Modular multi-spectral experimental teaching system and its use method

Abstract

The present application provides a modular multi-spectral experimental teaching system and a method for using the same, which can be used for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments, and laser induced breakdown spectroscopy experiments, and any combination of the above experiments can be performed simultaneously to facilitate teaching and learning; by setting a platform, a light source device, an optical path adjustment device, a sample stage, a collecting device, and a data processing device, the light source device can have different light sources corresponding to different experiments, the light emitted by the light source passes through the optical path adjustment device and is directed to the sample stage to form a spectrum and an image, the collecting device is close to the sample stage and receives the information of the spectrum and the image to complete any combination of the above experiments; the data processing device is electrically connected to the collecting device, and the spectrum and image information is processed through a standardization module, a preprocessing module, and a qualitative and quantitative analysis module to facilitate the analysis and integration of the experimental process and experimental results information to facilitate teaching and learning.

Description

Technical Field

[0001] The present application relates to the technical field of spectral experimental equipment, and in particular to a modular multi-spectral experimental teaching system and a method of using the same. Background Art

[0002] With the continuous evolution of modern new technologies, the depth of integration of technology and teaching is also constantly improving. Spectral detection is an important part of optical teaching, which helps students understand the properties of light.

[0003] The current experiments related to spectral detection include reflection spectroscopy experiments, transmission spectroscopy experiments, Raman spectroscopy experiments and LIBS (Laser Induced Breakdown Spectroscopy) experiments. Most of the existing experimental teaching systems use different devices or equipment to conduct them separately.

[0004] However, the above teaching system is not convenient for teaching and learning, and different devices need to be used for teaching and learning respectively, which is costly. Summary of the invention

[0005] In order to solve at least one of the problems mentioned in the background technology, the present application provides a modular multispectral experimental teaching system and a method of using the same, aiming to solve the technical problems that the existing teaching system is not convenient for teaching and learning, requires the use of different equipment for teaching and learning separately, and is costly.

[0006] In order to achieve the above-mentioned purpose, in a first aspect, an embodiment of the present application provides a modular multi-spectral experimental teaching system for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and / or laser induced breakdown spectroscopy experiments, wherein the modular multi-spectral experimental teaching system comprises a platform, a light source device, an optical path adjustment device, a sample stage, a collection device and a data processing device, wherein the light source device, the optical path adjustment device, the sample stage, the collection device and the data processing device are all located on the platform,

[0007] The light source device comprises at least one light source, the light emitted by the light source is sequentially directed to the sample stage through the light path adjustment device, and forms a spectrum and an image on the sample stage, the collecting device is arranged close to the sample stage, and receives information of the spectrum and the image;

[0008] The data processing device is electrically connected to the collection device, and comprises a standardization module, a preprocessing module and a qualitative and quantitative analysis module which are electrically connected in sequence, and is used for performing data processing on spectrum and image information.

[0009] In the above-mentioned modular multi-spectral experimental teaching system, optionally, the light source device includes a plurality of light sources, and the plurality of light sources are evenly arranged along a direction perpendicular to the direction in which the light sources emit light.

[0010] In the above-mentioned modular multi-spectral experimental teaching system, optionally, the light source device includes a first optical mirror and a plurality of second optical mirrors, the first optical mirror is arranged close to the light path adjustment device and is located on the light path of the light emitted by one of the light sources, and all the second optical mirrors are located between the light source and the first optical mirror, and are used to reflect the light emitted by all the light sources to the first optical mirror, and the first optical mirror reflects the light to the light path adjustment device;

[0011] All of the second optical lenses are detachable optical lenses.

[0012] In the above modular multi-spectral experimental teaching system, optionally, the optical path adjustment device includes a beam expander, an aperture and a zoom lens group, and the light passes through the beam expander, the aperture and the zoom lens group in sequence and is emitted to the sample stage;

[0013] The zoom lens group is movably arranged on the platform via a first guide rail, the extension direction of the first guide rail is the same as the direction of the light in the optical path adjustment device, and the extension direction of the optical path adjustment device is perpendicular to the extension direction of the light source device.

[0014] In the above-mentioned modular multi-spectral experimental teaching system, optionally, it further includes a third optical mirror, the third optical mirror is located between the optical path adjustment device and the sample stage, and is used to reflect the light to the sample stage; the extension direction of the light from the third optical mirror to the sample stage is parallel to and opposite to the extension direction of the light in the light source device;

[0015] The third optical mirror is a dichroic mirror.

[0016] In the above modular multi-spectral experimental teaching system, optionally, it further includes an image acquisition device for recording or observing the spectrum and image of the sample stage, and the acquisition end of the image acquisition device faces the sample stage;

[0017] The image acquisition device is located on a side of the third optical mirror away from the sample stage, or the image acquisition device is located on a peripheral side of the sample stage.

[0018] In the above modular multi-spectral experimental teaching system, optionally, a rotating disk is provided on the platform;

[0019] The collecting device includes an optical fiber collecting lens and a plurality of sensors, and both are arranged on the rotating disk. The optical fiber collecting lens and the plurality of sensors are both facing the sample stage, and the optical fiber collecting lens and the plurality of sensors are arranged in a ring-shaped interval.

[0020] In the above modular multi-spectral experimental teaching system, optionally, the collecting device is located on a side of the sample stage close to the optical path adjusting device.

[0021] And / or, the collecting device further includes a fourth optical mirror, wherein the fourth optical mirror is located between the third optical mirror and the sample stage, and the fourth optical mirror reflects the light reflected by the third optical mirror to the optical fiber collecting lens.

[0022] In the above-mentioned modular multi-spectral experimental teaching system, optionally, the collection device also includes a spectrometer and a signal acquisition circuit, and the spectrometer and the signal acquisition circuit are electrically connected to the data processing device, and the spectrometer and the signal acquisition circuit obtain the spectrum and image information and send it to the data processing device.

[0023] In a second aspect, the present application also provides a method for using a modular multi-spectral experimental teaching system, which is used for the modular multi-spectral experimental teaching system. The method for using the modular multi-spectral experimental teaching system includes:

[0024] Controlling the light source device to generate light, the light is sequentially emitted to the sample stage through the light path adjustment device, and forms a spectrum and an image on the sample stage;

[0025] Controlling the collection device to obtain spectrum and image information;

[0026] The standardization module of the control data processing device performs standardization processing on the spectrum and image information, and the standardization processing includes:

[0027] Obtaining any number of first instructions, and performing standardization processing on spectrum and image information according to the first instructions;

[0028] The preprocessing module of the data processing device is controlled to preprocess the information after the standardization process, and the preprocessing includes:

[0029] Obtain any number of second instructions, and pre-process the standardized information according to the second instructions;

[0030] The qualitative and quantitative analysis module of the data processing device is controlled to perform qualitative and quantitative analysis on the preprocessed information, wherein the qualitative and quantitative analysis includes:

[0031] Obtaining any number of third instructions, and performing qualitative and quantitative analysis on the preprocessed information according to the third instructions;

[0032] The first instruction, the second instruction and the third instruction are instructions stored in the data processing device and / or instructions input by a user.

[0033] The modular multi-spectral experimental teaching system and the use method thereof provided in the present application can be used for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments, and any combination of the above experiments can be carried out simultaneously to complete multiple experiments on one device, which is convenient for teaching and learning; by setting a platform, a light source device, an optical path adjustment device, a sample stage, a collecting device and a data processing device, the light source device can have different light sources corresponding to different experiments, the light emitted by the light source passes through the optical path adjustment device and is directed to the sample stage to form a spectrum and an image, the collecting device is close to the sample stage and receives the spectrum and image information to complete any combination of the above experiments; the data processing device is electrically connected to the collecting device, and the spectrum and image information are processed through the standardization module, the preprocessing module and the qualitative and quantitative analysis module, so as to analyze and integrate the information of the experimental process and the experimental results, which is convenient for teaching and learning.

[0034] The structure of the present application and its other application objects and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the structure of a modular multi-spectral experimental teaching system provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a data processing device for a modular multi-spectral experimental teaching system provided in an embodiment of the present application;

[0038] Figure 3 A flowchart of a method for using the modular multi-spectral experimental teaching system provided in an embodiment of the present application.

[0039] Description of reference numerals:

[0040] 100-modularized multi-spectral experimental teaching system; 110-platform; 120-light source device; 130-optical path adjustment device; 140-sample stage; 150-collection device; 160-data processing device; 121-light source; 121A-pulsed solid laser light source; 121B-visible broadband light source; 121C-continuous green light source; 121D-helione laser light source; 121E-infrared broadband light source; 122-frequency doubling crystal module; 123-first optical mirror; 124-second optical mirror; 124A-second optical mirror; 124B-second optical mirror; 124C-second optical mirror; 12 4D-second optical mirror; 124E-second optical mirror; 124F-second optical mirror; 124G-second optical mirror; 124H-second optical mirror; 161-standardization module; 162-preprocessing module; 163-qualitative and quantitative analysis module; 131-beam expander; 132-aperture; 133-zoom lens group; 1331-zoom lens; 134-first guide rail; 170-third optical mirror; 180-image acquisition device; 151-optical fiber collection lens; 152-sensor; 153-fourth optical mirror; 154-transmission table; 155-spectrometer; 156-signal acquisition circuit.

[0041] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In the related technologies, Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments need to be carried out on different equipment. During the teacher's teaching process and the student's practice process, both the teacher and the student need to operate on different equipment to complete the experiment. The operation steps are cumbersome, and it is difficult to understand the knowledge through practical operations and combining multiple experiments. It is not convenient for teaching and learning, and the equipment cost is high.

[0043] Based on the above technical problems, the present application provides a modular multi-spectral experimental teaching system and a method of using the same. The modular multi-spectral experimental teaching system is used for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and / or laser induced breakdown spectroscopy experiments. The modular multi-spectral experimental teaching system includes a platform, a light source device, an optical path adjustment device, a sample stage, a collecting device and a data processing device. The light source device, the optical path adjustment device, the sample stage, the collecting device and the data processing device are all located on the platform. The light source device includes at least one light source. The light emitted by the light source is sequentially emitted to the sample stage through the optical path adjustment device, and a spectrum and an image are formed on the sample stage. The collecting device is arranged close to the sample stage and receives information of the spectrum and the image. The data processing device is electrically connected to the collecting device. The data processing device includes a standardization module, a preprocessing module and a qualitative and quantitative analysis module that are electrically connected in sequence, and is used to perform data processing on the information of the spectrum and the image.

[0044] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0045] Figure 1 A schematic diagram of the structure of a modular multi-spectral experimental teaching system provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a data processing device for a modular multispectral experimental teaching system provided in an embodiment of the present application.

[0046] See attached Figure 1 And attached Figure 2 As shown, in the first aspect, the embodiment of the present application provides a modular multi-spectral experimental teaching system 100 for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments.

[0047] It is understandable that the modular multi-spectral experimental teaching system 100 provided in the embodiment of the present application can perform all the above experiments at the same time, or only perform one of the experiments, or any combination of different experiments. For example, the modular multi-spectral experimental teaching system 100 provided in the embodiment of the present application can only perform Raman spectroscopy experiments, or only perform reflection spectroscopy experiments, or simultaneously perform transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments, or simultaneously perform all the above experiments. The embodiment of the present application does not list all the experimental combinations that can be performed. It is understandable that the experiments used in the embodiment of the present application may not only be the above examples, which will not be described in detail here.

[0048] The following description is made by taking the modular multi-spectral experimental teaching system 100 provided in the embodiment of the present application to carry out all the above experiments at the same time as an example.

[0049] Specifically, refer to the attached Figure 1 And attached Figure 2 As shown, the modular multi-spectral experimental teaching system 100 includes a platform 110, a light source device 120, an optical path adjustment device 130, a sample stage 140, a collection device 150 and a data processing device 160, wherein the light source device 120, the optical path adjustment device 130, the sample stage 140, the collection device 150 and the data processing device 160 are all located on the platform 110.

[0050] The light source device 120 includes at least one light source 121. For example, the number of light sources 121 can be arbitrary. For example, the number of light sources 121 can be two, three, four, etc. The embodiment of the present application does not limit the number of light sources 121 in the light source device 120, nor is it limited to the above examples.

[0051] The following description will be made by taking the light source device 120 including five light sources 121 as an example.

[0052] It can be understood that the five light sources 121 can be five different light sources 121. For example, the five light sources 121 can be a pulsed solid laser light source 121A, a visible broadband light source 121B, a continuous green light source 121C, a helium-neon laser light source 121D and an infrared broadband light source 121E.

[0053] It should be noted that the pulsed solid laser light source 121A can be used for laser induced breakdown spectroscopy experiments; the continuous green light source 121C and the helium-neon laser light source 121D can both be used for Raman spectroscopy experiments; the visible broadband light source 121B and the infrared broadband light source 121E can both be used for reflection spectroscopy experiments and transmission spectroscopy experiments.

[0054] The above examples are only partial. The light source 121 can be used for experiments other than the above examples, which will not be elaborated here.

[0055] Further, the wavelength of the light source 121 can be arbitrary. For example, the wavelength of the pulse solid laser light source 121A can be 1064nm, 523nm, or 266nm, the wavelength of the continuous green light source 121C can be 532nm, the wavelength of the helium-neon laser light source 121D can be 632.8nm, etc. The wavelengths listed in the embodiments of the present application are only examples and can be adjusted according to actual conditions.

[0056] Furthermore, the light source device 120 may also include a frequency doubling crystal module 122 for adjusting the wavelength of the light source 121 . The frequency doubling crystal module 122 is disposed close to the corresponding light source 121 , and the wavelength of the light emitted by the light source 121 changes after passing through the frequency doubling crystal module 122 .

[0057] It can be understood that the number of frequency doubling crystal modules 122 can be arbitrary and can correspond to any light source 121. For example, in the embodiment of the present application, the pulsed solid-state laser light source 121A is provided with two frequency doubling crystal modules 122. The wavelength of the pulsed solid-state laser light source 121A can be 1064nm, and the wavelengths of the two frequency doubling crystal modules 122 can be 532nm and 266nm respectively. The light emitted by the pulsed solid-state laser light source 121A passes through the two frequency doubling crystal modules 122 respectively to change the wavelength of the emitted light.

[0058] It should be noted that the two frequency doubling crystal modules 122 can both be disposed in the optical path of the light emitted by the pulsed solid-state laser light source 121A, so as to change the wavelength of the light emitted by the pulsed solid-state laser light source 121A.

[0059] It is understandable that the above-mentioned pulse solid laser light source 121A is provided with two frequency doubling crystal modules 122 for example only, and the other light sources 121 can also be provided with any number and any wavelength of frequency doubling crystal modules 122, which will not be elaborated here.

[0060] The light emitted by the light source 121 is sequentially directed to the sample stage 140 through the light path adjustment device 130, and forms a spectrum and an image on the sample stage 140. The collection device 150 is arranged close to the sample stage 140, and receives information of the spectrum and the image;

[0061] The data processing device 160 is electrically connected to the collection device 150 , and includes a standardization module 161 , a preprocessing module 162 , and a qualitative and quantitative analysis module 163 , which are electrically connected in sequence, and are used to perform data processing on the spectrum and image information.

[0062] The embodiment of the present application provides a modular multi-spectral experimental teaching system 100, which can be used for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments, and any combination of the above experiments can be carried out simultaneously to complete multiple experiments on one device, which is convenient for teaching and learning; by setting a platform 110, a light source device 120, an optical path adjustment device 130, a sample stage 140, a collection device 150 and a data processing device 160, the light source device 120 can have different light sources 121 corresponding to different experiments, and the light emitted by the light source 121 passes through the optical path adjustment device 130 and is emitted to the sample stage 140 to form a spectrum and an image. The collection device 150 is close to the sample stage 140 and receives spectrum and image information to complete any combination of the above experiments; the data processing device 160 is electrically connected to the collection device 150, and the spectrum and image information are processed through the standardization module 161, the preprocessing module 162 and the qualitative and quantitative analysis module 163, so as to analyze and integrate the information of the experimental process and experimental results, which is convenient for teaching and learning.

[0063] See attached Figure 1 As shown, as an optional implementation, the light source device 120 includes a plurality of light sources 121 , and the plurality of light sources 121 are evenly arranged along a direction perpendicular to the direction in which the light sources 121 emit light.

[0064] Specifically, as shown in the accompanying drawings, the five light sources 121 are distributed in sequence along the direction perpendicular to the light emitted by the light source 121: a pulsed solid laser light source 121A, a visible broadband light source 121B, a continuous green light source 121C, a helium-neon laser light source 121D and an infrared broadband light source 121E.

[0065] It should be noted that the arrangement order of the light sources 121 is only an example, and the arrangement order of the light sources 121 in the light source device 120 is not limited to the one described above, and can be arranged arbitrarily according to actual conditions.

[0066] Furthermore, when the pulsed solid laser light source 121A corresponds to a frequency doubling crystal module 122, the frequency doubling crystal module 122 is located on the optical path of the light emitted by the pulsed solid laser light source 121A. As shown in the accompanying drawings, the extension direction of the frequency doubling crystal module 122 is the same as the extension direction of the pulsed solid laser light source 121A, so as to facilitate the adjustment of the wavelength of the pulsed solid laser light source 121A.

[0067] See attached Figure 1As shown, as an optional embodiment, the light source device 120 includes a first optical mirror 123 and a plurality of second optical mirrors 124. The first optical mirror 123 is arranged close to the optical path adjusting device 130 and is located on the optical path of the light emitted by one of the light sources 121. All the second optical mirrors 124 are located between the light source 121 and the first optical mirror 123, and are used to reflect the light emitted by all the light sources 121 to the first optical mirror 123, and the first optical mirror 123 reflects the light to the optical path adjusting device 130.

[0068] Specifically, the first optical mirror 123 can be located on a side of the light source device 120 away from the light source 121, and all the second optical mirrors 124 are located in the optical path of the light emitted by the light source 121 of the light source device 120. The second optical mirror 124 reflects the light emitted by all the light sources 121 to the first optical mirror 123, and the first optical mirror 123 reflects the light emitted by all the light sources 121 to the optical path adjustment device 130 to facilitate the subsequent steps.

[0069] When the light sources 121 in the light source device 120 are arranged in the above manner, the first optical mirror 123 can be located in the extension direction of the visible broadband light source 121B, or in the extension direction of the pulsed solid laser light source 121A, or in the extension direction of the continuous green light source 121C or the helium-neon laser light source 121D or the infrared broadband light source 121E, and of course, can also be located at other positions.

[0070] It is understandable that when a frequency doubling crystal module 122 is provided in the extension direction of the pulse solid laser light source 121A, in order to reduce the footprint of the light source device 120 on the platform 110, the first optical mirror 123 can be located in the extension direction of the visible broadband light source 121B.

[0071] It should be noted that the number of second optical mirrors 124 can be arbitrary. For example, the number of second optical mirrors 124 can be one, two, three, four, five, etc. The embodiment of the present application does not limit the number of second optical mirrors 124, nor is it limited to the above examples.

[0072] It should be noted that the second optical mirrors 124 are all used to reflect the light from the light source 121 to the first optical mirror 123 , so the number of the second optical mirrors 124 can be adaptively adjusted.

[0073] Furthermore, all the second optical lenses 124 are detachable optical lenses.

[0074] Specifically, for example, when conducting a laser induced breakdown spectroscopy experiment, if the frequency doubling crystal module 122 is not used to change the wavelength, a second optical mirror 124A can be set between the pulsed solid-state laser light source 121A and the frequency doubling crystal module 122. The second optical mirror 124A reflects the light and reflects it to the second optical mirror 124B set near the visible broadband light source 121B of the pulsed solid-state laser light source 121A. The second optical mirror 124B reflects the light to the first optical mirror 123.

[0075] Another exemplary example, when conducting a laser induced breakdown spectroscopy experiment, if the frequency doubling crystal module 122 is used to change the wavelength, a second optical mirror 124C can be set on the side of the frequency doubling crystal module 122 away from the pulsed solid laser light source 121A. The second optical mirror 124C reflects the light and reflects it to the second optical mirror 124D located between the second optical mirror 124B and the first optical mirror 123. The second optical mirror 124D reflects the light to the first optical mirror 123.

[0076] As another example, when conducting a laser induced breakdown spectroscopy experiment, if two frequency doubling crystal modules 122 are used continuously to change the wavelength, for example, the light emitted by the 1064nm pulsed solid laser light source 121A passes through the 532nm frequency doubling crystal module 122 and the 266nm frequency doubling crystal module 122 in sequence, and then is directly emitted to the first optical mirror 123 through the second optical mirror 124E.

[0077] As another example, when conducting a broadband spectroscopy experiment, if a visible broadband light source 121B is used, the light emitted by the visible broadband light source 121B can be directly reflected by the first optical mirror 123; if an infrared broadband light source 121E is used, the light emitted by the infrared broadband light source 121E can be reflected to the second optical mirror 124B through the second optical mirror 124F, and then reflected to the first optical mirror 123 through the second optical mirror 124B.

[0078] Another exemplary example, when conducting a Raman spectroscopy experiment, if a continuous green light source 121C is used, the light emitted by the continuous green light source 121C can be reflected by the second optical mirror 124G to the second optical mirror 124B, and then reflected by the second optical mirror 124B to the first optical mirror 123; if a helium-neon laser light source 121D is used, the light emitted by the helium-neon laser light source 121D can be reflected by the second optical mirror 124H to the second optical mirror 124B, and then reflected by the second optical mirror 124B to the first optical mirror 123.

[0079] As another example, when the reflection spectrum experiment and the Raman spectrum experiment are carried out simultaneously, if the visible broadband light source 121B and the continuous green light source 121C are used, the light emitted by the visible broadband light source 121B is directly reflected to the first optical mirror 123, and the light emitted by the continuous green light source 121C is reflected to the second optical mirror 124B through the second optical mirror 124G, and then reflected to the first optical mirror 123. The first optical mirror 123 reflects the light emitted by the visible broadband light source 121B and the continuous green light source 121C to the optical path adjustment device 130 at the same time, so as to carry out the broadband spectrum experiment and the Raman spectrum experiment at the same time.

[0080] It is understandable that when any combination of the above experiments is performed, any light source 121 can be used to reflect the light emitted by the corresponding light source 121 to the first optical mirror 123, and other examples are not described in detail here.

[0081] It should be noted that all second optical mirrors 124 are detachable optical mirrors, for example, all the second optical mirrors 124 described above can be detached and installed, and can be adjusted according to actual conditions for easy use. Furthermore, the reflection angles of all second optical mirrors 124 can be adjusted for easy adjustment to accurately reflect light.

[0082] Furthermore, the detachable optical mirror can be detachable and installable relative to the platform. For example, the detachable optical mirror can be fixed on the platform 110 by a corresponding fixing member (not shown in the figure), and the detachable optical mirror can be detachably installed on the fixing member. The embodiment of the present application does not limit the specific structure of the detachable optical mirror, nor is it limited to the above example.

[0083] As an optional implementation, the optical path adjustment device 130 includes a beam expander 131, an aperture 132, and a zoom lens group 133. The light passes through the beam expander 131, the aperture 132, and the zoom lens group 133 in sequence and is emitted to the sample stage 140. The beam expander 131 can change the spot size of the light, the aperture 132 can limit the field size of the light; the zoom lens group 133 can adjust the focal length of the light.

[0084] Specifically, the collimator 131 and the diaphragm 132 are both fixed on the platform 110, and the zoom lens group 133 is movably set on the platform 110 through the first guide rail 134. The extension direction of the first guide rail 134 is the same as the direction of the light in the optical path adjustment device 130, and the extension direction of the optical path adjustment device 130 is perpendicular to the extension direction of the light source device 120. For example, the distance between the zoom lens group 133 and the diaphragm 132 and the collimator 131 can be adjusted through the first guide rail 134 to adjust the focal length of the light.

[0085] Furthermore, the zoom lens group 133 may include a plurality of zoom lenses 1331 , each of which may be movably disposed on the platform 110 , and the focal length of the light may be adjusted by adjusting the position of any zoom lens 1331 .

[0086] As an optional embodiment, a third optical mirror 170 is further included, which is located between the light path adjustment device 130 and the sample stage 140 and is used to reflect light to the sample stage 140; the extension direction of the light from the third optical mirror 170 to the sample stage 140 is parallel to and opposite to the extension direction of the light in the light source device 120.

[0087] Furthermore, the third optical mirror 170 is a dichroic mirror. For example, after the light is reflected by the third optical mirror 170, a spectrum and an image are formed on the sample stage 140. The spectrum and image information can be obtained from the third optical mirror 170, which is convenient for observing the experimental results and the experimental process.

[0088] See attached Figure 1 As shown, as an optional embodiment, it also includes an image acquisition device 180 for recording or observing the spectrum and image of the sample stage 140, and the acquisition end of the image acquisition device 180 faces the sample stage 140;

[0089] The image acquisition device 180 is located on a side of the third optical mirror 170 away from the sample stage 140 , or the image acquisition device 180 is located on the peripheral side of the sample stage 140 , so as to obtain the experimental process and experimental results.

[0090] It can be understood that the image acquisition device 180 can be any device with spectral and image acquisition functions, such as a camera, a webcam, a video camera, etc. The embodiment of the present application does not limit the specific form of the image acquisition device 180, nor is it limited to the above examples.

[0091] As an optional implementation, a rotating disk (not shown in the figure) is provided on the platform 110 , and the rotating disk is rotatably connected to the platform 110 .

[0092] The collecting device 150 includes a fiber optic collecting lens 151 and multiple sensors 152, all of which are arranged on a rotating disk. The fiber optic collecting lens 151 and the multiple sensors 152 are all facing the sample stage 140 to collect and record the spectrum and image information formed by the light on the sample stage 140. The fiber optic collecting lens 151 and the multiple sensors 152 are arranged in a ring shape at intervals. By rotating the rotating disk, different sensors 152 or fiber optic collecting lenses 151 can be brought close to the sample stage 140 to sense and collect spectrum and image information.

[0093] It is understandable that the optical fiber collecting lens 151 and the multiple sensors 152 can also be arranged close to the axis of the rotating disk, so that the optical fiber collecting lens 151 and the multiple sensors 152 can simultaneously complete the sensing and collection of the spectrum and image on the sample stage 140.

[0094] It should be noted that the sensor 152 may include but is not limited to a photoelectric sensor 152, which can convert an optical signal into an electrical signal. A filter may be provided on a side of the sensor 152 close to the sample stage 140 to filter a preset optical signal.

[0095] See attached Figure 1 As shown, as an optional embodiment, the collecting device 150 is located on a side of the sample stage 140 close to the optical path adjusting device 130.

[0096] And / or, the collecting device 150 further includes a fourth optical mirror 153 , which is located between the third optical mirror 170 and the sample stage 140 , and reflects the light reflected by the third optical mirror 170 to the optical fiber collecting lens 151 .

[0097] Specifically, the collecting device 150 may be located on a side of the sample stage 140 close to the optical path adjusting device 130 , so as to save the floor space of the modular multi-spectral experimental teaching system 100 .

[0098] On the other hand, the number of the optical fiber collecting lenses 151 can be two, one of which is arranged on a rotating disk together with multiple sensors 152, and the other optical fiber collecting lens 151 can be arranged between the optical path adjustment device 130 and the sample stage 140, and faces the optical path between the third optical mirror 170 and the sample stage 140.

[0099] It is understandable that, when conducting a reflection spectrum experiment, the light can also be directly reflected to another optical fiber collecting lens 151 through the fourth optical mirror 153, so that the light information of the reflection spectrum experiment can be collected and recorded through the optical fiber collecting lens 151.

[0100] Exemplarily, when conducting a transmission spectrum experiment, a transmission platform 154 can be set between the fourth optical mirror 153 and another optical fiber collecting lens 151. By setting different transmission plates on the transmission platform 154, the light is reflected into the transmission platform 154 by the fourth optical mirror 153, and enters the optical fiber collecting lens 151 through different transmission plates to complete the transmission spectrum experiment.

[0101] Furthermore, when all the above experiments are completed at the same time, in order to improve the efficiency of the experiment completion, the transmission spectrum experiment can be completed in the above manner, and the remaining experiments can reflect the light to the sample stage 140 through the third optical mirror 170, and complete the spectrum and image information collection through the sensor 152 on the rotating disk and the optical fiber collection lens 151. Of course, the above experimental completion method is only one of the multiple implementation methods, which can be arbitrarily combined and will not be described in detail here.

[0102] It can be understood that the spectrum and image referred to in the embodiments of the present application include but are not limited to the spectrum and image formed by light on the surface of an opaque physical object and related information of the spectrum and image directly received by light through the sensor 152 and the optical fiber collection lens 151.

[0103] See attached Figure 1 As shown, as an optional embodiment, the collecting device 150 also includes a spectrometer 155 and a signal acquisition circuit 156. The spectrometer 155 and the signal acquisition circuit 156 are electrically connected to the data processing device 160 (not shown in the figure). The spectrometer 155 and the signal acquisition circuit 156 obtain spectral and image information and send it to the data processing device 160, so that the spectral and image information obtained by the spectrometer 155 and the signal acquisition circuit 156 are used to generate specific results through the data processing device 160. The expression of the results includes but is not limited to text, numbers, charts, etc.

[0104] It can be understood that there can be multiple spectrometers 155 with different wavelength ranges and measurement accuracy, which can be selected arbitrarily according to actual conditions; the signal acquisition circuit 156 can be connected to all sensors 152 at the same time. For example, the signal acquisition circuit 156 can be a multi-channel signal amplification and acquisition circuit, which can simultaneously record the spectrum and image information detected by all sensors 152.

[0105] The modular multi-spectral experimental teaching system 100 provided in the embodiment of the present application can be used for Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and laser induced breakdown spectroscopy experiments, and any combination of the above experiments can be carried out simultaneously to complete multiple experiments on one device, which is convenient for teaching and learning; by setting a platform 110, a light source device 120, an optical path adjustment device 130, a sample stage 140, a collecting device 150 and a data processing device 160, the light source device 120 can have different light sources 121 corresponding to different experiments, and the light emitted by the light source 121 passes through the optical path adjustment device 130 and is emitted to the sample stage 140 to form a spectrum and an image. The collecting device 150 is close to the sample stage 140 and receives the information of the spectrum and the image to complete any combination of the above experiments; the data processing device 160 is electrically connected to the collecting device 150, and the spectrum and image information are processed through the standardization module 161, the preprocessing module 162 and the qualitative and quantitative analysis module 163, so as to analyze and integrate the information of the experimental process and the experimental results, which is convenient for teaching and learning.

[0106] Figure 3 A flowchart of a method for using the modular multi-spectral experimental teaching system provided in an embodiment of the present application.

[0107] Second, refer to the attached Figure 3 As shown, the embodiment of the present application also provides a method for using the modular multi-spectral experiment teaching system 100, which is used for the modular multi-spectral experiment teaching system 100. The method for using the modular multi-spectral experiment teaching system 100 includes the following steps:

[0108] S100: Control the light source device to generate light, and the light is sequentially emitted to the sample stage through the light path adjustment device, and forms a spectrum and an image on the sample stage;

[0109] S200: Controlling the collection device to obtain information of the spectrum and the image, such as the intensity of the light, the wavelength of the spectrum, the peak of the spectrum, the frequency of the spectrum, etc.;

[0110] S300: Controlling the standardization module of the data processing device to perform standardization processing on the spectrum and image information to facilitate subsequent preprocessing.

[0111] Standardization includes:

[0112] S310: Obtain any number of first instructions, and perform standardization processing on spectrum and image information according to the first instructions.

[0113] It is understandable that the number of first instructions can be multiple. For example, the number of first instructions can be two, three, or four. The embodiments of the present application do not limit the number of first instructions and are not limited to the above examples.

[0114] It should be noted that the first instruction can be the result of importing one of the experiments, or the results of all experiments, or the reference results imported into a database or server, or it can be a customized instruction content. The embodiment of the present application does not limit the specific content of the first instruction, nor is it limited to the above examples.

[0115] S400: Control the preprocessing module of the data processing device to preprocess the information after the standardization process.

[0116] Preprocessing includes:

[0117] S410: Obtain any number of second instructions, and pre-process the standardized information according to the second instructions;

[0118] Specifically, the second instruction may include but is not limited to data smoothing, spectral normalization, peak calibration, high-frequency filtering, dark noise processing or wavelength calibration of the standardized information. The embodiment of the present application does not limit the way in which the preprocessing module 162 performs preprocessing, nor is it limited to the above examples.

[0119] It can be understood that the specific implementation of the above second instruction is only an example.

[0120] Furthermore, in the above-mentioned second instruction, the second instruction may have multiple sub-instructions, and the user may select different sub-instructions to implement the second instruction. For example, data smoothing may be achieved through neighbor point mosaic, moving average, weighted average, etc., and spectral normalization may be achieved through vector normalization, return to zero correction, etc. It can be understood that the embodiments of the present application do not limit the specific implementation methods in the sub-instructions, nor are they limited to the above-mentioned examples.

[0121] It should be noted that the method and specific implementation method adopted by the above-mentioned preprocessing module 162 are only examples. The processing method can be increased or the specific implementation method can be changed according to the actual situation, which will not be elaborated here.

[0122] Furthermore, the embodiment of the present application does not limit the specific order in which the preprocessing module 162 performs preprocessing, nor is it limited to the above example.

[0123] S500: Control the qualitative and quantitative analysis module of the data processing device to perform qualitative and quantitative analysis on the pre-processed information.

[0124] As an optional implementation, the qualitative and quantitative analysis module of the control data processing device performs qualitative and quantitative analysis on the preprocessed information, including:

[0125] S510: Control the data label module of the data processing device to perform label processing on the pre-processed information.

[0126] It is understandable that the embodiments of the present application do not limit the implementation method of the data labeling module (not shown in the figure) to label the information, nor are they limited to the above examples.

[0127] S520: Control the qualitative and quantitative analysis module of the data processing device to perform qualitative and quantitative analysis on the information after label processing.

[0128] The qualitative and quantitative analysis module includes a plurality of third instructions, and the qualitative and quantitative analysis processing includes:

[0129] S521: Obtain any number of third instructions, and perform qualitative and quantitative analysis on the preprocessed information according to the third instructions.

[0130] Specifically, the third instruction may include but is not limited to qualitative analysis and quantitative analysis of the standardized information. Specifically, the qualitative analysis can be achieved by comparing the information in the database and the information after label processing; the quantitative analysis can be achieved through linear regression, classification, and clustering. It can be understood that the embodiment of the present application does not limit the specific implementation method of the third instruction, nor is it limited to the above examples.

[0131] It can be understood that the specific implementation of the third instruction is only an example.

[0132] Furthermore, in the above-mentioned second instruction, the third instruction may also have multiple sub-instructions, and the user may select different sub-instructions to implement the third instruction. For example, the classification may be implemented by specific implementation methods such as support vector machine, decision tree, random forest, neural network, Gaussian process, etc. It is to be understood that the embodiments of the present application do not limit the specific implementation methods in the above-mentioned methods, nor are they limited to the above-mentioned examples.

[0133] Furthermore, clustering can be implemented by specific implementations such as K-means clustering algorithm and hierarchical clustering. It is understandable that the embodiments of the present application do not limit the specific implementations in the above-mentioned manners, nor are they limited to the above-mentioned examples.

[0134] It should be noted that the methods and specific implementations adopted by the above-mentioned qualitative and quantitative analysis module 163 are only examples. Processing methods can be added or specific implementations can be changed according to actual conditions, which will not be elaborated here.

[0135] It can be understood that the embodiments of the present application do not limit the actual forms of the above-mentioned first instruction, second instruction, third instruction, sub-instructions of the second instruction, and sub-instructions of the third instruction. For example, the above-mentioned instructions can be options of some software interfaces, or physical buttons, or options of web page interfaces, or code-generated instructions, or other forms, which are not elaborated in the embodiments of the present application.

[0136] As an optional implementation, the first instruction, the second instruction and the third instruction are instructions stored in the data processing device 160 and / or input instructions obtained from the user.

[0137] Specifically, the first instruction, the second instruction, and the third instruction may all be instructions stored in the data processing device 160, or may all be instructions input by the acquired user, or may be partially instructions stored in the data processing device 160 and the other partially instructions input by the acquired user. The embodiment of the present application does not limit the acquisition form of the first instruction, the second instruction, and the third instruction, nor is it limited to the above example.

[0138] It can be understood that the instructions stored in the data processing device 160 may be option instructions provided by the user when using the corresponding function, and the user's input instructions obtained may be instructions added by the user when using the corresponding function. The embodiment of the present application does not limit the specific formation of the stored existing instructions and the user's input instructions, and they can be set according to actual conditions.

[0139] Furthermore, the embodiment of the present application does not limit the specific order in which the qualitative and quantitative analysis module 163 performs qualitative and quantitative analysis processing, nor is it limited to the above example.

[0140] As an optional implementation, after the qualitative and quantitative analysis module 163 of the control data processing device 160 performs qualitative and quantitative analysis on the pre-processed information, the method further includes:

[0141] S600, controlling the data output module to output the information after the qualitative and quantitative analysis module performs the qualitative and quantitative analysis.

[0142] Specifically, the output form of the data output module (not shown in the figure) includes but is not limited to outputting charts, outputting text, outputting voice, etc. The embodiments of the present application do not limit the specific implementation methods of the above methods, nor are they limited to the above examples.

[0143] It can be understood that the specific output methods of the data output module include but are not limited to web page interface, teaching system instrument display interface, electronic device interface, mini-program interface, etc. The embodiment of the present application does not limit the specific output methods of the data output module, nor is it limited to the above examples.

[0144] In the description of the embodiments of the present application, it should be understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0145] The terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise precisely and specifically specified.

[0146] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A modular multispectral experimental teaching system, characterized in that: For Raman spectroscopy experiments, reflection spectroscopy experiments, transmission spectroscopy experiments and / or laser induced breakdown spectroscopy experiments, the modular multi-spectral experimental teaching system comprises a platform, a light source device, an optical path adjustment device, a sample stage, a collection device and a data processing device, wherein the light source device, the optical path adjustment device, the sample stage, the collection device and the data processing device are all located on the platform. The light source device comprises at least one light source, the light emitted by the light source is sequentially directed to the sample stage through the light path adjustment device, and forms a spectrum and an image on the sample stage, the collecting device is arranged close to the sample stage, and receives information of the spectrum and the image; The data processing device is electrically connected to the collection device, and the data processing device includes a standardization module, a preprocessing module, and a qualitative and quantitative analysis module that are electrically connected in sequence, and is used to perform data processing on the information of the spectrum and the image; The light source device comprises five light sources, and the five light sources are evenly arranged along a direction perpendicular to the direction in which the light sources emit light; The five light sources include a pulsed solid laser light source, a visible broadband light source, a continuous green light source, a helium-neon laser light source and an infrared broadband light source; wherein the pulsed solid laser light source is used for the laser induced breakdown spectroscopy experiment; the continuous green light source and the helium-neon laser light source are both used for the Raman spectroscopy experiment; the visible broadband light source and the infrared broadband light source are both used for the reflection spectroscopy experiment and the transmission spectroscopy experiment; The light source device further comprises a frequency doubling crystal module, which is arranged close to the corresponding light source and is used to adjust the wavelength of the light source; The optical path adjustment device includes a beam expander, an aperture and a zoom lens group, and the light passes through the beam expander, the aperture and the zoom lens group in sequence and is emitted to the sample stage; wherein the beam expander is used to change the spot size of the light, the aperture is used to limit the field size of the light; the zoom lens group is used to adjust the focal length of the light; The zoom lens group is movably arranged on the platform via a first guide rail, the extension direction of the first guide rail is the same as the direction of the light in the optical path adjustment device, and the extension direction of the optical path adjustment device is perpendicular to the extension direction of the light source device; the distance between the zoom lens group and the aperture and the beam expander is adjusted by relative movement of the first guide rail on the platform to adjust the focal length of the light.

2. The modular multi-spectral experimental teaching system according to claim 1 is characterized in that: The light source device comprises a first optical mirror and a plurality of second optical mirrors, wherein the first optical mirror is arranged close to the light path adjusting device and is located on the light path of the light emitted by one of the light sources, and all the second optical mirrors are located between the light source and the first optical mirror, and are used to reflect the light emitted by all the light sources to the first optical mirror, and the first optical mirror reflects the light to the light path adjusting device; All of the second optical lenses are detachable optical lenses.

3. The modular multi-spectral experimental teaching system according to claim 1 or 2, characterized in that: It also includes a third optical mirror, which is located between the optical path adjustment device and the sample stage and is used to reflect the light to the sample stage; the extension direction of the light from the third optical mirror to the sample stage is parallel to and opposite to the extension direction of the light in the light source device; The third optical mirror is a dichroic mirror.

4. The modular multi-spectral experimental teaching system according to claim 3 is characterized in that: It also includes an image acquisition device for recording or observing the spectrum and image of the sample stage, wherein the acquisition end of the image acquisition device faces the sample stage; The image acquisition device is located on a side of the third optical mirror away from the sample stage, or the image acquisition device is located on a peripheral side of the sample stage.

5. The modular multi-spectral experimental teaching system according to claim 4 is characterized in that: A rotating disk is provided on the platform; The collecting device includes an optical fiber collecting lens and a plurality of sensors, and both are arranged on the rotating disk. The optical fiber collecting lens and the plurality of sensors are both facing the sample stage, and the optical fiber collecting lens and the plurality of sensors are arranged in a ring-shaped interval.

6. The modular multi-spectral experimental teaching system according to claim 5, characterized in that: The collecting device is located on a side of the sample stage close to the optical path adjusting device. And / or, the collecting device further includes a fourth optical mirror, wherein the fourth optical mirror is located between the third optical mirror and the sample stage, and the fourth optical mirror reflects the light reflected by the third optical mirror to the optical fiber collecting lens.

7. The modular multi-spectral experimental teaching system according to claim 1 or 2, characterized in that: The collection device also includes a spectrometer and a signal acquisition circuit. The spectrometer and the signal acquisition circuit are both electrically connected to the data processing device. The spectrometer and the signal acquisition circuit acquire the spectrum and image information and send it to the data processing device.

8. A method for using a modular multispectral experimental teaching system, characterized in that: Used for the modular multi-spectral experimental teaching system according to any one of claims 1 to 7, the method of use comprises: Controlling the light source device to generate light, the light is sequentially emitted to the sample stage through the light path adjustment device, and forms a spectrum and an image on the sample stage; Controlling the collection device to obtain spectrum and image information; The standardization module of the control data processing device performs standardization processing on the spectrum and image information, and the standardization processing includes: Obtaining any number of first instructions, and performing standardization processing on spectrum and image information according to the first instructions; The preprocessing module of the data processing device is controlled to preprocess the information after the standardization process, and the preprocessing includes: Obtain any number of second instructions, and pre-process the standardized information according to the second instructions; The qualitative and quantitative analysis module of the data processing device is controlled to perform qualitative and quantitative analysis on the preprocessed information, wherein the qualitative and quantitative analysis includes: Obtaining any number of third instructions, and performing qualitative and quantitative analysis on the preprocessed information according to the third instructions; The first instruction, the second instruction and the third instruction are instructions stored in the data processing device and / or instructions input by a user.

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