Spectral image fusion device based on field nondestructive identification

Abstract

The utility model discloses a spectrum image fusion device based on field lossless identification, which comprises a portable Raman spectrometer, a laser signal of the portable Raman spectrometer is output through an SMA optical fiber structure, and the SMA optical fiber structure is connected with a Raman probe through a laser optical fiber; the portable Raman spectrometer is also provided with an FC port, and the FC port is connected with the Raman probe through a signal collection optical fiber; a microscopic imaging component is arranged on the Raman probe, and the Raman probe is fixed at one end part of the 360-degree gooseneck universal cantilever component. According to the utility model, component spectrogram signals of large-scale and special-shaped products can be acquired, optical imaging can be carried out on a micro-area of an object to be detected, functional group structure information can be obtained in situ through spectral data, a database is called to carry out material characteristic comparison, chemical components of the micro-area object are expected to be rapidly obtained on site, and the detection accuracy is improved. The method is especially suitable for the fields of archaeology, automobile assembly, environment monitoring, military industry large-scale components and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of non-destructive identification, in particular to a spectrum-image fusion device based on on-site non-destructive identification. Background Art

[0002] Raman spectroscopy, as a scattering spectrum, was first discovered by Indian scientist Raman in 1928. The principle is that the incident light will cause the molecules (or lattices) of the material to vibrate and lose (or gain) some energy, causing the scattered light frequency to change. Raman spectroscopy technology is based on this principle. By analyzing the scattering spectrum of the material, the structural composition, element content and other information of the material can be determined. As an important material characterization method at present, Raman spectroscopy technology can provide simple, repeatable, and non-destructive qualitative and quantitative analysis. In the 1960s, with the birth of laser light sources, the Raman signal of the material was significantly enhanced; and the development of microscopy technology further broadened the application of Raman technology in micro-area detection and analysis. As an in-situ non-destructive testing technology, micro-laser Raman spectroscopy (MLRM) has many advantages such as fast analysis speed, small amount of sample required, high spatial resolution, and strong anti-interference. It has certain applications in earth science, cultural relics archaeology, drug analysis and other fields.

[0003] Developing Raman spectroscopy technology with high sensitivity, high spatial resolution and fast mobile on-site physical property identification, especially for the on-site rapid high spatial resolution micro-area unknown objects of special shapes, large, valuable and inconvenient to move and destroy, can not only provide support for the rapid identification of physical properties in the synthesis process of energetic materials and the on-site diagnosis of abnormal weapons inventory, but also can be further applied to military and civilian fields such as traffic accident scene identification, anti-terrorism, criminal investigation, nuclear emergency scene prediction, medicine and health. The research and development of this type of analysis technology shows important scientific significance and broad application prospects. However, due to technical bottlenecks such as optical path stability, confocal microscopy limit threshold and material separation pretreatment, Raman spectroscopy technology with high sensitivity, high spatial resolution and fast mobile on-site physical property identification is still difficult to achieve, and there is no commercial platform. Utility Model Content

[0004] The purpose of this utility model is to provide a spectrum image fusion device based on on-site non-destructive identification in order to solve the above problems. This utility model is aimed at the on-site rapid high spatial resolution micro-area unknown object in-situ identification of special-shaped, large, valuable and inconvenient to move and destroy objects. It can not only provide support for the rapid identification of physical properties in the synthesis process of energetic materials and the on-site diagnosis of abnormal weapons inventory, but also can be further applied to military and civilian fields such as traffic accident scene identification, anti-terrorism, criminal investigation, nuclear emergency scene prediction, medicine and health. The research and development of this type of analysis technology shows important scientific significance and broad application prospects.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A spectrum image fusion device based on on-site non-destructive identification includes a collection component, the collection component includes a portable Raman spectrometer, the laser signal of the portable Raman spectrometer is output through an SMA optical fiber structure, and the SMA optical fiber structure is connected to a Raman probe through a laser optical fiber;

[0007] The portable Raman spectrometer is also provided with an FC port, and the FC port is connected to the Raman probe through a signal collection optical fiber;

[0008] The Raman probe is provided with a microscopic imaging component, and the Raman probe is fixed to one end of a 360-degree gooseneck universal cantilever component.

[0009] A further solution is that the other end of the 360-degree gooseneck universal cantilever component is used for fixing.

[0010] A further solution is that the portable Raman spectrometer is optical fiber output, and the laser is 785nm, 532nm, or 633nm.

[0011] A further solution is that the wave number resolution of the portable Raman spectrometer is greater than 10 cm -1 , the acquisition time accuracy is 1ms, and the acquisition range is 200-3500cm -1 .

[0012] The beneficial effects of the utility model are:

[0013] The utility model is a spectrum image fusion device based on on-site non-destructive identification. While meeting the needs of collecting component spectrum signals of large and special-shaped products, it can also perform optical imaging of the micro-area of ​​the object to be tested and obtain functional group structure information in situ through spectral data, call the database to perform feature comparison of the substance, and is expected to quickly obtain the chemical components of the micro-area object on-site, and quickly identify the substance and its microscopic morphology. The new spectrum image fusion technology device has non-destructive, non-contact detection, fast detection speed (3-5s), high sensitivity, and can realize the dual functions of imaging and chemical component identification. It is particularly suitable for archaeology, automobile assembly, environmental monitoring, large military components and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, 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 only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural diagram of the utility model.

[0016] Figure 2 This is a Raman map of the process field analysis of the utility model device used for the explosive CL-20 / MTNP co-crystallization. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0018] In any embodiment, if Figure 1 As shown, a spectrum-image fusion device based on on-site non-destructive identification of the utility model includes a collection component, wherein the collection component includes a portable Raman spectrometer 1, and the laser signal of the portable Raman spectrometer 1 is output through an SMA optical fiber structure 2, and the SMA optical fiber structure 2 is connected to a Raman probe 4 through a laser optical fiber;

[0019] The portable Raman spectrometer 1 is also provided with an FC port 3, and the FC port 3 is connected to the Raman probe 4 through a signal collection optical fiber;

[0020] The Raman probe 4 is provided with a microscopic imaging component 5 , and the Raman probe 4 is fixed to one end of a 360-degree gooseneck universal cantilever component 6 .

[0021] The other end of the 360-degree gooseneck universal cantilever component 6 is used for fixing.

[0022] The portable Raman spectrometer 1 is optical fiber output, and the laser is 785nm, 532nm, or 633nm.

[0023] The wave number resolution of the portable Raman spectrometer 1 is greater than 10 cm -1 , the acquisition time accuracy is 1ms, and the acquisition range is 200-3500cm -1 .

[0024] The Raman probe is connected to the microscopic imaging component through a resonant microhole. The size of the resonant microhole is preferably less than 500 microns for laser alignment. The resonant microhole is machined on the 360-degree gooseneck universal cantilever component, and the 360-degree gooseneck universal cantilever component connects the portable Raman spectrometer and the microscopic imaging component through screws. The 360-degree gooseneck universal cantilever component is characterized by a foldable lightweight cantilever with an unfolded size of not less than 1.5 meters and a height of 1 meter. It can perform in-situ microscopic imaging and spectral detection on large, special-shaped and irregular objects.

[0025] In addition, the microscopic imaging component connected by the 360-degree gooseneck universal cantilever component can be coupled with the portable Raman fiber probe to form a non-coupled optical path in which laser and white light can be switched. The laser and spectral signals in the optical path are focused by limited microscopy. After being constrained by the numerical aperture of the microscope objective, the laser is irradiated to the sample surface. After exciting the spectral signal, the Raman signal is collected by the microscope objective. After optical fiber transmission, the signal is output through the portable Raman spectroscopy system. And the microscope objective meets 10 to 100 times. Thus, a new coupling and non-coupling association device of the microscopic imaging module and the spectral module is obtained. Specific embodiment:

[0027] First, a portable Raman spectrometer with a laser wavelength of 532nm is connected to the probe, and the other end of the probe is introduced into the microscopic imaging component through a resonant microhole. The size of the resonant microhole is preferably less than 500 microns for laser alignment. The resonant microhole is machined on a 360-degree gooseneck universal cantilever component, and the 360-degree gooseneck universal cantilever component connects the portable Raman spectrometer to the microscopic imaging component. The 360-degree gooseneck universal cantilever component is characterized by a foldable lightweight cantilever with an unfolded size of not less than 1.5 meters and a height of 1 meter. The height can directly detect reactants in large reactors ( Figure 1 ).

[0028] Second, the focusing distance with the explosive reactants in the reactor was adjusted by the 360-degree gooseneck universal cantilever component, and imaging data was collected using the microscopic imaging component. The spectrum was detected using a portable Raman spectrometer with an integration time of 20s and a laser power of 20%. Figure 2 .

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims. It should also be noted that the various specific technical features described in the above-mentioned specific implementation methods can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the utility model will no longer explain various possible combinations separately. In addition, the various different implementation methods of the utility model can also be arbitrarily combined, as long as they do not violate the idea of ​​the utility model, they should also be regarded as the contents disclosed by the utility model.

Claims

1. A spectrum image fusion device based on on-site non-destructive identification, characterized in that: It includes a collection component, the collection component includes a portable Raman spectrometer, the laser signal of the portable Raman spectrometer is output through an SMA optical fiber structure, and the SMA optical fiber structure is connected to the Raman probe through a laser optical fiber; The portable Raman spectrometer is also provided with an FC port, and the FC port is connected to the Raman probe through a signal collection optical fiber; The Raman probe is provided with a microscopic imaging component, and the Raman probe is fixed to one end of a 360-degree gooseneck universal cantilever component.

2. The spectrum image fusion device based on on-site non-destructive identification according to claim 1, characterized in that: The other end of the 360-degree gooseneck universal cantilever component is used for fixing.

3. The spectrum image fusion device based on on-site non-destructive identification according to claim 1, characterized in that: The portable Raman spectrometer is optical fiber output, and the laser is 785nm, 532nm, or 633nm.

4. The spectrum image fusion device based on on-site non-destructive identification according to claim 1, characterized in that: The wave number resolution of the portable Raman spectrometer is greater than 10 cm -1 , the acquisition time accuracy is 1ms, and the acquisition range is 200-3500cm -1 .

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