CN207923718U - Raman spectrum detection device - Google Patents
Raman spectrum detection device Download PDFInfo
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- CN207923718U CN207923718U CN201721858605.XU CN201721858605U CN207923718U CN 207923718 U CN207923718 U CN 207923718U CN 201721858605 U CN201721858605 U CN 201721858605U CN 207923718 U CN207923718 U CN 207923718U
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Abstract
The utility model provides Raman spectrum detection device, including：Spectrometer is configured to the optical signal that collection sample generates under the irradiation of exciting light and generates the spectroscopic data for indicating the optical signal；And data processor, the data processor are configured to：The spectroscopic data from spectrometer is received, and determines the first part for indicating the exciting light ingredient in the optical signal in spectroscopic data and indicates the second part of the Raman scattering ingredient and fluorescent component in the optical signal；It calculates the first parameter of the amplitude of the expression spectral intensity of each in the first part and the second part and indicates the second parameter of the fluctuation of spectral intensity；Compare the first parameter of the first part and the second part, and the second parameter of the first part and the second part；And determine whether the sample is dark matter based on comparative result.
Description
Technical field
The embodiments of the present invention are usually related to Raman spectrum detection field more particularly to Raman spectrum detection device
With the method for the detection safety of monitoring Raman spectrum detection device.
Background technology
Raman spectrum analysis technology is a kind of contactless spectral analysis technique based on Raman scattering effect, its energy
Qualitative and quantitative analysis is carried out to the ingredient of substance.Raman spectrum is a kind of molecular vibration spectrum, it can reflect the fingerprint of molecule
Feature can be used for the detection to substance.Raman spectrum detection is by detecting Raman scattering effect institute of the determinand for exciting light
The Raman spectrum of generation detects and identifies substance.Raman spectra detection process has been widely used for liquid safety check, jewelry inspection
The fields such as survey, explosive detection, illicit drugs inspection, drug detection.
In the application field of Raman spectrum analysis technology, since checking matter is multifarious, the physical characteristic meeting of various substances
Different, they have difference for the heat sensitivity of the laser irradiation for Raman spectrum analysis technology.Due to Raman spectrum
Need to use the laser of high power density to have stronger fuel factor as excitation light source, such as the 785nm laser of near-infrared, in sample
In the case of unknown, detection rashly is likely to result in sample and is damaged by laser ablation, it could even be possible to cause laser-induced combustion or
Some inflammable and explosive chemicals are ignited, the loss of personal property is caused.
Invention content
In order to overcome the problems, such as at least one of of the existing technology above and other and defect, it is proposed that this practicality is new
Type.
A kind of one side according to the present utility model, it is proposed that detection safety of monitoring Raman spectrum detection device
Method includes the following steps：
Emitted exciting light by exciting light sources and is guided the exciting light to sample；
It collects the optical signal that sample generates under the irradiation of exciting light and generates the spectroscopic data for indicating the optical signal；
It determines the first part for indicating the ingredient of the exciting light in the optical signal in the spectroscopic data and indicates the light
The second part of Raman scattering ingredient and fluorescent component in signal；
Calculate the first ginseng of the amplitude of the expression spectral intensity of each in the first part and the second part
Second parameter of the fluctuation of number and expression spectral intensity；
Compare the first parameter of the first part and the second part, and the first part and described second
The second partial parameter；And
Determine whether the sample is dark matter based on comparative result.
In one embodiment, determine that the step of whether sample is dark matter includes based on comparative result：
It is less than the of the first parameter of the second part and the first part in the first parameter of the first part
When two parameters are more than the second parameter of the second part, determine that the sample is dark matter；And
It is less than the mean value of the second part and the second ginseng of the first part in the first parameter of the first part
When number is less than the second parameter of the second part, determine that the sample is transparency liquid.
In one embodiment, first parameter includes the mean value of spectral intensity, and second parameter includes that spectrum is strong
The standard deviation of degree.
In one embodiment, mean value and standard deviation are calculated using following formula：
Wherein, u indicates that mean value, σ indicate standard deviation, XiIndicate that i-th of spectroscopic data, n indicate the first part or institute
State the quantity of the spectroscopic data of second part.
In one embodiment, the first part indicates Raman shift in -10cm-1~10cm-1In the range of light letter
Number spectroscopic data, the second part indicates Raman shift in 350cm-1~2000cm-1In the range of optical signal light
Modal data.
In one embodiment, this method further includes：When it is dark matter to determine the sample, stop exciting light to sample
The irradiation of product.
In one embodiment, emit exciting light in preset duration by exciting light sources with irradiating sample.
In one embodiment, Raman spectrum detection device includes the irradiation for detecting the sample in the exciting light
The optical signal of lower generation collects the sample in the excitation to generate the spectrometer of the Raman spectrum of detected sample
The optical signal that is generated under the irradiation of light and the step of generating the spectroscopic data for indicating the optical signal includes：Using the spectrometer
It collects the optical signal that the sample generates under the irradiation of the exciting light and generates the spectroscopic data.
In one embodiment, the exciting light ingredient in the optical signal from the sample include Rayleigh scattering at
Point.
Another aspect according to the present utility model provides a kind of Raman spectrum detection device, including：
Spectrometer is configured to the optical signal that collection sample generates under the irradiation of exciting light and generates indicate the light letter
Number spectroscopic data；With
Data processor, the data processor are configured to：
The spectroscopic data from spectrometer is received, and determines the exciting light ingredient indicated in spectroscopic data in the optical signal
First part and indicate the second part of the Raman scattering ingredient and fluorescent component in the optical signal；
Calculate the first ginseng of the amplitude of the expression spectral intensity of each in the first part and the second part
Second parameter of the fluctuation of number and expression spectral intensity；
Compare the first parameter of the first part and the second part, and the first part and described second
The second partial parameter；And
Determine whether the sample is dark matter based on comparative result.
In one embodiment, data processor is configured to：
It is less than the of the first parameter of the second part and the first part in the first parameter of the first part
When two parameters are more than the second parameter of the second part, determine that the sample is dark matter；And
It is less than the of the first parameter of the second part and the first part in the first parameter of the first part
When two parameters are less than the second parameter of the second part, determine that the sample is transparency liquid.
In one embodiment, first parameter includes the mean value of spectral intensity, and second parameter includes that spectrum is strong
The standard deviation of degree.
In one embodiment, data processor is configured to calculate mean value and standard deviation using following formula：
Wherein, u indicates that mean value, σ indicate standard deviation, XiIndicate that i-th of spectroscopic data, n indicate the first part or institute
State the quantity of the spectroscopic data of second part.
In one embodiment, data processor is configured to：Will in the spectroscopic data correspond to Raman shift-
10cm-1~10cm-1In the range of the part of optical signal be determined as the first part, and will be corresponding in the spectroscopic data
In Raman shift in 350cm-1~2000cm-1In the range of the part of optical signal be determined as the second part.
In one embodiment, Raman spectrum detection device further includes：Exciting light sources, for emitting the exciting light；
And controller, the controller by with arm at data processor determine the sample be dark matter when control exciting light sources with
Stop irradiation of the exciting light to sample.
In one embodiment, exciting light sources are configured to emit the exciting light irradiating sample in preset duration,
And spectrometer is configured to the optical signal that collection sample generates under the irradiation of exciting light and generates for by data processor
Determine the sample whether be dark matter spectroscopic data.
In one embodiment, the preset duration is in the range of 0.5 millisecond to 5 milliseconds.
In one embodiment, the exciting light ingredient in the optical signal from the sample include Rayleigh scattering at
Point.
By below with reference to attached drawing to being described in detail made by the utility model, other purposes of the utility model and excellent
Point will be evident, and can help to be fully understood by the utility model.
Description of the drawings
Can be more clearly understood the feature and advantage of the utility model by reference to attached drawing, attached drawing be it is schematical and
It should not be construed as carrying out any restrictions to the utility model, in the accompanying drawings：
Fig. 1 is showing for the arrangement for the Raman spectrum detection device for showing an exemplary embodiment according to the present utility model
It is intended to；
Fig. 2 be schematically show an exemplary embodiment according to the present utility model monitoring Raman spectrum detection set
The flow chart of the method for standby detection safety；And
Fig. 3 is showing for the division for the spectroscopic data to acquisition for showing an exemplary embodiment according to the present utility model
It is intended to.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In addition, in the following detailed description, for ease of explaining, elaborating many concrete details to provide to the disclosure
The comprehensive understanding of the embodiment of content.It should be apparent, however, that one or more embodiments are without these specific details
It can also be carried out.In other cases, well known construction and device is diagrammatically embodied to simplify attached drawing.
Fig. 1 schematically shows the Raman spectrum detection device of an exemplary embodiment according to the present utility model
Arrangement.As shown, Raman spectrum detection device 100 includes：Exciting light sources 10, for emitting exciting light 11；Optical devices
Or component 20, for the optical signal from sample 1 by the guiding of exciting light 11 to sample 1 and collection；Spectrometer 30, for receive by
The optical signal that Optical devices or component 20 are collected, to generate the spectrum that sample 1 generates under the irradiation of exciting light, the spectrum packet
The Raman spectrum and fluorescence spectrum of sample are included, also includes the spectrum for the exciting light for being scattered or being reflected by sample being not filtered out
(including mainly Rayleigh scattering light).As an example, the Raman spectrum of the sample generated by spectrometer can be with the drawing of known substance
Graceful spectrum is compared to determine the ingredient of sample.This comparison can be completed for example by computer or processor.Excitation
The typical case of radiant is laser, it will be appreciated by a person skilled in the art that as needed, it can also in Raman detection
Using other kinds of exciting light sources, the utility model is not specifically limited this.
During Raman detection, generate safety problem often caused by during laser irradiation sample sample heat absorption cause
Temperature rise, and then it is likely to result in the ablation to sample, or even phenomena such as igniting, igniting is generated, and dark matter, especially
It is opaque substance or atrament, is occurred in Raman detection due to degrading, burning caused by too strong laser power density
Hinder, the possibility for even explosion of igniting increases.It is appreciated that statement " dark matter " herein is referred in Raman detection mistake
The substance for phenomena such as absorbing heat under the irradiation of exciting light in journey and easy ting produce ablation, burning, explosion can be gray scale 0
In the range of~50, the substance preferably in the range of 0~30.Certainly, specific dark matter can also be by art technology
Personnel determine according to practical application, specific testing conditions, historical experience etc..
In the embodiments of the present invention, as shown in Figure 1, Raman spectrum detection device further includes or is provided at data
Device 50 is managed, data processor 50 receives the spectroscopic data from spectrometer, and handles spectroscopic data, to determine sample 1
Whether it is dark matter (including but not limited to, opaque substance or atrament).To sample whether be dark matter determination
It can be carried out before formally detection sample, exciting light may be used, scheduled duration is carried out (than formal or conventional drawing to sample
The time of graceful detection is short) irradiation, to obtain the spectrum number of optical signal that sample generates under the irradiation of exciting light by spectrometer
According to so as to determine the type of sample based on the spectroscopic data before formally detection sample, such as dark matter or transparency
Matter.In one example, when predefining the type of sample, the irradiation time of each exciting light can be shorter, such as 0.5
To 5 milliseconds, this can prevent exciting light energy excessive and be reacted with certain samples to be tested and acutely cause danger millisecond, avoid long
Laser irradiation damage sample, correspondingly, spectrometer can acquire in the preset duration, such as in 5ms from sample
Optical signal.
When reaching sample to be tested 1 reflection and scattering can occur on sample 1 for the exciting light that exciting light sources 10 are sent out,
Include the diffusing reflection occurred on the surface of sample 1, and the Rayleigh scattering occurred in sample 1 and Raman scattering among these,
Certainly there is the fluorescence that sample is inspired.In practical operation, the light intensity and Raman of the exciting light wave band that spectrometer receives
As soon as the light intensity of scattering wave band is also in magnitude, because the light intensity for the exciting light that exciting light sources are sent out is originally than Raman
Scattering is strong very much, and in the exciting light wave band that spectrometer receives, the light intensity of back rayleigh scattering and the light sent out than diffusing reflection
It is powerful very much.
In some embodiments of the utility model, data processor 50 can be based on to coming from sample in spectroscopic data
Exciting light ingredient (main include Rayleigh scattering ingredient) and Raman scattering ingredient processing and analysis, determine sample 1 whether be
Dark matter (such as opaque substance or atrament), dark matter is stronger to the absorption of light, thus occur Rayleigh scattering compared with
It is weak, and Rayleigh Scattering Spectra has different wave-length coverages from raman scattering spectrum.Fig. 3 is to show according to the present utility model one
The schematic diagram of the division of the spectroscopic data that spectrometer is obtained of a exemplary embodiment, the direction of the transverse direction of Fig. 3 from left to right
For the direction that Raman shift is changed from small to big, the abscissa in spectrogram can correspond to, and the ordinate in spectrogram can be with
Indicate spectrum or the intensity of spectral line.Wherein, Raman shift=(1/ λ0-1/λ)*107, wherein λ0For the wavelength of exciting light, λ is Raman
The unit of the wavelength of light, the unit nm of wavelength, Raman shift is cm-1.As shown in figure 3, data processor 50 can determine or
The exciting light wave band in the optical signal that sample 1 generates under the irradiation of exciting light 11 is indicated in the obtained spectroscopic data of calibration
The first part P1 of (main include Rayleigh scattering ingredient) and indicate Raman scattering ingredient in the optical signal and fluorescence at
Point second part P2, by indicating the first part P1 of exciting light wave band and indicating Raman scattering ingredient and fluorescent component
Second part P2 is analyzed, is compared, and is determined the intensity for the Rayleigh scattering that sample 1 occurs under the irradiation of exciting light, is sentenced with this
Whether disconnected sample is dark matter.
In one example, data processor 50 is configured to correspond to Raman shift in the spectroscopic data that will be obtained
In -10cm-1~10cm-1In the range of the part of optical signal be determined as first part P1, to indicate exciting light wave band, and will
Correspond to Raman shift in the spectroscopic data in 350cm-1~2000cm-1In the range of the part of optical signal be determined as second
Part P2, to indicate Raman scattering ingredient and fluorescent component.For theoretically, excitation wavelength is exactly that Raman shift is equal to 0
Wavelength, but since there is no proper monochromatic sources, even laser is also that there are one very narrow wave bands, and draw
λ in graceful displacement formula0A determining numerical value can only be selected, therefore Raman shift is in -10cm-1~10cm-1In the range of
The part of optical signal belongs to exciting light wave band.
In one example, data processor 50 can calculate the respective expression light of first part P1 and second part P2
Second ginseng of fluctuation or the variation of the first parameter (e.g., the mean value of spectral intensity) and expression spectral intensity of the amplitude of spectral intensity
Number (e.g., standard deviation, variance etc.), compare the first parameter of first part P1 and second part P2, and compare first part P1 and
The second parameter of second part P2, and determine whether sample is dark matter based on comparative result.
Illustratively, the exciting light ingredient in the optical signal that expression sample 1 generates under the irradiation of exciting light 11 is (main
Including Rayleigh scattering ingredient) the first parameter of first part P1 be less than and indicate second of Raman scattering ingredient and fluorescent component
When dividing the first parameter of P2, show that the Rayleigh scattering occurred at the illuminated position of sample is weaker, sample to be tested may be dark object
Matter or transparency liquid, because dark matter is more to the absorption of exciting light, transparency liquid then directly allows exciting light to penetrate；Further
Ground shows the spectroscopic data of second part P2 if the second parameter of first part P1 is more than the second parameter of second part P2
Strength fluctuation it is smaller, in corresponding optical signal be not present apparent spectrum peak, then can be determined that sample be dark matter
(illustratively, the inventors of the present application found that measured known to sample statistics indicate that, in the shorter of exciting light
Under the irradiation of irradiation time, the originally overwhelming majority that dark matter is inspired is that spectral intensity is gentle or that fluctuation is little is glimmering
Light, but transparency liquid has been able to soon launch stronger Raman diffused light at this time, will produce apparent spectrum
Peak), you can stop using Raman setup to measure this sample, conversely, may be then transparency liquid.
In one exemplary embodiment, data processor 50 is configured to calculate mean value and standard using following formula
Difference：
Wherein, u indicates that mean value, σ indicate standard deviation, XiIndicate i-th spectroscopic data (intensity of i-th sampled point, such as
The intensity of spectral line), n indicates quantity (the sampled point number, such as spectral line of the spectroscopic data of the first part or the second part
Number).
Illustratively, the mean value for indicating first part P1 and second part P2 respectively with u1, u2 is indicated respectively with σ 1, σ 2
Two steps can be used to judge in the standard deviation of first part P1 and second part P2.The first step judges that first part P1's is equal
Size between value and the mean value of second part P2.As u1 ＜ u2, such as in 0cm-1Nearby or in -10cm-1~10cm-1Range
Interior spectroscopic data is weaker, shows that weaker Rayleigh scattering occurs for sample, then sample may be dark matter or transparency liquid, conversely,
It is then other substances.
After the first step judges that sample to be tested is dark matter or transparency liquid, second step is carried out, judges first
Divide the size between the standard deviation and the standard deviation of second part P2 of P1, be not limited to standard deviation, can also be the characterizations such as variance ginseng
The amount of number fluctuation.As 1 ＞ σ 2 of σ, it is small to show that the spectroscopic data of second part P2 is fluctuated than the spectroscopic data of first part P1, such as
Spectroscopic data is in 350cm-1~2000cm-1In the range of compare 0cm-1Nearby or in -10cm-1~10cm-1Fluctuation is small in range, can
Using judgement sample as dark matter, conversely, then judging sample for transparency liquid.
When it is dark matter to determine sample, degrades, burns, ignited very since dark matter generates under the irradiation of laser
Possibility to explosion is big, it is therefore desirable to take appropriate measures to ensure to detect safety.Illustratively, Raman spectrum detects
Equipment 100 can also include controller 60, when data processor 50 determines that sample 1 is dark matter to exciting light sources
10 send control signal, to reduce the power of exciting light sources, or shutdown exciting light sources to stop photograph of the exciting light to sample 1
It penetrates, stops detection of the Raman spectrum detection device to the sample.
In some embodiments, as shown in Figure 1, light path 21 can be established or be formed to Optical devices or component 20, for receiving
Collect the optical signal from sample 1, including Raman light ingredient, fluorescent component and exciting light ingredient.
In one example, illustrative Raman spectrum detection device 100 as shown in Figure 1 can be provided in light path 21
Spectroscope 25, the exciting light 11 for being used to come from exciting light sources 10 reflect to sample 1 and make the optical signal from sample 1
At least part be transmitted through the spectroscope 25 with directive spectrometer 30.It is also provided with convergent lens in light path 21
24, it is used to exciting light 11 converging to sample 1 and collects the optical signal from sample 1.
The embodiments of the present invention additionally provide a kind of safety of monitoring Raman spectrum detection device detection sample
Method.Referring to Fig. 1-3, this method may include following step：
S1：Raman spectrum detection device is opened, to emit exciting light in preset duration by exciting light sources 10 and should
Exciting light 11 is guided to sample 1；The preset duration is shorter than the time of formal or conventional Raman detection, for example, 0.5 millisecond
To 5 milliseconds, this can prevent exciting light energy excessive and be reacted with certain samples to be tested and acutely cause danger, avoid for a long time
Laser irradiation damage sample；
S2：It collects the optical signal that sample 1 generates under the irradiation of exciting light 11 and generates the spectrum for indicating the optical signal
Data；In one example, can be in the preset duration, such as in 5ms, acquire the optical signal from sample；
S3：Determine indicated in the spectroscopic data in the optical signal exciting light ingredient (mainly include Rayleigh scattering at
Point) first part P1 and indicate the second part P2 of the Raman scattering ingredient and fluorescent component in the optical signal, and calculate
(e.g., spectrum is strong for first parameter of the amplitude of the expression spectral intensity of each in the first part and the second part
The mean value of degree) and indicate spectral intensity fluctuation or variation the second parameter (e.g., standard deviation, variance etc.)；And
S4：Compare the first parameter of the first part and the second part, and the first part and described
Second parameter of second part determines whether the sample is dark matter based on comparative result.
In some instances, as previously mentioned, this method can also include step：
S5：When it is dark matter to determine the sample not, irradiating sample is continued by exciting light, and detected by Raman spectrum
Equipment continues to acquire the Raman spectrum of sample, to be detected to sample；And
S6：When it is dark matter to determine sample, stop detection.
In some embodiments, as described above, step S4 may include：
It is less than the of the first parameter of the second part and the first part in the first parameter of the first part
When two parameters are more than the second parameter of the second part, determine that the sample is dark matter；And
It is less than the of the first parameter of the second part and the first part in the first parameter of the first part
When two parameters are less than the second parameter of the second part, determine that the sample is transparency liquid.
Illustratively, mean value and standard deviation that following formula calculate spectroscopic data may be used：
Wherein, u indicates that mean value, σ indicate standard deviation, XiIndicate that (spectrum of i-th sampled point is strong for i-th of spectroscopic data
Degree, such as the intensity of spectral line), n indicate the spectroscopic data of the first part or the second part quantity (sampled point number, such as
Spectral line number).
In one embodiment, Raman shift can will be corresponded in the spectroscopic data obtained in -10cm-1~10cm-1In the range of the part of optical signal be determined as first part P1, to indicate that the exciting light ingredient from sample (includes mainly auspicious
Profit scattering ingredient), Raman shift will be corresponded in the spectroscopic data in 350cm-1~2000cm-1In the range of optical signal
Part is determined as second part P2, to indicate Raman scattering ingredient and the fluorescent component from sample.
In the embodiments of the present invention, shone in exciting light by the sample to will be detected by Raman spectrum detection device
The optical signal for penetrating lower generation is acquired and obtains corresponding spectroscopic data, is handled the spectroscopic data, is analyzed, to spectrum
Intensity and its fluctuation are compared, for example, calculate the mean value of spectroscopic data, standard deviation, both relatively etc., to be based on coming from sample
Optical signal in Raman scattering ingredient, fluorescent component and exciting light ingredient (including mainly Rayleigh scattering ingredient), realize pair
The primitive decision of the material type of sample, avoid due to the degradation of sample caused by too strong laser power density, burn,
It ignites and even explodes, it is ensured that the safety of secure sample and user during Raman spectrometer use.
In above description, describe to illustrate with reference to the action and symbolic indication (for example, at form of flow chart) operated
Property embodiment, the operation may be performed that program module or function course, described program module or function course include journey
Sequence, programming, object, component, data structure etc., and execute particular task or execute specific abstract data type and can be with
Using existing hardware to be performed.These existing hardwares may include one or more central processing units (CPU), digital signal
Processor (DSP), application-specific integrated circuit, field programmable gate array (FPGA) etc..
Herein, unless otherwise specifically providing, or as apparent to the discussion, such as " handled " or
" calculating " or the terms such as " operation " or " determination " refer to operation or step is represented as in the register and memory of computer system
Physical electronic amount data and convert thereof into and be similarly represented as computer system memory or register or others
The computer system of other data of physical quantity in this information storage, transmission or display device or similar electronics calculate dress
The effect set and process.
It is illustrative to describe above by reference to operation or the action of step and symbolic indication (for example, at form of flow chart)
Embodiment, the operation or step may be performed that program module or function course, described program module or function course packet
Include program, programming, object, component, data structure etc., and execute particular task or execute specific abstract data type and
It can be using existing hardware to be performed.
Those skilled in the art of the present technique are appreciated that the disclosure includes being related to for executing method described herein, step
Suddenly, one or more devices in the function of operation or module.These devices can specially be designed for required purpose and
Manufacture, or can also include the known devices in all-purpose computer.These devices have the computer program being stored in it,
These computer programs are selectively activated or are reconstructed.Such computer program can be stored in device (for example, calculating
Machine) in readable medium or it is stored in suitable for storage e-command and is coupled to respectively in any kind of medium of bus, institute
State computer-readable medium include but not limited to any kind of disk (including floppy disk, hard disk, CD, CD-ROM and magneto-optic disk),
ROM (Read-Only Memory, read-only memory), RAM (Random Access Memory), EPROM (Erasable
Programmable Read-Only Memory)、EEPROM (Electrically Erasable Programmable
Read-Only Memory), flash memory, magnetic card or light card.It is, readable medium include by device (for example, calculate
Machine) any medium of storage or transmission information in the form of it can read.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can be changed to these embodiments in the case where not departing from the principles of the present invention and spirit, this practicality
Novel range is defined by the appended claims and the equivalents thereof.
Claims (9)
1. a kind of Raman spectrum detection device, which is characterized in that the Raman spectrum detection device includes：
Spectrometer is configured to the optical signal that collection sample generates under the irradiation of exciting light and generates indicate the optical signal
Spectroscopic data；With
Data processor, the data processor are configured to：
The spectroscopic data from spectrometer is received, and determines and indicates the of exciting light ingredient in the optical signal in spectroscopic data
A part and the second part for indicating the Raman scattering ingredient and fluorescent component in the optical signal；
Calculate the amplitude of the expression spectral intensity of each in the first part and the second part the first parameter and
Indicate the second parameter of the fluctuation of spectral intensity；
Compare the first parameter of the first part and the second part, and the first part and the second part
The second parameter；And
Determine whether the sample is dark matter based on comparative result.
2. Raman spectrum detection device according to claim 1, which is characterized in that data processor is configured to：
It is less than the first parameter of the second part and the second ginseng of the first part in the first parameter of the first part
When number is more than the second parameter of the second part, determine that the sample is dark matter；And
It is less than the first parameter of the second part and the second ginseng of the first part in the first parameter of the first part
When number is less than the second parameter of the second part, determine that the sample is transparency liquid.
3. Raman spectrum detection device according to claim 1 or 2, which is characterized in that first parameter includes spectrum
The mean value of intensity, second parameter include the standard deviation of spectral intensity.
4. Raman spectrum detection device according to claim 3, which is characterized in that data processor is configured to use down
It states formula and calculates mean value and standard deviation：
Wherein, u indicates that mean value, σ indicate standard deviation, XiIndicate that i-th of spectroscopic data, n indicate the first part or described second
The quantity of partial spectroscopic data.
5. according to the Raman spectrum detection device described in any one of claim 1,2 and 4, which is characterized in that data processor
It is configured to：
Raman shift will be corresponded in the spectroscopic data in -10cm-1~10cm-1In the range of the part of optical signal be determined as
The first part, and Raman shift will be corresponded in the spectroscopic data in 350cm-1~2000cm-1In the range of light letter
Number part be determined as the second part.
6. according to the Raman spectrum detection device described in any one of claim 1,2 and 4, which is characterized in that the Raman spectrum
Detection device further includes：
Exciting light sources, for emitting the exciting light；With
Controller, the controller are configured to control exciting light sources when data processor determines that the sample is dark matter
To stop irradiation of the exciting light to sample.
7. Raman spectrum detection device according to claim 6, which is characterized in that exciting light sources are configured to default
The transmitting exciting light irradiating sample in duration, and spectrometer is configured to collect what sample generated under the irradiation of exciting light
Optical signal and generate for by data processor determine the sample whether be dark matter spectroscopic data.
8. Raman spectrum detection device according to claim 7, which is characterized in that
The preset duration is in the range of 0.5 millisecond to 5 milliseconds.
9. according to the Raman spectrum detection device described in any one of claim 1,2,4,7 and 8, which is characterized in that come from institute
It includes Rayleigh scattering ingredient to state the exciting light ingredient in the optical signal of sample.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812264A (en) * | 2019-03-19 | 2019-05-28 | 辽宁石油化工大学 | It is a kind of for the survey mud logging equipment of underground real-time detection and its application |
| WO2019128801A1 (en) * | 2017-12-26 | 2019-07-04 | 同方威视技术股份有限公司 | Raman spectroscopic detection device and method for monitoring detection security thereof |
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| WO2019128801A1 (en) * | 2017-12-26 | 2019-07-04 | 同方威视技术股份有限公司 | Raman spectroscopic detection device and method for monitoring detection security thereof |
| CN109812264A (en) * | 2019-03-19 | 2019-05-28 | 辽宁石油化工大学 | It is a kind of for the survey mud logging equipment of underground real-time detection and its application |
| CN112033541A (en) * | 2019-05-01 | 2020-12-04 | 凯塞光学系统股份有限公司 | Standard reference material interface for Raman probe |
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