102 results about "Uv spectrum" patented technology

The invention relates to the technical field of water quality detection, and discloses a water quality sampling monitoring method and system for an intelligent water station based on ultraviolet spectrum, and the method comprises the steps: carrying out the regional division of the intelligent water station, and obtaining a plurality of water areas; performing water quality analysis according to the ultraviolet spectrum data of the water sample at the central sampling point of each water area to obtain a normal water area and an abnormal water area; performing water quality analysis on all sampling point water samples in the abnormal water area to obtain pollution source sampling points; the intelligent water station is subjected to regional treatment, so that the water sample collection quantity is reduced, and the water quality detection process is accelerated; different water quality analysis methods are adopted in different water quality analysis stages, dynamic adjustment of the analysis process is achieved, a sampling point closest to a pollution source is determined, and water station water quality treatment is facilitated; the model parameters of the water quality detection model are optimized by using a multi-objective optimization method, so that local optimum is effectively avoided when a multi-output objective problem is processed, and the accuracy of a water quality detection result is improved.

The invention discloses a wafer quality analysis method based on image recognition, and particularly relates to the field of semiconductor manufacturing quality detection, which comprises the following steps: synchronously acquiring wafer two-dimensional images under visible light, infrared and ultraviolet spectrums through a multispectral and high-resolution fusion camera combination model; the structured light three-dimensional reconstruction technology is used for obtaining surface three-dimensional shape data, a self-adaptive noise suppression algorithm is applied, noise features are recognized through frequency domain analysis, filtering parameters are dynamically adjusted, targeted noise reduction is achieved, a multi-scale feature pyramid and quantum dot mark recognition fusion model is constructed, defect contours and material heterogeneous areas are extracted in a layered mode, and the defect detection precision is improved. The method comprises the following steps: extracting microstructure characteristic parameters by combining a quantum dot fluorescence labeling technology, mapping microscopic characteristics and three-dimensional shape data to a multi-modal space model, generating three-property parameters of a wafer, establishing a three-dimensional evaluation system, comprehensively judging a quality grade and outputting an analysis report, so that the precision and efficiency of wafer quality detection are remarkably improved.

This invention proposes an online quality detection method for An Shen Bu Nao Liquid based on multispectral fusion. Addressing the bottlenecks of traditional detection techniques, such as long offline processing time, weak multi-index detection capabilities, and poor dynamic adaptability, this method achieves intelligent quality control throughout the entire production process. The device integrates ultraviolet-visible spectroscopy, near-infrared spectroscopy, and fluorescence spectroscopy modules. It constructs a multi-scale residual convolutional network to extract ultraviolet-visible spectral features, uses a two-way LSTM to analyze the fluorescence excitation-emission matrix, and employs dynamic baseline correction of the ultraviolet spectrum. This improves the detection accuracy of icariin content by 40% compared to traditional HPLC methods, and achieves a heavy metal residue detection limit of 0.05 ppm, providing an innovative solution for the intelligent production of traditional Chinese medicine preparations.

An ultraviolet (UV) light source includes a light emitting element that is configured to generate light of a first frequency, a nonlinear optical element that is configured to receive the light of the first frequency from the light emitting element and generate UVC or far-UVC light of a second frequency from the light of the first frequency, and an output coupling element that is configured to selectively outcouple the UVC or far-UVC light from the nonlinear optical element as output light. Related light sources and fabrication methods are also discussed.

The invention relates to the technical field of water quality monitoring, and discloses a DOC spectrum monitoring method and device. Comprising the following steps: pre-treating a water sample through a filtering device to eliminate the interference of turbidity on spectrum detection; conveying the pretreated water sample into a detachable flow cell, and collecting an ultraviolet spectrum of the water sample through an independently arranged light source spectrometer; determining a target characteristic wavelength subset from the ultraviolet spectrum; inputting the target characteristic wavelength subset into a pre-trained integrated meta-model to obtain a predicted value of the DOC concentration in the water sample; wherein the integrated meta-model is constructed by adopting a Stacking strategy and comprises a plurality of base models and a meta-model, and the meta-model is used for learning prediction results of the base models and performing fusion output; according to the monitoring system state or the preset maintenance period, before the flow cell is disassembled and maintained, the backwashing unit is triggered to execute the pre-cleaning operation, and the technical scheme is provided which gives consideration to the installation convenience, the monitoring accuracy and the operation stability.

The invention relates to the technical field of artwork identification, and discloses a multi-modal artwork fingerprint authenticity identification system based on A1 and a block chain, and the system comprises a multi-modal data collection module which is used for collecting multi-spectral sensing data of artworks, including multi-modal information such as a visible light image, an infrared spectrum image, an ultraviolet spectrum image and a depth image; the preprocessing module is used for preprocessing the collected multi-modal data, including data alignment, denoising, texture enhancement and other operations, so as to improve the data quality and the accuracy of feature extraction; the feature extraction module is used for extracting fingerprint features of artworks, including multi-modal feature information such as surface texture features, material features and shape features, based on a convolutional neural network of a deep learning algorithm, and constructing a dynamic feature template; by innovatively fusing multi-modal data acquisition and a deep learning algorithm and cooperating with an efficient twin network comparison algorithm, the identification accuracy is up to 99.2%, and the accuracy of artwork authenticity identification is greatly improved.

The invention discloses an ultraviolet spectrum denoising method based on an improved SWO optimization VMD-KPCA algorithm, and the method comprises the steps: firstly enabling a spectrum signal to serve as an input, importing the spectrum signal into an improved SWO algorithm (ISWO), and outputting an optimal parameter combination of VMD according to a fitness function through the algorithm; setting variational mode decomposition optimal parameters to perform signal decomposition to obtain intrinsic mode functions (IMF), and performing feature extraction on each IMF by using KPCA (Kernel Principal Component Analysis); and distinguishing the IMF by using a variance contribution rate (VCR) to screen out an effective signal, and finally reconstructing an effective signal component to finally obtain a denoised ultraviolet-visible absorption spectrum signal. The method has the advantages that through the improved SWO algorithm, optimal KPCA and VMD parameters can be selected in a self-adaptive mode, and the denoising effect is improved; the advantages of KPCA and VMD are combined, signals and noise can be effectively separated, the quality of spectral data is improved, the optimized algorithm has the good convergence speed, the calculation complexity is reduced, and the method is suitable for processing large-scale spectral data.

The invention provides a partial discharge quantization optical sensor and a detection method thereof, and aims to solve the problems that in a traditional optical detection method, the capture efficiency of a light guide rod on a side wall incident light signal is low and the utilization rate of an ultraviolet spectrum signal is not high, the side wall of the light guide rod is uniformly coated with a CdSe / ZnS core-shell structure quantum dot material; through a light absorption-re-emission mechanism, efficient coupling and transmission of side wall incident light signals are realized. The method improves the sensitivity and reliability of GIS partial discharge optical detection, especially shows stable response enhancement in a weak discharge stage, and is of great significance to the operation safety of GIS equipment.

An optoelectronic device (1) is identified, comprising at least one emitter (2) configured to emit electromagnetic radiation (3) in the ultraviolet spectral range, and at least one optical element (4) configured to redirect the electromagnetic radiation (3) towards an external surface (5) such that the external surface (5) is uniformly illuminated.

The present application relates to the field of spectral measurement, in particular to a kind of ultraviolet spectrum measurement method, comprising: fluorescence gradual conversion device is converted into visible light by the ultraviolet light to be measured obtained, and is transmitted to image sensing device;Image sensing device converts the visible light into visible light intensity image, and is transmitted to data processing device;According to the visible light intensity image obtained by data processing device, and according to the preset reconstruction algorithm, the spectrum of the ultraviolet light to be measured is calculated.The present application does not need to use the slit, grating and complex collimating focusing light path of existing spectrometer, the present application uses black and white surface array CCD to receive incident light in large area, and converts the ultraviolet light insensitive to CCD into sensitive visible light, greatly improves the intensity and utilization of optical signal, greatly reduces cost, reduces volume, and can very conveniently improve resolution and conversion measurement range.

An ultraviolet spectrum online monitoring device and method for mixed gas of SF6 decomposition components, the device comprising: an adjustable ultraviolet light source, a detection cell, an ultraviolet sensor, a signal acquisition unit and a wireless transmission unit; the detection cell is composed of a plurality of columnar tanks and a pipeline, and the detection cell is provided with an air inlet and an air outlet; the columnar tank is divided into a head end and a tail end, the head ends of the plurality of columnar tanks are aligned and arranged in parallel, and the plurality of columnar tanks are interconnected through pipelines, the head end of the columnar tank is provided with an adjustable ultraviolet light source, and the head end and the tail end are each provided with an ultraviolet sensor; the ultraviolet sensor is connected to the signal acquisition unit, and the information acquisition unit is connected to the wireless transmission unit. The present invention realizes a device to detect a plurality of SF6 decomposition components simultaneously by optimizing the design of the gas cell, and the detection signal can be transmitted in real time by using the wireless transmission unit, so as to monitor the SF6 decomposition components in real time.

Solid state lighting devices including light emitting diodes (LEDs), and more particularly, include a reflector for a support structure in an LED package (48). The support structure includes an arrangement of dielectric reflectors (18) relative to conductive traces (14) and LED chips (36) patterned on the submount (12). The dielectric reflector includes a plurality of dielectric layer structures that form a distributed Bragg reflector (DBR) or in some cases an aperiodic Bragg reflector. Such dielectric reflectors (18) may be disposed on one or more conductive traces (14) and on portions of the submount (12) that are not covered by the conductive traces to provide increased reflectance over various wavelengths provided by the LED chip, including wavelengths in the ultraviolet (UV) spectrum. Each disclosed LED package (34, 42, 44, 46, 48, 50, 52, 54, 56, 60, 62, 64) is also provided with a cover structure (38).

Disclosed herein are visibly transparent photovoltaic devices, such as color-neutral visibly transparent photovoltaic devices. A color-neutral visibly transparent photovoltaic device includes a visibly transparent substrate and a first visibly transparent electrode coupled to the visibly transparent substrate. The device also includes a second visibly transparent electrode and a visibly transparent photoactive layer between the first visibly transparent electrode and the second visibly transparent electrode. The visibly transparent photoactive layer is configured to convert at least one of NIR light or UV light into photocurrent and is characterized by an absorption spectrum with a peak in the NIR or UV spectrum. The device further includes a visibly absorbing material characterized by a second absorption spectrum with a second peak in the visible spectrum, where the second absorption spectrum is complementary to the absorption spectrum.

An optical system and design can image objects under inspection in the ultraviolet (UV) and visible spectrums. This imaging can be used to detect both large defects in the visible spectrum and small defects in the UV spectrum in a single pass while reducing the time and cost of the inspection process. The optical system may include an off-axis reflective focusing system for aberration correction with a beamsplitter to separate the visible spectrum from the UV wavelengths. Cameras may then image visible and UV wavelengths.

The embodiment of the present invention provides a method, device, computer equipment and medium for monitoring water quality anomalies, which relates to the technical field of water quality monitoring, wherein the method comprises: obtaining full spectrum data of a water body to be monitored; obtaining a water source label and environmental data of the water body to be monitored; inputting the water source label, environmental data and ultraviolet spectrum into a first water quality analysis model to obtain the abnormal probability of ultraviolet spectrum data; inputting the water source label, environmental data and visible spectrum into a second water quality analysis model to obtain the abnormal probability of visible spectrum data; calculating the first statistical index of the ultraviolet spectrum; calculating the second statistical index of the visible spectrum; determining the abnormal score of the water body to be monitored according to the abnormal probability of the ultraviolet spectrum data, the abnormal probability of the visible spectrum data, the first statistical index and the second statistical index, wherein the magnitude of the abnormal score is proportional to the degree of water quality abnormality. This scheme is conducive to improving the accuracy of water quality monitoring.

A semiconductor device having a plurality of layers deposited on a substrate and extending in at least one lateral aspect defined by a lateral axis thereof comprises at least one EM radiation-absorbing layer deposited on a first layer surface and comprising a discontinuous layer of at least one particle structure comprising a deposited material. The at least one particle structure of the at least one EM radiation-absorbing layer facilitates absorption of EM radiation therein in at least a part of at least one of a visible spectrum and a UV spectrum while substantially allowing transmission of EM radiation therein in at least a part of at least one of an IR and an NIR spectrum.

The application discloses an oily structural color pigment ink and application thereof, and belongs to the technical field of photonic crystal material preparation. Components of the oily structural color pigment ink include at least one block polymer brush, at least one resin or at least one precursor of the resin, and at least one organic solvent. The oily structural color pigment ink provided by the application is a layered structural color material obtained by self-assembly based on the microphase separation principle of the block polymer brush. The provided oily structural color pigment ink can be compatible with most common pigment coloring methods, including but not limited to screen printing, spraying, inkjet printing and intaglio printing. The structural color of the oily structural color pigment ink is not limited to the visible light band, and covers ultraviolet spectrum, visible spectrum and infrared spectrum, and the wavelength range of the covered electromagnetic spectrum is 200 nm to 2000 nm.

The invention relates to a GIS equipment fault detection method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: inputting target gas in GIS equipment into an ultraviolet spectrum detection module to obtain an ultraviolet absorption spectrum of the target gas, and analyzing to obtain components and a mixing ratio of the target gas based on the ultraviolet absorption spectrum; under the condition that the change of the mixing proportion relative to the reference mixing proportion exceeds a preset proportion range, inputting the target gas into an infrared spectrum detection module to obtain an infrared absorption spectrum of the target gas, and analyzing to obtain the corresponding concentration of the components of the target gas based on the infrared absorption spectrum; and under the condition that the change of the corresponding concentration relative to the reference concentration exceeds a preset concentration range, determining that the GIS equipment has a fault. By adopting the method, the accuracy of GIS equipment fault detection can be improved.

The utility model relates to the technical field of gas analyzers, and discloses an integrated ultraviolet gas analyzer which comprises a case internally provided with an upper-layer space and a lower-layer space; the upper-layer space is provided with a heat tracing pipe connecting unit, a high-temperature gas detection gas pool unit, a calibration and gas path execution unit and a pump unit; the lower layer space is provided with a mainboard control unit, a power supply unit, an ultraviolet spectrometer and an ultraviolet light source; wherein the high-temperature gas detection gas cell unit comprises a gas cell, the gas cell is provided with a light inlet and a light outlet, an ultraviolet light source is connected with the light inlet, and an ultraviolet spectrometer is connected with the light outlet; and the calibration and gas path execution unit is connected with the gas pool and is used for calibrating the analyzer. According to the utility model, a plurality of units of the gas analyzer are designed into the case with the double-layer structure, so that the gas analyzer is compact in structure, can be suitable for general measurement sites, and also can be suitable for mobile monitoring and industrial sites with limited space.

An ultraviolet (UV) light source includes a light emitting element that is configured to generate light of a first frequency, a nonlinear optical element that is configured to receive the light of the first frequency from the light emitting element and generate UVC or far-UVC light of a second frequency from the light of the first frequency, and an output coupling element that is configured to selectively outcouple the UVC or far-UVC light from the nonlinear optical element as output light. Related light sources and fabrication methods are also discussed.

The utility model provides an analytical instrument for detecting the concentration of dissolved ozone water according to an ultraviolet spectrum principle, which comprises a dissolved ozone water analyzer water inlet, an ozone water detection sensor and an ozone water flowmeter, the ozone water detection sensor is formed by combining an ultraviolet LED light source, an ultraviolet light lens, a refraction sheet, a reference light photoelectric receiver, a polytetrafluoroethylene detection chamber, a sapphire lens, a sensor water inlet, a sensor water outlet and a sampling light photoelectric receiver, and the sensor water inlet is communicated and connected with a water inlet of the dissolved ozone water analyzer through a first three-way connector; according to the design, the problems of low ozone concentration measurement accuracy and short service life in the prior art are solved, the concentration of ozone dissolved water can be accurately measured through the ultraviolet spectrum principle and the double-light-path detection technology, and the zero point automatic correction function is achieved.

The invention discloses oily structural color pigment ink and application thereof, and belongs to the technical field of preparation of photonic crystal materials. The oily structural color pigment ink comprises the following components: at least one block polymer brush, at least one resin or at least one resin precursor and at least one organic solvent. The oily structural color pigment ink provided by the invention is a layered structural color material obtained by self-assembly based on a block polymer brush microphase separation principle. The provided oily structural color pigment ink can be compatible with most of common pigment coloring methods, including but not limited to silk-screen printing, spraying, ink-jet printing and intaglio printing. The structural color of the oil-based structural color pigment ink is not limited to a visible light wave band and covers an ultraviolet spectrum, a visible spectrum and an infrared spectrum, and the wavelength range of the covered electromagnetic spectrum is 200-2000 nm.

The present invention belongs to the technical field of related calculations of molecular spectral radiation, and discloses a method, system and device for measuring the ultraviolet spectral radiation characteristics of OH in non-equilibrium flow. A simulation software is used to simulate the distributions of the temperature, pressure and component concentration of the gas flow field of a high-speed aircraft flying at high altitude; according to the flow field distribution, the flow field is stratified along the determined line-of-sight direction to obtain the temperature, pressure and concentration distributions of each layer; the chemical reaction rate in the OH collisional-radiative model is calculated; the flow field parameters are brought into the collisional-radiative model, and programming is used to calculate the number density of different vibrational energy levels of OH(A); according to the apparent integration method, programming is used to calculate the spectral radiance of OH in the tail flame or shock layer. The present invention takes into account the influence of the refined energy level structure of the OH molecule on the chemical reaction rate in the collisional-radiative model, thereby greatly improving the accuracy of related calculations and more accurately giving the calculation results of the OH spectral radiation characteristics in non-equilibrium flow.

A system for decontaminating / neutralizing breathable air and surfaces in an occupied enclosed space, such as a building, aircraft, vehicle, or greenhouse, involves mounting an atmospheric hydroxyl radical generator along the inner surface of the atmospheric hydroxyl radical generator, which has opposing air inlets and outlets. The hydroxyl radical generator includes a polygonal housing that supports a plurality of spaced crystal-spliced ​​UV optics. These are medical-grade, pure quartz tubular optics that emit / radiate ultraviolet light in the nanometric wavelength / UV spectrum between 100 and 400 nanometers to deactivate and neutralize atmospheric chemicals and pathogens in the breathable air and on surfaces. The hydroxyl radicals come into contact with the walls of the reaction chamber housing.Hydroxyl radicals are created and excited to react rapidly with impurities, including VOCs, viruses, bacteria, and fungi, rendering them inactive and neutral. Breathable air passes through the polygonal casing and is decontaminated and neutralized of impurities before entering the occupied space.

The invention provides a method for constructing rapid initial correction of ultraviolet limb cut height based on machine learning. The method comprises the following steps: acquiring an ultraviolet spectrum detection data file, and extracting dates, longitude and latitude cut height sequences and geometric parameters; extracting environmental parameters of the MLS in real time according to the extracted date, latitude and longitude and geometric parameters, and calculating an atmospheric refracted light deflection angle; performing preliminary tangent height correction on height information in the ultraviolet spectrum detection data according to the atmospheric refracted light deflection angle to obtain a height value after preliminary correction; and performing model training, verification and testing by taking date, latitude and longitude and geometric parameters as input of machine learning and taking the preliminarily corrected height value as an output label to obtain a nonlinear tangent height correction model. The ultraviolet rapid edge cutting correction model is simpler, more convenient, quicker and high in business performance.

This invention proposes a sunscreen composition, its preparation method, and its application in cosmetics, belonging to the fields of medical, dental, or cosmetic formulations. The sunscreen composition contains components of boron nitride-titanium dioxide-encapsulated silica and plant extracts; the plant extracts are loaded onto the boron nitride-titanium dioxide-encapsulated silica; the plant extracts are a combination of Aspergillus niger fermented Sophora japonica flower extract and Scutellaria baicalensis extract. This invention achieves highly efficient sun protection through a multi-mechanism synergy: the porous silica-titanium dioxide core-shell structure provides physical scattering, boron nitride doping enhances reflection, and the loading of the Aspergillus niger fermented Sophora japonica flower and Scutellaria baicalensis extract achieves chemical absorption and antioxidant protection through a synergistic effect, resulting in highly efficient protection against the entire UV spectrum. This system avoids the use of chemical sunscreens, is highly safe, and has a pleasant skin feel.

The invention discloses a transformer fault detection method and device based on an ultraviolet spectrum, a medium and equipment, and the method comprises the steps: additionally installing an ultraviolet light-emitting detection device in a transformer needing fault detection, so as to enable the ultraviolet light-emitting detection device to carry out the ultraviolet light-emitting detection of transformer oil at a corresponding position; in the operation process of the transformer, carrying out ultraviolet luminescence detection on the transformer oil through the ultraviolet luminescence detection device to obtain an ultraviolet luminescence detection result corresponding to the transformer; based on the ultraviolet luminescence detection result, determining a real-time ultraviolet spectrogram corresponding to the transformer; and obtaining a fault ultraviolet spectrogram of at least one fault corresponding to the transformer, and carrying out fault detection on the transformer based on the fault ultraviolet spectrogram and the real-time ultraviolet spectrogram. The problems that a traditional breakdown experiment is hysteretic and insensitive to component changes, and an existing spectrum detection technology is lack of special methods and standards are solved.

The application discloses a naked-eye identification, ultraviolet and fluorescent probe, a preparation method and application thereof. The probe is prepared from 5-methyl-2-aminopyridine and 5-chlorosalicylaldehyde as raw materials, a reducing agent is added after a period of reaction, and the probe can be obtained through purification. 3+ Fe 2+ and Ag + can be naked-eye identified under ultraviolet light. 3+ Fe + and Ag 3+ can be identified and detected by ultraviolet spectrum. 3+ Fe + content can be identified and detected by fluorescence spectrum. The probe is a small molecular compound, simple to synthesize, and has the advantages of good selectivity, high sensitivity, fast response, low detection limit and real-time detection, and has potential application in the identification and content detection of iron ions and silver ions in medicines, various water areas, soil and the like.

The invention discloses a sharp-line-free deuterium tungsten standard intensity lamp, which realizes coaxial coupling output of a deuterium lamp and a tungsten lamp through a telescopic reflector, and completes 190-3000nm broadband sharp-line-free spectrum output in cooperation with a scanning monochromator. A double-light-source short-focus lens focusing system is adopted to reduce the size of a focus point, and a high-precision telescopic regular quadrangular prism (the upper half part of which is cut along a diagonal line and is integrated with a reflector with an aluminum-plated surface) is combined to control light path switching, so that a deuterium lamp characteristic sharp line spectrum is eliminated; through seamless splicing of tungsten lamp blackbody radiation and deuterium lamp continuous ultraviolet spectrum, an output wave band covers deep ultraviolet to mid-infrared (190-3000 nm). The spectrum continuity of the light source is larger than 95%, the stability reaches + / -1% / h, the size is smaller than or equal to phi 80mm * 150mm, a multi-lamp combination calibration scheme can be replaced, and the light source is suitable for spectrum response calibration of a spectrum analyzer and environment monitoring equipment.

The utility model discloses a UV (ultraviolet) film laminating machine for anti-counterfeit label paper, which belongs to the technical field of UV film laminating machines for anti-counterfeit label paper, and adopts the technical scheme that the UV film laminating machine comprises a base, an adjusting component is arranged on the rear side of the top of the base, a reflecting cover is arranged in the adjusting component, a lamp tube is bolted in the reflecting cover, and the lamp tube is connected with the lamp tube. A reflecting cover is arranged on the top of the base, a connecting assembly is arranged on the outer side of the reflecting cover, and an operation table is arranged on the front side of the top of the base, so that the problem that when an existing UV laminating machine for the anti-counterfeit label paper solidifies UV glue between a laminating material and the anti-counterfeit label paper, the anti-counterfeit label paper and the UV glue are different in material can be solved. The problems that due to the fact that the distance between a UV lamp and a film coating material is inconvenient to adjust, the UV spectrum coverage rate is insufficient, the UV glue curing efficiency of the UV lamp is needed, when the reflection efficiency of a reflection cover plate is low, a reflection lampshade is inconvenient to disassemble, and when the reflection lampshade is replaced, the replacement time is prolonged due to the tedious disassembly process, and the working efficiency of the reflection lampshade is affected are solved.