CN110044839A - The detection method and detection system of bottling liquid - Google Patents
The detection method and detection system of bottling liquid Download PDFInfo
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- CN110044839A CN110044839A CN201910339373.4A CN201910339373A CN110044839A CN 110044839 A CN110044839 A CN 110044839A CN 201910339373 A CN201910339373 A CN 201910339373A CN 110044839 A CN110044839 A CN 110044839A
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- 238000001228 spectrum Methods 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000000862 absorption spectrum Methods 0.000 claims description 3
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- 238000001819 mass spectrum Methods 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 238000001237 Raman spectrum Methods 0.000 abstract description 4
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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
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
-
- 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
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/068—Optics, miscellaneous
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Toxicology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The detection method and detection system of present invention offer bottling liquid.The system comprises: transmitting optical path and receiving light path, wherein be in predetermined angle between the optical axis of the transmitting optical path and the optical axis of the receiving light path；The transmitting optical path is to emit THz wave to tested bottling liquid；THz wave of the receiving light path to receive the tested bottling liquid information of carrying through the tested bottling liquid reflection；The substance spectrum of the tested bottling liquid of the THz wave of the reflection, which be used to compose with the substance of several bottling liquids, to be compared, to identify which kind of substance the tested bottling liquid is.Structure of the invention is simple, it is easy to use, bottling liquid is detected based on THz wave and can identify whether the liquid is dangerous material, for using the prior arts such as Raman spectrum, X-ray, dielectric constant, detection accuracy of the invention is higher, and will not cause radiation injury to human body.
Description
Technical field
The present invention relates to safety check technical fields, more particularly to the detection method and detection system of bottling liquid.
Background technique
Dangerous liquid inspection is the important detection project of relationship public safety.Those have strong bio-toxicity, and chemistry is rotten
Corrosion or inflammable and explosive liquid object have become the indispensable detection project of crowded region and important events.For example, in sea
The occasions such as pass, frontier defense, public transport (civil aviaton, high-speed rail, subway etc.), important venue (museum, exhibition center, convention), when
When passenger holds liquid into these places, security staff can be checked the liquid of passenger, and some even may require that liquid
Holder directly abandons or scene is drunk to prove held liquid as non-dangerous article.
At this stage, it is roughly divided into for the liquid detecting equipment of public safety following several:
1) it is based on Raman spectrum identification technology
The Raman spectral characteristics of different liquids are different, distinguish class of liquids with this.However, Raman spectrum identification technology without
Method detects nontransparent liquid containing bottle.
2) it is based on X-ray detection technology
Using x-ray bombardment liquid, the security attribute of liquid can be accurately determined by atomic number and density.So
And X-ray detection technology has ionising radiation, long-time service can cause harm to the human body.
3) it is based on dielectric constant discrimination technology
Using quasi-static computed tomography, by measuring the dielectric constant and conductivity of testing liquid, thus
Judge that its is flammable and explosive.It can be in the case where being not directly contacted with liquid by liquid explosives, gasoline, acetone, ethyl alcohol, Tianna solution
The equal safe liquids such as flammable and combustible liquids and water, cola, milk, fruit juice distinguish.However, the judgement of dielectric constant discrimination technology
Accuracy rate is lower.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide the detection method of bottling liquid and inspections
Examining system detects bottling liquid based on THz wave, and then identifies whether bottling liquid is dangerous material, is made up with this existing
The above deficiency of liquid detecting equipment.
In order to achieve the above objects and other related objects, the present invention provides a kind of detection method of bottling liquid, comprising: hair
THz wave is penetrated to tested bottling liquid；Receive the tested bottling liquid information of carrying through the tested bottling liquid reflection too
Hertz wave；The THz wave of the reflection is analyzed, the substance spectrum of the tested bottling liquid is therefrom obtained；By the substance spectrum with
The substance spectrum of several bottling liquids prestored is compared, to identify which kind of substance the tested bottling liquid is.
In one embodiment of the invention, several bottling liquids prestored are divided into safe liquid and non-security liquid；
The method also includes: identify the tested bottling liquid be which kind of substance after, export the substance be safe liquid or
The discrimination results of non-security liquid.
In one embodiment of the invention, analysis obtains the object of the tested bottling liquid from the THz wave of the reflection
Mass spectrographic implementation includes: that the THz wave of the reflection is converted to electric signal；Carrying is extracted from the electric signal
The signal of tested bottling liquid information；The Time Domain Spectrum of the signal for carrying tested bottling liquid information is converted into frequency domain spectra,
Recycle Terahertz absorption spectra calculation formula that the substance spectrum of the tested bottling liquid is calculated.
In one embodiment of the invention, analysis obtains the object of the tested bottling liquid from the THz wave of the reflection
Mass spectrographic implementation further include: locking phase processing is carried out to the electric signal；It is mentioned from through the locking phase treated electric signal
Take out the signal for carrying tested bottling liquid information；The signal for carrying tested bottling liquid information is amplified and gone
It makes an uproar, then carries out Fast Fourier Transform (FFT) again.
In order to achieve the above objects and other related objects, the present invention provides a kind of detection system of bottling liquid, comprising: hair
Penetrate optical path and receiving light path, wherein be in predetermined angle between the optical axis of the transmitting optical path and the optical axis of the receiving light path；Institute
Transmitting optical path is stated to emit THz wave to tested bottling liquid；The receiving light path is tested bottled liquid through described to receive
The THz wave of the tested bottling liquid information of the carrying of body reflection；The substance of the tested bottling liquid of the THz wave of the reflection
Spectrum, which be used to compose with the substance of several bottling liquids, to be compared, to identify which kind of substance the tested bottling liquid is.
In one embodiment of the invention, the transmitting optical path includes: transmitting antenna, for emitting THz wave；First thoroughly
Mirror, for the THz wave transmission path to be collimated into parallel transmission；Second lens, for converging at the THz wave
The surface of the tested bottling liquid.The receiving light path includes: the third lens, anti-through the tested bottling liquid for receiving
The THz wave of the tested bottling liquid information of the carrying penetrated, and the THz wave transmission path is collimated into parallel transmission；4th
Lens, for the THz wave to be converged at receiving antenna；The receiving antenna, for receiving the Terahertz of the convergence
Wave.
In one embodiment of the invention, the system also includes: femto-second laser, to launch high-frequency pulse light；It protects
Polarisation is fine, the high-frequency pulse light to be incident on the transmitting antenna；The transmitting antenna is in applying bias voltage
The THz wave is inspired under state.
In one embodiment of the invention, first lens, second lens, the third lens and the described 4th
TPX lens are respectively adopted in lens.
In one embodiment of the invention, the system also includes: memory module, to store the substance of several bottling liquids
Spectrum and every kind of bottling liquid whether be safe liquid information；Processing module, to analyze the received terahertz of the receiving light path
Hereby wave therefrom obtains the substance spectrum of the tested bottling liquid；Several bottles that substance spectrum is prestored with the memory module
Whether the substance spectrum of dress liquid is compared, be which kind of substance and be safe liquid to identify the tested bottling liquid
Body.
In one embodiment of the invention, arbitrary value of the predetermined angle between 20 degree and 90 degree.
As described above, the detection method and detection system of bottling liquid of the invention, based on THz wave to bottling liquid
It carries out being detected and characterized whether it is dangerous material, have the advantages that
1. high-penetration: the present invention for it is many nonpolarity and nonmetallic substances, such as: dielectric substance, packing box, clothing
The packaging materials such as clothes, school bag, cardboard, ceramics, plastics have stronger penetration power, can be used to carry out matter to packaged article
Amount checks, also may be implemented to carry out penetrating clothing detection and high resolution imaging identification to the hiding article that personnel carry；
2. low energy: the energy of photon contained in terahertz emission is in 1meV magnitude, the only grade of milli electron-volt
Not, compared with the radiation in other frequency ranges such as X-ray relatively from the point of view of, be mobile phone radiation much smaller than the ionization energy of human skin
One thousandth, be far below human-body safety threshold value, radiation injury will not be caused for human body；
3. recognition capability is strong: many substances have a spectral information very rich in THz wave band, the vibration of macromolecular and turn
Kinetic energy grade etc. is all in the band limits of THz wave, and minor alteration caused by the structure composition to sample can be with speed
Make analysis and discrimination.Different liquid has to one's name Terahertz dactylogram itself, and resolving accuracy is high, and detection is accurate
Rate is high.
Detailed description of the invention
Fig. 1 is shown as the flow diagram of the bottling liquid detection method in one embodiment of the invention.
Fig. 2 is shown as the structural schematic diagram of the bottling liquid detection system in one embodiment of the invention.
Fig. 3 A is shown as the optical path analogous diagram of detection system shown in Fig. 2.
Fig. 3 B is shown as the optical path analogous diagram of the bottling liquid detection system in another embodiment of the present invention.
Fig. 4 is shown as the external structure of the bottling liquid detection system in one embodiment of the invention.
Component label instructions
21 transmitting optical paths
22 receiving light paths
1 transmitting antenna
2,3,5,6 lens
4 tested bottling liquids
7 receiving antennas
8 transmitting optical path sleeves
9 receiving light path sleeves
10 end faces
S11~S14 step
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It please refers to Fig.1 to Fig.4.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Referring to Fig. 1, detecting bottled liquid based on THz wave the present embodiment provides a kind of detection method of bottling liquid
Which kind of substance body is.Bottling liquid includes but is not limited to: cola, orange juice, Sprite, rosin, gasoline, diesel oil etc..The method
The following steps are included:
S11: transmitting THz wave to tested bottling liquid；
Terahertz (terahertz, THz) wave typically refers to frequency range between 0.1~10THz (1THz=1012Hz)
Electromagnetic wave, wave-length coverage is 30 μm~3 000 μm, referred to as millimeter wave or submillimeter wave.THz wave is in electromagnetic spectrum
In between millimeter wave and far red light, be a kind of novel in macroelectronics to the wave band of microcosmic photonics transition
Far infrared coherent source, different liquids substance this wave band spectrum diverse nature to meeting diversified liquid substance
Detection has very important significance.High-penetration, low energy possessed by THz wave have the characteristics such as identification physical capacity
Just meet needed for liquid detecting.
S12: the THz wave of the tested bottling liquid information of carrying through the tested bottling liquid reflection is received；
S13: analyzing the THz wave of the reflection, therefrom obtains the substance spectrum of the tested bottling liquid；
Specifically, it firstly, the THz wave of the reflection is converted to electric signal, then, is mentioned from the electric signal
The signal for carrying tested bottling liquid information is taken out, finally, by the Time Domain Spectrum of the signal for carrying tested bottling liquid information
Frequency domain spectra is converted to, recycles Terahertz absorption spectra calculation formula that the substance spectrum of the tested bottling liquid is calculated.
In more detail, after obtaining the electric signal, locking phase processing is first carried out to it, then handle from through the locking phase
The signal for carrying tested bottling liquid information is extracted in electric signal afterwards, then, then the carrying is tested bottling liquid and is believed
The signal of breath is amplified and is denoised, and then carries out Fast Fourier Transform (FFT) again.
S14: substance spectrum is compared with the substance of several bottling liquids prestored spectrum, to identify the quilt
Which kind of substance survey bottling liquid is.
In another embodiment, in order to further identify whether bottling liquid is dangerous material, it is described prestore it is several
Bottling liquid need to be divided into safe liquid and non-security liquid in advance, after step s 14, show that tested bottling liquid is safety
The discrimination results of liquid or non-security liquid, and exported.
Referring to Fig. 2, the present embodiment provides a kind of bottling liquid detection system for realizing the proposed method of embodiment as above, it should
Detection system is mainly made of transmitting optical path 21 and receiving light path 22, will be described in detail below.
The detection system of the present embodiment is made of 7 optical elements, and 1 is transmitting antenna, and 2,3,5 and 6 be four parameter phases
Same lens, 4 be tested bottling liquid, and 7 be receiving antenna.Wherein, 1, the 2 and 3 composition transmitting compositions of optical path 21,5,6 and 7 receive
Optical path 22.
In the present embodiment, the angle emitted between optical path 21 and 22 optical axis of receiving light path is 90 °.Fig. 3 A is shown as Fig. 2 institute
Show the optical path analogous diagram of detection system.Certainly, in other embodiments, emit the angle between optical path 21 and 22 optical axis of receiving light path
It can any setting value between 20 degree and 90 degree.The angle that Fig. 3 B is shown as between transmitting optical path and receiving light path optical axis is 20
The optical path analogous diagram of detection system when spending.
In the present embodiment, 2,3,5 and 6 four lens are preferably TPX lens.TPX lens weight is extremely light, focal length is short, converges
Poly- effect is obvious.Currently there are Terahertz probe be mostly reflecting mirror composition light path system, debugging difficulty is big, solidification
Process is complicated, and finally formed light path module is an optical path length, bulky module.Moreover, reflecting mirror self weight is larger,
With access times and using the increase of time, lens position can occur minor shifts, just need manual calibration at this time.This implementation
The optical path that example is made of lens is compared with the prior art, it is easier to keep the coaxiality of optical path, debugging process is simple, and uses week
Phase is longer.
Emit optical path 21 to emit THz wave to tested bottling liquid 4.Receiving light path 22 is to receive through being tested bottle
Fill the THz wave for the tested bottling liquid information of carrying that liquid 4 reflects.
Specifically, transmitting antenna 1 issues the THz wave that angle is 25 ° (example value), after lens 2, lens 2 will be sent out
Astigmatism is collimated into parallel wave, which is reflected to the end face of lens 5 after lens 3 converge in fluid to be measured surface.Thoroughly
After the THz wave transmission path that fluid to be measured reflects is collimated into parallel transmission by mirror 5, receiving antenna 7 is converged in by lens 6
End face.
In another embodiment, detection system further comprises femto-second laser and polarization maintaining optical fibre.Femto-second laser hair
High-frequency pulse light is projected, high-frequency pulse light is incident on transmitting antenna 1 by polarization maintaining optical fibre, in applying bias voltage (such as 100V
High pressure) in the state of transmitting antenna 1 inspire pulsewidth be less than 100fs terahertz pulse signal (i.e. THz wave), then too
Hertz pulse signal is incident to testing liquid surface through lens 2 and 3.
When terahertz pulse signal focus is incident to liquid containing bottle surface, can first occur for the first time with liquid containing bottle
Reflection, is equivalent to airborne signals and is reflected back receiving antenna 7, then can carry out the second secondary reflection, the signal being reflected back with liquid again
Information, that is, the signal for carrying fluid to be measured is modulated, and then can be also received the reception of antenna 7, because light path is different therefore can be distinguished aobvious
Show.THz wave is beaten to return in system in testee back reflection, by comparing the spectral property of incident light and reflected light, can obtain
To the relevant physical properties of testee.
When receiving antenna 7 receives reflected terahertz pulse optical signal, photoelectric conversion processing is first passed through, later
Its advanced horizontal lock is handled, is found in the signal for adulterating many noises and processing is amplified by modulated signal is allowed to
It is distinguished out, in the host computer that then signal of the carrying fluid to be measured information after enhanced processing will be transmitted.
Upper computer software can first carry out denoising smooth processing to it in the useful signal for receiving transmission, remove spuious peak
Influence, quick FFT processing is then carried out to it, Time Domain Spectrum is converted into frequency domain spectra, then by being inhaled using existing Terahertz
Receive the substance spectrum that spectrum calculation formula obtains fluid to be measured from frequency domain spectra.Then, if by existing in substance spectrum and database
The substance spectrum of dry bottling liquid is compared, to identify which kind of substance the tested bottling liquid is.In addition, in database
It is also stored with the information whether every kind of bottling liquid belongs to dangerous material, after judging which kind of substance tested bottling liquid is,
Further export the liquid whether be safe liquid testing result.
It should be noted that in other embodiments, bottling liquid detection system further includes processing module and memory module,
For replacing host computer to realize analytic function.Specifically, the substance that memory module stores several bottling liquids is composed and every kind bottled
Liquid whether be safe liquid information；Processing module analyzes the received THz wave of receiving light path, therefrom obtains described
The substance spectrum of tested bottling liquid；The substance spectrum for several bottling liquids that substance spectrum is prestored with the memory module is carried out
It compares, is which kind of substance and whether is safe liquid to identify the tested bottling liquid.
Referring to Fig. 4, being shown as a kind of external structure of bottling liquid detection system of the invention, wherein two sides
Transmitting optical path shown in Fig. 2 and receiving light path are respectively provided in sleeve 8 and 9, the oval circular hole among end face 10 is for being aligned
Tested bottling liquid.At work, tested bottling liquid is placed in system end face 10 to the detection system, and the transmitting of transmitting optical path is too
Hertz light projects the terahertz light being reflected back to tested bottling liquid from oval circular hole and enters reception from the ellipse circular hole again
Optical path.By software analysis can quickly obtain fluid to be measured whether be dangerous material conclusion.
In conclusion the detection method and detection system of bottling liquid of the invention, are detected bottled based on THz wave
Liquid simultaneously can identify whether the liquid is dangerous material, compared to using the prior arts such as Raman spectrum, X-ray, dielectric constant
For, structure of the invention is simple, is easy to use, and detection accuracy is higher, will not cause radiation injury to human body.So this
Invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of detection method of bottling liquid characterized by comprising
Emit THz wave to tested bottling liquid；
Receive the THz wave of the tested bottling liquid information of carrying through the tested bottling liquid reflection；
The THz wave of the reflection is analyzed, the substance spectrum of the tested bottling liquid is therefrom obtained；
The substance is composed to compose with the substance of several bottling liquids prestored and is compared, described is tested bottled liquid to identify
Which kind of substance body is.
2. the method according to claim 1, wherein several bottling liquids prestored are divided into safe liquid
With non-security liquid；The method also includes:
After identifying the tested bottling liquid and being which kind of substance, exporting the substance is safe liquid or non-security liquid
Discrimination results.
3. the method according to claim 1, wherein analysis obtains the quilt from the THz wave of the reflection
Survey bottling liquid the mass spectrographic implementation of object include:
The THz wave of the reflection is converted into electric signal；
The signal for carrying tested bottling liquid information is extracted from the electric signal；
The Time Domain Spectrum of the signal for carrying tested bottling liquid information is converted into frequency domain spectra, recycles Terahertz absorption spectra meter
Calculate the substance spectrum that the tested bottling liquid is calculated in formula.
4. according to the method described in claim 3, obtaining the quilt it is characterized in that, analyzing from the THz wave of the reflection
Survey the mass spectrographic implementation of object of bottling liquid further include:
Locking phase processing is carried out to the electric signal；
The signal for carrying tested bottling liquid information is extracted from through the locking phase treated electric signal；
The signal for carrying tested bottling liquid information is amplified and denoised, then carries out Fast Fourier Transform (FFT) again.
5. a kind of detection system of bottling liquid characterized by comprising transmitting optical path and receiving light path, wherein the transmitting
It is in predetermined angle between the optical axis of optical path and the optical axis of the receiving light path；
The transmitting optical path is to emit THz wave to tested bottling liquid；
Terahertz of the receiving light path to receive the tested bottling liquid information of carrying through the tested bottling liquid reflection
Wave；
The substance spectrum of the tested bottling liquid of the THz wave of the reflection, which be used to compose with the substance of several bottling liquids, to be carried out
It compares, to identify which kind of substance the tested bottling liquid is.
6. system according to claim 5, which is characterized in that
The transmitting optical path includes:
Transmitting antenna, for emitting THz wave；
First lens, for the transmission path of the THz wave to be collimated into parallel transmission；
Second lens, for the THz wave to be converged to the surface of the tested bottling liquid；
The receiving light path includes:
The third lens, for receiving the THz wave of the tested bottling liquid information of carrying through the tested bottling liquid reflection,
And the transmission path of the THz wave is collimated into parallel transmission；
4th lens, for the THz wave to be converged at receiving antenna；
The receiving antenna, for receiving the THz wave of the convergence.
7. system according to claim 6, which is characterized in that further include:
Femto-second laser, to launch high-frequency pulse light；
Polarization maintaining optical fibre, the high-frequency pulse light to be incident on the transmitting antenna；The transmitting antenna is in applied bias
The THz wave is inspired in the state of voltage.
8. system according to claim 6, which is characterized in that first lens, second lens, the third are saturating
TPX lens are respectively adopted in mirror and the 4th lens.
9. system according to claim 5, which is characterized in that further include:
Memory module, the substance to store several bottling liquids compose and every kind of bottling liquid whether be safe liquid information；
Processing module therefrom obtains the object of the tested bottling liquid to analyze the received THz wave of the receiving light path
Mass spectrum；The substance spectrum that the substance composes several bottling liquids prestored with the memory module is compared, to identify
Which kind of substance whether the tested bottling liquid be and be safe liquid.
10. system according to claim 5, which is characterized in that the predetermined angle is any between 20 degree and 90 degree
Value.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485218A (en) * | 2020-11-05 | 2021-03-12 | 电子科技大学中山学院 | Terahertz dangerous liquid identification method based on artificial neural network |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080048678A1 (en) * | 2006-08-28 | 2008-02-28 | Canon Kabushiki Kaisha | Inspection apparatus using electromagnetic waves |
| CN106323907A (en) * | 2016-08-09 | 2017-01-11 | 上海拓领光电科技有限公司 | Optical fiber coupling terahertz time-domain spectroscopy testing system |
| CN207798672U (en) * | 2017-12-28 | 2018-08-31 | 深圳市太赫兹科技创新研究院 | Multifrequency Terahertz detection device and system |
| CN208013069U (en) * | 2018-03-07 | 2018-10-26 | 深圳市鹏星光电科技有限公司 | A kind of reflective measuring device of Terahertz |
| CN109406445A (en) * | 2018-09-29 | 2019-03-01 | 深圳市华讯方舟太赫兹科技有限公司 | Liquid identification method, feature extracting method, Liquid identification device and storage device |
| CN109580534A (en) * | 2018-11-30 | 2019-04-05 | 深圳市太赫兹科技创新研究院有限公司 | Substance classes recognition methods, terahertz time-domain spectroscopy instrument system and terminal device |
-
2019
- 2019-04-25 CN CN201910339373.4A patent/CN110044839A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080048678A1 (en) * | 2006-08-28 | 2008-02-28 | Canon Kabushiki Kaisha | Inspection apparatus using electromagnetic waves |
| CN106323907A (en) * | 2016-08-09 | 2017-01-11 | 上海拓领光电科技有限公司 | Optical fiber coupling terahertz time-domain spectroscopy testing system |
| CN207798672U (en) * | 2017-12-28 | 2018-08-31 | 深圳市太赫兹科技创新研究院 | Multifrequency Terahertz detection device and system |
| CN208013069U (en) * | 2018-03-07 | 2018-10-26 | 深圳市鹏星光电科技有限公司 | A kind of reflective measuring device of Terahertz |
| CN109406445A (en) * | 2018-09-29 | 2019-03-01 | 深圳市华讯方舟太赫兹科技有限公司 | Liquid identification method, feature extracting method, Liquid identification device and storage device |
| CN109580534A (en) * | 2018-11-30 | 2019-04-05 | 深圳市太赫兹科技创新研究院有限公司 | Substance classes recognition methods, terahertz time-domain spectroscopy instrument system and terminal device |
Non-Patent Citations (1)
| Title |
|---|
| 吴勤等: "《太赫兹技术发展与应用》", 31 August 2018, 中国宇航出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485218A (en) * | 2020-11-05 | 2021-03-12 | 电子科技大学中山学院 | Terahertz dangerous liquid identification method based on artificial neural network |
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