28 results about "Laser raman spectroscopy" patented technology

The application discloses a household garbage fine separation method and system suitable for pyrolysis and fermentation, and belongs to the technical field of solid waste treatment and resource utilization, and comprises pre-crushing, first magnetic separation, drum screening, air separation, fine crushing, second magnetic separation and Raman light selection; a separation equipment integrating a visual sensor and a laser Raman spectrum probe is adopted to identify and separate the material after the second magnetic separation, so that different kinds of plastics are separated based on the molecular vibration fingerprint information of the material; wherein each step is uniformly scheduled and controlled by an automatic control system according to a preset program or real-time feedback parameters, and the dust generated in the whole process is collected and purified by a tail gas dust removal control system. Through the construction of a multi-stage collaborative process route, the material is fully dissociated and purified step by step, and the problems of low separation precision and poor system collaboration are solved by cooperating with automatic unified scheduling and full-process dust removal.

The invention belongs to the technical field of surface enhanced Raman scattering (SERS) detection, and relates to an electrochemical Raman SERS substrate and a trace substance selective detection method. The electrochemical Raman SERS substrate comprises a bottom layer and a surface layer, the bottom layer is a conductive substrate, and the surface layer is a semiconductor oxide film. Taking an electrochemical Raman SERS substrate as a working electrode, immersing the working electrode into the detection liquid A to construct a three-electrode system, and carrying out laser Raman spectrum detection by utilizing a Raman spectrometer and an electrochemical workstation; the detection solution A comprises a target detection substance and an electrolyte solution. According to the technical scheme provided by the invention, electrochemical cycle regulation and control of semiconductor band gaps is matched and combined with molecular HOMO-LUMO energy levels, so that precise recognition of a single component in a mixture can be realized; according to the technical scheme, the regulation and control flexibility is high, and multi-component detection can be completed without replacing the substrate. The trace substance selective detection method is wide in applicability, simple, convenient and efficient to operate, free of complex pretreatment and suitable for on-site rapid screening.

The application provides a fault identification method and system based on multi-element spectral mineral anomaly analysis, relates to the fields of geology, spectroscopy, petrology and engineering geology, and a specific scheme comprises the following steps: in-situ testing of tunnel surrounding rock is carried out by using a visible light-near infrared, mid-infrared and laser Raman spectrometer, and mixed spectral variation characteristics are extracted; based on the mixed spectral variation characteristics, the mineral composition of the tunnel surrounding rock is identified according to the spectral identification standard of the abnormal mineral combination of the fault zone, quantitative inversion of the minerals is carried out, and the mineral content is obtained; according to the mineral anomaly mode of the fault zone, mineral anomaly analysis is carried out on the mineral composition, and the mineral anomaly type is obtained; based on the differential change of the mineral content and the mineral anomaly type, mineralogical anomaly characteristic analysis is carried out, and the fault identification result is output; the application replaces the experience knowledge of traditional geologists with quantitative information of multi-element spectral mineral anomaly, and further improves the accuracy and efficiency of fault identification in tunnels and underground engineering.

The invention discloses a filling machine system based on the Internet of Things, and relates to the technical field of urea filling machines. A multi-mode fusion sensing module collects working condition environment, equipment health, fluid component traceability and characteristic full-dimension data through a three-dimensional and near-field traceability sensing array, a laser Raman spectrum and a micro-fluidic chip detector; the federated learning collaborative decision-making module derives a working condition-fluid interaction coefficient and an equipment-fluid adaptation degree based on the data, and evaluates a dynamic optimization strategy starting demand; the digital twinborn driving control and protection optimization module constructs a 1: 1 twinborn simulation optimal operation state, and generates a dynamic filling or anti-corrosion adjustment scheme adaptive to the scene; and the cross-equipment knowledge migration closed-loop module issues an optimization instruction, constructs a three-level compensation system based on the temperature regression duration and the corrosion rate variation, and analyzes a multi-parameter compensation scheme. Full-dimensional perception, intelligent decision making, dynamic adaptation and closed-loop optimization of data are achieved, and filling accuracy, safety and operation and maintenance efficiency are improved.

The invention belongs to the technical field of oil and gas resource exploration, particularly relates to a shale maturity evaluation method and system based on laser Raman spectrum classification, electronic equipment and a computer readable storage medium, and aims to solve the problem that the maturity of shale with complex components is difficult to accurately evaluate by an existing maturity evaluation method. The method comprises the following steps: firstly, identifying microscopic components of algae, inert plastid, vitrinite and solid asphalt in a sample; testing each component by using a laser Raman spectrometer to obtain spectral data, and calculating RBS values (displacement difference between a G peak and a D peak) and a mean value; models (a linear model for inert / vitrinite and an index model for algae / solid asphalt) are selected according to a component evolution mechanism and substituted into an RBS average value to obtain equivalent vitrinite reflectivity of different macerals, and the maturity is evaluated according to the equivalent vitrinite reflectivity. The method solves the problem of continental facies multi-component evaluation deviation, breaks through the bottleneck of no vitrinite of marine facies, is fast in test and low in data dispersion, and provides support for shale oil and gas evaluation.

The invention belongs to the technical field of laser Raman spectrum detection, and relates to a multicolor electrochromic SERS (Surface Enhanced Raman Scattering) substrate as well as a preparation method and application thereof, the method comprises the following steps: synthesizing a vanadium pentoxide nanobelt by using vanadium pentoxide powder as a raw material through a simple solvent treatment method, and preparing the multicolor vanadium oxide electrochromic SERS film substrate by adopting a spraying processing technology. The multicolor vanadium oxide electrochromism SERS substrate has electrochromism and SERS effects, the change of charge transfer, charge density and band gap width is accompanied in the electrochromism process, and the SERS performance of the multicolor vanadium oxide electrochromism SERS substrate can be remarkably changed through the change. The color, the transmittance, the energy band gap and the detection performance can be accurately, reversibly and visually regulated and controlled by naked eyes by changing the external potential. The color of the multicolor electrochromic SERS substrate and the SERS detection performance have strong relevance, the SERS detection performance and molecular selectivity of the multicolor electrochromic SERS substrate can be judged through color change, and the multicolor electrochromic SERS substrate has great significance in trace detection of to-be-detected molecules.

The invention belongs to the technical field of low-temperature vein ore deposit mineralization center positioning methods, and particularly relates to a low-temperature vein ore deposit mineralization center positioning method based on muscovite group minerals, which comprises the following steps of: collecting, analyzing and sorting regional geological data, and collecting geological characteristics, mineralization background, regional structure and metamorphic background of a mining area; analyzing muscovite cause types and determining mineralization conditions; field geological survey sampling and drilling rock core logging are carried out, surrounding rock alteration characteristics are observed, sampling and logging rock cores are recorded, and test samples are collected at intervals; the short-wave infrared spectrum technology, the electronic probe technology and the laser Raman spectrum technology are creatively integrated, classification characterization and multi-dimensional data mining are carried out on muscovite family minerals, key parameters such as Pos2200, ISM values and Raman peak displacement of the muscovite family minerals are extracted, muscovite types related to and unrelated to the minerals can be effectively distinguished, invalid indication information is eliminated, and the mining quality is improved. The positioning precision of the concealed ore body is remarkably improved, and the problems that relevance interpretation is insufficient and positioning is fuzzy in a traditional single technical means are solved.

The invention relates to the technical field of detection and enrichment of minerals in coal, and particularly provides a coal sample ashing degree control method and system based on a laser Raman spectrum. The method comprises the following steps: acquiring a laser Raman spectrogram of a coal sample in real time in an ashing process of the coal sample; determining ashing process characterization parameters of the coal sample based on the laser Raman spectrogram; turning over the coal sample based on a comparison result of the ashing process characterization parameter and the dynamically adjusted trigger threshold value; when it is judged that the ashing process characterization parameter reaches the preset completion standard, an ashing completion signal is output. The system comprises a coal sample ashing unit, a laser Raman instrument and a controller. The ashing unit comprises a sample bin, a coal sample bearing piece and a vibration device coupled with the coal sample bearing piece. An optical probe of the laser Raman instrument penetrates through the bin wall, and a light path of the optical probe is aligned with the sample area. And the controller is electrically connected with the laser Raman instrument, the vibration device and the sample bin. Therefore, closed loop of real-time monitoring, automatic judgment and automatic execution is realized, the necessity of manual intervention is thoroughly eliminated, the automation of the whole process is realized, the ashing efficiency can be improved, and the analysis of minerals and key metals can be realized.

The invention relates to the technical field of jadeite detection, in particular to a method for identifying organic matter types in jadeite based on a laser Raman spectrum D / G peak. According to the invention, the trace unsaturated hydrocarbon component (1t) of solid wax oil in jadeite is found for the first time; according to the present invention, the laser Raman spectrum D / G peak can induce the D peak (1350 + / -20 cm <-1 >) and the G peak (1600 + / -20 cm <-1 >) under the thermal effect of the laser, such that the method for determining the type of the organic matter in the jadeite based on the laser Raman spectrum D / G peak is developed for the first time, if the D peak and the G peak appear at the same time or only the G peak appears in the laser Raman spectrum, the organic matter in the jadeite is determined to be the solid paraffin, and if the D peak and the G peak appear in the laser Raman spectrum, the organic matter in the jadeite is determined to be the organic matter in the jadeite is determined to be the organic matter in the jadeite. Therefore, the corresponding relation between the unsaturated olefin component in the wax oil and the D / G peak of the Raman spectrum is established, and the blank of qualitative analysis of the organic matter of the jadeite is filled.

The application discloses a method for rapidly detecting the content of methane in combustible ice, and comprises the following steps: using a combustible ice vacuum decomposition device to perform vacuum decomposition on a combustible ice sample, so that the combustible ice sample is completely decomposed to obtain combustible ice decomposition gas; using a microscopic confocal laser Raman spectrometer to test the combustible ice decomposition gas; according to the obtained Raman spectrum, analyzing the corresponding methane spectrum peak area; and according to the external standard method, calculating the content of methane. The combustible ice is placed in vacuum for decomposition to obtain pure combustible ice decomposition gas; a vacuum pump is used to extract the decomposition device to a vacuum state; a constant temperature bath with controllable temperature is used to control the decomposition temperature; the phase equilibrium relationship of the combustible ice is used to collect the decomposition gas; a transparent gas bag is used to fill the decomposition gas; the Raman spectrometer is used to test the decomposition gas; the Raman spectrum of the sample is subjected to baseline correction, curve smoothing and other treatments to obtain the Raman characteristic peak area; and the external standard method is used to realize the rapid detection of the content of methane in the combustible ice.

A resin-coated metal sheet for containers includes a polyester resin coating layer on at least one side of a metal sheet. The polyester resin coating layer is such that the half-width of a peak assigned to C═O stretching vibration near 1730 cm−1 according to laser Raman spectroscopy is 24 cm−1 or more and 28 cm−1 or less as measured in such a manner that linearly polarized laser light with a wavelength of 532 nm is incident on the surface thereof in such a manner that the polarization plane is parallel to the rolling direction of the metal sheet; the polyester resin coating layer contains 0.010 mass % or more and 1.0 mass % or less of an organic lubricant.

The invention relates to the technical field of graphite negative electrode materials of lithium ion batteries, and discloses a method for evaluating the uniformity of a coating layer on the surface of coated graphite, which comprises the following steps: S1, respectively carrying out Raman surface scanning detection on a graphite base material and the coated graphite by using a laser Raman spectrometer to obtain ID / IG values of a plurality of point positions in a scanning range; s2, arranging ID / IG values of the graphite base material in a descending order, and removing front 10%-20% of point locations to obtain optimized data I; selecting the maximum ID / IG value in the optimized data I as a critical point M; s3, arranging ID / IG values of the coated graphite in a descending order, and removing front 10%-20% of point positions and rear 10%-20% of point positions to obtain optimized data II; and S4, calculating the coating rate K of the coated graphite: K = A / B. The accuracy of calculating the coating rate is high.

The invention provides a paleo-pressure evolution history recovery method and device in a shale gas forming process. The corresponding method comprises the following steps: determining a crack period of a crack according to an original occurrence of the crack of a rock sample in a target work area, a cement filling characteristic, a stratum occurrence of a stratum where the rock sample is located and a crustal stress direction of the target work area; wherein the crack is formed in a structure lifting stage or a settlement stage of the target work area; determining the paleopressure corresponding to the crack period according to the temperature of the salt water inclusion in the rock sample, the density of the pure methane inclusion and the laser Raman spectrum measurement result; and recovering the paleo-pressure evolution history of the target work area according to the magnitude of the paleo-pressure, a pre-generated burial history simulation result of the target work area and a pressure simulation result. The paleopressure at different times can be accurately, visually and continuously obtained, and the dynamic change of the formation pressure in the shale gas forming process is revealed from the angle of integration of geology, experiments and simulation, so that a basis is provided for shale gas exploration and development.

The invention provides a non-stop drunk driving detection system and method fusing a laser absorption spectrum and a laser Raman spectrum. Comprising a dual-mode laser emitting unit, a light transmission unit and a signal receiving and processing unit. In the transmitting unit, a signal generator generates a superposition modulation signal of sawtooth waves and sine waves to drive a first laser to output modulation laser for absorption spectrum analysis; the second laser outputs laser for exciting Raman scattering; and the mode switching controller supports synchronous work of an absorption mode, a Raman mode or dual modes. The optical transmission unit emits the laser light to a vehicle cabin and collects a return optical signal. The receiving and processing unit demodulates an absorption signal through a lock-in amplifier to obtain a harmonic wave, analyzes a Raman scattering signal through a spectrograph to obtain a characteristic peak, and further calculates the alcohol concentration, so that rapid and reliable non-contact detection is realized.

The carbon material dispersion liquid disclosed herein contains a crystalline carbon material, a dispersant which has a basic functional group and a weight average molecular weight of 1,000 or more, and a nonaqueous solvent. The carbon material in the carbon material dispersion liquid has a peak intensity ratio (IG / ID) of 45 or less as obtained by laser Raman spectroscopy. The carbon material dispersion liquid has a temperature change rate X of 1.0 or less, the temperature change rate X being expressed by the following formula: X = |D2 - D1| / D1 (wherein D1 is the median diameter (µm) of the carbon material in the carbon material dispersion liquid at 20°C, D1 ≤ 30 is satisfied, and D2 is the median diameter (µm) of the carbon material in the carbon material dispersion liquid at 80°C).

The application discloses a kind of detection methods of regenerated polyester fiber, comprising the following detection steps: step S1, detection cloth is laid on detection bearing seat, detection bearing seat includes arc surface in upper portion, cloth is laid with arc surface and is attached;Step S2, open detection light path, the light of detection light path is focused on the P point of cloth outer surface, the light of detection light path is shot and the included angle α is formed with the normal direction of cloth at P point;Step S3, adjust the height difference of detection light path and cloth, so that the included angle α changes, to adapt to the included angle α value required by different cloth;Step S4, using laser raman spectrometer as the light source of detection light path, to detect the regenerated polyester fiber of cloth.The application provides a kind of detection methods of regenerated polyester fiber, changes incident included angle α to meet the detection needs of different cloth.

Disclosed is an out-field detection device, comprising an out-field stainless steel substrate, a passivation solution container, a cover glass, an electrochemical workstation, a Raman spectrometer, a Raman laser emission source, and a peristaltic pump. The passivation solution container is configured to contain a passivation solution; the cover glass is configured to seal the passivation solution container; the peristaltic pump is in fluid communication with the passivation solution container and configured to control flow of the passivation solution; the electrochemical workstation is configured to apply a dynamic potential to the out-field stainless steel substrate and measure a polarization curve, the electrochemical workstation is provided with a working electrode interface configured to establish electrical connection; the Raman laser emission source is configured to emit laser light toward the passivation solution; the Raman spectrometer is configured to obtain a Raman spectrum of the passivation solution.

The utility model relates to the technical field of experimental teaching instruments, in particular to a dual-wavelength laser Raman spectrum experimental instrument, which comprises a reflector path system, a monochromator and a photoelectric detector, the reflector path system comprises a shell, a first laser, a long-pass optical filter, a first diaphragm, a second diaphragm, a short-focus achromatic lens, a sample table and a long-focus achromatic lens; the instrument further comprises a second laser, a first reflecting mirror, a second reflecting mirror, a third reflecting mirror and an inclined hole reflecting mirror. An opening is formed in the machine shell, and a turning cover is arranged on the opening. The laser Raman spectrum experimental instrument overcomes the defects that in the prior art, a laser Raman spectrum experimental instrument used for experimental teaching is of a closed structure and adopts a single-wavelength excitation light source, so that teaching content and teaching effects are limited, and the external light path system adopts an open structure and is provided with two lasers. Students can fully understand the internal structure of the instrument and the influence of excitation light sources with different wavelengths on experimental results, and the teaching effect is improved.

The invention discloses a method for indicating a hydrothermal center based on chlorite short-wave spectrum and Raman parameters, and belongs to the technical field of mineral exploration. The method comprises the following steps: carrying out geological exploration on a target mining area; determining chlorite sample sampling points based on the exploration result; acquiring chlorite SWIR spectral data based on the chlorite sample; analyzing and interpreting SWIR spectrum data, establishing a mining area altered mineral spectrum matching library, and analyzing spectrum parameters of chlorite samples; performing laser Raman spectrum scanning on chlorite samples with different depths to obtain a change curve of Si-Obr-Si telescopic vibration of the chlorite samples along with the depths; sWIR and Raman parameter prospecting indexes are extracted, and comprehensive prospecting indexes are established to determine the hydrothermal center. The method has the characteristics of high recognition degree, convenience in operation, reliable result, short interpretation time, high test speed, relatively strong short wave infrared parameters and Raman spectrum characteristic signals and high signal-to-noise ratio.

The invention discloses a multi-dimensional slag detection device for oxygen pressure leaching of germanium-rich zinc concentrate, and relates to the technical field of intelligent sensors. Comprising a slag conveying part, a feeding port used for feeding slag is formed in the top of one side of the slag conveying part, a sampling port is formed in the bottom of one side of the slag conveying part, an empty cylinder is connected to the bottom of the sampling port, and a compaction part and a detection part are arranged on the two sides of the empty cylinder respectively; the detection part comprises a cavity frame arranged on one side of the empty cylinder and an intelligent sensing detection module arranged on the inner side of the cavity frame. Transverse conveying is carried out through the slag conveying part, sampling is carried out in the conveying process, cake pressing treatment is carried out after sampling, and then analysis is carried out through a confocal display imaging sensor, an X-ray synchronous excitation / receiving sensor and a laser Raman spectrum sensor of the intelligent sensing detection module. Therefore, the microscopic information about the composition and distribution of the key phase in the core solid product of the leaching residue and the occurrence state of the valuable metal can be directly obtained on line in situ.

The balloon catheter includes: a shaft; and a balloon having a straight tube portion and a tapered portion, wherein the balloon has a wing-shaped portion and a protrusion on an outer surface, and a scattering intensity in each of the cross sections measured by laser Raman spectroscopy satisfies Expression (1): Ime>Ite (1) where Ime is Ia / Ib at a central part of a base end part of the protrusion on the straight tube portion, and Itc is Ia / Ib at a central part of a base end part of the protrusion on the tapered portion, Ia being a ratio of a peak intensity in the X direction to a peak intensity in the Y direction at a wavenumber of 1640 cm−1, Ib being a ratio of a peak intensity in the X direction to a peak intensity in the Y direction at a wavenumber of 1440 cm−1.

This invention discloses a high-precision proportioning system and control method for dissolving and mixing silane mixtures, relating to the field of mixing equipment technology. The system includes a raw material storage module consisting of three stainless steel tanks for storing silane, diluent gas, and solvent respectively, with passivated inner walls and insulated outer walls; a precision metering module equipped with a plunger pump and a mass flow meter for real-time flow feedback; a dissolution and mixing module, a double-jacketed tank with atomizing nozzles and a double-layered oblique-blade counter-current stirring impeller; a temperature and pressure control module including a jacket temperature controller and a tank top pressure relief valve; a concentration monitoring module equipped with an online laser Raman spectrometer; a tail gas treatment module consisting of an adsorption tower and a catalytic burner; and a central control module using a PLC and touchscreen to achieve fully automated control of the entire process. All modules work together to prepare the mixed gas. This invention improves the proportioning accuracy and dissolution efficiency of the silane mixture, stabilizes concentration drift, and provides environmentally friendly tail gas treatment; it is adaptable to high-precision requirements in various scenarios, providing stable raw materials for downstream processes.

The application discloses a method for determining the hydrothermal activity age of a volcanic rock reservoir, and relates to the technical field of volcanic rock identification. The method comprises the following steps: obtaining a zircon sample target of the volcanic rock reservoir to be measured; performing laser Raman spectrum testing to obtain Raman spectrum data of the zircon sample target; processing the data to obtain the peak position and half-height width of the vibration peak v3SiO4 of the zircon sample target; fitting the half-height width and the position parameter of the wave peak center of the vibration peak v3SiO4 to determine the morphological characteristics and composition of the inclusion in the zircon; performing isotopic proportion and trace element composition analysis to determine the formation age of the zircon; and constructing a half-height width-time fitting curve to determine the formation period of the hydrothermal mineral coexisting with the zircon. The method can be used to divide the zircon period of the volcanic lava, and has a good determination on the zircon genesis, thereby providing an important identification basis for the late hydrothermal / tectonic action events and time of the volcanic rock reservoir.

The invention relates to a nondestructive testing method for the cleanliness of the bottom of a blind hole in an FPC (Flexible Printed Circuit) manufacturing process. The method comprises the following steps: preparing an FPC (Flexible Printed Circuit) sample which is processed by a laser process and a Plasma process and is provided with a blind hole; positioning and amplifying the hole bottom area of the blind hole of the FPC sample by adopting a laser Raman spectrometer, and performing laser focusing on the surface of the hole bottom area of the blind hole; scanning the hole bottom area of the blind hole through a laser Raman spectrometer according to preset test parameters, and obtaining a Raman spectrogram of the hole bottom area of the blind hole; detecting whether Raman absorption peaks exist in the Raman spectrogram of the hole bottom area of the blind hole or not, if yes, judging that residues exist at the hole bottom of the blind hole, and if not, judging that no residues exist at the hole bottom of the blind hole. The method is simple in detection, efficient and accurate in detection and free of any damage to a detected sample, and residues can be qualitatively analyzed.

The invention provides a method for determining the mineralization potential of beryllium based on zircon microcell test. The method comprises the steps of sample preparation, fixed-point analysis of major elements, acquisition of a parameter C, preliminary screening of the mineralization potential of Be, structural analysis of a microcell laser Raman spectrum, acquisition of a parameter P, diagnosis of a mineralization mode, and grading determination of the mineralization potential. By means of the technical scheme, the quantitative error caused by testing and calibration in a traditional method is solved, and a reliable data basis is provided for subsequent evaluation. According to the method, due to hierarchical evaluation logic and clear criteria, 'false anomaly 'interference such as high background values can be effectively filtered out, rock masses without mineralization potential can be accurately identified, the exploration misjudgment rate is greatly reduced, a high-quality prospecting target area is helped to be focused, and economic benefits are large.

The present invention addresses the problem of providing a porous carbon sheet which achieves both strength and electrical conductivity. The present invention provides a porous carbon sheet which contains carbon fibers and a carbonized resin. The porous carbon sheet contains carbon fibers of which the Raman peak intensity ratio (R value) at the surface is 5 to 30 times the R value at the surface of the carbonized resin. Here, the Raman peak intensity ratio (R value) refers to the peak intensity ratio of the D band to the G band measured by laser Raman spectrophotometry.

The invention belongs to the technical field of laser Raman spectrum detection, and discloses a preparation method and application of a flexible SERS (Surface Enhanced Raman Scattering) substrate based on a three-dimensional porous silver nanostructure, polyvinyl alcohol hydrogel is used as a flexible substrate material, sodium borohydride is used as a reducing agent, silver nanoparticles are grown on the surface of the polyvinyl alcohol hydrogel through an in-situ reduction method, and the flexible SERS substrate based on the three-dimensional porous silver nanostructure is prepared. And preparing to obtain the flexible SERS substrate based on the three-dimensional porous silver nanostructure. The flexible SERS substrate based on the three-dimensional porous silver nanostructure prepared by the invention has a three-dimensional high-density hot spot area, is high in detection sensitivity, good in signal reproducibility and good in flexibility and mechanical property, and can be used for detecting harmful molecules on irregular surfaces.