Double-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence

Abstract

The utility model relates to the technical field of stone type judgment devices, in particular to a double-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence. According to the utility model, two technologies of laser-induced breakdown spectroscopy and laser-induced fluorescence are combined. The LIBS technology can be used for analyzing the element composition in the calculus, and the LIF technology can be used for detecting the organic components in the calculus. The two kinds of signals are collected through the multi-channel spectrometer and are comprehensively analyzed through the analysis terminal, and compared with a single technology, more comprehensive stone information can be obtained, so that the accuracy of stone type analysis is effectively improved. According to the multi-technology fusion mode, richer data support is provided for accurate judgment of the calculus type, clinicians can know the characteristics of the calculus more accurately, and a more appropriate treatment scheme is formulated.

Description

Technical Field

[0001] This utility model relates to the technical field of stone type identification devices, specifically a dual-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence. Background Technology

[0002] Urinary tract stones and other diseases are quite common in clinical practice. Accurately identifying the type of stone is crucial for developing personalized treatment plans and preventing stone recurrence. Current stone analysis methods include laser-induced breakdown spectroscopy (LIBS) and laser-induced fluorescence (LIF).

[0003] LIBS technology can analyze the elemental composition of kidney stones, while laser-induced fluorescence (LIF) technology can detect the organic components within them. Both technologies have their advantages and can help determine the type of kidney stone based on the analysis results. However, they operate independently in practice, leading to limitations in their reliance on a single technique for accurate and comprehensive stone identification. Therefore, this issue urgently needs to be addressed. Utility Model Content

[0004] To avoid and overcome the technical problems existing in the prior art, this invention provides a dual-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence. This invention effectively improves the accuracy of stone type analysis by combining these two technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence includes a continuous laser that emits continuous laser light to the stone irradiation point, a fluorescence probe that collects the fluorescence signal generated by the continuous laser excitation of the stone, a pulse laser that emits pulsed laser light to the stone, a pulse probe that collects the pulse signal generated by the pulse laser excitation of the stone, and a multi-channel spectrometer that collects fluorescence and pulse signals. The output end of the multi-channel spectrometer is equipped with an analysis terminal that can analyze the fluorescence and pulse signals to determine the stone type.

[0007] As a further embodiment of this invention: the laser propagation path of the continuous laser is sequentially equipped with a first flat beam expander for diffusing the laser, a dichroic mirror for eliminating mutual interference between the continuous laser and the fluorescence signal, and a first beam focuser for focusing the laser.

[0008] As a further improvement of this invention, the propagation path of the fluorescent signal and the propagation path of the continuous laser form a bidirectional co-optical path.

[0009] As a further embodiment of this utility model: the fluorescence probe includes a first fluorescence beam expander connected to the output end of a continuous laser and a first fluorescence beam gatherer located on the light propagation path of the first fluorescence beam expander, and the first beam expander is installed on the light propagation path of the first fluorescence beam gatherer.

[0010] The fluorescence probe also includes a first fluorescence reflector mounted on the reverse light propagation path of the first fluorescence beam-focusing mirror, a second fluorescence reflector mounted on the light propagation path of the first fluorescence reflector, a second fluorescence beam-focusing mirror mounted on the light propagation path of the second fluorescence reflector, and the output light of the second fluorescence beam-focusing mirror is input into the multi-channel spectrometer.

[0011] As a further improvement of this invention: a second beam expander, a laser reflector, and a second beam gatherer are arranged sequentially along the propagation path of the pulsed laser.

[0012] As a further improvement of this invention, the structure of the pulse probe is the same as that of the fluorescence probe.

[0013] As a further improvement of this invention: the analysis terminal is a computer, which stores analysis criteria that can be used to analyze the type of stones based on fluorescence signals and pulse signals.

[0014] As a further improvement of this invention: the stone is placed on a three-degree-of-freedom moving platform that can move along the three coordinate axes in three-dimensional space.

[0015] As a further improvement of this utility model, it also includes a camera that can take pictures of the stones to determine the location of the irradiation point of the stones, and the camera can send the shooting results to the control terminal.

[0016] As a further improvement of this invention, the control terminal can control the three-degree-of-freedom mobile platform in real time based on the camera's shooting results.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This invention combines two technologies: laser-induced breakdown spectroscopy (LIBS, corresponding to the pulsed signal excited by a pulsed laser) and laser-induced fluorescence (LIF, corresponding to the fluorescence signal excited by a continuous laser). LIBS technology can analyze the elemental composition of stones, while LIF technology can detect the organic components in stones. By collecting these two signals using a multi-channel spectrometer and performing comprehensive analysis at an analysis terminal, more comprehensive stone information can be obtained compared to using a single technology, thereby effectively improving the accuracy of stone type analysis. This multi-technology fusion approach provides richer data support for accurate stone type determination, helping clinicians to more accurately understand the characteristics of stones and formulate more appropriate treatment plans.

[0019] 2. First flat beam expander: A first flat beam expander is installed in the laser propagation path of the continuous laser to diffuse the laser beam. The diffused laser beam can more evenly irradiate the stone, avoiding excessive damage to the stone due to excessive laser concentration. At the same time, it can also cover a larger area, improve the efficiency and uniformity of fluorescence signal excitation, and make the collected fluorescence signal more representative of the overall characteristics of the stone.

[0020] 3. Dichroic mirrors can eliminate mutual interference between continuous laser and fluorescence signals. Since continuous laser and fluorescence signals have different wavelengths, dichroic mirrors can selectively reflect or transmit light according to the wavelength, guiding the continuous laser towards the stone while allowing the fluorescence signal to pass through and be collected smoothly, ensuring the purity of the fluorescence signal and further improving the accuracy of the analysis.

[0021] 4. The first focusing lens focuses the laser, concentrating its energy on the irradiation point of the stone. This enhances the interaction between the laser and the stone, increasing the intensity of the fluorescence signal and facilitating more accurate signal collection by the subsequent fluorescence probe. The propagation path of the fluorescence signal and the continuous laser forms a bidirectional co-optical path, meaning that laser emission and fluorescence signal collection can be achieved within the same optical system. This design simplifies the optical structure, reduces the number of optical components, and lowers the cost and complexity of the device. Simultaneously, the bidirectional co-optical path reduces signal loss during transmission because the fluorescence signal returns along the same path as the laser, avoiding signal attenuation caused by additional optical path design and improving the efficiency and accuracy of signal collection. The first fluorescence beam expander and the first fluorescence beam focusing lens: The first fluorescence beam expander is connected to the output of the continuous laser to perform preliminary beam expansion of the fluorescence signal, making the signal propagate more uniformly. The first fluorescence beam focusing lens then collects and focuses the expanded fluorescence signal, increasing its intensity and concentration for subsequent processing and analysis. First and Second Fluorescence Mirrors: These mirrors are used to change the propagation direction of the fluorescence signal, guiding it to a suitable location for further processing. By appropriately setting the angle and position of the mirrors, the optical path layout can be optimized, ensuring the fluorescence signal can be smoothly transmitted to the second fluorescence focusing mirror. Second Fluorescence Focusing Mirror: The second fluorescence focusing mirror further focuses the processed fluorescence signal and inputs it into the multichannel spectrometer. This ensures the fluorescence signal enters the spectrometer in optimal condition for analysis, improving the accuracy and reliability of the analysis.

[0022] 5. A second beam expander, a laser reflector, and a second beam converger are sequentially arranged along the propagation path of the pulsed laser. The second beam expander expands the pulsed laser beam, ensuring more uniform illumination of the stone and preventing damage from excessively high local energy. The laser reflector changes the propagation direction of the pulsed laser, allowing it to accurately target the designated location on the stone. The second beam converger focuses the expanded pulsed laser beam onto the stone, enhancing the interaction between the laser and the stone, increasing plasma generation efficiency, and thus obtaining a clearer and more accurate pulse signal, which is beneficial for analyzing the elemental composition of the stone.

[0023] 6. The pulse probe and the fluorescence probe have the same structure, which means that a unified standard and process can be used to produce both types of probes during the design and manufacturing of the device, reducing production complexity and cost. At the same time, the identical structure facilitates device maintenance and debugging, reducing maintenance difficulties caused by differences in probe structure. Furthermore, probes with the same structure have consistent performance, ensuring similar stability and accuracy in the collection and processing of pulse and fluorescence signals.

[0024] 7. The analysis terminal is a computer, which stores analytical criteria for identifying stone types based on fluorescence and pulse signals. The computer possesses powerful computing and data processing capabilities, enabling rapid and accurate analysis of fluorescence and pulse signals collected by the multi-channel spectrometer. The analytical criteria stored in the computer are based on extensive experimental data and clinical experience, accurately determining the type of stone based on signal characteristics. This computer-based analysis method improves the efficiency and accuracy of the analysis, while also facilitating the storage and management of the results.

[0025] 8. The stone is placed on a three-degree-of-freedom (DOF) moving platform that can move along the three coordinate axes in three-dimensional space. This design allows the stone to move flexibly in three-dimensional space, facilitating position adjustment and ensuring the laser accurately irradiates different parts of the stone. For irregularly shaped stones, the three-DOF moving platform allows selection of the optimal irradiation point, improving signal collection quality and analysis accuracy. Furthermore, this moving platform can automate operation, improving analysis efficiency and repeatability.

[0026] 9. The device also includes a camera capable of photographing the stones to determine the location of the irradiation point, and the camera can send the image results to a control terminal. The camera can intuitively acquire image information of the stones, and through image analysis, the shape, size, and location of the stones can be accurately determined, thereby identifying the optimal irradiation point. Sending the image results to the control terminal provides a basis for subsequent automated operation, enabling the device to automatically adjust the laser irradiation position according to the actual situation of the stones, improving the accuracy and efficiency of the analysis.

[0027] 10. The control terminal can control the three-degree-of-freedom moving platform in real time based on the camera's image capture results. This real-time control mechanism allows the device to dynamically adjust the position of the stones according to their actual condition, ensuring that the laser always accurately irradiates the optimal irradiation point. Compared to manual adjustment, real-time control is more accurate and faster, improving the efficiency and accuracy of the analysis. Simultaneously, this automated control method reduces interference from human factors, improving the reliability and repeatability of the analysis results. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of the fluorescence probe in this utility model.

[0030] In the diagram: 1. Continuous laser; 2. Fluorescence probe; 21. First fluorescence beam expander; 22. First fluorescence beam gatherer; 23. Second fluorescence beam gatherer; 24. First fluorescence reflector; 25. Second fluorescence reflector; 3. Fiber optic coupler; 4. Multichannel spectrometer; 5. Pulsed laser; 6. Pulsed probe; 7. Analysis terminal; 8. First beam expander; 9. Dichroic mirror; 10. Laser reflector; 11. Second beam expander; 12. Laser reflector; 13. First beam gatherer; 14. Fiber optic cable; 15. Stone; 16. Camera; 17. Third beam gatherer. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1 and Figure 2 The purpose of this invention is to provide a dual-spectrum stone type analysis device based on laser-induced breakdown and laser-induced fluorescence. By combining LIBS and LIF technologies, the accuracy of stone type analysis is effectively improved, while the device is automated and operates efficiently.

[0033] I. Components

[0034] This invention relates to a dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence, which mainly includes the following components:

[0035] Continuous laser 1: This emits a continuous laser beam towards the irradiation point of the stone 15 to excite the stone 15 to produce a fluorescence signal. The wavelength and power of the continuous laser can be adjusted according to the characteristics of different stones 15 to ensure that the organic components in the stone 15 can be effectively excited to emit fluorescence.

[0036] Fluorescence probe 2: Used to collect the fluorescence signal generated by the stone 15 being excited by the continuous laser 1. The specific structure includes a first fluorescence beam expander 21 connected to the output end of the continuous laser 1 and a first fluorescence beam gatherer 22 located on the light propagation path of the first fluorescence beam expander 21, with the first beam expander 21 mounted on the light propagation path of the first fluorescence beam gatherer 22; it also includes a first fluorescence reflector 24 mounted on the reverse light propagation path of the first fluorescence beam gatherer 22, a second fluorescence reflector 25 mounted on the light propagation path of the first fluorescence reflector 24, a second fluorescence beam gatherer 23 mounted on the light propagation path of the second fluorescence reflector 25, and the output light of the second fluorescence beam gatherer 23 input to the multi-channel spectrometer 4.

[0037] Fiber optic coupler 3: Installed between fluorescence probe 2 and multichannel spectrometer 4, it efficiently and stably transmits the fluorescence signal collected by fluorescence probe 2 to multichannel spectrometer 4. It minimizes signal loss during transmission, ensuring that the spectrometer receives a complete and accurate fluorescence signal, providing reliable data for subsequent analysis.

[0038] Pulsed laser 5: Emits pulsed laser light towards stone 15 to excite stone 15 to generate plasma, thereby generating the pulsed LIBS signal. The pulsed laser has the characteristics of high energy and short pulse, which can instantly cause the material on the surface of stone 15 to form a plasma state.

[0039] Pulse probe 6: Collects the pulse signal generated by the pulsed laser 5 when the stone 15 is excited. Its structure is the same as that of the fluorescence probe 2, which facilitates production, maintenance and debugging, while ensuring the consistency of signal collection.

[0040] Multichannel spectrometer 4: Collects fluorescence and pulse signals, and performs preliminary processing and analysis on these signals. It can convert received optical signals into electrical signals, and separate and measure them according to the wavelength of the light to acquire spectral data.

[0041] Analysis Terminal 7: An analysis terminal 7, typically a computer, is installed at the output end of the multi-channel spectrometer 4. The computer stores analytical criteria that allow for the analysis of the type of stone 15 based on fluorescence and pulse signals. The analysis terminal 7 determines the type of stone 15 based on the data provided by the spectrometer and the preset analytical criteria.

[0042] First beam expander 8: Installed on the laser propagation path of continuous laser 1, it diffuses the continuous laser, so that the laser shines more evenly on the stone 15, avoiding damage to the stone 15 due to excessive local energy, and at the same time improving the efficiency and uniformity of fluorescence signal excitation.

[0043] Dichroic mirror 9: Also located in the laser propagation path of continuous laser 1, it can eliminate mutual interference between continuous laser and fluorescence signal. It selectively reflects or transmits light according to wavelength, guiding continuous laser to stone 15 while allowing fluorescence signal to pass through and be collected smoothly.

[0044] First focusing lens 13: Focuses the continuous laser, so that the laser energy acts more concentratedly on the irradiation point of the stone 15, enhances the interaction between the laser and the stone 15, and increases the intensity of the fluorescence signal.

[0045] Second beam expander 11: Installed in the propagation path of the pulsed laser to expand the pulsed laser beam, so that the pulsed laser can irradiate the stone 15 more evenly.

[0046] Laser reflector 10: Changes the propagation direction of the pulsed laser to ensure that the pulsed laser accurately irradiates the designated location of the stone 15.

[0047] The second beam-focusing mirror focuses the expanded pulsed laser onto stone 15, improving the plasma generation efficiency.

[0048] Three-degree-of-freedom moving platform: Stone 15 is placed on a three-degree-of-freedom moving platform that can move along the three coordinate axes in three-dimensional space. The position of stone 15 can be flexibly adjusted through this platform, so that the laser can accurately irradiate different parts of stone 15. Especially for irregularly shaped stones 15, the optimal irradiation point can be selected.

[0049] Camera 16: It can take pictures of the stone 15 to determine the location of the irradiation point of the stone 15, and the camera 16 can send the shooting results to the analysis terminal 7. The camera 16 can intuitively obtain image information of the stone 15, providing a basis for determining the optimal irradiation point. During the image shooting process, the image will also pass through the third focusing lens 17 before entering the camera 16.

[0050] Analysis terminal 7: It can control the three-degree-of-freedom moving platform in real time according to the shooting results of camera 16, realize the dynamic adjustment of the position of stone 15, and ensure that the laser always accurately irradiates the optimal irradiation point.

[0051] II. Coordination between components

[0052] The components work closely together to achieve accurate analysis of type 15 stones. Along the light propagation path, optical fibers 1414 are used at corresponding positions for light coupling to facilitate light propagation. The specific coordination is as follows:

[0053] The continuous laser 1, fluorescence probe 2, and related optical components work together as follows: The continuous laser 1 emits a continuous laser beam, which is diffused by the first flat beam expander, separated from interference by the dichroic mirror 9, and focused by the first beam converger before illuminating the stone 15. The stone 15 is excited to generate a fluorescence signal, which returns along the bidirectional optical path formed by the propagation path of the continuous laser. The signal passes sequentially through the first fluorescence beam expander 21, the first fluorescence beam converger 22, the first fluorescence reflector 24, the second fluorescence reflector 25, and the second fluorescence beam converger 23 before finally being input into the multi-channel spectrometer 4.

[0054] The pulsed laser 5 works in conjunction with the pulsed probe 6 and related optical components: The pulsed laser 5 emits a pulsed laser beam, which is expanded by the second beam expander 11, its direction is changed by the laser reflector 10, and it is focused by the second beam focusing mirror before irradiating the stone 15. The stone 15 is excited to generate plasma and emits a pulsed LIBS signal. The pulsed probe 6 collects the pulsed signal according to the same structure and principle as the fluorescence probe 2 and inputs it into the multichannel spectrometer 4.

[0055] The camera 16, analysis terminal 7, and three-degree-of-freedom moving platform work together: The camera 16 takes pictures of the stone 15 and sends the results to the analysis terminal 7. The analysis terminal 7 analyzes the shape, size, and position of the stone 15 based on the images, determines the optimal irradiation point, and controls the three-degree-of-freedom moving platform in real time to adjust the position of the stone 15 so that the laser accurately irradiates that point.

[0056] The multi-channel spectrometer 4 and the analysis terminal 7 work together: The multi-channel spectrometer 4 collects fluorescence signals and pulse signals, performs preliminary processing and analysis on them, and transmits the processed data to the analysis terminal 7. The analysis terminal 7 performs comprehensive analysis on these data according to preset analysis criteria to determine the type of stone 15.

[0057] III. Specific Work Process

[0058] Preparation phase:

[0059] The stone sample 15 was placed on a three-degree-of-freedom moving platform.

[0060] Turn on camera 16, take a picture of stone 15, and send the picture results to analysis terminal 7.

[0061] The analysis terminal 7 analyzes the position and shape of the stone 15 based on the imaging results, determines the optimal irradiation point, and controls the three-degree-of-freedom moving platform to move the stone 15 to the corresponding position.

[0062] Signal excitation and collection phase:

[0063] A continuous laser 1 emits a continuous laser beam, which, after passing through a first planar beam expander, a dichroic mirror 9, and a first focusing mirror, illuminates the stone 15. The stone 15 is excited to generate a fluorescence signal, which is collected by a fluorescence probe 2 and transmitted to a multichannel spectrometer 4 via an optical fiber coupler 3.

[0064] The pulsed laser 5 emits a pulsed laser beam, which, after passing through the second beam expander 11, the laser reflector 10, and the second beam converger, illuminates the stone 15. The stone 15 is excited to generate plasma, emitting a pulsed LIBS signal. The pulsed signal is collected by the pulse probe 6 and transmitted to the multichannel spectrometer 4.

[0065] Signal analysis stage:

[0066] The multichannel spectrometer 4 performs preliminary processing and analysis on the collected fluorescence and pulse signals, and transmits the processed data to the analysis terminal 7.

[0067] The analysis terminal 7 performs a comprehensive analysis of the fluorescence signal and pulse signal according to the preset analysis criteria, determines the type of stone 15, and outputs the analysis results.

[0068] Subsequent processing stage:

[0069] The analysis results can be used for clinical diagnosis and treatment planning.

[0070] If analysis of other parts of the stone 15 is required, the analysis terminal 7 can adjust the position of the three-degree-of-freedom moving platform again according to the shooting results of the camera 16, and repeat the above signal excitation, collection and analysis process.

[0071] This invention combines laser-induced breakdown spectroscopy (LIBS) and laser-induced fluorescence (LIF) technologies to simultaneously acquire elemental and organic composition information of stone 15, effectively improving the accuracy and comprehensiveness of stone 15 type analysis. The combination of a three-degree-of-freedom moving platform, camera 16, and analysis terminal 7 enables automatic adjustment of stone 15 position and selection of the optimal irradiation point, improving analytical efficiency and accuracy. Furthermore, the device features a rationally designed optical structure, tight coordination between components, and simple operation, exhibiting a high degree of automation and making it widely applicable in clinical stone 15 analysis and other fields.

[0072] IV. Examples

[0073] 1. Equipment installation and commissioning

[0074] Install all components according to the design requirements, ensuring accurate positioning and secure connections. Adjust the parameters of the continuous laser 1 and pulsed laser 5, such as wavelength, power, and pulse frequency, to meet the requirements for analyzing stone 15. Adjust the position and angle of the optical elements to ensure the laser accurately illuminates stone 15 and that the fluorescence and pulse signals are successfully collected and transmitted to the multichannel spectrometer 4.

[0075] 2. Stone 15 Sample Processing

[0076] The sample of stone 15 to be analyzed was cleaned to remove surface impurities and dirt to reduce interference with the analytical results. Then, the sample of stone 15 was fixed on a three-degree-of-freedom moving platform to ensure its positional stability during the analysis.

[0077] 3. Analysis Operation

[0078] Turn on camera 16, take an image of stone 15, and transmit the image to analysis terminal 7.

[0079] Based on the image analysis results, the analysis terminal 7 controls the three-degree-of-freedom moving platform to adjust the position of the stone 15 so that the laser irradiates the optimal irradiation point.

[0080] The continuous laser 1 and the pulsed laser 5 are turned on in sequence to excite the stone 15 to generate fluorescence and pulse signals.

[0081] Fluorescence probe 2 and pulse probe 6 collect fluorescence signals and pulse signals respectively, and transmit them to multichannel spectrometer 4.

[0082] The multi-channel spectrometer 4 processes and analyzes the signal and transmits the processed data to the analysis terminal 7.

[0083] The analysis terminal 7 determines the type of stone 15 according to the preset analysis criteria and outputs the analysis results.

[0084] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence, characterized in that, It includes a continuous laser (1) that can emit continuous laser to the irradiation point of the stone (15), a fluorescence probe (2) that collects the fluorescence signal generated by the stone (15) when excited by the continuous laser (1), a pulse laser (5) that emits pulse laser to the stone (15), a pulse probe (6) that collects the pulse signal generated by the stone (15) when excited by the pulse laser (5), and a multi-channel spectrometer (4) that collects fluorescence signal and pulse signal. The output end of the multi-channel spectrometer (4) is equipped with an analysis terminal (7) that can analyze the fluorescence signal and pulse signal to determine the type of stone (15).

2. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 1, characterized in that, The laser propagation path of the continuous laser (1) is sequentially equipped with a first flat beam expander for diffusing the laser, a dichroic mirror (9) for eliminating mutual interference between the continuous laser and the fluorescence signal, and a first beam focuser for focusing the laser.

3. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 2, characterized in that, The propagation path of the fluorescent signal and the propagation path of the continuous laser form a bidirectional co-optical path.

4. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 3, characterized in that, The fluorescence probe (2) includes a first fluorescence beam expander (21) connected to the output end of the continuous laser (1) and a first fluorescence beam gatherer (22) located on the light propagation path of the first fluorescence beam expander (21), and the first beam expander (8) is installed on the light propagation path of the first fluorescence beam gatherer (22); The fluorescence probe (2) also includes a first fluorescence reflector (24) installed on the reverse light propagation path of the first fluorescence beam (22), a second fluorescence reflector (25) installed on the light propagation path of the first fluorescence reflector (24), a second fluorescence beam (23) installed on the light propagation path of the second fluorescence reflector (25), and the output light of the second fluorescence beam (23) is input into the multi-channel spectrometer (4).

5. A dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to any one of claims 1-4, characterized in that, The propagation path of the pulsed laser is arranged sequentially with a second beam expander (11), a laser reflector (10), and a second beam gatherer.

6. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 5, characterized in that, The structure of the pulse probe (6) is the same as that of the fluorescence probe (2).

7. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 6, characterized in that, The analysis terminal (7) is a computer, which stores analysis criteria that can be used to analyze the type of stone (15) based on fluorescence signals and pulse signals.

8. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 7, characterized in that, The stone (15) is placed on a three-degree-of-freedom moving platform that can move along the three coordinate axes of three-dimensional space.

9. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 8, characterized in that, It also includes a camera (16) that can take pictures of the stones (15) to determine the location of the irradiation point of the stones (15), and the camera (16) can send the shooting results to the control terminal.

10. The dual-spectral stone type analysis device based on laser-induced breakdown and laser-induced fluorescence according to claim 9, characterized in that, The control terminal can control the three-degree-of-freedom mobile platform in real time based on the shooting results of the camera (16).

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