CN108226089A - Terahertz detection method - Google Patents
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- CN108226089A CN108226089A CN201711458641.1A CN201711458641A CN108226089A CN 108226089 A CN108226089 A CN 108226089A CN 201711458641 A CN201711458641 A CN 201711458641A CN 108226089 A CN108226089 A CN 108226089A
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 57
- 238000001228 spectrum Methods 0.000 claims abstract description 25
- 238000005247 gettering Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 25
- 229930091371 Fructose Natural products 0.000 claims description 13
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 claims description 12
- 239000005715 Fructose Substances 0.000 claims description 12
- 238000013102 re-test Methods 0.000 claims description 11
- 230000003595 spectral effect Effects 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000009499 grossing Methods 0.000 abstract description 4
- 230000009102 absorption Effects 0.000 description 21
- 229960002737 fructose Drugs 0.000 description 12
- 239000000126 substance Substances 0.000 description 9
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 5
- 239000008103 glucose Substances 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 1
- 239000008121 dextrose Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- BJHIKXHVCXFQLS-UYFOZJQFSA-N fructose group Chemical group OCC(=O)[C@@H](O)[C@H](O)[C@H](O)CO BJHIKXHVCXFQLS-UYFOZJQFSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 230000035515 penetration Effects 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]
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to a kind of terahertz detection method, for Object Classification, including：It repeats to test sample to be tested at least twice with THz wave, obtains respective absorption spectrum.By absorption spectra smoothing processing, the peak position of absorption spectra is demarcated.According to the peak position of calibration absorption spectra, the Terahertz Intrinsic Gettering peak position of sample to be tested is determined.By determining Terahertz intrinsic absorbed spectrum compared with the data to prestore in database, then judge that sample to be tested is true and false.The above method is easy to operate, accurate to obtain Terahertz intrinsic absorbed spectrum, and to sample to be tested without any damage.
Description
Technical field
The present invention relates to Terahertz Object Classification technical field, more particularly to terahertz detection method.
Background technology
THz wave refers to electromagnetic radiation of the frequency between 0.1~10THz, 0.03~30mm of wave-length coverage, wave band
Positioned at microwave and it is infrared between, be transitional region of the macroelectronics to microcosmic photonic propulsion, effective generate and visit due to lacking
Survey means fail preferably to be utilized always.Terahertz leads to it there are many unique the position of electromagnetic spectrum is more special
Matter：The energy of THz wave band photons is about 1~10mev, harmful ionising radiation will not be generated to biological tissue, compared to visible
Light and infrared spectrum, penetration capacity is stronger, and is not easy to be influenced to can be used for bio-imaging, medical diagnosis etc. by Rayleigh scattering；
Terahertz emission has coherence, can directly obtain amplitude and the phase information of surveyed substance so as to calculate the folding of surveyed substance
Penetrate rate and absorption coefficient etc.；The vibration of many large biological molecules and rotational frequency are at Terahertz frequency range, so utilizing terahertz
Hereby radiation can carry out fingerprint recognition to biomolecule, so as to detect the difference of substance ingredient.
Invention content
Based on this, a kind of terahertz detection method is provided.
A kind of terahertz detection method, for Object Classification, including：
It repeats to test sample to be tested at least twice with THz wave, obtains respective absorption spectrum；
Absorption spectra is smoothed, demarcates the peak position of absorption spectra；
According to the peak position of calibration absorption spectra, the Terahertz Intrinsic Gettering peak position of sample to be tested is determined；
By determining Terahertz Intrinsic Gettering peak position compared with the data to prestore in database, to judge that sample to be tested is true
It is false.
The Terahertz of the determining sample to be tested absorbs peak position in one of the embodiments, including：
The peak position that absorption spectra is demarcated in a plurality of spectral line of retest is compared；
Whether the absorption peak position for judging to be demarcated in a plurality of spectral line of retest overlaps.
Whether the absorption peak position demarcated in a plurality of spectral line for judging retest in one of the embodiments,
The step of coincidence, includes：
If the absorption peak position of calibration overlaps, using the absorption peak position of calibration as Terahertz Intrinsic Gettering peak position
It puts.
The true and false step of the judgement sample to be tested includes in one of the embodiments,：It is intrinsic by comparing Terahertz
It absorbs whether peak position overlaps with data in database, judges the true and false of sample to be tested.
The respective absorption spectrum is obtained by terahertz light spectrometer device measurement in one of the embodiments,.
The terahertz light spectrometer device includes in one of the embodiments,：
Objective table, for carrying sample to be tested；
Laser, for generating pulsed light；
Beam splitting chip, for pulsed light to be divided into pump light and detection light；
Terahertz emission end, is arranged on light path where the pump light, and the pump optical radiation to terahertz emission end is produced
Raw THz wave；
Paraboloidal mirror, the sample for receiving the THz wave and collimation focusing to the objective table carry position, and
It will transmit through the THz wave collimation focusing of sample；
Terahertz receiving terminal is arranged on the propagation path through the THz wave of sample of collimated focusing and described
Where detecting light in light path, the THz wave and the detection light are received, generates detection signal；Processing module receives institute
Detection signal is stated, and Terahertz absorption spectra is finally shown through respective handling.
The terahertz light spectrometer device further includes sample bin in one of the embodiments, for being carried for sample detection
For scheduled gaseous environment.
In one of the embodiments, the terahertz light spectrometer device measure respective absorption spectrum the step of include：
By sample bin full of nitrogen, when on objective table being zero load, made using the signal that terahertz light spectrometer device measures
For reference signal, and then measure reference signal absorption spectra；
Sample to be tested is put into sample bin, sample to be tested absorption spectra is obtained by handling accordingly.
Tabletting is made in the sample to be tested in one of the embodiments,.
The sample to be tested is fructose and high density polyethylene (HDPE) in mass ratio 1 in one of the embodiments,:4 is uniformly mixed
Combined pressure piece is made.
Above-mentioned terahertz detection method, with THz wave retest, sample to be tested, acquisition respective absorption are composed at least twice,
To absorption spectra smoothing processing, the peak position of absorption spectra is demarcated, is compared by the peak position for demarcating absorption spectra, determines to treat test sample
The Terahertz Intrinsic Gettering peak position of product, and then by determining Terahertz Intrinsic Gettering peak position and pre-stored data ratio in database
Compared with judgement sample to be tested is true and false.The above method is easy to operate, accurate to obtain Terahertz intrinsic absorbed spectrum, and to sample to be tested without
Any damage.
Description of the drawings
Fig. 1 is the flow chart of the terahertz detection method of the embodiment of the present invention；
Fig. 2 is the terahertz light spectrometer installation drawing of the embodiment of the present invention；
Fig. 3 is a kind of flow chart of implementation method of step 200 in Fig. 1；
Fig. 4 is a kind of flow chart of implementation method of step 300 in Fig. 1；
Fig. 5 be the embodiment of the present invention obtained absorption spectra is carried out it is smooth after curve graph；
Fig. 6 is a kind of flow chart of implementation method of step 400 in Fig. 1；
The curve graph that the peak position that Fig. 7 is demarcated by two absorption spectras of the embodiment of the present invention is compared；
Fig. 7 a are the partial enlarged view of A points in Fig. 7；
Fig. 7 b are the partial enlarged view of B points in Fig. 7.
Specific embodiment
It is shown in Figure 1, a kind of terahertz detection method, for Object Classification, idiographic flow include step 100~
500：
Step 100：Prepare sample to be tested.
In the present embodiment, prepared sample to be tested is standard items and levels are moderate.The sample to be tested is fruit
Sugar and high density polyethylene (HDPE) in mass ratio 1:4 are uniformly mixed and made into tabletting.
Step 200：It repeats to test sample to be tested at least twice with THz wave, obtains corresponding Terahertz absorption spectra.
In one of the embodiments, as shown in Fig. 2, the absorption spectra is measured by terahertz light spectrometer device 210.Institute
Terahertz light spectrometer device 210 is stated to include：Femto-second laser 211, beam splitting chip 212, terahertz emission end 213, paraboloidal mirror
214th, Terahertz receiving terminal 215, processing module 216, sample bin 217, objective table 218, the terahertz emission end 213, parabolic
Face mirror 214, Terahertz receiving terminal 215 and objective table 218 are positioned in sample bin 217.Sample to be tested is placed on objective table 218
On.The femto-second laser 211 gives off femtosecond laser, and beam splitting chip 212 receives femtosecond laser and breaks it into two, Yi Shuwei
Pump light, another beam are detection light, and the pump light and the light that detects are along different paths.The terahertz emission end
213 are arranged on light path where the pump light, and the pump optical radiation to terahertz emission end 213 generates THz wave, described
Paraboloidal mirror 214 is located on the direction of propagation of the THz wave, and the paraboloidal mirror 214 receives the THz wave and collimates
The sample beaten after focusing in objective table 218 carries position, and is passed after the THz wave collimation focusing after sample to be tested is transmitted
Transport to the Terahertz receiving terminal 215.The Terahertz receiving terminal 215 is arranged on light path where the detection light, the detection
Light radiation to Terahertz receiving terminal 215, while Terahertz receiving terminal 215 receive from terahertz emission end 213 generate through throwing
THz wave after 214 collimation focusing of object plane mirror generates detection signal, that is, faint electric current under the driving of terahertz pulse and believes
Number.The processing module 216 receives detection signal and obtains Terahertz absorption spectra after carrying out respective handling to detection signal.At this
It invents in the embodiment, the type of the laser is unlimited, as long as light pulse can be generated.
Corresponding Terahertz absorption spectra is measured using the terahertz light spectrometer device 210, as shown in figure 3, including following step
Suddenly：
Step 201：By sample bin 217 full of nitrogen, when on objective table being zero load, terahertz light spectrometer device is used
210 signals measured are used as with reference to signal, and then measure reference signal absorption spectra；
Step 202：Sample to be tested is put into sample bin 217, a Terahertz absorption spectra of the sample is obtained, is not changing
Under conditions of measurement process, retest is multiple, obtains the Terahertz absorption spectra after a plurality of test of sample, and preserve result.
In the present embodiment, testing time is selected twice, therefore duplicate measurements obtains the Article 2 Terahertz absorption spectra of the sample, and preserves
As a result.
Step 300：Absorption spectra is smoothed, demarcates the peak position of absorption spectra.
In one of the embodiments, as shown in figure 4, a plurality of Terahertz absorption spectra of the sample to obtaining do it is following identical
Operation, include the following steps：
Step 301：Smooth operation is carried out to obtained absorption spectra；
Step 302：The peak position of absorption spectra after smooth is calibrated.
In the present embodiment, by taking duplicate measurements obtains two Terahertz absorption spectras twice as an example, the smooth software used is
MATLAB, as shown in figure 5, the absorption spectra that A solid lines are the sample to be tested actually obtained does not do smoothing processing, B solid lines is pass through
Absorption spectra after smooth, smooth operation herein can remove some ripples between absorption spectra frequency range 0.1THZ-0.8THZ positions
Noise simultaneously so that the noise peak between absorption spectra high band 2.5THZ-4.0THZ positions is reduced, in this way in extraction sample to be tested
Intrinsic absorbed spectrum when just reduce many unnecessary interference.Certainly, according to the design needs, the smooth software can be it
His software, such as origin softwares, as long as the smoothing processing to curve can be realized.
Such as the target cross in Fig. 5, it can be seen that not only the intrinsic absorbed spectrum containing substance is also for the absorption peak marked at this time
There is the noise peak of high band.
Step 400：According to the peak position of calibration absorption spectra, the Terahertz Intrinsic Gettering peak position of sample to be tested is determined.
As shown in fig. 6, include the following steps：
Step 401：The peak position that absorption spectra is demarcated in a plurality of spectral line of retest is compared；
Step 402：Whether the absorption peak position for judging to be demarcated in a plurality of spectral line of retest overlaps.
The step of whether the absorption peak position for judging to be demarcated in a plurality of spectral line of retest overlaps includes：If calibration
Absorption peak position overlap, then using the absorption peak position of calibration as Terahertz Intrinsic Gettering peak position.
In one of the embodiments, as shown in fig. 7, by taking duplicate measurements sample twice as an example, two calibration peaks are being obtained
After being worth the absorption spectra of position, the peak position demarcated in two absorption lines is compared.As shown in Figure 7, two absorptions
Spectral line be it is smooth after absorption spectra, due to being test twice that same sample to be tested carries out, therefore absorption line essentially coincides.It will
The peak position of absorption peak demarcated in two absorption spectras is compared, and judges the absorption peak position demarcated in two spectral lines
Whether overlap.If the peak position of calibration overlaps, that demarcates absorbs the Terahertz Intrinsic Gettering that peak position is the sample to be tested
Peak position.As shown in fig. 6, cross represents the peak value calibration of smooth rear fructose 1, circle represents the peak value calibration of smooth rear fructose 2,
Frequency shown in Fig. 7 a is 1.6958THZ positions, and the peak position of calibration overlaps, then it is that this is treated that frequency, which is 1.6958THZ positions,
One intrinsic absorbed spectrum of sample.Shown in Fig. 7 b, the absorption peak position of two spectrum calibration is misaligned, illustrates that the position is demarcated
Absorption peak position belong to noise.Also it is exactly further accurately to be extracted according to noise characteristic since the appearance position of noise is random
Go out the Intrinsic Gettering peak position of sample to be tested.
Step 500：It is to be measured to judge by determining Terahertz Intrinsic Gettering peak position compared with pre-stored data in database
Sample is true and false.
The database pre-stored data is the Terahertz intrinsic absorbed spectrum of collected standard items, preserves its corresponding Terahertz
The related data of intrinsic absorbed spectrum.
The true and false step of the judgement sample to be tested includes：By comparing in Terahertz Intrinsic Gettering peak position and database
Whether data overlap, and judge the true and false of sample to be tested.
In the present embodiment, measure sample to be tested be concentration 20% fructose, intrinsic absorbed spectrum 1.6958THZ,
2.1141THZ、2.3980THZ.Intrinsic absorbed spectrum and database are compared discovery, 1.6958THZ in the absorption peak,
The database absorption peak registration highest of 2.1141THZ, 2.3980THZ and fructose, therefore judged according to these three intrinsic absorbed spectrums
Sample to be tested is fructose.
Above-mentioned terahertz detection method is repeated to test sample to be tested at least twice with THz wave, obtains respective absorption spectrum,
Absorption spectra is smoothed, and calibrates corresponding peaks position, and then realizes the extraction of Terahertz intrinsic absorbed spectrum.Method
It is easy to operate, it is lossless to sample to be tested and significantly more efficient avoid influence of noise in absorption spectra.By the determining intrinsic suction of Terahertz
Peak position is received compared with the data to prestore in database, to judge that sample to be tested is true and false.
When sample to be tested levels are higher, i.e., there is saturation in the Terahertz absorption spectra of measured sample to be tested, sharp at this time
The intrinsic absorbed spectrum of sample to be tested can effectively be extracted by being remained unchanged with this method, and the Intrinsic Gettering peak position only extracted occurs inclined
It moves, it is therefore desirable to carry out corresponding modification and addition in the database, can effectively be identified later.
In the present embodiment, by taking sample to be tested ingredient is fructose as an example, if fructose concentration is different, intrinsic absorbed spectrum
Quantity it is different, work as excessive concentration, the position at intrinsic peak accordingly drifts about in Terahertz absorption spectra, for example, its frequency values is
The position of the absorption peak of 1.69THZ may drift to 1.8THZ or other positions.Therefore according to the design needs, the database into
The corresponding modification of row and addition, i.e., the intrinsic absorbed spectrum of the fructose of described database addition various concentration, while ensure database
In intrinsic absorbed spectrum real-time update.
It, at this time still can be with according to obtained intrinsic absorbed spectrum when sample to be tested is not that single substance contains Multiple components
Judged.
In one of the embodiments, sample to be tested include two kinds of ingredients of glucose and fructose, associated databases comprising
The intrinsic absorbed spectrum of glucose is also stored while the intrinsic absorbed spectrum of fructose, intrinsic absorbed spectrum is sentenced according to specific to glucose
Whether contain dextrose components in disconnected sample to be tested.
Certainly it may include the intrinsic absorbed spectrum of many kinds of substance, such as glucose, lactose according to the design needs, in database
Deng.When sample to be tested includes many kinds of substance, it can measure and included in sample to be tested according to the specific intrinsic absorbed spectrum of substance
Substance.Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned implementation
The all possible combination of each technical characteristic in example is all described, as long as however, the combination of these technical characteristics is not present
Contradiction is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description 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 those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of terahertz detection method, for Object Classification, which is characterized in that including：
It repeats to test sample to be tested at least twice with THz wave, obtains respective absorption spectrum；
Absorption spectra is smoothed, demarcates the peak position of absorption spectra；
According to the peak position of calibration absorption spectra, the Terahertz Intrinsic Gettering peak position of sample to be tested is determined；
By determining Terahertz Intrinsic Gettering peak position compared with the data to prestore in database, to judge that sample to be tested is true and false.
2. terahertz detection method according to claim 1, which is characterized in that the Terahertz of the determining sample to be tested is inhaled
Peak position is received, including：
The peak position that absorption spectra is demarcated in a plurality of spectral line of retest is compared；
Whether the absorption peak position for judging to be demarcated in a plurality of spectral line of retest overlaps.
3. terahertz detection method according to claim 2, which is characterized in that a plurality of spectral line for judging retest
The step of whether middle demarcated absorption peak position overlaps includes：
If the absorption peak position of calibration overlaps, using the absorption peak position of calibration as Terahertz Intrinsic Gettering peak position.
4. terahertz detection method according to claim 1, which is characterized in that the true and false step of the judgement sample to be tested
Including：Whether overlapped with data in database by comparing Terahertz Intrinsic Gettering peak position, judge the true and false of sample to be tested.
5. terahertz detection method according to claim 1, which is characterized in that the respective absorption spectrum is by tera-hertz spectra
Instrument device measurement obtains.
6. terahertz detection method according to claim 5, which is characterized in that the terahertz light spectrometer device includes：
Objective table, for carrying sample to be tested；
Laser, for generating pulsed light；
Beam splitting chip, for pulsed light to be divided into pump light and detection light；
Terahertz emission end, is arranged on light path where the pump light, and the pump optical radiation to terahertz emission end generates too
Hertz wave；
Paraboloidal mirror, the sample for receiving the THz wave and collimation focusing to the objective table carry position, and will be saturating
Cross the THz wave collimation focusing of sample；
Terahertz receiving terminal, is arranged on the propagation path through the THz wave of sample of collimated focusing and the detection
Where light in light path, the THz wave and the detection light are received, generates detection signal；Processing module receives the inspection
Signal is surveyed, and Terahertz absorption spectra is finally shown through respective handling.
7. terahertz detection method according to claim 6, which is characterized in that the terahertz light spectrometer device further includes
Sample bin, for providing scheduled gaseous environment for sample detection.
8. terahertz detection method according to claim 7, which is characterized in that the terahertz light spectrometer device measures phase
The step of answering absorption spectra includes：
By sample bin full of nitrogen, when on objective table being zero load, using the signal that terahertz light spectrometer device measures as ginseng
Signal is examined, and then measures reference signal absorption spectra；
Sample to be tested is put into sample bin, sample to be tested absorption spectra is obtained by handling accordingly.
9. terahertz detection method according to claim 1, which is characterized in that tabletting is made in the sample to be tested.
10. terahertz detection method according to claim 9, which is characterized in that the sample to be tested for fructose with it is highly dense
Spend polyethylene in mass ratio 1:4 homogenious charge compression pieces are made.
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| CN201711458641.1A CN108226089A (en) | 2017-12-28 | 2017-12-28 | Terahertz detection method |
| PCT/CN2018/081194 WO2019127960A1 (en) | 2017-12-28 | 2018-03-29 | Terahertz-based test method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109580533A (en) * | 2018-11-30 | 2019-04-05 | 深圳市太赫兹科技创新研究院有限公司 | Cigaratte filter monitoring method and system |
| CN109856082A (en) * | 2018-12-17 | 2019-06-07 | 深圳市太赫兹科技创新研究院有限公司 | The detection method and detection device of quick-fried pearl in cigaratte filter |
| CN110618105A (en) * | 2019-11-01 | 2019-12-27 | 云南电网有限责任公司电力科学研究院 | Transformer oil leakage detection method based on terahertz time-domain spectroscopy technology |
| CN111366556A (en) * | 2020-04-29 | 2020-07-03 | 蓝科微电子(深圳)有限公司 | Terahertz detection method and system for microorganisms and organism inclusion |
| CN111998947A (en) * | 2020-08-31 | 2020-11-27 | 中国电子科技集团公司第四十一研究所 | Terahertz spectrum frequency and linearity calibration module |
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| CN111366556A (en) * | 2020-04-29 | 2020-07-03 | 蓝科微电子(深圳)有限公司 | Terahertz detection method and system for microorganisms and organism inclusion |
| CN111998947A (en) * | 2020-08-31 | 2020-11-27 | 中国电子科技集团公司第四十一研究所 | Terahertz spectrum frequency and linearity calibration module |
| CN111998947B (en) * | 2020-08-31 | 2022-10-21 | 中国电子科技集团公司第四十一研究所 | Terahertz spectrum frequency and linearity calibration module |
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