129 results about "Spectral absorption" patented technology

The invention belongs to the technical field of deep learning and image processing, and discloses an underwater image enhancement method based on tensor learnable prior. By designing learnable prior based on a Tensor Train kernel, explicit modeling of the underwater degradation law is realized. The four Tensor Train kernels correspond to the height, the width, the channel and the image block modality respectively, so that the system can simultaneously describe the vertical structure change, the horizontal scattering, the spectral absorption difference and the regional scale attenuation, thereby obviously enhancing the description capability for the underwater multimode degradation. The Tensor Train kernel is dynamically generated based on the kernel prediction sub-network, the prior structure of the method can be adaptively adjusted along with the input image, and the stability and generalization ability of the enhancement result are improved. According to the method, color shift is effectively corrected and scattering blur is inhibited while the structure edge is kept, so that the enhancement process is changed from traditional black box type mapping to physical consistency structured reasoning, and more natural colors, higher contrast and better detail recovery effects are obtained in a complex turbid environment.

The invention discloses a real-time quantitative calibration spectrum on-line detection device and a use method thereof, a standard substance with a known concentration is accurately injected into a mixer and is mixed with a reaction liquid on line, and then a spectrum detector obtains spectrum absorption data of the mixed liquid; on the basis of the spectral absorption intensity linear superposition relation between the standard substance and the reaction liquid and the metering relation between the target product and the injected target product, online correction is carried out, and finally the concentration value of the target product is obtained. The online standard sample injection and dynamic online calibration technology is introduced, so that the problems of low quantitative precision, manual sampling lagging and the like in chemical reaction monitoring are solved, and the online standard sample injection and dynamic online calibration technology is particularly suitable for the fields of photochemical synthesis, continuous pharmacy and the like with strict process analysis timeliness requirements.

The invention provides a thermal injection gas temperature measurement method and system based on spectral absorption, and the method comprises the steps: obtaining absorption spectrum signals before and after ignition of thermal injection gas, and carrying out the baseline correction of the absorption spectrum signals after ignition based on the absorption spectrum signals before ignition; performing environmental absorption interference processing on the corrected post-ignition absorption spectrum signal to obtain a target absorption signal reflecting the self absorption characteristic of the thermal injection gas; based on the target absorption signal, total integral absorbance in the two different measurement frequency bands is determined, and according to the ratio of the total integral absorbance of the two different measurement frequency bands, the pre-established mapping relation between the total integral absorbance ratio and the temperature is combined, and the temperature of the thermal injection gas is obtained through inversion. The invention provides a thermal injection fuel gas temperature measurement method based on a combined absorption spectral line so as to solve the problems of alignment of absorption signal base lines, interference removal of absorption components outside fuel gas jet flow, temperature inversion based on the combined absorption spectral line and the like, and a high-temperature fuel gas jet flow temperature measurement result is obtained.

The invention discloses an on-orbit spectrum precision test method and equipment for an ultraviolet hyperspectral remote sensor, and the method comprises the steps: selecting a high-resolution reference solar spectrum higher than the spectral resolution of the ultraviolet hyperspectral remote sensor, and calculating a reference standard solar spectrum according to the high-resolution reference solar spectrum; establishing a reference wavelength library according to the reference standard solar spectrum of the ultraviolet band, and selecting a standard absorption line meeting conditions as a reference wavelength; screening an absorption peak center position of the observation spectrum, finding an absorption peak center closest to the reference wavelength in combination with the reference wavelength library, and constructing a peak searching database of the absorption peak center of the discrete spectrum; and calculating a difference value between the central wavelength calculated according to the peak searching database and the corresponding reference wavelength to obtain the spectrum calibration precision of the ultraviolet hyperspectral remote sensor. According to the method, the precision difference of the spatial dimension can be identified, the distribution of the overall system deviation is quantified, and reliable support is provided for on-orbit precision verification and performance optimization of the ultraviolet hyperspectral remote sensor.

The invention discloses a photovoltaic power generation forecasting method based on spectrum forecasting, and aims at solving the problem that errors are large due to the fact that only temperature and total irradiance are considered in an existing photovoltaic power generation forecasting method. The method comprises the following steps: downloading global forecast data and carrying out lattice point coding conversion; then carrying out dynamic downscaling and calculating future key meteorological variables; calculating the spectral optical thickness of each atmospheric component by using the spectral absorption and scattering coefficients of different gas components in the HITRAN database, and obtaining direct and scattered spectral irradiance according to the spectral optical thickness; carrying out calculation result verification and artificial intelligence correction by utilizing a solar spectrum radiometer; calculating generated power of different wavelengths; and calculating the final generation power through integral calculation in combination with the loss of other parts of the photovoltaic module. And forecasting a radiation spectrum at a future moment according to different forecasted meteorological variables, and converting radiation into power generation power according to the spectrum, thereby realizing refined conversion of optical power.

The invention discloses a target infrared radiation characteristic calculation method based on a neural network, and belongs to the field of aero-engines. Constructing a first BP neural network model; constructing a second BP neural network model; a detection point is set, rays are emitted to a target, and the positions of the rays are judged in real time through the second model: if the output label is 0, the rays continue to be transmitted, and radiation calculation is not triggered; if the output label is 1, calling the first BP neural network model to calculate a spectral absorption coefficient of a current wave band; judging the ray absorption state based on the spectral absorption coefficient; if the ray is not absorbed, repeating the step of judging the position of the ray, otherwise, terminating the current ray calculation; and counting radiation data of absorption positions of all the rays until all the rays are absorbed in all the wave bands, and outputting target infrared radiation characteristics. According to the method, triple contradictions of spectral precision-computational efficiency-path optimization are broken through through a dual-neural network collaborative architecture.

According to the photo-thermal evaporation-photocatalysis hydrogen production system, hydrogen production can be carried out while seawater desalination is achieved through a photo-thermal evaporation-photocatalysis hydrogen production composite material, photo-thermal conversion can be achieved through carbonized wood (wood subjected to surface carbonization treatment), and seawater is evaporated to obtain water vapor; the water vapor participates in hydrogen production reaction on the surface of the photocatalytic hydrogen production catalyst as a reaction raw material. The photo-thermal evaporation-photocatalytic hydrogen production composite material provided by the invention not only can broaden spectral absorption, but also can expand the absorption wavelength of a sunlight spectrum to visible light and near-infrared regions; meanwhile, the interface reaction resistance is also reduced, and electron-hole separation and transfer are optimized, so that the utilization rate of light energy is improved, and the yield of hydrogen is further improved.

This invention belongs to the field of food or beverage processing technology, specifically relating to an intelligent evaluation and brewing control system for tea infusion quality based on multi-source sensor fusion. The system uses a multi-wavelength optical sensor array and distributed temperature sensors to acquire spectral absorption peak shift characteristics and temperature gradient vectors, respectively, and then concatenates them to construct a three-dimensional tensor containing time, spatial height, and wavelength dimensions. This three-dimensional tensor is input into a spatiotemporal graph convolutional network. Its spatial graph convolutional layer extracts spatial features using temperature nodes at different height levels as vertices and thermal conduction physical relationships as edges; the temporal convolutional layer extracts temporal features; and the fully connected layer outputs the predicted solute release rate and the deviation value of the target temperature gradient. The controller generates pulse-width modulation signals based on the deviation values ​​to adjust the heating plate power and the timing of the water injection valve. This invention jointly analyzes heat distribution and solute concentration changes, and corrects control commands based on the physical release state of the solute, ensuring that temperature field changes match solute diffusion.

The invention relates to the technical field of oil type gas monitoring, in particular to an oil type gas laser monitoring and early warning device and method, and the device comprises a processor control panel, a laser driver, a laser device group, a light path change-over switch, a diffusion type light absorption cell and a tuning fork detector; emergent laser with different gas spectrum absorption wavelengths is generated; switching each path of laser beam to a diffusion type absorption cell; respectively demodulating based on the acquired acquisition signals to obtain second harmonic signal voltages of optical signals of methane, ethane and hydrogen sulfide gas; inputting the second harmonic signal voltage of the optical signal absorbed by the to-be-detected gas into the residual neural network, identifying the methane and ethane gas overlapping spectrum, and outputting the methane and ethane gas concentration in the to-be-detected gas; and generating a multi-parameter early warning signal according to the methane and ethane gas concentrations and the hydrogen sulfide concentration. The light absorption detection can be accurately carried out on methane, ethane and hydrogen sulfide in the oil type gas, and the methane and ethane gas overlapping spectrum can be effectively identified.

The invention discloses a self-powered ferroelectric energy converter based on a triboelectric-photoelectric coupling effect, and belongs to the technical field of energy conversion and photoelectric detection. According to the converter, an Ag2O-BNT (Bi3. 15Nd0. 85Ti3O12) composite ferroelectric material prepared by a sol-gel method is adopted to form a ferroelectric film structure, and electrodes are connected to the top and the bottom of the converter. According to the structure, the transfer amount of friction induced charges can be modulated through photon-generated carriers, and self-powered ultraviolet-visible light detection and mixed energy collection are achieved. Under the illumination condition, the voltage signal of the photoelectric detector is obviously reduced, and the current signal of the hybrid energy collection device is improved. The invention has the advantages of low cost, high response speed, wide spectrum absorption and the like, and can be widely applied to flexible electronic and wearable equipment.

The invention relates to the technical field of spectrum detection of pesticide residues, and discloses a succinate dehydrogenase pesticide residue screening method. The method comprises the following steps: carrying out feature standardization processing on a multi-source spectral data set, unifying feature dimensions of each spectral source, removing feature conflict dimensions, and carrying out duplicate removal to obtain an integrated spectral data set; extracting a pesticide residue characteristic field, a spectral absorption peak field and a pesticide category field, and segmenting data characteristics to generate a characteristic screening data set; mapping the original absorption peak and the target absorption peak to a standard spectral coordinate system to generate a spectral feature distribution map; classifying and aggregating spectral absorption behaviors according to pesticide categories, evaluating absorption activeness of different categories of pesticides in a specific characteristic period of a target spectral region, and generating a classification trend index. The method can solve the problems of difficult integration of multi-source spectral data, inaccurate feature extraction and the like, and improves the consistency and accuracy of screening.

This application discloses a method for simultaneous monitoring and intelligent calibration of multi-component gas NDIR, relating to the field of gas detection technology. It solves the technical problem of low accuracy in gas concentration detection results caused by overlapping absorption spectra between different gases in existing non-dispersive infrared gas detection technologies. The method includes: determining several first and second detection gases based on spectral absorption data; a first wavelength channel corresponding to the first detection gas; calculating the gas concentration of the first detection gas corresponding to the first spectral signal based on the first spectral signal and the incident spectral signal; selecting several interfering gases corresponding to each second detection gas based on the gas concentrations corresponding to the several first detection gases, and determining the second wavelength channel of the second detection gas; calculating the corresponding gas concentration of the second detection gas based on the second spectral signal, the incident spectral signal, and the gas concentrations corresponding to the interfering gases; thus improving the detection accuracy of gas concentration.

The invention belongs to the technical field of photothermal conversion materials, and discloses a preparation method and application of an inorganic-organic hybrid polyoxotungstate photothermal material with wide spectrum absorption. The structural formula of the photo-thermal material is Per4W10O32, the crystal structure belongs to a triclinic system, the space group is P-1, and the photo-thermal material has specific unit cell parameters. The preparation method comprises the following steps: oxidizing perylene molecules through constant current electrolysis in a mixed solvent system containing perylene molecules and a decatungstate precursor in an electrochemical oxidation manner, and assembling the oxidized perylene molecules with decatungstate anions to form bulk crystals; the photo-thermal material has continuous strong absorption in a region from ultraviolet light to short wave infrared, the photo-thermal conversion efficiency is as high as 98.24%, when the photo-thermal material is applied to the fields of solar driven interface photo-thermal evaporation and water treatment, the evaporation rate of a two-dimensional system is 1.89 kg.m <-2 >. H <-1 >, the evaporation rate of a three-dimensional hydrogel system is increased to 3.02 kg.m <-2 >. H <-1 >, salt deposition can be inhibited in long-term seawater desalination operation, and the photo-thermal material has a good application prospect. Fresh water quality meets drinking water standards.

The invention relates to the technical field of photoelectric detection, and discloses a wide-spectrum photoelectric detector based on a crystalline silicon-organic composite heterojunction, which comprises a crystalline silicon avalanche photodiode (APD) layer and an organic semiconductor active layer. Through an energy band matching design, the organic layer covers the surface of the micro-nano structure of the crystalline silicon APD to form a synergistic photoelectric response interface. The structure utilizes the high gain characteristic of the crystalline silicon APD and the broadband spectrum absorption advantage of the organic material to realize the broadband spectrum detection from visible light to near infrared light. In addition, the light capture efficiency is remarkably enhanced through the micro-nano structure design, and the exciton dissociation efficiency is improved through interface electric field regulation and control. The invention solves the problems of narrow spectral range and low sensitivity of the traditional photoelectric detector, and is suitable for medical health monitoring and high-speed optical communication systems.

The present invention provides a cellulose acylate film containing a specific ultraviolet light absorber, a polarizing film using the cellulose acylate film, and a liquid crystal display device, the cellulose acylate film contains more than two ultraviolet light absorbers, at least one of the ultraviolet light absorbers is required to satisfy the following conditions: the absorption capability is mainly concentrated in a 315-400 nm wave band, and the absorption capability of the other one of the ultraviolet light absorbers is not concentrated in a 315-400 nm wave band, and the absorption capability of the other one of the ultraviolet light absorbers is not concentrated in a 315-400 nm wave band. The absorptive amount of the wave band needs to account for 75% or above of the total absorptive amount of the wave band within 250-600 nm, and the wave band has excellent durability such as weather resistance and heat resistance and can block ultraviolet rays with long waves of 380 nm or below. The prepared cellulose acylate film is excellent in spectral absorption performance, little in coloring, excellent in transparency and sufficient in ultraviolet absorption capacity, even if the cellulose acylate film is exposed to high-temperature and high-humidity conditions for a long time, ultraviolet rays can be effectively blocked, and the cellulose acylate film meets the increasing market requirement for use in severe environments.

The invention relates to the technical field of photoelectric materials, in particular to an asymmetric Y-series receptor and fluorene coupled compound and a preparation method and application thereof. The invention provides a fluorenyl-cyclic structure-asymmetric Y6 ternary fusion structure with a clear structure-function relationship. The rigid plane structure of fluorene provides excellent hole transport capability and inherent thermal form stability for molecules. The asymmetric Y6 can effectively regulate and control the energy level structure of molecules and enhance intramolecular charge transfer, and meanwhile, the asymmetric structure of the asymmetric Y6 is beneficial to inhibition of excessive crystallization and optimization of phase separation. The combination of the two can generate a synergistic effect. The fluorene unit can compensate voltage loss caused by introduction of bromine, and realizes wider spectral absorption and higher charge generation and transmission efficiency through combined action. A cyclic structure is introduced into a fluorene core, so that the LUMO energy level of the whole molecular receptor is effectively increased. The compound as an acceptor material is excellent in performance, has a three-dimensional charge transfer characteristic, and is beneficial to improvement of charge mobility.

The invention relates to the technical field of gas sensing, and discloses a cavity enhanced spectral absorption gas detection system and method based on AR-HCF, and the system comprises a light source part, a transmission part, a gas chamber part, a signal detection part and a demodulation part; the air chamber part is a mode interferometer, the mode interferometer is composed of a single-mode fiber (SMF), a gradient refractive index multimode fiber (GIF) and an anti-resonance hollow-core fiber (AR-HCF), the gradient refractive index multimode fiber is welded to the output end of the single-mode fiber, the anti-resonance hollow-core fiber is welded to the output end of the gradient refractive index multimode fiber, and the gradient refractive index multimode fiber and the anti-resonance hollow-core fiber are welded to the output end of the gradient refractive index multimode fiber. According to the AR-HCF-based cavity enhanced spectral absorption gas detection system, the gas sensing unit is of an all-fiber structure, so that the AR-HCF-based cavity enhanced spectral absorption gas detection system is small in size, high in electromagnetic interference resistance, low in cost and convenient to integrate.

According to the graded photo-thermal-gradient needle tip array type saline-alkali soil evaporator and the preparation method thereof, cork wood-derived cellulose is used as a matrix raw material, a graded photo-thermal layer of carbon nano tubes and biochar is constructed, a gradient-size needle tip array is designed, and a porous hydrogel matrix structure is optimized, so that the graded photo-thermal-gradient needle tip array type saline-alkali soil evaporator is obtained. And the evaporator with the functions of efficient photo-thermal conversion, directional water transmission and thorough salt falling is prepared. The full-spectrum absorption efficiency of the prepared evaporator is larger than or equal to 95%, the salt crystallization falling rate is larger than or equal to 98%, the evaporation rate reaches 1.8 kg / mh under one sunlight intensity, the performance degradation is smaller than or equal to 5% after 100-hour continuous operation, the problems that a traditional evaporator is low in photo-thermal efficiency, salt is left and accumulated, and the water transmission resistance is large can be effectively solved, and the evaporator is suitable for saline-alkali soil treatment, fresh water generation and mineral salt collection scenes.

The present invention belongs to the application field of preparation of nano-composite materials and environmental protection, and discloses an embedded face-to-face 2D-In2S3 / 2D-ZnSe composite photocatalytic material, preparation method and application. The method first hydrothermally synthesizes 2D flaky ZnSe, then dissolves the ZnSe nanosheets in a mixed solution of a certain volume of deionized water and ethanol, and finally adopts an in-situ hydrothermal method to obtain the face-to-face 2D-In2S3 / 2D-ZnSe composite photocatalytic material; it can be used for photocatalytic preparation of hydrogen peroxide and photocatalytic degradation of harmful substances in sewage. The preparation method has low raw material cost, simple process and mild reaction conditions. In-situ growth is used to form close contact between 2D-In2S3 and 2D-ZnSe nanosheets, realizing efficient migration and spatial separation of photogenerated carriers, significantly enhancing the electron transmission capacity in the composite material, broadening the spectral absorption range of a single photocatalytic component, thereby improving the photocatalytic activity and stability of the overall material, and having important and broad application prospects in water purification and preparation of high-value-added chemical products.

Systems, methods, and computer program products for multi-model emission determinations are provided. An example imaging system includes an infrared (IR) imaging device configured to generate second IR image data of a first field of view of the IR imaging device at a second time and a computing device operably connected with the IR imaging device. The computing device receives the second IR image data of the first field of view from the IR imaging device and accesses a first detection model associated with the first field of view of the IR imaging device. The first detection model is generated based upon first IR image data of the first field of view of the IR imaging device generated at a first time. The computing device further generates first spectral absorption data based upon the second IR image data and the first detection model for detecting a fugitive emission.

A MEMS-based high-sensitivity super-wide-spectrum uncooled infrared detector and a preparation method thereof, the high-sensitivity super-wide-spectrum uncooled infrared detector comprising: a temperature-sensitive phase change material layer configured to absorb infrared light to realize phase change; a micro-nano heater located below the temperature-sensitive phase change material layer and supporting the temperature-sensitive phase change material layer, configured to provide heat so that the temperature-sensitive phase change material layer is at a phase change critical temperature; and an infrared enhanced absorption layer arranged above the temperature-sensitive phase change material layer and configured to increase the spectral absorption width of infrared light.

The invention provides preparation of Bi (at) C / BiOCl heterojunction dispersion liquid, construction of a photoelectrochemical sensor and a method for detecting chloramphenicol. The preparation method comprises the following steps: mixing a BiOCl dispersion liquid and a Bi (at) C dispersion liquid, and performing ultrasonic dispersion to obtain a Bi (at) C / BiOCl heterojunction dispersion liquid; biOCl and Bi (at) C are compounded to prepare the Bi (at) C / BiOCl heterojunction photoelectric material, so that the spectral absorption range and the photon-generated carrier separation efficiency of a single material can be remarkably improved, and charge recombination is inhibited; the prepared Bi (at) C / BiOCl heterojunction material is used for electrode modification, and a photo-electrochemical sensor based on the Bi (at) C / BiOCl material, which is good in photoelectric property and stable in response signal, is obtained. The photoelectrochemical sensor provided by the invention realizes the detection of chloramphenicol, the adopted instrument is cheap and portable, the preparation method of the sensor is simple and feasible, the signal response is fast, the sensitivity is higher, and the detection limit is as low as 9.6 mu M.

The present invention discloses a carbon-based metastable photoacid composite material, a preparation method thereof, and an application in CO2 capture, belonging to the field of CO2 capture and solar energy utilization. The carbon-based metastable photoacid composite material is composed of a carbon-based material and a metastable photoacid, and the mass ratio of the carbon-based material to the metastable photoacid is 1:(1~30). The composite material utilizes the metastable photoacid to absorb the ultraviolet band in the solar spectrum, and the carbon-based material absorbs the visible-infrared band in the solar spectrum, thereby achieving full-spectrum solar absorption; wherein the ultraviolet band photons are converted into chemical energy by the metastable photoacid, and the visible-infrared band photons are converted into thermal energy by the carbon-based material. The synergistic conversion of solar light chemistry and heat causes the CO2-rich liquid to undergo chemical desorption and thermal desorption simultaneously, thereby achieving quality and efficiency improvement of the desorption of the CO2-rich liquid driven by solar energy. The present invention can realize the full-spectrum utilization of solar energy, solving the problem of inefficient solar energy utilization caused by the single conversion mode and low conversion efficiency of the existing solar carbon capture technology.

The invention discloses a preparation method of a high-efficiency wide-spectrum infrared absorption coating, which comprises the following steps of: performing pretreatment such as grinding, polishing and the like on a thermoelectric ceramic substrate; the preparation method comprises the following steps: uniformly dispersing micro-nano carbon, TiN and Si3N4 nanoparticles, a dispersing agent, a diluent, a binder and the like by adopting a method of combining physical dispersion and chemical dispersion by utilizing the dispersing agent, and blending into spraying slurry; and uniformly spraying the prepared spraying slurry on the surface of a pretreated thermoelectric ceramic substrate by using an electrostatic spraying method, and curing to obtain the wide-spectrum absorbing coating. The absorption coating can be used as an infrared absorption coating and can be used for devices such as an infrared detector, a laser energy meter or a thermal radiation detector.

This invention belongs to the field of solid mineral exploration and evaluation technology, specifically disclosing a rapid field identification method for altered rock-type niobium-tantalum mineralization based on spectral measurements. The method collects spectral data of altered rocks, extracts Fe-OH and Mg-OH spectral absorption characteristic position data after envelope removal, and completes preprocessing through outlier identification and interpolation filling. After adaptive smoothing, weighted fusion, and standardization, multi-model parameter fitting is performed, and the optimal model is selected by combining goodness of fit and information criteria. After smoothing and inflection point analysis of the fitted values, the niobium-tantalum mineralization grade range is determined. This invention achieves in-situ, non-destructive, rapid, and intelligent field identification, determining the degree of mineralization without laboratory testing, significantly improving prospecting efficiency, reducing exploration costs and risks, filling the gap in rapid spectral identification technology for altered rock-type niobium-tantalum mineralization, and providing efficient technical support for the exploration of strategic rare metal resources.

The application relates to a polycarbonate composite material and a preparation method thereof, and belongs to the technical field of high polymer materials; the composite material is composed of the following components in parts by weight: polycarbonate 70-80 parts, ABS resin 20-30 parts, a compatilizer 3.2-4.5 parts, a lubricant 0.6-0.8 parts, a modified light stabilizer 0.42-0.55 parts and an antioxidant 0.13-0.18 parts; the modified light stabilizer has a specific organic silicon-ester group alternating chain structure, a hindered amine group is introduced on the chain, is different from a conventional hindered amine light stabilizer, does not passively protect through spectral absorption or free radical capture, but actively and accurately acts on a micro-weak phase interface of the PC / ABS composite material, effectively relieves light aging of the phase interface, simultaneously forms a mechanical gradient transition zone at the phase interface, and effectively improves the overall performance of the composite system.

The invention relates to a rocket boosting section tail flame infrared radiation characteristic time sequence dynamic simulation method, and belongs to the technical field of infrared radiation characteristic simulation. The method for dynamically simulating the time series of the infrared radiation characteristics of the tail flame of the rocket boosting section comprises the following steps: firstly, acquiring dynamic input source data, then dynamically simulating a flow field of the tail flame boosting section of the rocket, and then calculating infrared radiation characteristic parameters and solving a radiation transfer equation. And finally, correcting the time sequence of the infrared radiation intensity of the tail flame based on an atmospheric radiation transmission model, and finally completing the dynamic simulation of the time sequence of the infrared radiation intensity of the boosting section of the tail flame of the rocket. According to the method, the coupling influence of multiple physical fields such as a flow field, chemical components, spectral absorption and atmospheric attenuation can be considered synchronously, and the accuracy of infrared characteristic simulation of the rocket tail flame is remarkably improved. The method adapts to flight working conditions and environmental condition changes at different moments, and keeps calculation effectiveness and stability, thereby effectively breaking through the limitation of a traditional tail flame infrared radiation characteristic simulation method in the aspect of dynamic nature.

This invention relates to the technical field of photovoltaic cells, and more particularly to a biomimetic perovskite-silicon nanoparticle photovoltaic cell and its preparation method. The cell comprises, from bottom to top, a transparent conductive substrate, an electron transport layer, a nano-silicon antireflective layer, a perovskite / nano-silicon composite light absorption layer, a transition layer, a nano-silicon modified transport layer, a hole transport layer, and a metal electrode, stacked sequentially. By constructing a four-layer biomimetic structure, the nano-silicon antireflective layer reduces reflection and blocks ultraviolet light; the composite absorption layer achieves full-coverage absorption of 400-1200 nm through the complementary spectrum of nano-silicon and perovskite; the transition layer optimizes energy level matching; and the modified transport layer enhances charge transport. This invention solves the technical problems of narrow spectral absorption, poor stability, and high carrier recombination rate in existing cells, significantly improving photoelectric conversion efficiency and adaptability to extreme environments, making it suitable for both terrestrial and space photovoltaic applications.

The invention discloses preparation and performance research of a dye-sensitized solar cell photo-anode based on {PW12O40} (at) Cu-Melamine / GO polyacid salt, and relates to preparation and performance research of a solar cell photo-anode. The invention aims to solve the problems of low energy utilization in a visible light region and low cell efficiency caused by compounding of interface photon-generated carriers when a dye-sensitized cell photo-anode is prepared under the conditions of the prior art, and provides a preparation method of a photo-anode capable of improving the performance of a device. The preparation method disclosed by the invention comprises the following steps: 1, preparing polyacid-loaded titanium dioxide nanoparticles by adopting a gel-sol method; 2, preparing a polyacid salt {PW12O40} (at) Cu-Melamine / Go powder body; and 3, preparing a photo-anode (uniformly mixing the modified powder with ethyl cellulose, turpentine alcohol and ethanol, carrying out silk-screen printing to form a film, and then carrying out high-temperature calcination). According to the invention, the photo-anode material capable of broadening spectrum absorption and inhibiting carrier recombination can be obtained.

An on-line multi-component gas analysis system based on a spectral absorption technology includes a housing, wherein the housing includes an air inlet hole and an air outlet hole which are respectively connected with an air inlet pipe and an air outlet pipe, and the housing includes a dust removal and dehumidification device, a micro vacuum pump, an electronic flowmeter, and a plurality of different gas sensors; the dust removal and dehumidification device, which is configured to perform dust removal and dehumidification treatment on a gas entering from the air inlet hole; the micro vacuum pump, one end of which being connected with the dust removal and dehumidification device through a pipeline, and the other end of which being connected with the electronic flowmeter; and the plurality of different gas sensors. The disclosure includes an analysis method based on the on-line multi-component gas analysis system based on a spectral absorption technology.