitted by the second side 120 is detected, the spectrum with reference to back wave is obtained.
Specifically, the electromagnetic wave of the Terahertz frequency range is probing wave 300, and the probing wave 300 is in the total reflection three
Incidence angle on the third side 130 of prism 100 is greater than or equal to critical angle.Namely theoretically, probing wave 300 is in third side
It should be totally reflected on face 130.Communication process of the probing wave 300 in the inside of total reflection prism 100 is as follows: probing wave
300 are incident in monitor station from the first side 110 of monitor station, and electromagnetic wave is in the incidence angle of the first side 110 of monitor station
90 degree.Probing wave 300 is incident to first side 110, and the value of incidence angle θ, θ are 35 °.The value of θ is without being limited thereto, or its
Its numerical value, such as 45 °.Probing wave 300 reaches third side 130 and reflects, this is reflected into theoretic total reflection.But it is real
During the paths of border, monitor station can absorb part light energy.Therefore, the reflected light reflected by third side 130 is final
It is emitted by second side 120, the light-wave energy that second side 120 is emitted is smaller than detection wave energy.The light wave of second side outgoing
For with reference to back wave, the angle of emergence is 90 °.In the present embodiment, the spectrum with reference to back wave is with reference to time domain tera-hertz spectra, if ginseng
The spectral energy for examining back wave is Er (t).Above-mentioned monitor station is also decaying total reflection (Attenuated Total
Reflection, ATR) device.
As shown in Figure 8 a, the step of detecting absorption spectrum of the reference substance 200 to the electromagnetic wave of Terahertz frequency range, i.e. step
S120 includes:
Step S122, from the first side 110 of total reflection prism 100 to 200 emission detection wave of reference substance.
Specifically, incidence angle of the probing wave 300 on the third side 130 of total reflection prism 100, which is greater than or equal to, faces
Boundary angle.Namely theoretically, probing wave 300 should be totally reflected on third side 130.Probing wave 300 is in total reflection three
The communication process of the inside of prism 100 is as follows: probing wave 300 is incident in monitor station from the first side 110 of monitor station, electromagnetism
Wave is 90 degree in the incidence angle of the first side 110 of monitor station.Probing wave 300 is incident to third side 130, incidence angle θ, θ
Value be 35 °.The value of θ is without being limited thereto, or other numerical value, such as 45 °.Probing wave 300 reaches third side 130 and occurs
Reflection, this is reflected into theoretic total reflection.But during practical paths, light beam can penetrate after reaching third side
Into reference substance 200, reference substance is to light wave is absorbed in this process, and therefore, the intensity of the reflected light of third offside reflection is less than
With reference to back wave.The reflected light of third offside reflection is emitted by second side 120, and the light of second side outgoing is control reflection
Wave.
Step S124 detects the control back wave being emitted by second side 120, obtains the spectrum of control back wave.
Specifically, monitor station is projected from the second side 120 of monitor station by the electromagnetic wave that third side 130 is reflected, so as to
In the back wave of other components detection reference substance 200 of terahertz time-domain spectroscopy detection system, which is control back wave.
The spectrum for compareing back wave is control time domain tera-hertz spectra, and the energy of control time domain tera-hertz spectra is E1(t)。
Step S126, the spectrum of comparison reference back wave and the spectrum of control back wave, obtain reference substance 200 to electromagnetic wave
Absorption spectrum.
Specifically, Fourier transformation will be carried out with reference to time domain tera-hertz spectra, obtained with reference to frequency domain tera-hertz spectra.If too
The angular frequency of the electromagnetic wave of hertz frequency range is ω, then as follows to the formula of Er (t) progress Fourier transformation:
Er (ω)=∫ Er (t) exp (- i ω t) dt (1)
It is Er (ω) with reference to the energy of frequency domain tera-hertz spectra.
Control time domain tera-hertz spectra is subjected to Fourier transformation, obtains control frequency domain tera-hertz spectra.Similarly, to E1
(t) formula for carrying out Fourier transformation is as follows:
E1(ω)=∫ E1(t)exp(-iωt)dt (2)
The energy for compareing frequency domain tera-hertz spectra is E1(ω)。
According to reference frequency domain tera-hertz spectra and control frequency domain tera-hertz spectra, suction of the reference substance 200 to electromagnetic wave is calculated
Receive spectrum.Specifically, according to reference frequency domain tera-hertz spectra and control frequency domain tera-hertz spectra, reference substance 200 is calculated to electromagnetism
The absorption coefficient of wave.The absorption spectrum of the absorption coefficient reflection reference substance 200 of reference substance 200.It therefore, can by formula (1) and formula (2)
To obtain that there is specific functional relation between the absorption coefficient and angular frequency of reference substance 200.The calculation method of absorption coefficient
It is as follows:
Reference substance 200 can be acquired to the frequency of the characteristic absorption peak of probing wave 300 according to the expression formula of absorption coefficient.By
The absorption coefficient of formula (1) to (3) available reference substance 200 and the relational graph of angular frequency, the relational graph are referred to Fig. 2.
Correspondingly, reference substance 200 is 1.01THz, 1.12THz to the frequency of the characteristic absorption peak of probing wave 300.
As shown in Figure 8 b, the step of detecting absorption spectrum of the sample to be tested to the electromagnetic wave of Terahertz frequency range, i.e. step
S140 includes:
Step S142, from the first side 110 of total reflection prism 100 to sample to be tested emission detection wave 300.
Specifically, incidence angle of the probing wave 300 on the third side 130 of total reflection prism 100, which is greater than or equal to, faces
Boundary angle.This step is similar with above-mentioned steps S122.Probing wave 300 should be totally reflected on third side 130.Probing wave
300 communication process in the inside of total reflection prism 100 is as follows: probing wave 300 is incident to from the first side 110 of monitor station
In monitor station, electromagnetic wave is 90 degree in the incidence angle of the first side 110 of monitor station.Probing wave 300 reaches third side 130 simultaneously
It reflects, this is reflected into theoretic total reflection.But during practical paths, probing wave 300 is by third side
Also there is part detection wave 300 to be absorbed by sample to be tested when 130 reflection, i.e., the energy for the electromagnetic wave being emitted by second side 120 is small
In the energy of reference back wave.
Step S144 detects the sample back wave being emitted by second side 120, obtains the spectrum of sample back wave.
Specifically, monitor station is projected from the second side 120 of monitor station by the electromagnetic wave that third side 130 is reflected, so as to
In the back wave of other components detection sample to be tested of terahertz time-domain spectroscopy detection system, which is sample back wave.
The spectrum of sample back wave is sample time domain tera-hertz spectra, and the energy of sample time domain tera-hertz spectra is E2(t)。
Step S146, the spectrum of comparison reference back wave and the spectrum of sample back wave, obtain sample to be tested to electromagnetic wave
Absorption spectrum.
Specifically, sample time domain tera-hertz spectra is subjected to Fourier transformation, obtains sample frequency domain tera-hertz spectra.Together
Reason, to E2(t) formula for carrying out Fourier transformation is as follows:
E2(ω)=∫ E2(t)exp(-iωt)dt (4)
The energy for compareing frequency domain tera-hertz spectra is E2(ω)。
According to reference frequency domain tera-hertz spectra and sample frequency domain tera-hertz spectra, absorption of the sample to be tested to electromagnetic wave is calculated
Spectrum.Specifically, according to reference frequency domain tera-hertz spectra and sample frequency domain tera-hertz spectra, sample to be tested is calculated to electromagnetic wave
Absorption coefficient.The absorption spectrum of the absorption coefficient reflection sample to be tested of sample to be tested.Therefore, available by formula (1) and formula (2)
There is specific functional relation between the absorption coefficient and angular frequency of sample to be tested.The calculation method of absorption coefficient is as follows:
Sample to be tested can be acquired to the frequency of the characteristic absorption peak of probing wave 300 according to the expression formula of absorption coefficient.By
The absorption coefficient of formula (1), (4) and (5) available sample to be tested and the relational graph of angular frequency, the relational graph are referred to figure
3 into Fig. 6 any width.Further, compare the frequency of the characteristic absorption peak of sample to be tested and the characteristic absorption of reference substance 200
The frequency at peak is that can determine whether the true and false of cordyceps sinensis.
In the above method, to reference time domain tera-hertz spectra, control time domain tera-hertz spectra and sample time domain Terahertz
Before spectrum carries out Fourier transformation, Pretreated spectra can be carried out to each time-domain spectroscopy signal.Such as rectangle can be used and wear function pair
Each time-domain signal is handled, and can augment several zero points to above-mentioned each time-domain signal, to obtain higher frequency domain point
Resolution.In addition, Savitzky-Golay algorithm can be used when carrying out Pretreated spectra to each time-domain spectroscopy signal, made an uproar with filtering out
Sound, improve spectrum flatness while may insure that the shape of signal, width are constant.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of method of the Electromagnetic Wave Detection cordyceps sinensis true and false based on Terahertz frequency range, for the control according to cordyceps sinensis
The quality of the sample to be tested of cordyceps sinensis is surveyed in product examine, which is characterized in that the frequency range of the electromagnetic wave of the Terahertz frequency range is default
In range；The described method includes:
The reference substance is detected to the absorption spectrum of the electromagnetic wave of the Terahertz frequency range；Wherein, the absorption light of the reference substance
Spectrum is dactylogram；
The sample to be tested is detected to the absorption spectrum of the electromagnetic wave of the Terahertz frequency range；Wherein, the suction of the sample to be tested
Receipts spectrum is sample spectra；
Compare the sample spectra and the dactylogram, obtain comparison result, with described to test sample according to comparison result judgement
Product whether be cordyceps sinensis genuine piece.
2. the method according to claim 1, wherein the sample spectra and the dactylogram, obtain
Comparison result, to judge that the step of whether sample to be tested is the genuine piece of cordyceps sinensis includes: according to the comparison result
The frequency of the characteristic absorption peak of the reference substance is obtained from the dactylogram；
The frequency of the characteristic absorption peak of the sample to be tested is obtained from the sample spectra；
The frequency for comparing the frequency of the characteristic absorption peak of the sample to be tested and the characteristic absorption peak of the reference substance, it is described to
When the frequency of the characteristic absorption peak of sample is consistent with the frequency of the characteristic absorption peak of the reference substance, the sample to be tested is true
Product.
3. the method according to claim 1, wherein the reference substance or the sample to be tested are enterprising in monitor station
Row detection, the monitor station are total reflection prisms, and the total reflection prism includes first side, second side and third side
Face；The reference substance or the sample to be tested are located on the third side.
4. according to the method described in claim 3, it is characterized in that, the detection reference substance is to the Terahertz frequency range
Include: before the step of absorption spectrum of electromagnetic wave
In the monitor station zero load, from the first side of the total reflection prism to terahertz described in the third side-emitted
The hereby electromagnetic wave of frequency range；Wherein, the electromagnetic wave of the Terahertz frequency range is probing wave, and the probing wave is in the total reflection trigone
Incidence angle on the third side of mirror is greater than or equal to critical angle；
The reference back wave being emitted by the second side is detected, the spectrum with reference to back wave is obtained；
The detection reference substance includes: to the step of absorption spectrum of the electromagnetic wave of the Terahertz frequency range
Emit the probing wave to the reference substance from the first side of the total reflection prism；Wherein, the probing wave exists
Incidence angle on the third side of the total reflection prism is greater than or equal to critical angle；
The control back wave being emitted by the second side is detected, the spectrum of the control back wave is obtained；
The spectrum for comparing the spectrum with reference to back wave and the control back wave, obtains the reference substance to the electromagnetic wave
Absorption spectrum；
The detection sample to be tested includes: to the step of absorption spectrum of the electromagnetic wave of the Terahertz frequency range
Emit the probing wave to the sample to be tested from the first side of the total reflection prism；Wherein, the probing wave
Incidence angle on the third side of the total reflection prism is greater than or equal to critical angle；
The sample back wave being emitted by the second side is detected, the spectrum of the sample back wave is obtained；
The spectrum for comparing the spectrum with reference to back wave and the sample back wave obtains the sample to be tested to the electromagnetism
The absorption spectrum of wave.
5. according to the method described in claim 4, it is characterized in that, the spectrum with reference to back wave is with reference to time domain Terahertz
Spectrum；The spectrum of the control back wave is control time domain tera-hertz spectra；The spectrum of the sample back wave is sample time domain
Tera-hertz spectra；
The spectrum and the spectrum for compareing back wave with reference to back wave, obtains the reference substance to the electricity
The step of absorption spectrum of magnetic wave includes:
Fourier transformation is carried out with reference to time domain tera-hertz spectra by described, is obtained with reference to frequency domain tera-hertz spectra；
The control time domain tera-hertz spectra is subjected to Fourier transformation, obtains control frequency domain tera-hertz spectra；
Frequency domain tera-hertz spectra and the control frequency domain tera-hertz spectra are referred to according to described, calculates the reference substance to the electricity
The absorption spectrum of magnetic wave；
The spectrum of the spectrum of the reference wave and the sample back wave obtains the sample to be tested to the electromagnetism
The step of absorption spectrum of wave includes:
The sample time domain tera-hertz spectra is subjected to Fourier transformation, obtains sample frequency domain tera-hertz spectra；
According to it is described refer to frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra, calculate the sample to be tested to institute
State the absorption spectrum of electromagnetic wave.
6. according to the method described in claim 5, it is characterized in that, described according to described with reference to frequency domain tera-hertz spectra and described
Frequency domain tera-hertz spectra is compareed, the step of calculating absorption spectrum of the reference substance to the electromagnetic wave includes:
Frequency domain tera-hertz spectra and the control frequency domain tera-hertz spectra are referred to according to described, calculates the reference substance to the electricity
The absorption coefficient of magnetic wave；Wherein, the absorption coefficient of the reference substance reflects the absorption spectrum of the reference substance；
It is described to refer to frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra according to described, calculate the sample to be tested
Include: to the step of absorption spectrum of the electromagnetic wave
According to it is described refer to frequency domain tera-hertz spectra and the sample frequency domain tera-hertz spectra, calculate the sample to be tested to institute
State the absorption coefficient of electromagnetic wave；Wherein, the absorption coefficient of the sample to be tested reflects the absorption spectrum of the sample to be tested.
7. according to the method described in claim 3, it is characterized in that, the detection reference substance is to the Terahertz frequency range
Include: before the step of absorption spectrum of electromagnetic wave
It is placed on the monitor station by the reference substance grind into fine powder, and by the powdered reference substance；And
Include: before the step of absorption spectrum that the sample to be tested is detected to the electromagnetic wave of the Terahertz frequency range
The sample to be tested is ground into a powder, and the powder of the sample to be tested is placed on the monitor station.
8. the method according to the description of claim 7 is characterized in that the powder of the powder of the reference substance and the sample to be tested
200 meshes can at least be crossed.
9. the method according to claim 1, wherein the spectral range of the electromagnetic wave of the Terahertz frequency range is 0
To 1.5THz.
10. the method according to claim 1, wherein the monitor station is at work, where the monitor station
Environment is vacuum environment or inert gas environment.
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| PCT/CN2019/074049 WO2019223364A1 (en) | 2018-05-25 | 2019-01-31 | Method for detecting quality of cordyceps sinensis based on electromagnetic wave in terahertz band |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108647A (en) * | 2019-04-30 | 2019-08-09 | 深圳市太赫兹科技创新研究院有限公司 | A kind of discrimination method and identification system of meat kind |
| CN110108648A (en) * | 2019-04-30 | 2019-08-09 | 深圳市太赫兹科技创新研究院有限公司 | A kind of discrimination method and identification system of dried orange peel |
| WO2019223364A1 (en) * | 2018-05-25 | 2019-11-28 | 深圳市太赫兹科技创新研究院有限公司 | Method for detecting quality of cordyceps sinensis based on electromagnetic wave in terahertz band |
| CN114184575A (en) * | 2021-12-02 | 2022-03-15 | 福州大学 | Liquid refractive index sensing system and method based on metal grating terahertz super surface |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748086A (en) * | 2021-01-15 | 2021-05-04 | 上海理工大学 | Method for detecting authenticity and production place of American ginseng by adopting terahertz technology |
| CN113945536A (en) * | 2021-09-27 | 2022-01-18 | 桂林电子科技大学 | Method for detecting biomolecules based on terahertz-like frequency comb |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614391A (en) * | 2003-11-03 | 2005-05-11 | 中国科学院上海应用物理研究所 | Rapid non-loss analyzing method for Chinese Medicinal herb quality discrimination |
| CN101782510A (en) * | 2009-01-20 | 2010-07-21 | 中国科学院上海应用物理研究所 | Method for detecting anesthetic medicament |
| CN102590125A (en) * | 2011-11-30 | 2012-07-18 | 天津大学 | Biological tissue moisture measurement device and method based on terahertz wave attenuated total reflectance (ATR) |
| CN103134765A (en) * | 2013-01-29 | 2013-06-05 | 天津大学 | Chinese medicine sample authenticity preliminary screening method based on terahertz time-domain spectrum |
| CN107677601A (en) * | 2017-10-23 | 2018-02-09 | 中国科学院重庆绿色智能技术研究院 | The decay for detecting micro liquid Terahertz wave spectrum is totally reflected micro-fluidic prism and preparation method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004286716A (en) * | 2003-03-25 | 2004-10-14 | Institute Of Physical & Chemical Research | Target distinguishing method and device by terahertz wave spectroscopic measurement |
| CN101435771B (en) * | 2008-07-15 | 2011-06-15 | 中国科学院上海应用物理研究所 | Efedrina for identifying different optical rotation performances by THz-TDS |
| JP5848621B2 (en) * | 2012-01-25 | 2016-01-27 | 浜松ホトニクス株式会社 | Drug evaluation method and drug evaluation apparatus |
| JP2013167543A (en) * | 2012-02-16 | 2013-08-29 | National Institute Of Advanced Industrial & Technology | Screening device using terahertz wave |
| CN103674887B (en) * | 2013-12-16 | 2016-01-27 | 青海春天药用资源科技利用有限公司 | The Infrared spectroscopy authentication method of Cordyceps sinensis herb |
| CN104316487B (en) * | 2014-09-19 | 2017-02-15 | 北京环境特性研究所 | Forbidden objects detection method and device |
| CN104849233B (en) * | 2015-05-13 | 2018-11-02 | 河南工业大学 | A kind of method and device of detection cereal new-old degree |
| CN106960091B (en) * | 2017-03-20 | 2020-05-05 | 南京林业大学 | THz spectrum rapid nondestructive testing method for fresh meat freshness K value |
| CN107328736A (en) * | 2017-07-13 | 2017-11-07 | 深圳市太赫兹系统设备有限公司 | Ginseng discrimination method and system |
| CN109030405A (en) * | 2018-05-25 | 2018-12-18 | 深圳市太赫兹科技创新研究院有限公司 | The method of Electromagnetic Wave Detection cordyceps sinensis quality based on Terahertz frequency range |
-
2018
- 2018-05-25 CN CN201810515144.9A patent/CN109030405A/en active Pending
-
2019
- 2019-01-31 WO PCT/CN2019/074049 patent/WO2019223364A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614391A (en) * | 2003-11-03 | 2005-05-11 | 中国科学院上海应用物理研究所 | Rapid non-loss analyzing method for Chinese Medicinal herb quality discrimination |
| CN101782510A (en) * | 2009-01-20 | 2010-07-21 | 中国科学院上海应用物理研究所 | Method for detecting anesthetic medicament |
| CN102590125A (en) * | 2011-11-30 | 2012-07-18 | 天津大学 | Biological tissue moisture measurement device and method based on terahertz wave attenuated total reflectance (ATR) |
| CN103134765A (en) * | 2013-01-29 | 2013-06-05 | 天津大学 | Chinese medicine sample authenticity preliminary screening method based on terahertz time-domain spectrum |
| CN107677601A (en) * | 2017-10-23 | 2018-02-09 | 中国科学院重庆绿色智能技术研究院 | The decay for detecting micro liquid Terahertz wave spectrum is totally reflected micro-fluidic prism and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 达里宇舒·萨义德齐亚: "《太赫兹成像、传感及通信技术手册》", 31 May 2016, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019223364A1 (en) * | 2018-05-25 | 2019-11-28 | 深圳市太赫兹科技创新研究院有限公司 | Method for detecting quality of cordyceps sinensis based on electromagnetic wave in terahertz band |
| CN110108647A (en) * | 2019-04-30 | 2019-08-09 | 深圳市太赫兹科技创新研究院有限公司 | A kind of discrimination method and identification system of meat kind |
| CN110108648A (en) * | 2019-04-30 | 2019-08-09 | 深圳市太赫兹科技创新研究院有限公司 | A kind of discrimination method and identification system of dried orange peel |
| CN114184575A (en) * | 2021-12-02 | 2022-03-15 | 福州大学 | Liquid refractive index sensing system and method based on metal grating terahertz super surface |
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