67 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 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.

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).

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.

An oily structural color pigment ink and the use thereof. 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 is a layered structural color material obtained by self-assembly on the basis of a micro-phase separation principle of a block polymer brush. The provided oily structural color pigment ink can be compatible with most of the common pigment coloring methods, including but not limited to screen printing, spraying, inkjet printing, and gravure printing. The structural color of the oily structural color pigment ink is not limited to a visible light waveband, but instead also covers a ultraviolet spectrum, a visible spectrum and an infrared spectrum, and the wavelength range of the electromagnetic spectrum covered by the structural color is 200-2000 nm.

The invention relates to an engine tail flame temperature measuring method and device based on ultraviolet spectrum broadening, and the method comprises the steps: simulating an ideal combustion process to generate an engine tail flame ultraviolet visible light-emitting spectrum, and collecting an ideal environment temperature before combustion; the ultraviolet visible light emission spectrum of the engine tail flame comprises an ideal environment spectrum before combustion and an ideal tail flame spectrum during combustion; collecting an actual environment spectrum and an actual tail flame spectrum; obtaining ideal environment spectrum data, actual environment spectrum data, ideal tail flame spectrum data and actual tail flame spectrum data; obtaining a first incidence relation between the temperature and the ultraviolet spectrum broadening; obtaining an actual environment temperature based on the actual environment spectrum data and the first association relationship, and obtaining a calculation error based on the actual environment temperature and an ideal environment temperature before combustion; and the engine tail flame temperature is obtained based on the actual tail flame spectrum and the first incidence relation, the engine tail flame temperature is corrected based on the calculation error, and measurement of the engine tail flame temperature is completed.

The utility model discloses an ultraviolet protein detection device of a Y-shaped optical fiber LED light source. The ultraviolet protein detection device comprises a power supply module, an ultraviolet spectrum detection unit, a flow cell and an upper computer, the power supply module comprises a 12V direct current circuit, a 5V direct current circuit and a 3.3 V voltage stabilizing circuit; the ultraviolet spectrum detection unit comprises an LED drive circuit, an LED lamp, a pre-amplification circuit, a filter circuit, an AD conversion circuit and a microcontroller MCU. The LED driving circuit drives the LED lamp, the LED lamp emits two beams of ultraviolet light, one beam serves as an absorption light source and irradiates the ultraviolet detector through the flow cell, and the other beam serves as a reference light source and directly irradiates the ultraviolet detector; and the upper computer is connected with the MCU and is used for receiving data, drawing a spectrogram on a screen, editing the spectrogram and storing the data. The ultraviolet protein detection device with the Y-shaped optical fiber LED light source has the advantages that the anti-interference capability of the detection device can be improved, the measurement precision and sensitivity are higher, the stability and the adaptability are good, and the like.

The invention discloses a spectrograph capable of directly detecting NO2. The spectrograph comprises an optical fiber connecting seat, a slit, a concave holographic grating, a first CCD detector and a second CCD detector. The pulse xenon lamp is controlled by the MCU main control board and flickers at a fixed period and frequency, a flickering light source is coupled through the optical fiber and transmitted to the optical fiber base, then the light source penetrates through a slit in front of the optical fiber base and enters the concave holographic grating, ultraviolet light with different wavelengths is formed after the light source is diffracted by the concave holographic grating and irradiates an optical array receiving surface of the CCD detector, and the CCD detector is used for detecting the ultraviolet light. And the signal is converted into a digital signal through a control panel of the CCD detector 300, and is transmitted to a computer terminal through an ADC digital conversion module to form an ultraviolet spectrum. The two CCD detectors are adopted for splicing, the spliced CCD detectors completely cover the detection wavelengths of NO, SO2 and NO2, and compared with a single CCD detector, the cost is greatly reduced.

This invention discloses a combustion environment aerodynamic parameter measurement system and method based on the strong absorption advantage of ultraviolet (UV) spectroscopy, belonging to the field of combustion diagnostic technology. The measurement system includes: a fiber-optic coupled in-situ measurement unit for fiber-optic coupling of a UV beam emitted from a UV light source to obtain fiber-optic coupled absorption spectral signals of various small-area points; a UV absorption measurement and control analysis unit for obtaining the first UV absorption spectrum of each small-area point; a simulation unit for obtaining the second UV absorption spectrum of each small-area point; a training unit for training a neural network using the second UV absorption spectrum; and a calculation unit for calculating combustion environment aerodynamic parameters using the first UV absorption spectrum and the trained neural network. This invention can improve the accuracy of short-path probe measurements of combustion environment aerodynamic parameters.

The invention provides a method for rapidly detecting the content of total flavonoids in ginkgo biloba extract based on ultraviolet spectrum, which comprises the following steps: taking a ginkgo biloba extract sample, and treating by adopting an ultrasonic-assisted extraction method to prepare flavone extract liquor; scanning the flavone extracting solution by using an ultraviolet-visible spectrophotometer to obtain ultraviolet absorption spectrum data of the flavone extracting solution in a characteristic wavelength range; and inputting the obtained ultraviolet absorption spectrum data into a pre-generated general flavone content prediction model, and directly outputting to obtain the content value of general flavone in the ginkgo leaf extract. According to the method, interference of coexisting substances in a traditional ultraviolet method is effectively overcome through a chemometrics algorithm, detection is completed within a few minutes, and the accuracy of the method is equivalent to that of a high performance liquid chromatography. The method is easy and convenient to operate, low in cost, high in efficiency and particularly suitable for rapid quality control and raw material screening in the production process of the ginkgo leaf extract.