142 results about "Colorimetry" patented technology

The invention relates to a backlight module LED model selection method and device, electronic equipment and a storage medium, and the method comprises the steps: responding to a data configuration operation in a graphical interface, and obtaining a configured reference spectrum data source, a diaphragm penetration rate frequency spectrum and a liquid crystal panel penetration rate frequency spectrum; performing spectrum modulation simulation processing on the reference spectrum data source, the diaphragm penetration rate spectrum and the liquid crystal panel penetration rate spectrum according to an optical structure hierarchical relationship of a simulation backlight module to obtain colorimetric parameters of the simulation backlight module; and determining a backlight module LED model selection result according to the colorimetric parameters. In this way, the actual assembling and measuring process of the backlight module is converted into mathematical operation, the backlight scheme of the simulated backlight module can be evaluated under the condition that the backlight module is not actually assembled, then the optimal LED model selection result of the simulated backlight module is determined, the development efficiency of the newly-assembled screen backlight module is improved, and the development cost is reduced.

The invention discloses a soil in-situ nitrogen, phosphorus and potassium measuring system based on a digital colorimetric method, which comprises a base and an upper computer, and a monitoring box is arranged on the base through a support column; a colorimetric assembly and a data acquisition assembly acting on the colorimetric assembly are arranged in the monitoring box; an energy assembly is arranged on the monitoring box, the data acquisition assembly is electrically connected with the upper computer and the energy assembly, and a water supplementing assembly and an extraction assembly are arranged on the side wall of the monitoring box; the extraction assembly is communicated with the colorimetric assembly; a developing colorimetric method is introduced through the water supplementing assembly, the extracting assembly and the colorimetric assembly, the data collecting assembly is supported through the energy assembly, developing data are collected and transmitted to the upper computer to extract color information, and rapid and accurate determination of nitrogen, phosphorus and potassium in soil can be rapidly achieved without an electrode sensor.

The invention discloses a light formula generation method and system based on dendrobium officinale polysaccharide synthesis, particularly relates to the technical field of plant factory light environment regulation and control, and is used for solving the technical bottlenecks of polarization state instability and insufficient light signal penetration uniformity caused by environment interference in existing polarization state light regulation and control. A polarization state distortion area is sensed in real time based on Stokes parameters, physical interference factors of a reflection path and medium scattering are extracted, polarization state compensation parameters are generated through cross-correlation modeling, a laser light source direction angle and a phase delay amount are cooperatively optimized, and re-calibration of a distortion matrix is triggered through colorimetric method penetration uniformity verification; through closed-loop logic of physical interference traceability and dynamic compensation, the polarization stability of optical signals and the penetrability of plant tissues are synchronously improved, and efficient cooperation of a dendrobium officinale light response mechanism and a polysaccharide synthesis path is guaranteed.

The invention belongs to the field of analysis and detection, and provides a non-diagnostic method for detecting uric acid in serum based on biochar magnetic nano-enzyme colorimetry. According to the method, the biochar magnetic nano-enzyme is used for activating the potassium hydrogen peroxymonosulfate, then the 3, 3 ', 5, 5'-tetramethylbenzidine is oxidized to generate a blue characteristic product ox-TMB, and the uric acid can inhibit the reaction process, that is, within a certain quantity range, the concentration of the uric acid can be judged according to the change of the absorbance of a reaction system. The nano enzyme is easy to synthesize, low in cost and capable of being stored for a long time, and the uric acid detection method constructed by the invention is low in detection limit (3.85 mu mol / L), wide in linear range (50-1000 mu mol / L), relatively simple, rapid and cheap, and expected to be widely applied to serum uric acid detection.

The invention discloses a yarn photographing and color measuring method and system based on texture feature weighted correction, and belongs to the technical field of computer digital image processing, and the method comprises the steps: building a photographing and color measuring system; shooting a digital image of the yarn sample by using a digital camera; segmenting the image by using a K-means clustering algorithm, and accurately separating yarns from a background region; the center line of the yarn is extracted through a skeletonization algorithm; a digital camera is used for shooting a training sample digital image, and the RGB value of each color block is extracted; constructing a spectrum reconstruction matrix based on the training sample; reconstructing the spectrum of each pixel point in the center line area of the yarn through the spectrum reconstruction matrix; calculating chromaticity data corresponding to the reconstructed spectrum according to a colorimetry theory; and finally, in combination with a texture weighting method, yarn color correction measurement data is obtained. The method overcomes the defect that an existing photographic color measurement method neglects the influence of texture features on a color measurement result, and the photographic color measurement result of the yarn is combined with real visual perception.

An inkjet printing apparatus includes: a positional displacement amount calculation unit configured to, during printing processing, calculate a positional displacement amount of printing paper in a paper width direction based on colorimetric data obtained by colorimetry of a color chart by a colorimeter; a colorimeter movement mechanism configured to move the colorimeter; and a colorimeter movement control unit configured to control an operation of the colorimeter movement mechanism based on the positional displacement amount calculated by the positional displacement amount calculation unit.

To determine whether a color material of printed matter has been stabilized in a short time without being affected by a difference in content of the printed matter or a printing condition.SOLUTION: A printing system 10 includes: a printer 100 that prints any printed matter on a printing medium; and a colorimeter 200 that measures a color of the printed matter. The printer includes: a printing part 103; and a print control unit 110 that causes the printing part to print, based on information on the printed matter, a measurement patch to be used for measurement of stabilization of a color material of the printed matter and the printed matter, on the printing medium. The colorimeter includes: a colorimetry part 203; and a colorimetry control unit 211 that causes the colorimetry part to measure the measurement patch and determines, based on an amount of change in color of the measurement patch, whether the color material of the printed matter has been stabilized.SELECTED DRAWING: Figure 2

The present invention discloses a phosphate detection method using a colorimetric method and electrochemical test paper, which belongs to the field of environmental monitoring. Specifically, the phosphate content in the water body is first semi-quantitatively detected by standard colorimetric test paper, and then the electrochemical test paper with a paper base is used to select cyclic voltammetry or square wave pulse voltammetry according to the colorimetric result to detect the phosphate concentration in the water body; when the phosphate content calculated as phosphorus in the colorimetric result is higher than 5 mg / L, the water sample is diluted by half and then detected by cyclic voltammetry; when the phosphate content calculated as phosphorus in the colorimetric result is within the range of 0.5 to 5 mg / L, cyclic voltammetry is used for detection; when the phosphate content calculated as phosphorus in the colorimetric result is lower than 0.5 mg / L, square wave pulse voltammetry is used for detection. The detection process of the present invention does not require the addition of other reagents, has a wide and accurate detection concentration range, and can achieve simple and fast in-situ detection of phosphate.

A display device that includes: a glass substrate comprising a refractive index (nsubstrate); a display device structure coupled to the substrate to collectively define a viewing area; and a black mask structure surrounding the display device structure that is coupled to the substrate and comprises a black ink layer and at least one glossy layer between the black ink layer and the glass substrate. The viewing area is characterized by (a) a reflectance from 0.5% to 2.5% as measured at 8 degrees from normal in the visible spectrum, (b) a brightness in the CIE colorimetry system such that 5<L*<17 for the specular component included (SCI), and (c) a brightness in the CIE colorimetry system such that 0<L*<3 for the specular component excluded (SCE). Further, the at least one glossy layer comprises a refractive index (nglossy) such that |nglossy−nsubstrate|>0.1.

The invention discloses an RGB-LED spectrum closed-loop system for colorimetry teaching and a color matching method. The system comprises a multi-source input module, a spectrum database module, a dynamic modeling module, an optimization algorithm engine module, a duty ratio calculation module, a PWM driving module and a closed loop verification module. The system is provided with a multi-source input interface, target color coordinates can be obtained, and chromaticity conversion of RGB input is supported; on the basis of the constructed high-precision linear model, solving a normalized strength ratio under constraints by combining an optimization algorithm engine and taking minimization of chromatic aberration as a target; calculating an actual PWM duty ratio according to the actual PWM duty ratio; meanwhile, a spectral irradiation sensor is integrated to collect a mixed color spectrum in real time, actual color coordinates are calculated, and an offset connecting line with an arrow between a target point and an actual point is dynamically drawn in a chromaticity diagram, so that a set of complete visual teaching tool is formed. Compared with a manual color matching scheme, the color mixing precision and the color matching efficiency are greatly improved, and the teaching requirements of colorimetry can be better met.

The invention relates to the field of dental restoration, in particular to a tooth colorimetric method, system and device, and the tooth colorimetric method comprises the following steps: step 1, determining a plurality of predetermined materials, and presetting an adjustment value delta L corresponding to each predetermined material; step 2, obtaining reflection spectrum data S1 (lambda) of the surface to be measured, and obtaining an initial lightness value L1 according to the reflection spectrum data S1 (lambda); step 3, preprocessing the reflection spectrum data S1 (lambda); step 4, comparing the preprocessed reflection spectrum data S1 (lambda) with standard spectrum data S2 (lambda) corresponding to each predetermined material, and outputting a comparison result; 5, determining the material type of the surface to be detected according to the comparison result; and step 6, determining a corresponding adjustment value delta L according to the determined material type of the surface to be measured, and calibrating the initial lightness value L1 through the adjustment value delta L to obtain an actual lightness value L2. According to the invention, the aesthetic property of tooth restoration and patient satisfaction are guaranteed.

The invention provides a device and a method for acquiring multi-point chromaticity coordinate values on the surface of a shot object, and mainly relates to the fields of color vision, colorimetry, color communication, image processing, computer control, deep learning, applied mathematics and the like. The problems that the multi-point chromaticity coordinate value of the surface of an existing shot object is difficult to measure, inaccurate in measurement and high in measurement cost are solved, and the multi-point chromaticity coordinate value of the surface of the shot object is calculated by obtaining a group photo image of the shot object and a color block group under the irradiation of different spectral distribution light sources.

The invention belongs to the technical field of preparation and rapid detection of composite materials, and particularly relates to a construction method and application of a high-sensitivity fluorescent probe for rapidly analyzing acrylamide in high-temperature processed food. According to the method, acrylic acid-N-succinimide ester (NAS) is grafted on carbon dots (CDs) and grows into a europium-based fluorescent metal organic framework (Eu-MOF) in situ, a ratio type fluorescent probe capable of being used for high-sensitivity detection is constructed, and compared with traditional technologies for detecting acrylamide in high-temperature processed food through liquid chromatography, enzyme-linked immunosorbent assay and the like, the ratio type fluorescent probe has the advantages that the ratio type fluorescent probe can be used for high-sensitivity detection; the method has the advantages of high sensitivity and high detection speed. The constructed ratio-type fluorescent probe can weaken the interference of external factors, has the advantage of strong anti-interference capability, and can improve the reliability of an analysis result; meanwhile, a visualization method is adopted, colorimetry is combined with a smart phone, and the method is easier to obtain by the public, so that the practical applicability is improved, and the application prospect is wide.

The present application provides a machine learning-based external standard-free sample quantitative detection method, characterized in that it comprises the following steps: (a) adding the sample on a medium carrier or into a detection kit, and imaging the sample; (b) automatically analyzing the image signal of the sample image and predicting the sample concentration result by using a trained machine learning model; and (c) outputting the sample quantitative result. By combining the concept of traditional colorimetry with popular machine learning methods, an intelligent device algorithm is developed, making it possible to have a more convenient and rapid sample detection scheme compared with traditional colorimetry.

The present invention discloses a dual-mode intelligent substance detection method based on bivalent nucleic acid aptamers, which includes two detection modes: fluorescence and colorimetry. This method belongs to the field of analytical chemistry. The present invention combines a bivalent aptamer with a double hairpin structure with its complementary sequence. Under the action of sodium borohydride and silver nitrate, DNA-silver nanoclusters and DNA-adsorbed silver nanoparticles are formed at different times and temperatures, respectively. In both detection modes, the bivalent aptamer acts as a molecular recognition target, and its complementary sequence acts as a signal-enhancing probe. Rapid, ultrasensitive detection is achieved by detecting fluorescence, absorbance, and analyzing the R+B value of colorimetric images using a smartphone app. This detection method is simple to operate, efficient, and sensitive, and exhibits good recovery and anti-interference capabilities in spiked sample testing. It has promising application prospects in the qualitative and quantitative analysis of aminoglycoside antibiotic compounds.

A colorimetric system includes a terminal device and an information processing device. The terminal device includes a transmitter that associates a colorimetric value indicating a color of a colorimetry target subjected to colorimetry by a colorimetric device with accompanying information including at least one of a captured image of the colorimetry target and positional information of the colorimetry target and transmits the colorimetric value and the accompanying information. The information processing device includes a receiver that receives the colorimetric value and the accompanying information, and a display unit that displays the colorimetric value and the accompanying information in a state in which the colorimetric value is associated with the accompanying information.

The information processing apparatus obtains information relating to colorimetry from a colorimeter connected to the information processing apparatus; and controls, the colorimeter to execute calibration, based on the obtained information relating to colorimetry.

A colorimetry device includes a support base having a support surface for supporting a measurement target and a carriage to which a colorimeter is detachably attached and that is configured to move in a first direction, which is a direction along the support surface, and in a second direction, which is a direction along the support surface and which intersects the first direction, the colorimeter being configured to measure color of the measurement target, wherein the carriage includes, on an inner wall of an accommodation section that accommodates the colorimeter, a contact surface that is in contact with a side surface of the colorimeter when the colorimeter is attached or detached and a friction coefficient μ1 between the contact surface and the side surface of the colorimeter is smaller than a friction coefficient μ2 between the housing of the carriage and the side surface of the colorimeter.

A water integrity control and disinfection method and system that measures key water parameters and can diagnose water integrity instability trends that result in loss of water integrity. Relevant water parameters that are predictive of water integrity such as cell null value as measured by in-line colorimetry provide early warning and prediction of problematic trends in the water integrity so that the system can pro-actively respond appropriately and prevent, mitigate or reverse the instability trend and maintain microbiological control of the water supply.

The invention relates to the technical field of material science and engineering, and discloses a calcium carbonate powder chromaticity detection method, which comprises the following steps of: collecting samples from vertical and horizontal directions by using a tool according to a layering and zoning principle, classifying, pretreating the samples, measuring the samples by using a colorimeter, averaging, and detecting the state of a monitoring instrument; the method comprises the following steps: detecting the chromaticity of the calcium carbonate powder by using a visual colorimetric method, re-detecting or replacing an instrument when the chromaticity is abnormal, switching the visual colorimetric method when the instrument detects the abnormity, operating by multiple persons, and finally comprehensively analyzing the two types of detection data, thereby ensuring that the calcium carbonate powder can obtain accurate chromaticity detection results under different conditions by combining the dual detection means of the instrument detection and the visual colorimetric method; in the instrument detection process, through a real-time monitoring and fault processing mechanism, the abnormal condition of the instrument can be effectively handled, the stability of detection data is ensured, meanwhile, the visual colorimetric method serves as an auxiliary means, reliable reference can be provided when the detection result of the instrument has questions, and the accuracy of the detection result is further verified.

1. The name of the design product: colorimetric device. 2. The use of the design product: used to determine the color of the solution to be tested when detecting water quality by colorimetry. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combined state perspective view 1. 5. Other circumstances that need to be explained: the appearance design of the assembly product is requested to be protected; the product includes two assemblies, assembly 1 is a color matching frame, assembly 2 is a reagent box, and assembly 2 includes assembly 3 and assembly 4, assembly 3 is a box cover, and assembly 4 is a box body; the box body is made of transparent material; since the partial view of assembly 3 and assembly 4 cannot clearly show the lines of assembly 3 and assembly 4 under the same scale, the A-A sectional view of assembly 3, the left view of assembly 4, and the right view of assembly 4 are submitted.

The invention discloses a method for multicolor detection of malathion based on Fe-Zr bimetallic nano-enzyme, a Fe-Zr bimetallic active center is formed, the synthesized Fe3O4-coated PDA-coated UiO-66 shows excellent peroxidase-like catalytic activity, the malathion can be combined with a composite material through a Zr-O-P bond, and the composite material can be used for detecting the peroxidase-like catalytic activity of the malathion, so that the malathion-coated UiO-66 can be used for detecting the peroxidase-like catalytic activity of the malathion-coated UiO-66, and the malathion-coated UiO-66 can be used for detecting the peroxidase-like catalytic activity of the malathion. By combining the Au NRs, multicolor detection of malathion is realized. The multicolor colorimetric detection method disclosed by the invention gets rid of the limitation that the traditional colorimetric method depends on different shade changes of a single color, so that the visual resolution is relatively poor, and the colorimetric signal can be combined with the smart phone, so that on-site instant detection is facilitated; meanwhile, a new way is provided for designing and applying the effective nano-enzyme to carry out pesticide field monitoring.

The invention provides a pellet metallurgical performance prediction method based on a colorimetric principle, and relates to the technical field of pellet metallurgical performance detection. The method comprises the steps of pellet surface pretreatment, pellet pre-classification, pellet colorimetry data acquisition, pellet metallurgical performance determination, linear regression model establishment, performance inspection, data set transformation and new linear regression model establishment. According to the method, the colorimetric parameters are collected, the metallurgical performance of the pellets is measured, the linear regression equation model is established, and the metallurgical performance of the pellets is matched and predicted according to the linear regression equation model, so that the defects of danger, time consumption and the like during traditional metallurgical performance measurement are overcome, and the method has important significance in promoting pellet detection and analysis means progress, safe production and efficient intelligent production; the method is simple and easy to operate, green and environment-friendly, low in cost, short in process, high in efficiency and beneficial to industrial large-scale production and popularization.

The present invention provides a fluorescent probe and its preparation method and application. The structural formula of the fluorescent probe is as follows: The preparation method is: 7-N,N-diethylamino-2H-chromene-3-aldehyde, 4-methyl-N-(4'-boronic acid pinacol benzyl) pyridine bromide, a catalyst and a solvent are stirred, mixed and heated under reflux for reaction, and then filtered and recrystallized to obtain a fluorescent probe product. The probe has good water solubility, biocompatibility and is positively charged. The solution color is purple-red, the absorption peak is at 540nm, and the fluorescence peak is at 720nm (near-infrared region), which can be used for near-infrared biological fluorescence imaging. The probe has the property of realizing ratiometric colorimetry and ratiometric fluorescence response to peroxynitrite. After reacting with peroxynitrite in a CH3CN-pbs (v / v=1:1, v / v, pH=7.4) solution, the color of the probe solution changes from purple-red to slightly yellow, A 410nm / A 540nm The probe has a linear relationship with the concentration of peroxynitrite in the range of 0 to 10 μM, with a detection limit of 95 nM. The red fluorescence of the probe gradually weakens at 720 nm and the bright yellow fluorescence gradually increases at 568 nm. 568nm / I 720nm The probe has a linear relationship with peroxynitrite concentration in the range of 0 to 16 μM, with a detection limit of 10 nM. The probe has the advantages of high sensitivity, low detection limit, and low background fluorescence interference.

The invention discloses a determination method for improving the accuracy of special acrolein and reductants thereof, and relates to the technical field of determination of special acrolein and reductants thereof, and the determination method comprises the following steps: sucking 40% of a glycerin solution, injecting the glycerin solution into a colorimetric tube, and adding 10% of an ammonia water solution and 10% of a silver nitrate solution to form a sample solution; absorbing 0.005% of glucose solution, injecting into another colorimetric tube, and adding 10% of ammonia water solution and 10% of silver nitrate solution to form a standard solution; putting the two colorimetric tubes into a water bath at 61-62 DEG C without being covered with plugs; inserting a thermometer into the sample solution, taking out the thermometer when the temperature reaches 60 DEG C, and keeping in a dark place for 10 minutes; taking out the colorimetric tube, respectively pouring the two solutions into two clean and dry cuvettes, carrying out colorimetry by taking distilled water as a reference and adopting a spectrophotometric method, and comparing the absorbance of the standard solution and the absorbance of the sample solution. The accuracy of the measurement result can be improved.

To provide a technique for performing scanning and colorimetry of a pattern by one time conveyance of a printing medium without rewinding.SOLUTION: The recording device includes a transport control unit that performs transport control of the print medium, a printing unit that prints a first pattern and a second pattern including overlapping gradation ranges on the print medium in one transport, a first measurement unit that measures the first pattern of the print medium transported in first transport control, and a second measurement unit that measures the second pattern of the print medium transported in second transport control. After printing the first pattern, the printing unit prints the second pattern such that a distance between the second measurement unit and the second pattern at a start time point of switching from the first transport control to the second transport control is equal to or larger than a transport distance by which the printing medium is transported during switching from the first transport control to the second transport control.SELECTED DRAWING: Figure 3

The invention discloses a method for ratio type colorimetric detection of perchlorate. The method comprises the following steps: performing specific surface modification on gold nanoparticles, constructing a methylene blue functionalized gold nanoparticle (MB (at) AuNPs) colorimetric probe, inducing a particle aggregation effect by utilizing specific interaction between perchlorate and MB (at) AuNPs, triggering red shift of a localized surface plasma resonance absorption peak of the probe, and detecting the concentration of the MB (at) AuNPs. And a 523 nm (dispersed state characteristic peak) and 660 nm (aggregation state characteristic peak) dual-wavelength absorption signal is formed. Ratio-type quantitative analysis is realized by calculating the ratio (A660 / A523) of the absorbance of the two wavelengths, and the defect that single-signal detection is easily influenced by environmental fluctuation and system condition change is effectively avoided. Based on the response characteristics, a dual quantitative relation between the ratio of the concentration of the perchlorate to the absorbance and the ratio of the color intensity of an image collected by the smart phone is further established, and an ultraviolet-visible spectrophotometry-smart phone image analysis dual-mode detection system is constructed. Wherein the detection limit of the spectrum detection mode is 2.77 [mu] M, and the detection limit of the smart phone auxiliary detection mode is 5.63 [mu] M. The method is simple and convenient to operate, does not need a large-scale analytical instrument or complex sample pretreatment, has the advantages of good sensitivity, stability and visual discrimination, can quickly realize on-site screening and accurate quantification of perchlorate in water and food samples, and is high in practicability and wide in popularization prospect.

The application discloses a kind of based on bimetallic nanometer enzyme paper-based colorimetric detection mycotoxin method and application, method includes first preparing bimetallic nanometer enzyme UiO66-NH2@Pt / Pd, then nucleic acid aptamer modified UiO66-NH2@Pt / Pd is loaded on paper-based chip, different mycotoxin concentration sample is added dropwise to carry out reaction, then add color developing agent containing TMB and H2O2 and carry out color developing reaction, utilize smart phone to identify color intensity and obtain RGB value, select the linear curve of the highest fitting degree between mycotoxin concentration and RGB value as mycotoxin detection standard curve, then according to the RGB value of measured sample, the content of mycotoxin is detected.The method of the application has the advantages of low cost, simple operation, rapid response, strong anti-interference ability, wide detection range, can be used for on-site detection, etc., can be applied to detect the residue of mycotoxin in environment and food.

A display device that includes: a glass substrate comprising a refractive index (nsubstrate); a display device structure coupled to the substrate to collectively define a viewing area; and a black mask structure surrounding the display device structure that is coupled to the substrate and comprises a black ink layer and at least one glossy layer between the black ink layer and the glass substrate. The viewing area is characterized by (a) a reflectance from 0.5% to 2.5% as measured at 8 degrees from normal in the visible spectrum, (b) a brightness in the CIE colorimetry system such that 5<L*<17 for the specular component included (SCI), and (c) a brightness in the CIE colorimetry system such that 0<L*<3 for the specular component excluded (SCE). Further, the at least one glossy layer comprises a refractive index (nglossy) such that |nglossy−nsubstrate|>0.1.

A printing system includes: a printer that prints an arbitrary printed product on a printing medium; and a colorimeter that measures a color of the printed product, in which the printer includes a printing part, and a colorimetry controller that causes the printing part to print, based on information on the printed product, a measurement patch to be used for measurement of stabilization of a color material of the printed product and the printed product on the printing medium, and the colorimeter includes a colorimetry part, and a colorimetry controller that causes the colorimetry part to measure the color of the measurement patch and determines, based on an amount of change in the color of the measurement patch, whether the color material of the printed product has been stabilized.