53 results about "Uv spectrum" patented technology

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.

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.

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.

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.

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.

This invention relates to the field of atmospheric trace gas detection technology, specifically disclosing an ultra-high sensitivity online detection system and method for atmospheric BrO radicals. The ultra-high sensitivity online detection system for atmospheric BrO radicals includes an optical cavity, a 340 nm ultraviolet light source, an ultraviolet optical fiber, an ultraviolet spectrometer, and a sampling unit. The optical cavity has an inlet and an outlet, and contains an ultraviolet optical resonance region. Ultraviolet light emitted from the ultraviolet light source is reflected multiple times in the ultraviolet optical resonance region and then transmitted into the ultraviolet optical fiber. The ultraviolet optical fiber is used to superimpose all transmitted light in the ultraviolet band and transmit it to the ultraviolet spectrometer. The sampling unit is used to directly input the gas to be measured into the optical cavity, or to selectively remove BrO radicals from the gas to be measured before inputting it into the optical cavity. This invention achieves ultra-high sensitivity online point detection of BrO radicals in the atmosphere. Compared with existing technologies at home and abroad, its BrO detection limit is better than 1 pptv, reaching the sub-pptV level, demonstrating excellent detection performance.

The invention relates to the technical field of surface quality detection, in particular to a sliding plate coating layer multispectral imaging quality detection system and a method thereof.The sliding plate coating layer multispectral imaging quality detection system comprises spraying equipment, a UV-LED irradiation system, a multispectral imaging system and a defect image processing system.The light outlet of the UV-LED irradiation system is provided with an imaging window used for irradiating a sliding plate coating layer processed by the spraying equipment; the multi-spectral imaging system is arranged in an imaging window and collects UV spectrum and NIR near infrared spectrum data, the defect image processing system processes the spectrum data through ratio operation, logarithm transformation and wavelet transformation, extracts characteristic spectrums and inputs the characteristic spectrums into a defect database, classification training is conducted on the defect database through a transfer learning model, and the defect data is obtained. The defect data storage unit stores a defect database and a classification result, and the system improves the comprehensiveness and accuracy of defect detection of the coating layer of the sliding plate by combining the complementary advantages of UV and NIR near infrared spectrums through a multispectral imaging technology.

The application 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: a multispectral and high-resolution fusion camera combination model is used to synchronously collect wafer two-dimensional images under visible light, infrared and ultraviolet light spectrums; surface three-dimensional topographic data are obtained by using a structured light three-dimensional reconstruction technology; an adaptive noise suppression algorithm is applied; noise characteristics are identified and filter parameters are dynamically adjusted through frequency domain analysis; targeted noise reduction is realized; a multiscale feature pyramid and a quantum dot label recognition fusion model are constructed; defect outlines and material heterogeneous regions are extracted layer by layer; microstructure characteristic parameters are extracted in combination with quantum dot fluorescence labeling technology; micro features and three-dimensional topographic data are mapped to a multi-modal space model; wafer three-property parameters are generated; a three-dimensional evaluation system is established; quality grades are comprehensively judged; and an analysis report is outputted, so that the precision and efficiency of wafer quality detection are significantly improved.

A system for decontaminating / neutralizing breathable air and surfaces in an occupied enclosed space, i.e., agricultural greenhouse, includes mounting an atmospheric hydroxyl radical generator along an inside surface of the atmospheric hydroxyl radical generator having respective opposite air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics, which are tubular, medical grade pure quartz optics to emit / irradiate ultraviolet in the nanometer wavelength / ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

The application provides a municipal sewage COD intelligent online monitoring method and system based on ultraviolet spectrum, relates to the technical field of water quality monitoring, and the application obtains a COD sequence of a target detection point in a preset target time window and an absorbance vector of a current detection water body in an ultraviolet band; performs discrete difference calculation on the absorbance vector to obtain a slope vector; calculates the Euclidean distance between each local extreme value in an extreme value vector and each local slope in the slope vector to obtain a joint state vector; based on a plurality of historical joint state vectors in a preset data update buffer pool, the Mahalanobis distance between the joint state vector and each historical joint state vector is calculated; the Mahalanobis distance is substituted into a preset Gaussian kernel density function to obtain a current COD concentration value. Realize adaptive high-precision real-time monitoring of complex component sewage.

The invention discloses a method for analyzing and determining 4-nonylphenol, bisphenol A and pentachlorophenol in water, which comprises the following steps of: eluting impurities in a solid-phase extraction column by using a reagent, adding a water sample into the solid-phase extraction column, leaving a compound to be detected in a filler of the solid-phase extraction column, discarding water, eluting the compound to be detected in the filler by using an organic reagent, and detecting the content of 4-nonylphenol, bisphenol A and pentachlorophenol in the solid-phase extraction column. The method comprises the following steps of: adding 4-nonylphenol and bisphenol A into an organic solvent, concentrating, separating through liquid chromatography, detecting pentachlorophenol through an ultraviolet detector, detecting 4-nonylphenol and bisphenol A through a fluorescence detector, and determining nature and quantifying peak area through retention time of an ultraviolet spectrogram and a fluorescence spectrogram. The method overcomes the defect that three traditional compounds need to be independently analyzed and determined, is simple and convenient to operate and easy to implement, does not need expensive materials, can be used for obtaining reagent consumables in situ, saves the manpower and material resource cost, and improves the efficiency of analysis and determination operation.

The invention provides a method for degrading bio-based polycarbonate by utilizing a photoreaction principle, and belongs to the field of degradation of bio-based polycarbonate. The invention aims to solve the problem of how to obtain proper bio-based polycarbonate conditions and methods and accelerate the degradation of the bio-based polycarbonate. An ultraviolet spectrogram, an infrared spectrogram and an X-ray spectrogram are used for proving the contained groups and various ratios, ultraviolet spectrophotometry and infrared spectrophotometry tests are carried out on the basis of the groups and the ratios, then the optimal ultraviolet wavelength and the optimal infrared wavelength in corresponding photodegradation are obtained and are 550 nm to 580 nm, 2250 cm <-1 >, 1500 cm <-1 > or 1250 cm <-1 > respectively, and the optimal ultraviolet wavelength and the optimal infrared wavelength are used for photodegradation. The bio-based polycarbonate is degraded according to the two optimal wavelength ranges; compared with the prior art, the method has the advantages that the individuation is stronger, the optimal illumination wavelength range of the bio-based polycarbonate prepared by different methods can be obtained, the degradation effect is better, and the practical application value is realized.