CN109580533A - Cigaratte filter monitoring method and system - Google Patents
Cigaratte filter monitoring method and system Download PDFInfo
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- CN109580533A CN109580533A CN201811451812.2A CN201811451812A CN109580533A CN 109580533 A CN109580533 A CN 109580533A CN 201811451812 A CN201811451812 A CN 201811451812A CN 109580533 A CN109580533 A CN 109580533A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000012544 monitoring process Methods 0.000 title claims description 30
- 238000002835 absorbance Methods 0.000 claims abstract description 156
- 238000012360 testing method Methods 0.000 claims abstract description 117
- 238000001228 spectrum Methods 0.000 claims abstract description 85
- 239000003550 marker Substances 0.000 claims abstract description 67
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000013074 reference sample Substances 0.000 claims abstract description 20
- 230000009466 transformation Effects 0.000 claims abstract description 10
- 235000019504 cigarettes Nutrition 0.000 claims description 58
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 239000002304 perfume Substances 0.000 claims description 10
- 238000001328 terahertz time-domain spectroscopy Methods 0.000 claims description 10
- 235000013599 spices Nutrition 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000008033 biological extinction Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000014860 sensory perception of taste Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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]
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The present invention relates to a kind of cigaratte filter detection method and systems.The described method includes: obtaining first terahertz time-domain spectrum of the THz wave at the cigaratte filter marker location to be measured；Obtain the second terahertz time-domain spectrum when THz wave passes through reference sample；Fourier transformation is carried out to first terahertz time-domain spectrum and second terahertz time-domain spectrum respectively and obtains the second Terahertz frequency domain spectra of the first Terahertz frequency domain spectra and the reference sample at the cigaratte filter marker location to be measured；Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra；And it is monitored to whether there is at the cigaratte filter marker location to be measured according to the test absorbance and adds fragrant device.The above method, which can test out to quick nondestructive to whether there is at cigaratte filter marker location, adds fragrant device.
Description
Technical field
The present invention relates to cigarette detection technique fields, more particularly to a kind of cigaratte filter monitoring method and system.
Background technique
Flavors and fragrances is added in cigarette, its role is to improve the physicochemical property of cigarette, cigarette perfume taste is modified, in certain journey
Smell and the sense of taste etc. of consumer are affected on degree.Tobacco aromaticss essence is mixed by biomolecule such as various plants oil and lipids
It closes.During perfuming cigarette, essence can be directly added into pipe tobacco, fragrant line can also be added in filter tip, or in filter tip
Essence microencapsulated capsule (referred to as " quick-fried pearl ") is added, it is more satisfactory way that quick-fried pearl is usually added into filter tip.In cigaratte filter
It introduces quick-fried pearl position and has mark.Then in cigarette process of manufacture, can there are problems that quick-fried pearl leakage is put.Traditional detection
Method can only to the spices and essence ingredient in cigarette carry out qualitative and quantitative analysis, can not quick nondestructive detect cigaratte filter mark
Show that the quick-fried pearl at position whether there is.
Summary of the invention
Based on this, it is necessary to be unable to quick nondestructive for traditional detection method and detect at cigaratte filter marker location
Add the problem of fragrant device whether there is, a kind of cigaratte filter detection method and system are provided.
A kind of cigaratte filter monitoring method adds whether fragrant device is deposited at cigaratte filter marker location to be measured for monitoring
, which comprises
Obtain first terahertz time-domain spectrum of the THz wave at the cigaratte filter marker location to be measured；
Obtain the second terahertz time-domain spectrum when THz wave passes through reference sample；
Fourier transformation is carried out to first terahertz time-domain spectrum and second terahertz time-domain spectrum respectively and obtains institute
State the second Terahertz frequency domain spectra of the first Terahertz frequency domain spectra and the reference sample at cigaratte filter marker location to be measured；
Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra；And
It is monitored to whether there is at the cigaratte filter marker location to be measured according to the test absorbance and adds fragrant device.
The test at cigaratte filter marker location to be measured is calculated using THz wave in above-mentioned cigaratte filter monitoring method
Absorbance, and will can be detected to whether there is come the cigaratte filter marker location to be measured according to the test absorbance and add fragrant dress
It sets.The above method, which can test out to quick nondestructive to whether there is at cigaratte filter marker location, adds fragrant device.
The reference sample is air in one of the embodiments,.
It is described according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra in one of the embodiments,
In the step of test absorbance is calculated, the test absorbance is calculated by using the following formula:
Wherein, Absorbance (ω) indicates test absorbance, Esam(ω) indicates the first Terahertz frequency domain spectra, Eref(ω)
Indicate the second Terahertz frequency domain spectra, ω is angular speed.
It is described in one of the embodiments, that the cigaratte filter marker location to be measured is monitored according to the test absorbance
Place includes: with the presence or absence of the step of adding fragrant device
Obtain standard cigarette filter tip comprising it is described add fragrant device when the first absorbance and the standard cigarette filter tip exist
Not comprising it is described add fragrant device when the second absorbance；The standard cigarette filter tip and the cigaratte filter to be measured are same Brand Type
Number cigaratte filter；And
The test absorbance is compared with first absorbance, second absorbance, with determine it is described to
It surveys in cigaratte filter and whether comprising described to add fragrant device.
It in one of the embodiments, further include testing to obtain institute using method identical with the test absorbance is obtained
The step of stating the first absorbance and second absorbance；
Test is when obtaining first absorbance and second absorbance, the placement position of the standard cigarette filter tip with
The placement position for obtaining the cigaratte filter to be measured when the test absorbance is identical.
It is described by the test absorbance and first absorbance, second extinction in one of the embodiments,
Whether degree is compared, to include in described the step of adding fragrant device in the determination cigaratte filter to be measured:
The test absorbance is identical as first absorbance or tolerance model in first absorbance
In enclosing, it is determined that add fragrant device comprising described at the cigaratte filter marker location to be measured；
The test absorbance is identical as second absorbance or tolerance model in second absorbance
In enclosing, it is determined that add fragrant device described in not including at the cigaratte filter marker location to be measured；And
When the test absorbance is between first absorbance and second absorbance, and not described
When within the scope of the tolerance of one absorbance and within the scope of the tolerance of second absorbance, the cigarette to be measured is determined
Add fragrant device comprising not intact at filter tip marker location.
It is described in one of the embodiments, that the cigaratte filter marker location to be measured is monitored according to the test absorbance
Place includes: with the presence or absence of the step of adding fragrant device
Obtain standard cigarette filter tip comprising it is described add fragrant device when the first absorbance；The standard cigarette filter tip and institute
Stating cigaratte filter to be measured is the cigaratte filter with brand and model；
Characteristic absorption peak peak position in the characteristic absorption peak peak position and first absorbance in the test absorbance
It is overlapped or when within the scope of tolerance, confirms to exist at the cigaratte filter marker location to be measured and add fragrant device；And
When characteristic absorption peak being not present in the test absorbance, confirm at the cigaratte filter marker location to be measured not
There are intact to add fragrant device.
A kind of cigaratte filter monitoring system, comprising:
Terahertz time-domain spectroscopy device, for obtaining THz wave the at the cigaratte filter marker location to be measured
One terahertz time-domain spectrum, and obtain the second terahertz time-domain spectrum when THz wave passes through reference sample；
Equipment is calculated, for carrying out in Fu to first terahertz time-domain spectrum and second terahertz time-domain spectrum respectively
Leaf transformation obtains second of the first Terahertz frequency domain spectra and the reference sample at the cigaratte filter marker location to be measured too
Hertz frequency domain spectra；Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra；
And
Monitoring device whether there is at the cigaratte filter marker location to be measured for being monitored according to the test absorbance
Add fragrant device.
The terahertz time-domain spectroscopy device includes femto-second laser, optical splitter, Terahertz in one of the embodiments,
Radiation source, focus set, testing jig, terahertz detector and signal amplifier；The femto-second laser is for generating femtosecond
Laser；The optical splitter is for the femtosecond laser that the femto-second laser generates to be divided into two bundles；A branch of femtosecond laser projects
Terahertz emission source to excite to obtain terahertz pulse, the terahertz pulse by focus set focus on testing jig to
Survey cigaratte filter；Reach the Terahertz by the focusing of focus set across the terahertz pulse of the cigaratte filter to be measured to visit
Interaction obtains current signal after reaching the terahertz detector simultaneously with another beam femtosecond laser after survey device；The terahertz
The current signal that hereby detector detects is exported after the signal amplifier to the calculating equipment, realizes Terahertz letter
Number acquisition.
The testing jig includes test platform and driving equipment in one of the embodiments,；The test platform is used
In placement cigaratte filter to be measured or standard cigarette filter tip；The driving equipment is for driving the test platform along direction initialization
Cigaratte filter to be measured is moved to detection zone by movement, and by next perfume (or spice) to be measured after the completion of current cigaratte filter to be measured detection
Cigarette filter tip is moved to the detection zone；The detection zone is the region that the terahertz pulse passes through the test platform.
Detailed description of the invention
Fig. 1 is the flow chart of the cigaratte filter monitoring method in an embodiment；
Fig. 2 is a specific flow chart of the step S150 in Fig. 1；
Fig. 3 is another specific flow chart of the step S150 in Fig. 1；
Fig. 4 is the standard cigarette filter tip of a certain brand and model in an embodiment containing adding fragrant device and without containing adding fragrant dress
Absorbance when setting；
Fig. 5 is the structural block diagram of the cigaratte filter monitoring system in an embodiment；
Fig. 6 is the structural schematic diagram of the terahertz time-domain spectroscopy device in an embodiment；
Fig. 7 is the structural schematic diagram of the testing jig in an embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, it is to be understood that, term " center ", " transverse direction ", "upper", "lower" "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner" and "outside" is side based on the figure
Position or positional relationship, are merely for convenience of description of the present invention and simplification of the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.This
Outside, it should be noted that when element is referred to as " being formed on another element ", it can be directly connected on another element or
Person may be simultaneously present centering elements.When an element is considered as " connection " another element, it be can be directly connected to separately
One element exists simultaneously centering elements.On the contrary, there is no centres when element is referred to as " directly existing " another element "upper"
Element.
Fig. 1 is the flow chart of the cigaratte filter monitoring method in an embodiment.The cigaratte filter monitoring method is for monitoring
The fragrant device that adds at cigaratte filter marker location to be tested whether there is.In the present case, adding fragrant device refers to addition in cigarette
To improve the physicochemical property of cigarette, cigarette perfume taste is modified, influences the devices such as consumer's smell and the sense of taste to a certain extent.Usually exist
During perfuming cigarette, adding fragrant device is the microencapsulated capsule comprising essence, also referred to as " the quick-fried pearl of essence ", referred to as " quick-fried pearl ".
Referring to Fig. 1, method includes the following steps:
Step S110 obtains first terahertz time-domain frequency spectrum of the THz wave at cigaratte filter marker location to be measured.
It can produce corresponding terahertz-wave pulse by THz wave time-domain spectroscopy device, so that the THz wave be worn
Cigaratte filter marker location to be measured is crossed, and detects to obtain the terahertz wave signal after by terahertz detector.The terahertz
Hereby wave signal collects the first terahertz time-domain frequency spectrum by calculating equipment after signal amplifier.Cigarette filter usually to be measured
Mouth can be placed on the tester rack, and THz wave passes through the cigaratte filter to be measured on testing jig to obtain corresponding first Terahertz
Time-domain spectral.
Step S120 obtains the second terahertz time-domain spectrum when THz wave passes through reference sample.
In the present embodiment, reference sample is air namely the second terahertz time-domain spectrum is that THz wave does not pass through sample
And Terahertz when collected terahertz time-domain signal, i.e. testing jig vacant (without placing cigaratte filter to be measured on testing jig)
Time Domain Spectrum.
Step S130, respectively to the first terahertz time-domain spectrum and the second terahertz time-domain spectrum carry out Fourier transformation obtain to
Survey the second Terahertz frequency domain spectra of the first Terahertz frequency domain spectra and reference sample at cigaratte filter marker location.
By Fourier transformation, the first terahertz time-domain spectral transformation is obtained into the first Terahertz frequency domain spectra, and too by second
Hertz Time Domain Spectrum is transformed to the second Terahertz frequency domain spectra.
Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra in step S140.
In the present embodiment, the test of absorbance is carried out using THz wave.Terahertz (Terahertz, THz) wave refers to frequency
Rate is in the electromagnetic wave of 0.1~10THz (0.03~3mm of wavelength), and THz wave penetrability is strong, and photon energy is small, and no ionization is broken
Bad, many biomolecule have characteristic absorption in terahertz wave band.Therefore, absorbance test is carried out using THz wave, can had
Standby higher test accuracy and lossless safety.Due to whether being mainly used for monitoring in this case in cigaratte filter comprising adding fragrant dress
It sets, therefore only needs to test the absorbance at marker location.
First Terahertz frequency domain spectra is compared with the second Terahertz frequency domain spectra, ratio is obtained, logarithm then is taken to the ratio
Obtain the test absorbance at cigaratte filter marker location to be measured.Specifically, test absorbance is calculated using following formula:
Wherein, Absorbance (ω) indicates test absorbance, Esam(ω) indicates the first Terahertz frequency domain spectra, Eref(ω)
Indicate the second Terahertz frequency domain spectra, ω is angular speed.
Step S150 adds fragrant device according to whether there is at test absorbance monitoring cigaratte filter marker location to be measured.
Specifically, the test absorbance that test obtains can be compared with the referential of setting, thus according to comparing
As a result determine that the cigaratte filter to be measured adds fragrant device with the presence or absence of described.
The test at cigaratte filter marker location to be measured is calculated using THz wave in above-mentioned cigaratte filter monitoring method
Absorbance, and will can be detected to whether there is come the cigaratte filter marker location to be measured according to the test absorbance and add fragrant dress
It sets.The above method, which can test out to quick nondestructive to whether there is at cigaratte filter marker location, adds fragrant device.
In one embodiment, step S150 can use the step in as shown in Figure 2 to execute:
Step S210 obtains first absorbance and standard cigarette filter tip of the standard cigarette filter tip when comprising adding fragrant device and exists
Not comprising the second absorbance when adding fragrant device；Standard cigarette filter tip and cigaratte filter to be measured are the cigarette filter with brand and model
Mouth.
After test obtains the absorbance of cigaratte filter marked position to be measured, remove to obtain standard cigarette filter tip comprising adding fragrant dress
The first absorbance when setting and not comprising the second absorbance for adding fragrant device.First absorbance and the second absorbance usually can be with
It is tested after obtaining to be stored in corresponding storage equipment in advance, therefore goes in the storage equipment to call when in use.
In other examples, it can also be tested to obtain and store to call next time when executing this step.Standard is fragrant
Cigarette filter tip and cigaratte filter to be measured are with brand cigaratte filter, because the cigarette of same brand different model and different brands is filtered
The fragrant device that adds in mouth is not the same, to cannot function as the multilevel iudge foundation of the absorbance of cigaratte filter to be measured.For example,
Standard cigarette filter tip and cigaratte filter to be measured can be the cigaratte filter in same manufacturer's production batch, so that it is guaranteed that monitoring result
Accuracy.Also, the fragrant device that adds for including in standard cigarette filter tip adds fragrant device for intact.
Test absorbance is compared by step S220 with the first absorbance, the second absorbance, with determination cigarette filter to be measured
Whether comprising adding fragrant device in mouth.
Specifically, the test absorbance of cigaratte filter to be measured is compared with the first absorbance and the second absorbance respectively
Compared with to whether be determined according to the degree of closeness of comparison result in cigaratte filter to be measured comprising adding fragrant device.In comparison procedure
In, it can be first compared with the first absorbance, it is identical as the first absorbance or in the first absorbance in test absorbance
When within the scope of tolerance, specific manifestation can be characterized absorption peak peak position be overlapped or it is very close when, determine cigarette to be measured
Comprising adding fragrant device at filter tip marker location.Due to the first absorbance add fragrant device it is intact in the state of obtain, can
With in determination cigaratte filter to be measured to add fragrant device intact, compare to not continue to that absorbance will be tested with the second absorbance
Compared with.In another embodiment, first test absorbance can also be compared with the second absorbance.When test absorbance and second
Absorbance is identical or when within the scope of the tolerance of the second absorbance, and determining does not have at the cigaratte filter marker location to be measured
Comprising adding fragrant device, it is compared to not continue to test absorbance with the first absorbance.
The test at cigaratte filter marker location to be measured is calculated using THz wave in above-mentioned cigaratte filter monitoring method
Absorbance, and by the test value and standard cigarette filter tip comprising the first absorbance when adding fragrant device and not comprising adding fragrant device
The second absorbance be compared, carry out the cigaratte filter marker location to be measured with the presence or absence of adding fragrant device to detect.It is above-mentioned
Method, which can test out to quick nondestructive to whether there is at cigaratte filter marker location, adds fragrant device.
In one embodiment, when test absorbance is inhaled between the first absorbance and the second absorbance, and not first
Within the scope of the tolerance of luminosity, also not within the scope of the tolerance of the second absorbance when, it may be considered that cigaratte filter to be measured
Add fragrant device comprising not intact at marker location.It is described that not intact to add fragrant device include adding that fragrant device is hollow, the shapes such as damaged
State；When adding fragrant device and being in not serviceable condition, absorbance, which will appear to be different from, intact adds fragrant device and not perfuming device
Feature, be embodied in absorbance intensity within the scope of effective spectrum between the first absorbance and the second absorbance and
Without features such as characteristic absorption peaks.Specifically, by extract and preset standard the not intact range of absorbency for adding fragrant device and
Feature determines at cigaratte filter marker location to be measured whether to include not intact to add fragrant device.Therefore, the above method not only can be with
Cigaratte filter marker location is realized with the presence or absence of adding fragrant device, can also be realized to adding the whether intact monitoring of fragrant device.Relatively
For the test methods such as traditional form and aspect chromatography and mass spectrography, the above method can test out to quick nondestructive cigarette filter
Add fragrant device with the presence or absence of intact at mouth marker location, to realize the quality monitoring to cigaratte filter.
In one embodiment, the first absorbance and the second absorbance use method identical with test absorbance is obtained to test
It obtains, namely first obtains the first terahertz time-domain spectrum of standard cigarette filter tip and the first terahertz time-domain spectrum of reference sample,
Then it carries out that corresponding absorbance is calculated after Fourier transformation obtains corresponding frequency domain spectra respectively.At this point, on testing jig
Object is comprising or not comprising adding the standard cigarette filter tip of fragrant device.In one embodiment, the first absorbance is obtained in test
And when the second absorbance, position is put with cigaratte filter to be measured when obtaining test absorbance in the placement position of standard cigarette filter tip
It sets identical, thereby further ensures that the accuracy of monitoring result.
Above-mentioned cigaratte filter monitoring method has the advantages that easy to operate, high sensitivity, it is only necessary to which simple Fourier becomes
It changes, filter tip sample is directly determined according to absorbance whether there is or not the presence for adding fragrant device, this method is intuitive efficiently, it can be achieved that quick nothing
Damage, on-line monitoring.
In one embodiment, step S150 can also be realized by the step in as shown in Figure 3:
Step S310 obtains first absorbance of standard cigarette filter tip when comprising adding fragrant device；Standard cigarette filter tip with
Cigaratte filter to be measured is the cigaratte filter with brand and model.
Step S320, the characteristic absorption peak peak position in the characteristic absorption peak peak position and the first absorbance in test absorbance
It is overlapped or when within the scope of tolerance, confirms to exist at cigaratte filter marker location to be measured and add fragrant device.
Standard filters will appear apparent characteristic absorption peak when containing fragrant device is added, in Terahertz frequency range, and this feature is inhaled
Receive peak be as adding fragrant device caused by.Therefore test absorbance is compared with the first absorbance, in the characteristic absorption of the two
Peak peak position is overlapped or when within the scope of tolerance, then can be confirmed to exist at cigaratte filter marker location to be measured and add fragrant dress
It sets.This deterministic process is simple and easy, and intuitive efficient.
Step S330 confirms at cigaratte filter marker location to be measured when characteristic absorption peak being not present in testing absorbance
There is no add fragrant device.
As previously mentioned, in cigaratte filter if not adding fragrant device, it would not existing characteristics absorption peak.Therefore
If there is no characteristic absorption peak in obtained test absorbance, so that it may determine that there is no add at cigaratte filter marker location to be measured
Fragrant device.
Fig. 4 is the standard cigarette filter tip of a certain brand and model in an embodiment containing adding fragrant device and without containing adding fragrant dress
Absorbance when setting.In Fig. 4, filter tip indicates in filter tip to include quick-fried pearl containing pearl, namely containing adding fragrant device；Filter tip is then indicated without pearl
Not comprising quick-fried pearl in filter tip, namely without containing adding fragrant device.Figure 4, it is seen that standard cigarette filter tip is containing adding perfume (or spice)
When device, there is apparent characteristic absorption peak in Terahertz frequency range, and in Terahertz frequency range without containing fragrant device is added
Without characteristic absorption peak, it is clear that the characteristic absorption peak is caused by adding fragrant device.Therefore, feature can be passed through by also having turned out
Whether the mode that absorption peak compares adds fragrant device and judges to having at cigaratte filter marker location to be measured to realize.
One embodiment of the invention also provides a kind of cigaratte filter monitoring system, for realizing perfume (or spice) in any of the preceding embodiments
Cigarette filter tip monitoring method.Fig. 5 is the structural block diagram of the cigaratte filter monitoring system in an embodiment, which monitors system
Including terahertz time-domain spectroscopy device 510, calculate equipment 520 and monitoring device 530.Wherein, terahertz time-domain spectroscopy device
510 for obtaining first terahertz time-domain spectrum of the THz wave at cigaratte filter marker location to be measured, and acquisition terahertz
The second terahertz time-domain spectrum when hereby wave is across reference sample.Equipment 520 is calculated respectively to the first terahertz time-domain spectrum and second
Terahertz time-domain spectrum carries out Fourier transformation and obtains the first Terahertz frequency domain spectra and reference at cigaratte filter marker location to be measured
Second Terahertz frequency domain spectra of sample；Test extinction is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra
Degree.Monitoring device 530, which is used to monitor to whether there is at cigaratte filter marker location to be measured according to test absorbance, adds fragrant device.
Above-mentioned cigaratte filter monitors system, and the test at cigaratte filter marker location to be measured is calculated using THz wave
Absorbance, and will can be detected to whether there is come the cigaratte filter marker location to be measured according to the test absorbance and add fragrant dress
It sets.Above system, which can test out to quick nondestructive to whether there is at cigaratte filter marker location, adds fragrant device.
In one embodiment, the structure of terahertz time-domain spectroscopy device 510 is as shown in Figure 6.Referring to Fig. 6, when the Terahertz
Domain spectral device 510 includes femto-second laser 610, optical splitter 101, terahertz emission source 106, focus set 107 and 109, surveys
Try frame (not shown), terahertz detector 104 and signal amplifier 620.Wherein, femto-second laser 610 is winged for generating
Second laser.After the femtosecond laser that femto-second laser 610 emits enters system, two-beam is divided by optical splitter 101: a branch of pumping
Light and a branch of detection light.Optical splitter 101 can be constituted using equipment such as spectroscopes.Wherein a branch of pump light projects Terahertz spoke
It penetrates on source 106 and terahertz pulse is obtained with excitation.Obtained terahertz pulse is passed through and is surveyed after the focusing of focus set 107
The cigaratte filter to be measured 108 on frame, and the THz wave collimation focusing passed through by the focus set of the other end 109 are tried, so that
The THz wave of 108 information of cigaratte filter to be measured reaches in terahertz detector 104 and phase interaction simultaneously with another beam detection light
With obtaining current signal.The current signal obtained by the detection of terahertz detector 104 transmits after the amplification of signal amplifier 620
To equipment 520 is calculated, THz wave time-domain signal is collected by calculating equipment 520.To as to test sample cigaratte filter
First terahertz time-domain spectrum.
In one embodiment, the optical path that above-mentioned pump light passes through further includes a series of reflecting mirrors 102, reflecting mirror 103 etc., with
And time delay device 105.Reflecting mirror 102 and reflecting mirror 103 are used to guide incident pump light that can accurately be transmitted to too
On Hertzion radiation source 106.By time delay device 105, the THz wave for being carried across sample and another beam can be made to visit
Survey light finally can be detected to obtain at the time of identical by terahertz detector 104, and then obtain the first terahertz time-domain spectrum.
According to terahertz time-domain spectroscopy device 510, other devices are constant, need to only remove the cigaratte filter 108 to be measured,
It is not passed through sample by the THz wave of focus set 107 and directly focuses in air, then this is loaded with air information
THz wave reaches focus set 109, finally collects second Terahertz of the THz wave time-domain signal as reference sample
Time Domain Spectrum.Generally, the second terahertz time-domain spectrum of reference sample is not needed to be repeated several times and be obtained.In one embodiment, focusing is set
Standby 107 and 109 be paraboloidal mirror.
In one embodiment, testing jig includes test platform 632 and driving equipment 634, as shown in Figure 7.Test platform 632
For placing cigaratte filter 108 or standard cigarette filter tip to be measured.Test platform 632 has detection zone.The detection zone is terahertz
Region when test platform 632 is passed through in hereby pulse.Specifically, terahertz emission source 106 after the focusing of focus set 107 from
The top of test platform 632 projects at the marker location 60 of cigaratte filter 108 to be measured.Terahertz detector 104 is then from test
Terahertz wave signal of the lower section detection of platform 632 across cigaratte filter 108 to be measured.Driving equipment 634 is for driving test flat
Platform 632 is moved along direction initialization, cigaratte filter 108 to be measured is moved to detection zone, and examine in current cigaratte filter 108 to be measured
After the completion of survey, next cigaratte filter to be measured is moved to the detection zone, to realize the automation of monitoring process.
In one embodiment, the first absorbance and the second absorbance pass through terahertz time-domain spectroscopy device 510 and test
It arrives, namely first obtains the first terahertz time-domain spectrum of standard cigarette filter tip and the first terahertz time-domain spectrum of reference sample, so
It carries out that corresponding absorbance is calculated after Fourier transformation obtains corresponding frequency domain spectra respectively afterwards.At this point, the object on testing jig
Body is comprising or not comprising adding the standard cigarette filter tip of fragrant device.In one embodiment, test obtain the first absorbance with
And when the second absorbance, the placement position of the placement position of standard cigarette filter tip and cigaratte filter to be measured when obtaining test absorbance
It is identical, thereby further ensure that the accuracy of monitoring result.
In one embodiment, calculating equipment 520 and monitoring device 530 can be independently arranged, and the two can also be collected
At on same terminal.
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 cigaratte filter monitoring method whether there is for monitoring the fragrant device that adds at cigaratte filter marker location to be measured,
It is characterized in that, which comprises
Obtain first terahertz time-domain spectrum of the THz wave at the cigaratte filter marker location to be measured；
Obtain the second terahertz time-domain spectrum when THz wave passes through reference sample；
Respectively to first terahertz time-domain spectrum and second terahertz time-domain spectrum carry out Fourier transformation obtain it is described to
Survey the second Terahertz frequency domain spectra of the first Terahertz frequency domain spectra and the reference sample at cigaratte filter marker location；
Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra；And
It is monitored to whether there is at the cigaratte filter marker location to be measured according to the test absorbance and adds fragrant device.
2. the method according to claim 1, wherein the reference sample is air.
3. the method according to claim 1, wherein described according to the first Terahertz frequency domain spectra and described
Two Terahertz frequency domain spectras were calculated in the step of test absorbance, and the test absorbance is calculated by using the following formula:
Wherein, Absorbance (ω) indicates test absorbance, Esam(ω) indicates the first Terahertz frequency domain spectra, Eref(ω) is indicated
Second Terahertz frequency domain spectra, ω are angular speed.
4. the method according to claim 1, wherein described monitor the perfume (or spice) to be measured according to the test absorbance
Include: with the presence or absence of the step of adding fragrant device at cigarette filter tip marker location
Obtain standard cigarette filter tip comprising it is described add fragrant device when the first absorbance and the standard cigarette filter tip do not wrapping
Containing it is described add fragrant device when the second absorbance；The standard cigarette filter tip and the cigaratte filter to be measured are with brand and model
Cigaratte filter；And
The test absorbance is compared with first absorbance, second absorbance, with the determination perfume (or spice) to be measured
Whether comprising described add fragrant device in cigarette filter tip.
5. according to the method described in claim 4, it is characterized in that, further including using identical with the test absorbance is obtained
Method tests the step of obtaining first absorbance and second absorbance；
Test is when obtaining first absorbance and second absorbance, the placement position of the standard cigarette filter tip with obtain
The placement position of the cigaratte filter to be measured is identical when the test absorbance.
6. according to the method described in claim 4, it is characterized in that, described by the test absorbance and first extinction
Whether degree, second absorbance are compared, to include described the step of adding fragrant device in the determination cigaratte filter to be measured
In:
It is identical as first absorbance or within the scope of the tolerance of first absorbance in the test absorbance,
It then determines and adds fragrant device comprising described at the cigaratte filter marker location to be measured；
It is identical as second absorbance or within the scope of the tolerance of second absorbance in the test absorbance,
Then determine at the cigaratte filter marker location to be measured do not include described to add fragrant device；And
It is inhaled when the test absorbance is between first absorbance and second absorbance, and not described first
When within the scope of the tolerance of luminosity and within the scope of the tolerance of second absorbance, the cigaratte filter to be measured is determined
Add fragrant device comprising not intact at marker location.
7. the method according to claim 1, wherein described monitor the perfume (or spice) to be measured according to the test absorbance
Include: with the presence or absence of the step of adding fragrant device at cigarette filter tip marker location
Obtain the first absorbance when standard cigarette filter tip adds fragrant device comprising described in；The standard cigarette filter tip with it is described to be measured
Cigaratte filter is the cigaratte filter with brand and model；And
Characteristic absorption peak peak position in the test absorbance is overlapped with the characteristic absorption peak peak position in first absorbance
Or when within the scope of tolerance, confirms at the cigaratte filter marker location to be measured and add fragrant device described in existing；And
When characteristic absorption peak being not present in the test absorbance, confirms and be not present at the cigaratte filter marker location to be measured
It is described to add fragrant device.
8. a kind of cigaratte filter monitors system characterized by comprising
Terahertz time-domain spectroscopy device, for obtain THz wave at the cigaratte filter marker location to be measured first too
Hertz Time Domain Spectrum, and obtain the second terahertz time-domain spectrum when THz wave passes through reference sample；
Equipment is calculated, for carrying out Fourier's change to first terahertz time-domain spectrum and second terahertz time-domain spectrum respectively
Get the second Terahertz of the first Terahertz frequency domain spectra and the reference sample at the cigaratte filter marker location to be measured in return
Frequency domain spectra；Test absorbance is calculated according to the first Terahertz frequency domain spectra and the second Terahertz frequency domain spectra；And
Monitoring device adds perfume (or spice) for monitoring to whether there is at the cigaratte filter marker location to be measured according to the test absorbance
Device.
9. cigaratte filter according to claim 8 monitors system, which is characterized in that the terahertz time-domain spectroscopy device packet
Include femto-second laser, optical splitter, terahertz emission source, focus set, testing jig, terahertz detector and signal amplifier；
The femto-second laser is for generating femtosecond laser；The femtosecond laser point that the optical splitter is used to generate the femto-second laser
For two beams；A branch of femtosecond laser projects terahertz emission source to excite to obtain terahertz pulse, and the terahertz pulse passes through
Focus set focuses on the cigaratte filter to be measured on testing jig；Terahertz pulse across the cigaratte filter to be measured is through over-focusing
Interaction obtains current signal after reaching the terahertz detector simultaneously with another beam femtosecond laser after the focusing of equipment；Institute
It states the current signal that terahertz detector detects to be exported after the signal amplifier to the calculating equipment, realize too
The acquisition of hertz signal.
10. cigaratte filter according to claim 9 monitors system, which is characterized in that the testing jig includes test platform
And driving equipment；The test platform is for placing cigaratte filter to be measured or standard cigarette filter tip；The driving equipment is used
In driving the test platform to move along direction initialization, cigaratte filter to be measured is moved to detection zone, and in current perfume (or spice) to be measured
Next cigaratte filter to be measured is moved to the detection zone after the completion of cigarette filter tip detection；The detection zone is the terahertz pulse
By the region of the test platform.
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