CN207779902U - Raman spectrum detection device based on reflected optical power - Google Patents
Raman spectrum detection device based on reflected optical power Download PDFInfo
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Abstract
This application discloses a kind of Raman spectrum detection device based on reflected optical power.Detection device includes：Laser is configured to object emission laser to be detected；Raman spectrometer is configured to receive the Raman optical signal from the object；Optical sensor is disposed for receiving the light for being reflected and being scattered by the object because stimulated light is irradiated, and determines the power of the light received by it；And controller, it is configured to the operation of the power control detection device determined based on optical sensor.
Description
Technical field
This application involves a kind of detection devices, and a kind of particularly Raman spectrum detection based on reflected optical power
Equipment.
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.
In recent years, Raman spectrum analysis technology is widely used in the fields such as dangerous material inspection and Object Classification.
In Object Classification field, due to the color of various substances, different, people are usually unable to judge accurately object qualitative attribution, and
Raman spectrum is determined by the molecular entergy level structure of checking matter, thus Raman spectrum can be used as " fingerprint " information of substance, is used for object
Matter identifies.Therefore Raman spectrum analysis technology is widely used in fields such as customs, public safety, food and medicine, environment.
Since Raman spectrum needs to use the laser of high power density as the 785nm laser of excitation light source, such as near-infrared
There is stronger fuel factor, in the case where the ingredient of examined object is unknown, detection rashly is likely to result in examined object
It is damaged by laser ablation, if examined object is inflammable and explosive chemicals, may result in the shapes such as generation burning, explosion
Condition causes the loss of personal property.
Utility model content
The purpose of the application is to solve or alleviate one or more technical problems in the prior art at least partly.
According to the one side of the application, it is proposed that a kind of detection device.
According to an exemplary embodiment, detection device may include：Laser is configured to send out to object to be detected
Penetrate laser；Raman spectrometer is configured to receive the Raman optical signal from the object；Optical sensor is disposed for
The laser for being reflected and being scattered by the object because stimulated light is irradiated is received, and determines the power of the laser received by it；With
Controller is configured to the operation of the power control detection device determined based on optical sensor.
According to another exemplary embodiment, the controller can be further configured for：The work(that optical sensor is determined
Rate is made comparisons with a threshold power, and if the power is greater than or equal to the threshold power, the controller instruction
Laser transmitting laser is detected；If the power is less than the threshold power, the controller indicates detection device
Termination detection.
According to a further exemplary embodiment, the detection device may also include warning device, and the controller by into
One step is configured to while indicating detection device termination detection or indicates that the warning device sends alarm signal later.
According to a further exemplary embodiment, the detection device may also include fixing device, be configured to the object
Surface to be detected be arranged to it is vertical with the direction for the laser being irradiated on the surface.
According to a further exemplary embodiment, the fixing device can have：Clear aperature, laser shine across the clear aperature
It is mapped to the surface to be detected of the object；With interior positioning surface, it is arranged to the direction with the laser across the clear aperature
Vertically, and the surface to be detected of the object is configured to be close to the interior positioning surface.
According to a further exemplary embodiment, the detection device may also include：First spectroscope, setting is from the object
In body to the Raman light light path of the Raman spectrometer and the laser aiming for emitting the laser is configured to the object
Body simultaneously makes the Raman light from the object be transmitted to the Raman spectrometer, and described first across first spectroscope
Spectroscope is further configured to the laser with predetermined wavelength for being sent out by laser with certain transmitance.
According to a further exemplary embodiment, the detection device may also include：Second spectroscope, setting is from the object
In body to the Raman light light path of the Raman spectrometer and it is configured to reflect the reflection laser from the object and scatters sharp
Light simultaneously makes the Raman light from the object be transmitted to the Raman spectrometer, and described second across second spectroscope
Spectroscope be further configured to the laser with predetermined wavelength that will be sent out by laser transmitted through first spectroscopical portion
Divide and reflexes to the optical sensor.
According to a further exemplary embodiment, the detection device may also include at least one of following optical component：The
It one filter plate, first spectroscope being arranged in the Raman light light path and second spectroscopical downstream and is configured to
For filtering out the Reyleith scanttering light in optical signal；With the second filter plate, it is arranged between the laser and first spectroscope
And it is configured to send out in the laser laser-defined in desired wavelength period.
According to a further exemplary embodiment, the detection device may also include at least one of following optical component：The
One convergent lens or lens group are arranged between the second spectroscope and the object；Second convergent lens or lens group, set
It sets between imaging device and the second spectroscope；With third convergent lens or lens group, it is arranged in Raman spectrometer and first
Between spectroscope.
According to a further exemplary embodiment, first spectroscope for 45 degree of angle incidence laser it is described certain saturating
Cross the ranging from 5%-30% of rate.
Description of the drawings
The preferred embodiment of the application will be described in conjunction with attached drawing by way of example now, wherein：
Fig. 1 is the schematical block diagram according to the detection device of one embodiment of the application；
Fig. 2 is the schematical flow chart according to the detection method of another embodiment of the application；With
Fig. 3 is the schematical flow chart according to the detection method of the another embodiment of the application.
Specific implementation mode
Describe the exemplary embodiment of the application in detail below in conjunction with attached drawing.Similar reference numeral in attached drawing refers to
For similar component or feature.The application can also other different forms realize that therefore embodiment set forth herein should not be by
It is construed to the limitation of the application.The purpose for providing these embodiments is that those skilled in the art is enable fully and completely to manage
Solve the design of the application.
A basic conception according to the present utility model, provides a kind of detection device, including：Laser is configured to
The object emission laser to be detected to one；Raman spectrometer is configured to receive the Raman optical signal from the object；Light passes
Sensor is disposed for receiving the light reflected by object by laser irradiation, and determines the power of the light received by it；With
Controller is configured to the operation of detection device described in the power control determined based on optical sensor.
Fig. 1 shows the schematic diagram of the detection device of one embodiment according to the application.As shown in Figure 1, in the implementation
In example, detection device 100 includes：Laser 110 is configured to emit laser 111 to an object 120 to be detected；Raman light
Spectrometer 130 is configured to receive the Raman optical signal 112 from the object 120；Optical sensor 140 is disposed for obtaining
It takes by the light of object 120 reflection and reversed Rayleigh scattering due to laser irradiation, and determines the power of the light received by it；And control
Device 150 processed is configured to the operation of detection device 100 described in the power control determined based on optical sensor 140.
As will be understood by the skilled person in the art, white or light-colored object is high for the reflectivity of light, and black or depth
Color object is high for the absorptivity of light.Therefore, it if using laser detection black or dark object, may be inhaled due to object
It has received a large amount of laser energy and has rapidly heated up, and then may result in object by Partial ablation.On the contrary, white or light-colored object
Body is higher for the reflectivity of laser, and therefore, the basic conception of the utility model is to dissipate by detection object reflection and Rayleigh
The power for the laser penetrated determines the depth of detected object color, and controls detection device after the depth for determining object color
Detection operation.
In the present invention, optical sensor 140 may include any suitable photo-electric conversion element, such as and be not limited to：
Photodiode, phototriode, photo resistance etc..In an exemplary embodiment of the utility model, the light sensing
Device 140 includes photodiode.Photodiode is a kind of photosensitive photoelectric cell, and internal reverse current is with reception
To light power increase and increase, therefore can determine the light received by it based on the concrete numerical value of its reverse current
The concrete numerical value of power.It similarly, can also be according to the resistance value of photo resistance if optical sensor 140 includes photo resistance
The anti-power for pushing away the light received by it of variation.
Based on the technical solution of the utility model, it will be understood by those skilled in the art that if detected object 120 is
White or light-colored object, then its reflection and scattering laser with regard to more, optical sensor 140 receive from the anti-of object 120
The power for the laser penetrated also bigger.Therefore, a threshold power I can be presetth, if it is determined that optical sensor 140 receives
Light power I be greater than or equal to threshold power Ith, then can determine that detected object is light color or white object, otherwise may be used
To determine that detected object is dark or black object.
Calculating for the power I for the light that optical sensor 140 receives can be by being stored in advance in the computer, long-range of execute-in-place
Software in the storage device in computer or controller 150 or algorithm or various special equipments or circuit in control centre is real
It is existing.For example, using photodiode in the case of, can by being measured to the reverse current in photodiode, into
And determine its power received.What these technology contents will be appreciated that those skilled in the art, herein
It repeats no more.In addition, threshold power IthConcrete numerical value can be specific according to the various technical parameters of detection device, detection environment etc.
Situation is set.
In the above-described embodiments, controller 150 can be further configured to the power I and threshold that determine optical sensor 140
It is worth power IthIt makes comparisons：If the power I of the light received is greater than or equal to threshold power Ith(that is, I >=Ith), then it can determine that
Currently detected object 120 is white or light-colored object, can carry out laser detection, and indication laser 110 emit laser into
Row detection；If the power I of the light received is less than threshold power Ith(that is, I ＜ Ith), then judge the object being currently detected
120 be black or dark object, and higher to the absorption of laser energy, there are the risks of ablation, therefore may indicate that detection device end
Only detect.
It should be noted that the judgement of the shade about detected object 120, it can be in the advance of formal detection
Row is prejudged, and can also be judged in formal detection process, is described as follows.
It in one embodiment, can be by swashing after detection program starts, and before formal laser testing process starts
Light device 110 first sends out one section of laser pulse for carrying out pre-detection to object 120 to the object 120 for being placed on position to be detected
(for example, 5 milliseconds laser pulse of duration), optical sensor 140 receive from object 120 because the pulse laser irradiation
And the reflected light generated and the power I for determining the light that optical sensor 40 receives, then judge power I whether greater than, equal to
Or it is less than threshold power Ith.Based on power I and threshold power IthRelationship, controller 150 judges that current examined object is
It is no to be adapted for formal laser detection.For example, controller 150 can be configured to：When power I is greater than or equal to threshold power Ith
When, determine object is adapted for formal laser detection；And when power I is less than threshold power IthWhen, determine object not
It is adapted for formal laser detection.If controller 150 judges that current examined object is adapted for formal laser detection,
Then controller 150 may indicate that laser 110 starts formally to send out continuous laser beam to be detected object 120.If control
Device 150 processed judges that current examined object is unsuitable for laser detection, then 150 can directly termination detection program, laser 110 be not necessarily to
Transmitting continuous laser beam carries out formal detection.
In another embodiment, after detection program starts, laser 110 is directly to the object for being placed on position to be detected
120, which send out continuous laser beam, is detected, at the same time, by optical sensor 140 receive from object 120 because laser irradiation
And the reflected light and scattering light that generate and determine the power I of light received, and judge power I whether greater than, equal to or it is small
In threshold power Ith.Based on power I and threshold power IthRelationship, controller 150 judges whether current examined object fits
In laser detection (standard of judgement can be similar with previous embodiment).If controller 150 judges that current examined object is suitable for
Laser detection, it indicates that laser 110 continues transmitting laser beam and is detected to object 120, until detection terminates.If control
Device 150 processed judges that current examined object is unsuitable for laser detection, then 150 indication laser 110 of controller stops transmitting laser,
And termination detection program.
In addition, according to another embodiment, detection device 100 may also include a warning device 160.When controller 150 judges
It, can be while termination detection program or indicating alarm device 160 sends out an alarm signal later when object is unsuitable for laser detection
Number, it is not suitable for being detected or should not continues due to color relatively depth with the current object to be detected of staff near prompting
Operation is detected and/or detects to have terminated.Alarm signal can be at least one in specific voice signal, picture signal etc.
Kind.
It should be noted that same object (or the identical sample of shade degree) is different because of disposing way,
Detected surface, at different angles, may result in from the direction of detection laser beam and come from object by what optical sensor received
The reflection of body and the power for scattering light are different.Similarly, the different object of shade degree, because of its shape and disposing way
Difference, may result in by optical sensor receive to reflection from object and scatter light power it is identical.It is above-mentioned this
In the case of two kinds, the power distortion that optical sensor receives can cause controller to generate erroneous judgement to the depth degree of object color,
So as to cause the dangerous result of generation.
In order to be avoided as much as or eliminate the factors such as the shape because of different samples, disposing way to reflecting and scattering light
The influence of power, in a further embodiment, detection device 100 may also include the fixing device for fixed object 120
170。
Fixing device 170 for example can be box or clamp-type fixing device or other fixing devices or structure appropriate,
It is vertical with the direction of laser beam for being arranged on the surface to be detected of object 120 to be detected.For example, shown in Fig. 1
In exemplary embodiment, fixing device 170 is box fixing device, has the interior positioning table vertical with the direction of laser beam
Face, the surface to be detected of object 120 is close to the interior of fixing device 170 and is set to surface, to the surface to be detected of object 120
It is configured to vertical with the direction of laser beam.The rear portion of object 120 can fixing device 170 other fixed components appropriate
(not shown) further fixes.A light hole 171 can be offered in the antetheca of fixing device 170, laser beam can pass through
The light hole 171 is irradiated to the surface to be detected of the fixed object 120 inside fixing device 170.The shape of the light hole 171
Can be rectangular slot, rectangle square hole or circular hole etc..
In the other embodiment of the application, detection device 100 may also include one or more Optical devices, for configuring
Or light path (hereinafter referred to as " laser optical path ") between aiming laser 110 and object to be detected 120, object to be detected 120 with
Light path (hereinafter referred to as " Raman light light path ") and/or optical sensor 140 between Raman spectrometer 130 and object to be detected 120
Between light path (hereinafter referred to as " sensing light path ").
As shown in Figure 1, Optical devices may include the first spectroscope 161, configure in Raman light light path, and be configured
At the laser aiming for emitting laser 110 to object to be detected 120 and the light letter from object to be detected 120 is not interfered with
Number propagation of (Raman diffused light) to Raman spectrometer 130.
As an example, the first spectroscope 161, which can be long wave, leads to dichroscope.Long wave leads to dichroscope and allows generally for wavelength
Light more than predetermined wavelength passes through, and reflection wavelength is less than the light of predetermined wavelength.Swash using laser irradiation object to be detected
In the case of sending out Raman scattering effect, the frequency of most Raman diffused lights reduces, and wavelength is elongated.Therefore, it properly configures
The long wave leads to the laser with predetermined wavelength that dichroscope can send out laser 110 and is reflected towards object to be detected 120,
And allow to lead to dichroscope towards Raman light by the long wave from the elongated Raman diffused light of the wavelength of object to be detected 120
Spectrometer 130 is propagated.Long wave lead to dichroscope specific configuration can according to laser 110 emit laser wavelength carry out configuration or
Setting.
Although in the examples described above, the first spectroscope 22 is illustrated so that long wave leads to dichroscope as an example, this
First spectroscope 161 of application is not limited in long wave and leads to dichroscope, and other wavelength selections known in the art can be used
Light splitting part realizes above-mentioned function.
By the way that the first spectroscope 161 is arranged, laser optical path can be made to merge at least partly with Raman light light path, to have
Conducive to the overall dimensions of reduction detection device.
In addition, as shown in Figure 1, Optical devices may also include the second spectroscope 162, it is also deployed on Raman light light path
In, and be further configured to reflect the part reflected light from object 120, it is carried out so as to the power of 140 light of optical sensor
Detection.
It should be noted that the second spectroscope 162 can also be not arranged in Raman light light path, but individually with it
Light path.But being disposed in hand-pulled noodles light path can be such that sensing light path merges at least partly with Raman light light path, to have
Conducive to the overall dimensions of reduction detection device.It needs exist for further illustrating, if being arranged the second spectroscope 162 such as
In Raman light light path shown in FIG. 1, then the first spectroscope 161 needs at least to be transmissive to be reflected by the object and the laser that scatters
A part.In practice, the first commercial spectroscope 161 can be made very high for the reflectivity of the laser of 45 degree of angle incidence,
For example, 94%, even if but in the case of 94% so high reflectivity, remaining on 6% laser can penetrate, and first
Spectroscope 161 can be lower for the reflectivity of the laser of other angles incidence, then because laser intensity is very big, anti-by object
After being reflected again by the second spectroscope 162 after the first spectroscope of laser light 161 penetrated and scattered, intensity is not still small,
It can significantly be detected by detector.
In the exemplary embodiment, in order to ensure the utilization rate of the laser from laser 110, the first spectroscope 161
Include that the laser high-reflecting film with high reflectivity with predetermined wavelength is used for most of laser reflection to object 120,
In addition, first spectroscope 161 for the laser with predetermined wavelength also with scheduled transmitance.It needs to illustrate
It is that the concrete numerical value of reflectivity (or transmitance) can be set according to actual conditions, such as be swashed based on what laser 110 emitted
The lightsensitivity etc. of power, optical sensor 140.Such as, it is generally the case that the first spectroscope can be configured by modes such as plated films
161, make its for the optical maser wavelength of 45 degree of angle incidence reflectivity between 70% to 95% (i.e. transmitance be 5%-30%).
Second spectroscope 162 may include for optical maser wavelength film with high reflectivity or construction so that penetrate first
The fraction of laser light light beam of spectroscope 161 can fully or even fully be reflected towards optical sensor 140.In order to make light sensing
Device 140 is more sensitive and accurate for the detection of light intensity, and in the exemplary embodiment, the second spectroscope 162 enters 45 degree of angles
The laser for the predetermined wavelength penetrated has at least 94% reflectivity, it is preferable that reflectivity at least 99.5%, fully to utilize institute
State the part transmitted through the first spectroscope 161 of the laser with wavelength.
As an example, second spectroscope 162, which can also be long wave, leads to dichroscope, laser 110 is sent out
The laser with predetermined wavelength with high reflectance, but the Raman for the wavelength bigger that laser generates after Raman scattering is allowed to dissipate
Light is penetrated to pass through.The specific threshold value that long wave leads to dichroscope can be according to actual conditions (for example, laser that laser 110 is sent out
The parameters such as wavelength) it is set or is configured.In embodiments herein, the second spectroscope 162 is not limited to long wave and leads to dichroscope,
The above-mentioned function of the second spectroscope 162 can also be realized using other light splitting parts known in the art.
By the way that the second spectroscope 162 is arranged, sensing light path can be made to merge at least partly with Raman light light path, to have
Conducive to the overall dimensions of reduction detection device.
In a further embodiment, Optical devices can also include except the first spectroscope 161 and the second spectroscope 162 it
Other outer one or more optical components.
For example, as shown in Figure 1, detection device 100, which may also include, is arranged in Raman light light path 162 downstream of the second spectroscope
The first filter plate 163, the Reyleith scanttering light for being disposed for filtering out in the optical signal after the first spectroscope 161 or other
Invalid stray light, to reduce their interference for Raman spectrometer.In the exemplary embodiment, first filter plate
163 may include long wave pass filter piece or notch filter piece.
In another embodiment, as shown in Figure 1, detection device 100 may also include first point be arranged in laser optical path
Second filter plate 164 of 161 upstream of light microscopic (that is, between laser 110 and first spectroscope 161), is configured to laser
110 send out it is laser-defined in desired wavelength period.In the exemplary embodiment, second filter plate 164 may include
Narrow band filter slice.
In another embodiment, as shown in Figure 1, detection device 100 may also include setting the first spectroscope 161 with it is to be checked
The first convergent lens (or lens group) 166, setting between survey object 120 is between optical sensor 140 and the second spectroscope 162
The second convergent lens (or lens group) 167, and/or the third that is arranged between Raman spectrometer 130 and the second spectroscope 162
Convergent lens (or lens group) 168.First convergent lens (or lens group) 166 can be used for collecting reflection and scattering from object
Light is conducive to the accuracy and the sensitivity that improve the detection of optical sensor 140 and Raman spectrometer 130.Second convergent lens (or
Lens group) 167 it can be used for assembling light, the power for the light that optical sensor 140 receives is improved, to favorably improve optical sensor
140 detection sensitivity.Third convergent lens (or lens group) 168 can be used for assembling light so that more Raman diffused lights
Convergence enters Raman spectrometer, to be conducive to improve detection accuracy and the sensitivity of detection device 100.
It should be noted that each in previously described first to fourth convergent lens or lens group may include figure
Single convex lens shown in 1 can also include the lens group with light-focusing function being made of multiple lens.
According to the another aspect of the application, a kind of method being detected using Raman spectrometer is additionally provided.
Fig. 2 shows the schematical flow charts according to the detection method of one embodiment of the application.As shown in Fig. 2,
After detection program starts (S0), the detection method may include following steps：
Step S10：Emit laser pulse to object 120 to be detected；
Step S20：It receives the reflected light generated by the laser pulse and scattering light from object 120 and determines and be somebody's turn to do
The power I of reflected light and scattering light；
Step S30：By determining power I and threshold power IthIt makes comparisons；
Step S41：If power I is greater than or equal to threshold power Ith, then formal detection is executed；With
Step S42：If power I is less than threshold power Ith, then termination detection.
After detection is completed or after termination detection, EP (end of program) (S50) is detected.
In the exemplary embodiment, above-mentioned steps can be realized especially by following manner.
In step slo, the laser pulse from laser 110 to the transmitting of object 120 to be detected for pre-detection, example
Such as, the duration of laser pulse is about 5 milliseconds.
In step S20, it can sense and determine due to being irradiated by laser pulse by object 120 by optical sensor 140
The power of the light of reflection and scattering.As described above, optical sensor 140 may include photodiode or similar photoelectric cell.
In step s 30：It can be by controller 150 by power I and threshold power IthIt makes comparisons or controller 150 or light
Sensor 140 determining power I can be sent to other short ranges or remote-control device or equipment with threshold power IthIt makes comparisons.
In step S41, if it is determined that power I be greater than or equal to threshold power Ith, then can be determined that the face of object 120
Color is shallower, is adapted for laser detection.In this case, laser can be emitted by 150 indication laser 110 of controller to carry out just
Formula detects, until detection is completed.
In step S42, if it is determined that power I is less than threshold power Ith, then it can be determined that the color of object 120 is deeper,
It is unsuitable for carrying out laser detection.In this case, the instruction that termination detection can be made by controller 150, to detect program knot
Beam.
In addition, step S42 can also be wrapped sends out alarm signal by 150 indicating alarm device 160 of controller.
Fig. 3 shows the schematical flow chart of the detection method of another embodiment according to the application.As shown in figure 3,
After detection program starts (S0 '), the detection method may include following steps：
Step S10 '：Emit laser to object 120 to be detected to be detected；
Step S20 '：The reflected light that by laser irradiation generates and reversed Rayleigh scattering light of the reception from object 120 are simultaneously
It determines the reflected light and scatters the power I of light；
Step S30 '：By determining power I and threshold power IthIt makes comparisons；
Step S41 '：If power I is greater than or equal to threshold power Ith, then detection is continued to execute, until detection is completed；With
Step S42 '：If power I is less than threshold power Ith, then termination detection.
After detection is completed or after termination detection, EP (end of program) (S50 ') is detected.
In the exemplary embodiment, above-mentioned steps can be realized especially by following manner.
In step S10 ', emits laser beam to object 120 to be detected from laser 110 and directly formally examined
It surveys.
In step S20 ', it can sense and determine due to being irradiated by laser pulse by object 120 by optical sensor 140
The power of the light of reflection and reversed Rayleigh scattering.As described above, optical sensor 140 may include photodiode or similar photoelectricity
Element.
In step S30 '：It can be by controller 150 by power I and threshold power IthIt makes comparisons or controller 150 or light
Sensor 140 determining power I can be sent to other short ranges or remote-control device or equipment with threshold power IthIt makes comparisons.
In step S41 ', if it is determined that power I is greater than or equal to threshold power Ith, then can be determined that the face of object 120
Color is shallower, is adapted for laser detection.In this case, can be continued by 150 indication laser 110 of controller emit laser until
Formal detection is completed.
In step S42 ', if it is determined that power I is less than threshold power Ith, then it can be determined that the color of object 120 is deeper,
It is unsuitable for carrying out laser detection.In this case, it can may indicate that laser 110 stops transmitting laser by controller 150, and make
The instruction of termination detection, to detect EP (end of program).
In addition, step S42 ' can also be wrapped sends out alarm signal by 150 indicating alarm device 160 of controller.
Above detailed description has elaborated above-mentioned Raman spectrum inspection by using schematic diagram, flow chart and/or example
Numerous embodiments of measurement equipment and its monitoring method.Include one or more functions in this schematic diagram, flow chart and/or example
And/or in the case of operation, it will be understood by those skilled in the art that each function in this schematic diagram, flow chart or example and/
Or operation can be by various structures, hardware, software, firmware or substantially their arbitrary combination come individually and/or common real
It is existing.In one embodiment, if the stem portion of theme described in embodiments herein can by application-specific integrated circuit (ASIC),
Field programmable gate array (FPGA), digital signal processor (DSP) or other integrated formats are realized.However, this field skill
Art personnel should be understood that some aspects of embodiments disclosed herein on the whole or partly can equally realize and collect
At the one or more computer programs in circuit, being embodied as running on one or more computer (for example, being embodied as one
The one or more programs run on platform or multiple stage computers system), it is embodied as one run on the one or more processors
A or multiple programs (for example, being embodied as the one or more programs run in one or more microprocessors) are embodied as solid
Part, or substantially it is embodied as the arbitrary combination of aforesaid way, and those skilled in the art will be provided with designing according to the application
The ability of circuit and/or write-in software and/or firmware code.In addition, it would be recognized by those skilled in the art that herein described master
The mechanism of topic can be distributed as the program product of diversified forms, and no matter actually be used for executing the signaling bearer of distribution
How is the concrete type of medium, and the exemplary embodiment of herein described theme is applicable in.The example of signal bearing medium includes
But it is not limited to：Recordable-type media, such as floppy disk, hard disk drive, CD (CD, DVD), digital magnetic tape, computer storage；
And transmission type media, such as number and/or analogue communication medium are (for example, optical fiber cable, waveguide, wired communications links, channel radio
Believe link etc.).
Although shown in the drawings of a specific embodiment of the utility model, it will be appreciated by a person skilled in the art that
Even if omitting one or more non-essential component/component, the utility model can still be implemented.In addition, although
Multiple exemplary embodiments have shown and described in combined attached drawing, but it will be appreciated by persons skilled in the art that can be not
To these embodiments, various modifications and variations can be made under the premise of the principle and essence of the application, therefore, the model of the application
Enclosing should be limited by appended claims and its equivalent technical solutions.
Claims (10)
1. a kind of detection device, which is characterized in that the detection device includes：
Laser is configured to object emission laser to be detected；
Raman spectrometer is configured to receive the Raman optical signal from the object；
Optical sensor is disposed for receiving the laser for being reflected and being scattered by the object because stimulated light is irradiated, and determines
The power of laser received by it；With
Controller is configured to the operation of the power control detection device determined based on optical sensor.
2. detection device according to claim 1, wherein the controller is further configured to determine optical sensor
The power make comparisons with a threshold power, and if the power be greater than or equal to the threshold power, the control
Device indication laser transmitting laser processed is detected；If the power is less than the threshold power, the controller instruction
Detection device termination detection.
3. detection device according to claim 2, wherein the detection device further includes warning device, and the control
Device processed is further configured to while indicating detection device termination detection or indicates that the warning device sends alarm later
Signal.
4. detection device according to any one of claim 1 to 3, wherein the detection device further includes：
Fixing device is configured to the surface to be detected of the object is arranged to and is irradiated to the direction of the laser on the surface
Vertically.
5. detection device according to claim 4, wherein the fixing device has：
Clear aperature, laser are irradiated to the surface to be detected of the object across the clear aperature；With
Interior positioning surface, is arranged to vertical with across the direction of laser of the clear aperature, and the object is described
Surface to be detected is configured to be close to the interior positioning surface.
6. detection device according to any one of claim 1 to 3, wherein the detection device further includes：
First spectroscope is arranged in the Raman light light path from the object to the Raman spectrometer and is configured to institute
The laser aiming of laser transmitting is stated to the object and the Raman light from the object is passed across first spectroscope
Transport to the Raman spectrometer, and first spectroscope be further configured to it is predetermined for having of being sent out by laser
The laser of wavelength has certain transmitance.
7. detection device according to claim 6, wherein the detection device further includes：
Second spectroscope is arranged in the Raman light light path from the object to the Raman spectrometer and is configured to reflect
Reflection laser and scattering laser from the object simultaneously make the Raman light from the object be passed across second spectroscope
The Raman spectrometer is transported to, and second spectroscope is further configured to have pre- standing wave by what is sent out by laser
Long laser reflexes to the optical sensor transmitted through first spectroscopical part.
8. detection device according to claim 6, wherein the detection device further include in following optical component at least
One：
First filter plate, first spectroscope being arranged in the Raman light light path and second spectroscopical downstream and
It is disposed for filtering out the Reyleith scanttering light in optical signal；With
Second filter plate is arranged between the laser and first spectroscope and is configured to send out in the laser
It is laser-defined in desired wavelength period.
9. detection device according to claim 6, wherein the detection device further include in following optical component at least
One：
First convergent lens or lens group are arranged between the second spectroscope and the object；
Second convergent lens or lens group are arranged between imaging device and the second spectroscope；With
Third convergent lens or lens group are arranged between Raman spectrometer and the first spectroscope.
10. detection device according to claim 6, wherein
Ranging from 5%-30% of first spectroscope for certain transmitance of the laser of 45 degree of angle incidence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721859028.6U CN207779902U (en) | 2017-12-26 | 2017-12-26 | Raman spectrum detection device based on reflected optical power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721859028.6U CN207779902U (en) | 2017-12-26 | 2017-12-26 | Raman spectrum detection device based on reflected optical power |
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| CN207779902U true CN207779902U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721859028.6U Withdrawn - After Issue CN207779902U (en) | 2017-12-26 | 2017-12-26 | Raman spectrum detection device based on reflected optical power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991286A (en) * | 2017-12-26 | 2018-05-04 | 同方威视技术股份有限公司 | Raman spectrum detection device and method based on reflected optical power |
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2017
- 2017-12-26 CN CN201721859028.6U patent/CN207779902U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991286A (en) * | 2017-12-26 | 2018-05-04 | 同方威视技术股份有限公司 | Raman spectrum detection device and method based on reflected optical power |
| CN107991286B (en) * | 2017-12-26 | 2024-02-27 | 同方威视技术股份有限公司 | Raman spectrum detection equipment and method based on reflected light power |
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