A long-distance autonomous multi-state spectral detection system

Abstract

The present invention discloses a long-distance autonomous multi-state spectrum detection system, the system includes a high-energy pulse laser, a combined lens, and a spectrum analyzer; the high-energy pulse laser is used to generate high-energy laser, and aim the high-energy laser at a multi-state sample to be tested at a distance, so that it produces a high-temperature plasma state, and then excites the characteristic signal light wave of the multi-state material; the combined lens is used to receive the characteristic signal light wave radiated by the multi-state sample to be tested at a distance in the high-temperature plasma state, and transmit it to the spectrum analyzer; the spectrum analyzer is used to analyze and identify the characteristic signal light wave radiated by the multi-state sample to be tested. The present invention uses a high-energy laser emitted by a high-energy pulse laser to excite a sample located at a distance to produce a high-temperature plasma state and emit a characteristic signal spectrum. The characteristic signal spectrum is subjected to a series of processing by the combined lens and then incident on the spectrum analyzer, thereby realizing a precise measurement of the multi-state spectrum.

Description

Technical Field

[0001] The present invention relates to the technical field of laser induced breakdown multi-state spectrum measurement, and more specifically, to a long-distance autonomous multi-state spectrum detection system. Background Art

[0002] Since the birth of high-energy lasers, due to their superior optical properties, more and more people have known about them, and more applications have been discovered, especially in the measurement field that is sensitive to high-tech. Laser spectroscopy has been widely used in the detection and analysis of various substances. The depth and breadth of its application have reached an unprecedented stage, greatly promoting the development of a new generation of industries.

[0003] With the increase in the number of multi-state material components and the need for long-distance detection, rapid spectral acquisition and analysis has become a core research topic in this field, which requires novel designs and software algorithm technologies for the interaction model between light and matter and the acquisition and processing of optical signals. In existing spectral measurement technologies, ordinary mercury lamps or xenon lamps are usually used as excitation light sources. Such equipment can only excite weak signals and cannot detect characteristic spectral peaks (wavelength or energy information) emitted from multiple states. This defect affects researchers' clear physical understanding of the distribution of elements inside matter. Summary of the invention

[0004] In order to solve the problems of the above-mentioned deficiencies and shortcomings of the prior art, the present invention provides a long-distance autonomous multi-state spectral detection system, which measures the characteristic spectral peaks emitted from multiple states of matter, thereby improving the R&D personnel's ability to accurately detect and quantitatively analyze the distribution of elements inside substances.

[0005] In order to achieve the above-mentioned purpose of the present invention, the technical scheme adopted is as follows:

[0006] A long-distance autonomous multi-state spectrum detection system, the system comprising a high-energy pulse laser, a combined lens, and a spectrum analyzer;

[0007] The high-energy pulse laser is used to generate high-energy laser light, and aim the high-energy laser light at a multi-state sample to be tested at a distance, so that it generates a high-temperature plasma state, thereby exciting characteristic signal light waves of the multi-state material;

[0008] The combined lens is used to receive characteristic signal light waves radiated by a multi-state sample to be tested at a distance in a high-temperature plasma state, and transmit the characteristic signal light waves to the spectrum analyzer;

[0009] The spectrum analyzer is used to analyze and identify the characteristic signal light waves radiated by the multi-state sample to be tested.

[0010] Preferably, the system further comprises a first focusing lens;

[0011] The first focusing lens is used to focus the high-energy laser and direct the focused high-energy laser toward the multi-state sample to be tested at a distance.

[0012] Furthermore, the combined lens comprises a second focusing lens, a focus aperture plate, a compression collimating focusing lens, and a third focusing lens which are arranged in sequence at the same level;

[0013] The second focusing lens is used to receive characteristic signal light waves radiated by high-temperature plasma formed by the multi-state sample to be tested under the excitation of high-energy laser;

[0014] The focal aperture plate is used to receive the focal point of the characteristic signal light wave focused by the second focusing lens;

[0015] The compression collimating focusing lens is used to focus the characteristic signal light wave through the focal hole plate and convert it into a parallel light beam with a small spot diameter after compression;

[0016] The third focusing lens is used to focus the parallel light beam output by the compression collimating focusing lens and then input it into the spectrum analyzer.

[0017] Furthermore, the system further comprises

[0018] An optical beam splitter, which is disposed between the compression collimating focusing lens and the third focusing lens and is used to transmit a portion of the parallel light beam and reflect another portion of the parallel light beam into the imaging device;

[0019] The imaging device is used for imaging the parallel light beam reflected by the optical beam splitter.

[0020] Furthermore, the imaging device includes an imaging focusing lens and an imaging camera;

[0021] The imaging focusing lens is used to perform imaging focusing on the parallel light beam reflected by the optical beam splitter;

[0022] The imaging camera is used to image the parallel light beam after imaging focusing.

[0023] Preferably, the spectrum analyzer establishes a database of spectra of various physical states, uses clock sequence to autonomously identify and analyze characteristic signal light waves, and completes identification and quantitative detection of internal elements of the multi-physical state sample to be tested through fitting of the emission spectrum model.

[0024] Furthermore, the first focusing lens is a long-distance focusing lens.

[0025] Furthermore, the second focusing lens is a large-aperture collection focusing lens.

[0026] Furthermore, the spectrum analyzer detects wavelengths in the range of 200 to 1600 nm.

[0027] Furthermore, the imaging camera adopts a 2-megapixel COMS imager and uses an IR / GR anti-reflection film as an imaging lens.

[0028] The beneficial effects of the present invention are as follows:

[0029] The long-distance autonomous multi-state spectrum detection system described in the present invention uses high-energy laser emitted by a high-energy pulse laser to excite a sample located far away to produce a high-temperature plasma state and emit a characteristic signal spectrum. The characteristic signal spectrum is subjected to a series of processing by a combined lens and then incident on a spectrometer to achieve precise measurement of the multi-state spectrum. During the measurement process, the system can not only provide multi-state characteristic spectrum peak information, but also provide information on various elements and component contents inside the material.

[0030] The long-distance autonomous multi-state spectrum detection system described in the present invention also provides the time lifetimes of different characteristic emission peaks in different substances through rapid time-resolved signal acquisition, providing researchers with a wealth of means and methods for element identification and composition analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the long-distance autonomous multi-state spectral detection system described in Example 1.

[0032] Figure 2 It is a schematic diagram of the long-distance autonomous multi-state spectral detection system described in Example 2.

[0033] Figure 3 It is a schematic diagram of the long-distance autonomous multi-state spectral detection system described in Example 3.

[0034] In the figure, 1-high energy pulse laser; 2-multi-state sample to be tested; 3-second focusing lens, 4-focus aperture plate; 5-compression collimating focusing lens; 6-third focusing lens; 7-spectrum analyzer; 8-first focusing lens; 9-optical beam splitter; 10-imaging focusing lens; 11-imaging camera. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figure 1As shown, a long-distance autonomous multi-state spectrum detection system, the system includes a high-energy pulse laser 1, a combined lens, and a spectrum analyzer 7;

[0038] The high-energy pulse laser 1 is used to generate high-energy laser light, and aim the high-energy laser light at a multi-state sample 2 to be tested at a distance, so that it generates a high-temperature plasma state, thereby exciting characteristic signal light waves of the multi-state material;

[0039] In a specific embodiment, the combined lens is used to receive characteristic signal light waves radiated by the multi-state sample 2 to be tested in a high-temperature plasma state at a distance, and transmit them to the spectrum analyzer 7;

[0040] The spectrum analyzer 7 is used to analyze and identify the characteristic signal light waves radiated by the multi-state sample 2 to be tested.

[0041] The spectrum analyzer 7 establishes a database of multiple physical state spectra, uses clock sequence to complete autonomous recognition and analysis of characteristic signal light waves, and completes identification and quantitative detection of internal elements of the multi-physical state sample 2 to be tested through fitting of the emission spectrum model.

[0042] The spectrum analyzer 7 detects wavelengths in the range of 200 to 1600 nm and has a wavelength resolution accuracy of 0.1 nanometer.

[0043] In a specific embodiment, the combined lens comprises a series of uncoated combined lenses, and the characteristic spectral signals emitted by the distant sample to be tested are focused and collected by the combined lenses.

[0044] The combined lens comprises a second focusing lens 3, a focal aperture plate 4, a compression collimating focusing lens 5, and a third focusing lens 6 which are arranged in sequence at the same level;

[0045] The second focusing lens 3 is used to receive characteristic signal light waves radiated by the high-temperature plasma formed by the multi-state sample 2 to be tested under the excitation of high-energy laser;

[0046] The focus aperture plate 4 is used to receive the focus of the characteristic signal light wave focused by the second focusing lens 3;

[0047] The compression collimating focusing lens 5 is used to convert the characteristic signal light wave into a parallel light beam with a small spot diameter after focusing through the focal aperture plate 4;

[0048] The third focusing lens 6 is used to focus the parallel light beam output by the compression collimating focusing lens 5 and then input the parallel light beam into the spectrum analyzer 7 .

[0049] Example 2

[0050] like Figure 2 As shown, a long-distance autonomous multi-state spectrum detection system, the system includes a high-energy pulse laser 1, a combined lens, and a spectrum analyzer 7;

[0051] The high-energy pulse laser 1 is used to generate high-energy laser light, and aim the high-energy laser light at a multi-state sample 2 to be tested at a distance, so that it generates a high-temperature plasma state, thereby exciting characteristic signal light waves of the multi-state material;

[0052] In a specific embodiment, the combined lens is used to receive characteristic signal light waves radiated by the multi-state sample 2 to be tested in a high-temperature plasma state at a distance, and transmit them to the spectrum analyzer 7;

[0053] The spectrum analyzer 7 is used to analyze and identify the characteristic signal light waves radiated by the multi-state sample 2 to be tested.

[0054] The spectrum analyzer 7 establishes a database of multiple physical state spectra, uses clock sequence to complete autonomous identification and analysis of characteristic signal light waves, and completes identification and quantitative detection of internal elements of the multi-physical state sample 2 through fitting of the emission spectrum model. The spectrum analyzer 7 detects wavelengths in the range of 200 to 1600 nm.

[0055] In a specific embodiment, the combined lens comprises a second focusing lens 3, a focal aperture plate 4, a compression collimating focusing lens 5, and a third focusing lens 6 arranged in sequence at the same level;

[0056] The second focusing lens 3 is used to receive characteristic signal light waves radiated by the high-temperature plasma formed by the multi-state sample 2 to be tested under the excitation of high-energy laser;

[0057] The focus aperture plate 4 is used to receive the focus of the characteristic signal light wave focused by the second focusing lens 3;

[0058] The compression collimating focusing lens 5 is used to convert the characteristic signal light wave into a parallel light beam with a small spot diameter after focusing through the focal aperture plate 4;

[0059] The third focusing lens 6 is used to focus the parallel light beam output by the compression collimating focusing lens 5 and then input the parallel light beam into the spectrum analyzer 7 .

[0060] In a specific embodiment, the system further comprises a first focusing lens 8;

[0061] The first focusing lens 8 is used to focus the high-energy laser and direct the focused high-energy laser toward the multi-state sample 2 to be tested at a distance.

[0062] The first focusing lens 8 described in this embodiment is arranged between the high-energy pulse laser 1 and the multi-state sample 2 to be tested, and is used to focus the high-energy laser generated by the high-energy pulse laser 1 on the multi-state sample 2 to be tested, so that it produces a high-temperature plasma state.

[0063] Example 3

[0064] like Figure 3 As shown, a long-distance autonomous multi-state spectrum detection system, the system includes a high-energy pulse laser 1, a combined lens, and a spectrum analyzer 7;

[0065] The high-energy pulse laser 1 is used to generate high-energy laser light, and aim the high-energy laser light at a multi-state sample 2 to be tested at a distance, so that it generates a high-temperature plasma state, thereby exciting characteristic signal light waves of the multi-state material;

[0066] The combined lens is used to receive characteristic signal light waves radiated by the multi-state sample 2 to be tested in a high-temperature plasma state at a distance, and transmit them to the spectrum analyzer 7;

[0067] The spectrum analyzer 7 is used to analyze and identify the characteristic signal light waves radiated by the multi-state sample 2 to be tested.

[0068] In a specific embodiment, the combined lens comprises a second focusing lens 3, a focal aperture plate 4, a compression collimating focusing lens 5, and a third focusing lens 6 arranged in sequence at the same level;

[0069] The second focusing lens 3 is used to receive characteristic signal light waves radiated by the high-temperature plasma formed by the multi-state sample 2 to be tested under the excitation of high-energy laser;

[0070] The focus aperture plate 4 is used to receive the focus of the characteristic signal light wave focused by the second focusing lens 3;

[0071] The compression collimating focusing lens 5 is used to convert the characteristic signal light wave into a parallel light beam with a small spot diameter after focusing through the focal aperture plate 4;

[0072] The third focusing lens 6 is used to focus the parallel light beam output by the compression collimating focusing lens 5 and then input the parallel light beam into the spectrum analyzer 7 .

[0073] In this embodiment, the second focusing lens 3 is a large-aperture collection focusing lens.

[0074] In a specific embodiment, the system further comprises a first focusing lens 8;

[0075] The first focusing lens 8 is used to focus the high-energy laser and direct the focused high-energy laser toward the multi-state sample 2 to be tested at a distance. In this embodiment, the first focusing lens 8 is a long-distance focusing lens.

[0076] The first focusing lens 8 described in this embodiment is arranged between the high-energy pulse laser 1 and the multi-state sample 2 to be tested, and is used to focus the high-energy laser generated by the high-energy pulse laser 1 on the multi-state sample 2 to be tested, so that it produces a high-temperature plasma state.

[0077] In a specific embodiment, the system further includes

[0078] An optical beam splitter 9, which is disposed between the compression collimating focusing lens 5 and the third focusing lens 6, and is used to transmit a portion of the parallel light beam and reflect another portion of the parallel light beam to the imaging device;

[0079] The imaging device is used to image the parallel light beam reflected by the optical beam splitter 9.

[0080] The imaging device comprises an imaging focusing lens 10 and an imaging camera 11;

[0081] The imaging focusing lens 10 is used to perform imaging focusing on the parallel light beam reflected by the optical beam splitter 9;

[0082] The imaging camera 11 is used to image the parallel light beam after imaging focusing.

[0083] The spectrum analyzer 7 establishes a database of multiple physical state spectra, uses clock sequence to complete autonomous recognition and analysis of characteristic signal light waves, and completes identification and quantitative detection of internal elements of the multi-physical state sample 2 to be tested through fitting of the emission spectrum model.

[0084] The spectrum analyzer 7 detects wavelengths in the range of 200 to 1600 nm.

[0085] The imaging camera 11 adopts a 2-megapixel COMS imager and uses an IR / GR anti-reflection film as an imaging lens.

[0086] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A long-distance autonomous multi-state spectrum detection system, characterized by: The system comprises a high-energy pulse laser (1), a combined lens, and a spectrum analyzer (7); The high-energy pulse laser (1) is used to generate high-energy laser light, and aim the high-energy laser light at a multi-state sample (2) to be tested at a distance, so as to generate a high-temperature plasma state, thereby exciting a characteristic signal light wave of the multi-state material; The combined lens is used to receive characteristic signal light waves radiated by the multi-state sample (2) to be tested at a distance in a high-temperature plasma state, and transmit the characteristic signal light waves to the spectrum analyzer (7); The spectrum analyzer (7) is used to analyze and identify the characteristic signal light waves radiated by the multi-state sample (2) to be measured; The system also includes a first focusing lens (8); The first focusing lens (8) is used to focus the high-energy laser and direct the focused high-energy laser toward the multi-state sample (2) to be tested at a distance; The combined lens comprises a second focusing lens (3), a focus aperture plate (4), a compression collimating focusing lens (5), and a third focusing lens (6) arranged in sequence at the same level; The second focusing lens (3) is used to receive characteristic signal light waves radiated by high-temperature plasma formed by the multi-state sample (2) to be tested under the excitation of high-energy laser; The focus aperture plate (4) is used to receive the focus of the characteristic signal light wave focused by the second focusing lens (3); The compression collimating focusing lens (5) is used to focus the characteristic signal light wave through the focal aperture plate (4) and convert it into a parallel light beam with a small spot diameter after compression; The third focusing lens (6) is used to focus the parallel light beam output by the compression collimating focusing lens (5) and then input the focused light beam into the optical spectrum analyzer (7).

2. The long-distance autonomous multi-state spectrum detection system according to claim 1 is characterized in that: The system also includes An optical beam splitter (9), the optical beam splitter (9) being arranged between the compression collimating focusing lens (5) and the third focusing lens (6), and being used for transmitting a portion of the parallel light beam and reflecting another portion of the parallel light beam into an imaging device; An imaging device is used to image the parallel light beam reflected by the optical beam splitter (9).

3. The long-distance autonomous multi-state spectrum detection system according to claim 2 is characterized in that: The imaging device comprises an imaging focusing lens (10) and an imaging camera (11); The imaging focusing lens (10) is used to perform imaging focusing on the parallel light beam reflected by the optical beam splitter (9); The imaging camera (11) is used to image the parallel light beam after imaging focusing.

4. The long-distance autonomous multi-state spectrum detection system according to claim 1, characterized in that: The spectrum analyzer (7) establishes a database of spectra of various physical states, uses clock sequence to autonomously identify and analyze characteristic signal light waves, and completes identification and quantitative detection of internal elements of the multi-physical state sample (2) to be tested by fitting the emission spectrum model.

5. The long-distance autonomous multi-state spectrum detection system according to claim 1, characterized in that: The first focusing lens (8) is a long-distance focusing lens.

6. The long-distance autonomous multi-state spectrum detection system according to claim 1, characterized in that: The second focusing lens (3) is a large-aperture collecting focusing lens.

7. The long-distance autonomous multi-state spectrum detection system according to claim 1 is characterized in that: The spectrum analyzer (7) has a detection wavelength range of 200-1600 nm.

8. The long-distance autonomous multi-state spectrum detection system according to claim 3 is characterized in that: The imaging camera (11) adopts a 2-megapixel COMS imager and uses an IR / GR anti-reflection film as an imaging lens.

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