24 results about "Ft ir spectroscopy" patented technology

The invention relates to an organic matter near infrared spectrum inversion method and device for removing moisture based on radiation. The method comprises the steps that after a soil sample is pretreated, multiple moisture content gradients are regulated and controlled, the natural moisture permeation state is simulated, visible light-near infrared spectrum data and the organic matter content are collected, and a soil spectrum library is constructed; quantifying the interference weight of moisture on the spectrum by using a physical radiation transmission model to obtain a preliminary correction spectrum; moisture and organic matter features are extracted through a deep learning multi-branch architecture, a moisture characterization index is constructed, cross-domain feature alignment is realized in combination with a domain adversarial network, and an accurate correction spectrum is obtained; all the modules are integrated to construct a soil moisture elimination reconstruction spectrum model, after layered verification and iterative optimization, a to-be-detected soil spectrum is input into the model, organic matter content near infrared spectrum inversion is completed, and a result is output. According to the method, moisture interference is removed through combination of physical radiation and deep learning, the inversion precision is improved, and the method is suitable for rapid detection of organic matters in various moisture-containing soil.

The invention relates to the technical field of near-infrared light analysis materials, in particular to a near-infrared spectrum noninvasive blood glucose concentration dynamic detection method which comprises the steps that a plurality of training samples and blood near-infrared spectrum current data of the current blood glucose concentration to be detected are collected, and the training samples are blood near-infrared spectrum historical data of different blood glucose concentrations; determining a water molecule absorption peak value in the blood near infrared spectrum historical data and the blood near infrared spectrum current data, a corresponding wavelength thereof, and a difference between the water molecule absorption peak width, and obtaining the availability degree of each training sample; the mathematical regression model weight of each training sample is obtained based on the availability degree of each training sample and the collection time of each training sample, so that the mathematical regression model weight of each training sample is more reliable and accurate, the accuracy of the mathematical regression model is improved, and finally the accuracy of blood glucose concentration detection is improved.

The invention provides a frequency domain near infrared spectrum detection device and method based on photon counting, which can be applied to the technical field of in-vivo non-invasive medical detection and diagnosis. The device comprises a photoelectric module configured to emit incident light to a to-be-measured object and generate an electric signal in response to emergent light received from the to-be-measured object, and the incident light is obtained by coupling a plurality of laser signals with different modulation frequencies; each counting module comprises multiple parallel counting channels, and first clock signals of the multiple counting channels have a first frequency and have phase differences relative to each other; the processing module is used for sampling the electric signals so as to determine a target counting channel according to the electric pulse which is responded first in the electric signals; each counting module is configured to determine a response moment of the first responded electrical pulse based on a synchronization signal synchronized with the phase of the modulation signal, and perform photon counting within a time scale corresponding to the response moment to generate a counting result.

The present invention relates to a process for binding carbon dioxide to a waste building material 10, wherein the reaction is carried out in a carbonation reactor 20, wherein a waste building material 10 is fed to the carbonation reactor 20, wherein a carbon dioxide-containing gas 30 is fed to the carbonation reactor 20, and wherein a carbonation product 50 is discharged from the carbonation reactor 20, characterized in that the alkaline earth content of the waste building material 10 fed to the carbonation reactor 20 and / or of the carbonation product 50 discharged from the carbonation reactor 20 is determined by means of elemental analysis 60, wherein the degree of carbonation C of the carbonation product 50 is determined by IR spectroscopy, and wherein a carbonation degree limit value Cmax is set.wherein if the carbonation degree limit Cmax is undershot, the supply of the waste material 10 to the carbonation reactor 20 is reduced and / or the supply of the carbon dioxide-containing gas 30 to the carbonation reactor 20 is increased, wherein if the carbonation degree limit Cmax is exceeded, the supply of the waste material 10 to the carbonation reactor 20 is increased and / or the supply of the carbon dioxide-containing gas 30 to the carbonation reactor 20 is reduced.

This invention relates to the field of near-infrared spectroscopy detection technology, and discloses a near-infrared spectroscopy detection device and method for rapeseed. The sample-carrying component includes a sample tray and a stirring element. The relative rotation of the sample tray and the stirring element allows the sample in the sample tray to be turned over, achieving the interchange of upper and lower layers and uniform mixing of inner and outer rings. This ensures reliable test results and stable experimental repeatability, reflecting the true data of particulate matter to a greater extent. The central axis of the receiving module forms a certain angle with the optical axis of the light source module, effectively avoiding interference from specular reflection and achieving better overlap between the irradiation spot and the receiving spot. Furthermore, this invention employs a three-level anomaly detection mechanism—spectral integrity, correlation, and dispersion—to eliminate abnormal spectra from multiple acquired spectral data. This effectively eliminates outlier data caused by sample state fluctuations, sample loading differences, or accidental interference, improving the consistency and reliability of the spectral data.

The invention discloses a black fungus quality analysis method based on infrared spectroscopy, and belongs to the field of black fungus quality analys.The method comprises the steps that infrared spectroscopy collection and data analysis are conducted on black fungus samples of different producing areas and different batches, and the corresponding relation between spectral characteristics and main components of black fungus is established; therefore, rapid, lossless and multi-dimensional detection and evaluation of components such as auricularia auricula polysaccharides, proteins, lipids, calcium oxalate crystals and the like are realized. Compared with a traditional method depending on sensory indexes, physicochemical indexes and single chemical analysis, the method has the advantages that the detection time is short, complex sample pretreatment is not needed, and more comprehensive and objective quality information can be provided.

The invention discloses a gas analyzer based on infrared spectrum and an indication error calibration method. The method comprises the following steps: respectively mounting a spectrum transmitting end and a spectrum receiving end on two sides of a calibration tube; standard gas with the same concentration and different injection operation parameters is injected into each calibration pipe, infrared light is emitted into the calibration pipes at the same time, the light intensity of the infrared light passing through the gas in the calibration pipes and received by a spectrum receiving end is analyzed, and the measurement and calculation value of the concentration of the standard gas is obtained in combination with the absorption law; constructing a calibration model between the concentration measurement and calculation value and the injection operation parameters; injecting to-be-detected gas into each calibration pipe according to the same injection operation parameters, and correcting the measured concentration of the to-be-detected gas based on the injection operation parameters and the calibration model; based on the influence coefficient of the injection operation parameters on gas concentration measurement, the measurement concentration of the to-be-measured gas with unknown concentration is corrected, and the measurement accuracy of the gas concentration is improved.

A method of sorting plastics substrates uses infrared spectroscopy, wherein at least one substrate has a black inkjet ink layer comprising a radiation-curable monomer, <2 wt.% carbon black, and two or

The invention discloses a method for rapidly detecting the rolling oil acid value in emulsified liquid for cold rolling production, which comprises the following steps: S1, taking the cold rolling emulsified liquid to be detected, filtering, and then sequentially carrying out organic solvent mixing and extraction, high-speed centrifugal separation and negative pressure rotary evaporation operation on the cold rolling emulsified liquid to be detected, so as to obtain a rolling oil sample to be detected; s2, preparing rolling oil standard samples with different acid values; and S3, respectively detecting the rolling oil standard samples with different acid values and the rolling oil sample to be detected by utilizing an infrared spectroscopy method to obtain infrared spectrums of the corresponding samples so as to obtain a standard curve of the acid value of the rolling oil, and comparing to obtain the acid value of the rolling oil in the cold rolling emulsion to be detected. According to the method, the acid value of the rolling oil in the on-site emulsion can be quickly read and obtained, the result accuracy is high, the requirements for quick measurement and quick adjustment of on-site production of a modern cold rolling unit can be met, and high practicability is achieved.

The application provides a rapid detection method and system for herbicide effective components based on near-infrared spectroscopy, which is applied to the field of agricultural detection technology, and the near-infrared spectroscopy data of a soil region to be detected, the water content and the compactness values reflecting the soil texture differences are obtained, based on the preset interval to which the water content value belongs, the corresponding preset scattering correction parameter is selected, the actual scattering correction parameter is calculated through the compactness value, the fine adjustment of the scattering correction parameter is realized, the quality and reliability of the spectral data are improved through spectral correction; the corrected spectrum is analyzed, and the real situation of the herbicide in the soil can be more accurately reflected. Therefore, the application effectively overcomes the interference of the complex soil texture in the field on the near-infrared spectroscopy herbicide detection, and realizes the beneficial effect of rapid and accurate detection of the herbicide effective components under the complex soil condition.

This disclosure provides a vessel and methods for handling high-purity phosphorus fluoride compounds. The vessel can include a phosphorus fluoride component including a phosphorus fluoride compound with a purity of at least 99.9%, as measured by gas chromatography and / or infrared spectroscopy. Also disclosed is a method which includes obtaining a solid component containing a metal fluorophosphate compound and water, heating the solid component to remove water, and further heating to form a phosphorus fluoride compound with a purity of at least 99.9%, as measured by gas chromatography and / or infrared spectroscopy.

This disclosure provides transabdominal fetal oximetry (TFO) that uses frequency-modulated continuous-wave (FMCW) time-domain near-infrared spectroscopy to measure time-resolved reflectance values of light signals collected from a maternal-fetal multilayer tissue structure. In various embodiments, the disclosed FMCW time-domain near-infrared spectroscopy is configured to function as an optical interferometer that uses two frequency-swept laser sources of different center wavelengths λ1 and λ2 as probe lights to detect optical property in vascular tissues of the maternal-fetal multilayer tissue structure. The FMCW near-infrared spectroscopy is configured to collect light signals returned from the multilayer structure and generate a time-resolved reflectance curve based on the collected light signals.

This application provides a gas detection system and method based on near-infrared wavelength modulation and mid-infrared pulsed laser synergy, relating to the fields of spectroscopic gas detection and industrial flue gas monitoring. In industrial sites such as biomass power plants, hazardous waste incineration plants, and aluminum smelters, the flue gas generated in their flues has complex compositions. Traditional chemical detection methods are insufficient to meet real-time requirements, while other optical detection methods, such as Fourier transform infrared spectroscopy and ultraviolet differential spectroscopy, suffer from high costs and difficulty in avoiding water vapor interference. To address this, a system and method for detecting the concentration of gaseous pollutants in industrial flue gas based on near-infrared wavelength modulation and mid-infrared pulsed laser synergy is proposed. This system combines near-infrared wavelength modulation spectroscopy with mid-infrared pulsed direct absorption spectroscopy, employing multiple near-infrared tunable continuous lasers and mid-infrared tunable pulsed lasers. It utilizes time-division multiplexing and polling modes, combined with a common optical path design, to achieve real-time online monitoring of the concentration of various gaseous pollutants, ultimately significantly reducing the overall system cost.

This invention relates to a rapid detection system and method for microplastics in soil. The system includes a soil laser ablation system and an infrared spectroscopy detection system. The soil laser ablation system includes a laser, a focusing lens, a sample ablation chamber, and a two-dimensional displacement platform. The infrared spectroscopy detection system includes an infrared light source, a gas cell, and an infrared detector. Before the soil laser ablation system ablates the soil sample, a pressure difference is created between the gas cell and the sample ablation chamber to transfer volatiles generated during the ablation of the soil sample into the gas cell. The infrared detector acquires the infrared characteristic spectral data of the volatiles, and the spectral characteristics and intensity information of the characteristic bands of the volatiles are selected. Qualitative and quantitative analyses of the types and contents of microplastics in the soil are then performed based on microplastic classification and quantification models, respectively. This invention enables rapid, on-site detection of microplastics in soil.

This invention discloses a chemical reaction pattern recognition method based on the combined use of infrared spectroscopy and reaction calorimetry. This invention establishes kinetic models for different reaction types based on reaction kinetics principles, improving pattern recognition accuracy and model interpretability while generating massive amounts of infrared spectral and reaction calorimetric data. This avoids experimental costs and time expenditure, providing effective data support for the study of reaction kinetics principles. This invention sets up independent encoders to extract key features for each modality, and further employs a Transformer architecture to achieve cross-modal collaborative perception. Based on deep feature fusion, modal task weight vectors and modal input confidence vectors are generated simultaneously. From the perspectives of the global task and the current sample, the contribution of each modality and the real-time reliability of the input data are evaluated, achieving accurate identification and classification of chemical reaction patterns.

The invention discloses a transverse magnetic field configuration optical system for a high-intensity magnetic field Fourier infrared spectrum device. The transverse magnetic field configuration optical system comprises a solenoid superconducting magnet tubular sample cavity for the high-intensity magnetic field Fourier infrared spectrum device and a non-magnetic damping sleeve arranged in the solenoid superconducting magnet tubular sample cavity. A non-magnetic mirror surface gold-plated optical waveguide is arranged on the upper portion in the non-magnetic damping sleeve, a transverse magnetic field configuration optical module is arranged on the lower portion in the non-magnetic damping sleeve, an adjustable sample bearing table is arranged in the transverse magnetic field configuration optical module, and the adjustable sample bearing table is connected with a speed reduction stepping motor outside the transverse magnetic field configuration optical system. The non-magnetic mirror surface gold-plated optical waveguide comprises a light-in waveguide for inputting probe light and a light-out waveguide for outputting signal light. The transverse magnetic field configuration optical module comprises a transverse magnetic field configuration reflection module and a transverse magnetic field configuration transmission module which are respectively adapted to different strong magnetic field Fourier infrared spectrum measurement requirements. The invention provides an optical system capable of realizing transverse magnetic field configuration magnetic spectrum measurement.

The present application relates to the technical field of petroleum engineering logging equipment, and particularly relates to a dual-mode hydrocarbon source gas detection device and method based on non-dispersive infrared spectroscopy, which comprises a gas permeation unit for separating hydrocarbon gases, a non-dispersive infrared light source for generating double-light-path independent transmission spectrum output gas spectrum data, an arbitration module for generating an arbitration decision result with a light path mode marker, an analysis module for analyzing pulse signals and identifying spectrum patterns, and an output module for fusing concentration values, light path mode markers and classification codes to generate three-tuple data of deep concentration patterns. The present application dynamically releases characteristics through real-time arbitration matching of double-light-paths, captures transient pulse signals through short light paths, converts formation parameters by identifying peak width symmetry characteristics through the analysis module, and forms an unalterable record chain by correlating time and depth dimensions through the output module, so as to eliminate the misjudgment of formation signals caused by the mismatch between artificial detection cycles and gas release dynamic characteristics.

This invention provides an infrared spectroscopy detection device for operating devices, comprising a graphite flow field, a membrane electrode, an infrared window slot, and an infrared window flow field; the graphite flow field, membrane electrode, and infrared window slot are stacked together in sequence, and the infrared window flow field is engaged in the infrared window flow field slot; the infrared window flow field is made of an infrared transmitting material; and flow channels are provided on the infrared window flow field. This device can realize infrared spectroscopy detection of fuel cells or electrolyzers under operating conditions.

The invention relates to the field of gas detection, in particular to a mixed gas detection method and device based on an ultraviolet-infrared spectrum. The method comprises the following steps: respectively acquiring an ultraviolet spectrum and an infrared spectrum of target light; acquiring an ultraviolet signal-to-noise ratio of the ultraviolet spectrum and an infrared signal-to-noise ratio of the infrared spectrum; calculating an ultraviolet weight corresponding to the ultraviolet spectrum and an infrared weight corresponding to the infrared spectrum based on the ultraviolet signal-to-noise ratio and the infrared signal-to-noise ratio; fusing the ultraviolet spectrum and the infrared spectrum based on the ultraviolet weight and the infrared weight to obtain a fused spectrum; and obtaining the target gas concentration of each component gas in the mixed gas based on the fusion spectrum. According to the mixed gas detection method and device based on the ultraviolet-infrared spectrum provided by the invention, the technical effect of high-precision concentration detection of each component gas in the SF6 mixed gas can be realized.

This disclosure provides a vessel and methods for handling high-purity phosphorus fluoride compounds. The vessel can include a phosphorus fluoride component including a phosphorus fluoride compound with a purity of at least 99.9%, as measured by gas chromatography and / or infrared spectroscopy. Also disclosed is a method which includes obtaining a solid component containing a metal fluorophosphate compound and water, heating the solid component to remove water, and further heating to form a phosphorus fluoride compound with a purity of at least 99.9%, as measured by gas chromatography and / or infrared spectroscopy.

The invention relates to the technical field of traditional Chinese medicine identification and analysis, in particular to an infrared spectroscopy method, system and program for rapidly and nondestructively identifying semen cuscutae and processed products thereof. According to the method, a Fourier infrared spectrum technology is combined with an integrating sphere diffuse reflection sampling mode, infrared spectrum data of a sample are collected within the wave band of 4000 cm <-1 >-500 cm <-1 >, and the infrared spectrum data of the sample are obtained through preprocessing means such as automatic baseline calibration, smoothing processing, first-order derivative and vector normalization in combination with clustering analysis and principal component analysis. And rapid qualitative identification of different processed products such as crude products, stir-fried products, stir-fried products with wine and stir-fried products with salt is realized. The method has the advantages of simplicity and convenience in operation, no need of chemical reagents, rapidness in detection, high integrity, no loss and the like, and is suitable for quality control and clinical application guidance of traditional Chinese medicine processed products.

The application provides a cigarette leaf group formula aided design method based on virtual mixed near-infrared spectroscopy. The method greatly shortens the time for substituting leaf formula of a target flavor cigarette product based on virtual leaf group mixing technology of near-infrared spectroscopy, multivariate correction model and spectral standardization model, reduces the evaluation and smoking workload of a formulator, realizes the intelligentization of a leaf formula technology, and effectively maintains the stability of tobacco product quality.

The invention discloses flow field control coupled surface enhanced infrared spectroscopy electrochemical equipment, which is characterized in that an electrochemical cell assembly comprises a working electrode side end plate, a working electrode, a reference electrode, a first multi-channel thin-layer flow channel, an ion exchange diaphragm, a second multi-channel thin-layer flow channel, a counter electrode, a sealing gasket and a counter electrode side end plate which are arranged in sequence; an infrared detection window is arranged on the working electrode end plate; the working electrode is attached to the infrared detection window; the working electrode side end plate is provided with a working electrode side fluid inlet, and the working electrode side fluid inlet is connected with a peristaltic pump; a counter electrode side fluid inlet is formed in the counter electrode side end plate; the infrared spectrum detection assembly comprises an incident light path structure and a detection light path structure which are used for emitting infrared detection light to the infrared detection window and receiving infrared detection light. According to the equipment, various different reaction scenes in a real electrochemical cell can be simulated in a richer manner, and support is provided for effectively researching factors influencing the reaction of the electrochemical cell.

The invention belongs to the technical field of semiconductor silicon single crystal oxygen content detection, and particularly relates to a method for detecting heavily-doped silicon single crystal oxygen content by using lightly-doped silicon single crystal, which comprises the following steps: selecting a lightly-doped silicon single crystal sample, and pretreating the lightly-doped silicon single crystal sample to obtain a lightly-doped silicon single crystal standard sample; the method comprises the following steps: acquiring a heavily doped oxygen content standard value Oi of a heavily doped silicon single crystal sample to be detected and a lightly doped oxygen content standard value Oi1 of a lightly doped silicon single crystal sample at each gear, and detecting the lightly doped silicon single crystal sample at each gear for multiple times by adopting an infrared spectroscopy to obtain a calibration curve: Oi1 = A * alpha1 + B; detecting the heavily doped silicon single crystal sample to be detected by adopting an infrared spectroscopy method to obtain a second absorption coefficient alpha2, and calculating an error value Oi2 of the oxygen content of the heavily doped silicon according to Oi2 = A * alpha2 + B; calculating a correction factor K according to the heavily doped oxygen content standard value and the heavily doped silicon oxygen content error value Oi2; and correcting the oxygen content error value Oi2 of the heavily doped silicon by using the correction factor K to obtain a calibration value of the heavily doped silicon single crystal sample.