124 results about "Infrared spectroscopy technique" patented technology

The invention provides a method for identifying traditional Chinese medicinal materials by combining infra-red spectra with cluster analysis, which includes the following steps of: (1) selecting a same traditional Chinese medicinal material as a standard sample; (2) detecting the standard sample by infra-red spectra to obtain an infra-red spectrogram; (3) establishing a standard infra-red model of the traditional Chinese medicinal material by a cluster analysis method with the obtained infra-red spectrogram; and (4) comparing the standard infra-red model with the infra-red spectrogram of the sample of traditional Chinese medicinal material to be identified and directly analyzing and identifying the traditional Chinese medicinal material. The method is simple, convenient, and rapid, and can keep the integrity of the traditional Chinese medicinal material and directly determine the quality of the traditional Chinese medicinal material and identify whether the traditional Chinese medicinal material is authentic or not.

The invention provides a method for identifying production place of tea by using infrared spectrum technology, which comprises the following steps: production place typical lines of tea in place of origin are constructed; B. detecting sample: tea samples to be detected are taken and detected under the same condition with the standard sample respectively to obtain standard mid-infrared spectrums, average deviations between the tea samples and reference tea in production place are calculated according to the spectrums, and difference values between the average deviations and the production place typical lines are calculated, if the difference value is within standard deviation range, the tea sample belongs to the production place, otherwise, the tea sample does not belong to the production place. The method has the following advantages: 1. the analyzing result is not affected by subjective consciousness, thereby providing an impersonal evaluation criterion; 2. according to similarity theory, the average deviation can represent the difference between infrared spectrums of tea more accurately; 3. component separation, extraction and the like on tea are not needed before detecting infrared spectrum of the tea, which simplifies the operation, greatly improves the analyzing speed and reduces the detecting cost without environment pollution.

The invention relates to an estimation method for the content of copper in soil on the basis of visible-light near-infrared spectrum technology. The estimation method is realized by the following six steps: (1) collecting a soil sample; (2) determining a visible-light near-infrared spectrum; (3) pretreating the spectrum; (4) determining the reference value of the content of copper in soil; (5) establishing an estimation model; and (6) estimating the content of copper in an unknown soil sample. The estimation model between the visible-light neared-infrared reflectivity spectrum and the content of the copper is established by utilizing a wavelet neural network method on the basis of the visible-light near-infrared spectrum technology, so that the visible-light neared-infrared reflectivity spectrum of the unknown soil sample is substituted into the estimation model and further the content of the copper in the unknown soil sample is determined. The estimation method has the advantages that the determination can be performed without direct contact with the sample, and is complete non-destructive measurement, the operation process and the calculation method for the content of the copper in the soil are simple, the determination speed is greatly enhanced, no other chemical reagents need to be added and the like, so that the estimation method is environmental-friendly and pollution-free.

The invention discloses a road icing detection and pre-warning system based on an infrared spectrum technology and a method thereof. The system comprises an upper computer system, a digitized control module, a light transmission module, a light receiving module and an information publishing module. The light transmission module transmits infrared optical pulses with different wave lengths under the control of the upper computer system and the digitized control module; the light receiving module can detect reflected light of the optical pulses on the interface of an object to be detected, is in butt joint with the digitized control module through an optical transmitter and receiver or a wireless communication method, and transmits the reflected light to the upper computer system through data conversion; then current road surface condition is evaluated, the road surface condition is displayed timely through the information publishing module, and when a road surface has an icing trend, the system sends an icing alarm. According to the road icing detection and pre-warning system based on the infrared spectrum technology and the method thereof, different road surface condition including dryness, water, ice and snow cover can be effectively detected, dynamic pre-warning of the road surface condition is achieved more flexibly and precisely, and traffic accidents caused by belated road surface condition judgment or published information not in place on severe weather conditions are reduced.

The invention relates to a method for performing lossless identification on brands of steel structure fireproof paints by applying near infrared spectroscopy. The method comprises the following steps: adopting different brands of steel structure fireproof paint samples, collecting near infrared spectrums for several times at different positions on the surfaces of the coated steel structure fireproof paints by utilizing near infrared spectrum equipment, after spectrum pretreatment, establishing different brands of mahalanobis distance discriminant analysis models, calculating the mahalanobis distance average value and the mahalanobis distance critical value of each brand through comparing the validation set of different brands with the mahalanobis distance discriminant analysis models, collecting the near infrared spectrums of unknown samples to be contrasted with the established model of each brand, comparing the calculated minimum mahalanobis distance value of the unknown samples with the mahalanobis distance critical values of the brands, and judging the brands of the unknown samples. The method has the technical effects that the result is accurate, the operation is simple and convenient, the analysis is quick and the analysis cost is low, no pollution is caused to the environment, and the method is suitable for quick on-site lossless detection and identification for the quality and brands of the steel structure fireproof paints.

The invention provides an infrared spectrum detection method of ginseng and astragalus injection liquid, which comprises the following steps: a. processing injection liquid samples; b. drawing maps; c. carrying out standard control; d. comparing the maps; and e. obtaining the conclusion: observing whether the ginseng and astragalus injection liquid to be detected conforms to the specification of the standard or not through the comparison and whether the maps conform to the standard maps obtained from the standard ginseng and astragalus injection liquid samples or not, and further obtaining the conclusion. The ginseng and astragalus injection liquid with the feature peak near 779, 818, 867 and 1056 and the similarity between 0.98 and 1.00 is selected as qualified products. The invention uses the macroscopical fingerprint performance of the infrared spectrum, the variation features of the infrared spectrogram is directly used on the quality control, or can be directly used on the quality control after digital processing, and the infrared spectrum technology is sufficiently utilized for fast monitoring the quality of the ginseng and astragalus injection liquid, including the stability, the ingredient variation, the adulteration, the impurities, unpredictable quality problems and the like of the ginseng and astragalus injection liquid.

The invention discloses a mars material composition analyzing system and method adopting an active/passive combined spectrum technology. The system comprises an optical head, a short wave spectrometer, a medium wave spectrometer, a long wave spectrometer, an infrared AOTF spectrometer, a calibration plate, a two dimensional pointing mirror, a pointing mirror control cable, and a load controller. The system can cooperate with an active laser spectrum and a passive infrared spectrum technology to detect atoms, symmetrical molecules, and asymmetric molecules of mars. The active LIBS spectrum detection can quantitatively and qualitatively analyze atoms of a substance. The active time domain laser Raman detection can quantitatively and qualitatively analyze symmetric molecules of a substance. The passive infrared spectrum detection can quantitatively and qualitatively analyze asymmetric molecules of a substance. The active spectrum and passive spectrum are combined to synchronously detect atoms, symmetric molecules, and asymmetric molecules of substances so as to classify and recognize rocks, soil, and minerals in mars. The provided system and method enlarge the analysis range of substances in mars, and the system is compact and convenient.

The invention discloses a yam prescription granule, a preparation method and a quality control method thereof. The yam prescription granule takes yam herbal pieces prepared for decoction as the raw material and is prepared by the processes of twice extraction by water, reduced pressure concentration, spray drying, and the like; each gram of the yam prescription granule corresponds to 5-10g of crude drug dosage; the quality of both yam herbal pieces prepared for decoction and yam prescription granule is identified by infrared fingerprint spectra. The yam prescription granule of the invention has integral and advanced preparation process and specific and controllable quality control standard, wherein, the advanced process can be realized and the detection method related to the quality standard is scientific, advanced and fast and convenient with strong feasibility. Experiments show that the decoction composed by the yam prescription granule of the invention contains the same ingredients as the herbal pieces mixedly decocted liquor containing yam of the classical prescription, the prescription granule process of bulk composition is realized and the process of the invention is reasonable; furthermore, the invention applies the technology of infrared fingerprint spectra to the quality control of the traditional Chinese medicine, thus the primary problem in the macro quality control of the traditional Chinese medicine, namely the authenticity identification of the traditional Chinese medicine is instantly solved.

The invention relates to near infrared spectrum techniques, in particular to near infrared spectrum-based mathematical model and detection method for heat-treated wood color. A building method of the mathematical model includes the steps of 1, processing wood to obtain a plurality of wood blocks 15mm to 25mm in fiber direction, 18mm to 25mm in radial direction and 18mm to 25mm in tangential direction; 2, heat-treating the processed wood blocks; 3, measuring colorimetric parameters of the wood blocks; 4, acquiring near infrared spectral information of tangential sections of the wood blocks subjected to the measurement of the colorimetric parameters; 5, establishing the mathematical model of colorimetric parameters. The mathematical model is suitable for online detection of the color of the heat-treated wood.

An infrared spectrum optical device of surface intensification type is prepared as plating metal nanofilm electrode on top surface of wafer and setting water membrane layer between bottom-side surface of water and semi-cylindrical zinc selenide as well as using paraffin wax to seal peripheral seam of water membrane layer to from operation electrode, arranging electrolyzer on metal nanofilm and sealing intermediate by silicon rubber ring, using wire copper membrane to lead out metal nanofilm and setting pair electrode and reference electrode in electrolyzer to from electrode system of electrochemical spectrum test.

A method uses acousto-optic adjustable filter near infrared (AOTF-NIR) spectrum technique in quick qualitative analysis of proprietary Chinese medicine. Near infrared spectrum containing rich information of medicine is achieved by AOTF-NIR spectrum technique and computer etc. Collects NIR spectrum of correcting set samples by AOTF near infrared spectrometer and builds qualitative analysis model by principle component analysis (PCA) to analyze. Base on the invention, quick qualitative analysis for other proprietary Chinese medicine and on-line monitoring method in key segments of proprietary Chinese medicine production are realized, which advances research technique development of proprietary Chinese medicine.

The invention discloses a fried gardenia prescription granule, a preparation method and a quality control method thereof. The fried gardenia prescription granule takes fried gardenia decoction pieces as the raw material and the fried gardenia prescription granule is prepared through the process flows, such as twice water extraction, vaccum concentration, sponging drying, and the like; 1g of the fried gardenia prescription granule is equal to 5-10g of crude drug; the content of gardenoside in the fried gardenia prescription granule is not lower than 5%; the quality of both fried gardenia decoction pieces and fried gardenia prescription granule are identified by infrared fingerprint spectra. The fried gardenia prescription granule of the invention has complete and advanced production process, specific and controllable quality control standard scientific, advanced and fast detecting method related to the quality standard and strong operability. A great number of experiments prove that the prepared soup of the fried gardenia prescription granule of the invention and the mixed simmered liquid of the classical prescription decoction pieces containing the fried gardenia have equal components, thus realizing the technique of full ingredient prescription granule and proving the rationality of the technique of the invention; furthermore, the invention applies the infrared spectroscopy technology to the quality control of the traditional Chinese medicines, rapidly solving the primary problem in the macro quality control of the traditional Chinese medicines---the identification of the truth of traditional Chinese medicines.

The invention relates to a near-infrared spectrum technology. For the problem that the existing near-infrared spectrum detector is more closed, the invention provides a wireless intelligent spectrum detection system based on a mobile terminal. The technical scheme can be summarized as follows: the wireless intelligent spectrum detection system based on the mobile terminal comprises the mobile terminal, a spectrometer with a wireless communication module and a cloud platform; the spectrometer is connected with the mobile terminal by the wireless communication module; the mobile terminal is connected with the cloud platform. The wireless intelligent spectrum detection system provided by the invention has the beneficial effects that by a mode of combining the spectrometer and the mobile terminal, the spectrometer is not in a sealed state, the data can be uploaded to the mobile terminal, processed and displayed by the cloud platform or the mobile terminal, and the data storage is finished,so that a user is convenient to view and the wireless intelligent spectrum detection system is applicable to the spectrometer.

The invention discloses a honey-fried licorice root formula particle and preparation and quality control methods thereof. The formula particle uses honey-fried licorice root decoction pieces as raw materials, and the decoction pieces are processed by the technological processes of twice water extraction, vaccum concentration, sponging drying and the like to gain the honey-fried licorice root formula particle; and one gram of honey-fried licorice root formula particle is equivalent to 3 to 5 grams of crude medicines, the content of glycyrrhizic acid in the formula particle is not lower than 2.0 percent, and the quality of the honey-fried licorice root decoction pieces and the honey-fried licorice root formula particle is respectively discriminated by the infrared fingerprint spectra. The honey-fried licorice root formula particle of the invention has the advantages of integrated and advanced production process, specific and controllable quality control standard and advanced and realizable process, and a test method related to the quality standard is scientific, advanced, fast and highly operable. Proved by a lot of experiments, the ingredient of a herbal decoction prepared by the honey-fried licorice root formula particle of the invention is equivalent to the ingredient of the mixed simmer liquid of the honey-fried licorice root contained classical formula, the full ingredient formula particle process is achieved, and the process of the invention is proved to be reasonable; and the invention applies the infrared spectroscopy technology to the quality control of the traditional Chinese medicines, thereby fast solving the principal problem of traditional Chinese medicine truth discrimination in the macroscopic quality control of the traditional Chinese medicines.

The invention relates to the field of flavoring agents, and particularly relates to a method for detecting delicious taste and/or delicious taste intensity in a flavoring agent. An infrared spectroscopy technology is adopted to measure an effective alpha-NH+3 group (corresponding infrared spectrum specific wavelengths are 1520-1570/cm and 1380-1430/cm) and a gamma-COO-group (corresponding infraredspectrum specific wavelength is 1610-1660/cm) of a five-membered ring structure formed by amino acids in a sample, as well as phosphate on the 5'-position of ribose on a nucleotide base (corresponding infrared spectrum specific wavelengths are 1070-1130cm/1 and 950-1000cm/1). The infrared spectroscopy method has the advantages of simple operation, high sensitivity, wide applicability, high credibility and the like, thereby effectively making up for various defects and shortcomings of sensory evaluation and electronic tongues.

The invention discloses a multimode biological identifying device and a method thereof. The multimode biological identifying device comprises three basic modes, namely, an infrared spectrum biological identifying technology, a hand biological identifying technology and a fingerprint biological identifying technology, and is characterized in that: by combining the infrared spectrum biological identifying technology, the hand biological identifying technology and the fingerprint biological identifying technology, a multimode comprehensive biological identifying system device is formed. According to the invention, a biological characteristic acquiring system is made by combining a laser technology, an infrared spectrum technology and a data acquiring technology, and the device consists of a biological signal acquiring unit, a signal transmitting and processing unit, a microprocessor unit, a control unit, a display and alarm unit and an interface unit. Due to the adoption of the multimode biological identifying method and the device thereof, the defect of low identifying rate of the conventional single-mode identifying system is overcome, a novel technical support is provided for an attendance system, a gate control system and a safety supervision system, high identifying accuracy is achieved, and the counterfeiting property of the system is ensured.

The invention discloses a lossless rapid method for discriminating true and false cigarettes by applying infrared spectroscopy technology. The method comprises: establishing a true cigarette standard infrared spectroscopy database and setting QC value thresholds; performing scan test on different discrimination points of cigarette materials used by a to-be-tested cigarette sample by infrared spectroscopy so as to obtain the infrared spectroscopy data of each discrimination point; retrieving corresponding true cigarette infrared spectroscopy data from the true cigarette standard infrared spectroscopy database, and calculating the QC value of each discrimination point between the two data; and deciding that the target sample is false cigarette if the QC value of any one discrimination point of the to-be-tested cigarette is lower than the set threshold, or else, deciding that the target sample is true cigarette. By employing the discrimination method provided by the invention, the cigarette sample is not damaged after detection and can be reused; the test time of each discrimination point is about 1 min, and consequently each cigarette sample can be detected in 8-10 min; and also the method is strong in specialization property and high in accuracy.

The invention discloses a radix astragali formula particle and preparation and quality control methods thereof. The formula particle uses radix astragali decoction pieces as raw materials, and the decoction pieces are processed by the technological processes of twice water extraction, vaccum concentration, sponging drying and the like to gain the radix astragali formula particle; and one gram of radix astragali formula particle is equivalent to 3 to 5 grams of crude medicines, and the quality of the radix astragali decoction pieces and the radix astragali formula particle is respectively discriminated by the infrared fingerprint spectra. The radix astragali formula particle of the invention has the advantages of integrated and advanced production process, specific and controllable quality control standard and advanced and realizable process, and a test method related to the quality standard is scientific, advanced, fast and highly operable. Proved by a lot of experiments, the ingredient of a herbal decoction prepared by the radix astragali formula particle of the invention is equivalent to the ingredient of the mixed simmer liquid of the radix astragali contained classical formula, the full ingredient formula particle process is achieved, and the process of the invention is proved to be reasonable; and the invention applies the infrared spectroscopy technology to the quality control of the traditional Chinese medicines, thereby fast solving the principal problem of traditional Chinese medicine truth discrimination in the macroscopic quality control of the traditional Chinese medicines.

The invention discloses a method for identifying matrix asphalt quality through an infrared spectroscopy technology. The method comprises the following steps of: obtaining the transmitted spectrum of matrix asphalt through a Fourier transform infrared spectrometer, and calculating the relative ratio B of peak areas of the characteristic infrared absorption peak of methyl in the matrix asphalt and the characteristic infrared absorption peak of methylene in the matrix asphalt on the transmitted spectrum; the matrix asphalt with calculated B value smaller than or equal to 0.190 is high quality matrix asphalt suitable for SBS (stimulated brillouin scattering) modification, the matrix asphalt with calculated B value of 0.190-0.201 is common matrix asphalt suitable for SBS modification, and the matrix asphalt with calculated B value larger than 0.201 is matrix asphalt not suitable for SBS modification. The method adopts the universal infrared spectroscopy technology, thereby being simple in sample preparation process, accurate and credible in judging result, good in sensitivity, good in reproducibility, capable of quickly identifying the quality of the matrix asphalt, and beneficial for managing and controlling the quality of the matrix asphalt and regulating the quality and application of the matrix asphalt.