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40results about How to "Meet testing requirements" patented technology
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A Prism-Coupled Surface Plasmon Resonance Biosensor
InactiveCN102262069ASimplify the build processLow costMicrobiological testing/measurementPhase-affecting property measurementsPrismOptoelectronics
The invention relates to a prism-coupled SPR biosensor, which comprises an optical plastic prism, an inner metal film layer, an outer metal film layer and a biological component layer; The outer metal film layer is deposited on the film layer, the inner metal film layer and the outer metal film layer can be two kinds of the same or different metal film layers, and the sum of the thickness of the inner metal film layer and the outer metal film layer is between 20-80nm The space meets the optical requirements for exciting surface plasmon resonance, and a biological component layer is fixed on the surface of the outer metal film layer. The present invention also relates to the use of the prism-coupled SPR biosensor in preparing biochips and its use in detecting interactions between biological samples.
Owner:BEIJING GP MEDICAL TECH
Gas chromatographic method for detecting residues of high-toxic organophosphorus pesticides in soil
InactiveCN103472175AEasy to separateMeet testing requirementsComponent separationPhosphamidonMethyl parathion
The invention relates to a gas chromatographic method for detecting residues of five high-toxic organophosphorus pesticides in different texture soils(loam, clay and sandy soil) so as to realize the qualitative and quantitative detection on the residues of methamidophos, parathion, methyl parathion, monocrotophos and phosphamidon pesticides in the soils. The gas chromatographic method is characterized in that acetonitrile is taken as an extracting agent, and after an extraction solution is concentrated with constant volume and is filtered, the trace analysis is directly carried out by using a gas chromatograph. The gas chromatographic method has the advantages that firstly a chromatographic column has a good separation effect on a target object, the accuracy degree of detection results is high, the reproducibility is good, and the sensitivity of the method meets the detection requirements of the residual pesticides; secondly compared with a GB / T14552-2003 (gas chromatographic method for determining organophosphorus pesticides in water and the soil), the national standard method is easier and more convenient, a pretreatment process of soil samples is simplified, the detection time is shortened, and the cost is saved.
Owner:邬金飞
Banana mature period identification method and apparatus based on deep convolution neural network
InactiveCN107590799AMeet production requirementsMeet testing requirementsImage analysisNeural architecturesConvolutional neural network
The invention discloses a banana mature period identification method and apparatus based on a deep convolution neural network. The banana mature period identification method based on a deep convolution neural network includes the steps: acquiring the banana images, to be detected, in different mature periods, during the agricultural production and food quality detection process; performing data cleaning and data extension preprocessing on the acquired banana images according to the corresponding mature period; combining with the characteristics of the banana mature period images to be identified, and accordingly designing the corresponding deep convolution neural network structure; taking the preprocessed banana images as the training data, utilizing the deep convolution neural network structure, and training the banana mature period identification model; and utilizing the trained banana mature period identification model to perform an accuracy test on the banana images to be identified, and if the test accuracy does not achieve the application standard, re-training the banana mature period identification model until achieving the application standard. The banana mature period identification method and apparatus based on a deep convolution neural network can avoid errors caused by human factors, can provide guarantee for banana quality detection, and can save a lot of manpowerand material resources.
Owner:SHANDONG NORMAL UNIV
Piston ring fatigue testing machine and fatigue testing method
ActiveCN106053053ARegulate the law of exerciseImprove test accuracyMachine part testingPiston ringThree phase asynchronous motor
The invention discloses a piston ring fatigue testing machine and a fatigue testing method. A pedestal is included. A lower end of the pedestal is fixedly provided with a three-phase asynchronous motor. The motor is connected to a camshaft through a belt pulley. A cam on the camshaft and one end of a spring push rod form cam push rod transmission cooperation. A middle portion of the spring push rod and a guide rail form sliding fit. The other end of the spring push rod is connected to a piston ring fixture body. A middle portion of the piston ring fixture body is provided with a sensor. The sensor and a control cabinet are electrically connected. A counter is arranged in the control cabinet. The control cabinet is installed on a top of the pedestal. The structure is simple and operation is convenient. Fatigue lives of eight groups of piston rings can be detected simultaneously. A condition that one piston ring generates an abnormal value during detection is prevented. One range where a data difference can be allowed and accepted is convenient to analyze. A force bearing condition of the piston ring in a fuel engine can be simulated and an effect of detecting whether the fatigue life of the piston ring accords with a design requirement is reached.
Owner:CHINA THREE GORGES UNIV
A stress-strain prediction method based on machine learning
InactiveCN109766618AMeet testing requirementsThe predicted value is accurateMeasurement devicesKernel methodsStrain sensorElastic modulus
The invention discloses a stress-strain prediction method based on machine learning, and belongs to the technical field of detection and prediction. The prediction method comprises the steps of takingthe machine learning as a medium, processing the stress-strain experiment data as input and output of a learning model, selecting a proper algorithm and the corresponding training parameters, training, so that a prediction network is obtained. During the prediction process, the computer is operated to control the loading force of the loading device each time, a demodulator is used for collectingthe measurement data, a data analysis software is used for processing the experimental data, an appropriate learning model is established, the model is trained, and therefore accurate prediction of the strain field of the tested system is achieved. The method is suitable for the stress-strain field prediction of any optical fiber strain sensor detection system, avoids the errors caused by consideration of determination of loading force and pre-tightening force, simplification of the elastic modulus range of a test piece and a complex model and the like, greatly improves the calibration precision, and is convenient and rapid to operate and easy to popularize.
Owner:DALIAN UNIV OF TECH
Multi-camera reconstruction method based on DLP surface structured light
ActiveCN113012277AImprove accuracyRealize multi-objective joint calibrationDetails involving processing stepsImage enhancementStereo matchingPoint cloud
The invention provides a multi-camera reconstruction method based on DLP surface structured light. The multi-camera reconstruction method comprises the steps that a four-eye structured light detection system is built, cameras are calibrated, a PC terminal generates Gray code and phase shift code patterns, a DLP projector is controlled to project, and a level signal triggers the cameras to shoot images obtained after coding patterns are modulated; correcting an image obtained by shooting and carrying out de-noising processing; decoding and unwrapping the de-noised Gray code pattern and the de-noised phase shift coding pattern respectively to calculate a truncation phase, and calculating an absolute phase value by combining the results of the Gray code pattern and the phase shift coding pattern; carrying out stereo matching to obtain point cloud information of the to-be-measured object; filtering the point clouds obtained by the two groups of binocular structured light systems, and preliminarily splicing the two groups of point clouds through rotation and translation transformation; according to the method, the high-precision coding process is completed through combination of the Gray code and the phase-shift code, the coding and decoding accuracy and the final reconstruction precision are improved, and the industrial detection requirement is met.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
FPGA accelerator, network parameter measurement system and method and medium
ActiveCN113141281AReduce loadReduce system power consumptionData switching networksHigh level techniquesEmbedded systemNetwork testing
The invention discloses an FPGA accelerator which realizes unloading and acceleration of a network test protocol in an FPGA by using an accelerator based on the FPGA, and task data does not need to be transmitted to a CPU (Central Processing Unit) for processing when being transmitted and received, so that the load of the CPU is reduced; the FPGA accelerator is high in data processing capacity, the full-bandwidth test requirement can be met, and high-precision measurement is achieved; meanwhile, an application program module in the equipment is built based on an Iperf protocol, and the Iperf protocol can be replaced based on test requirements, so that the expansibility is good; and due to the dynamic programmable characteristic of the FPGA accelerator, a corresponding test environment can be set up at any time according to needs, all operations are only execution of software instructions, hardware board cards do not need to be replaced, hardware connection relations do not need to be changed, and rapid positioning of faults is facilitated. The invention also discloses a network parameter measurement system and method and a readable storage medium, which have corresponding technical effects.
Owner:SHANDONG YINGXIN COMP TECH CO LTD
Application of double-positive imidazolium salt ionic liquid in extraction of bisphenol compound and micro-extraction technology based on ionic liquid
ActiveCN109470804ASimple and fast operationWide linear rangeComponent separationRepeatabilityIonic liquid
The invention provides application of double-positive imidazolium salt ionic liquid in extraction of a bisphenol compound. Double-positive imidazolium salts ionic liquid comprises one or combination of [C4(MIM)2]Br2 and [C6(MIM)2]Br2. In addition, the invention further provides a micro-extraction technology based on the double-positive imidazolium salt ionic liquid, and an extracting agent is double-positive imidazolium salts ionic liquid with double imidazole rings. An extracting process comprises the steps of adding a to-be-extracted matrix in a centrifugal tube and then diluting the to-be-extracted matrix, then adding the extracting agent in the centrifugal tube to obtain mixed liquid, and regulating PH of the mixed liquid to be 2-6; then adding LiNTf2 in the mixed liquid and then carrying out ultrasonic treatment; and finally, cooling the mixed liquid and carrying out centrifuging treatment to obtain precipitates so as to complete extraction. The micro-extraction method as shown inthe invention has the advantages of simplicity and convenience in operation, time saving ability and high efficiency, and environmental protection. The method is wide in linear range, good in repeatability and low in limit of detection, and is suitable for detecting and analyzing the bisphenol compound in a complicated matrix.
Owner:WENZHOU MEDICAL UNIV
Ball dropping testing fixture
Owner:达丰(重庆)电脑有限公司
Face recognition clock-in system and method
InactiveCN111667599AMeet testing requirementsRegistering/indicating time of eventsAcquiring/recognising facial featuresLoudspeakerEngineering
The invention discloses a face recognition clock-in system and method. The face recognition clock-in system comprises a face acquisition module, a light supplementing module, a setting module, a central processing unit, a second image acquisition module, a first image acquisition module and a third image acquisition module. According to the invention, the second image acquisition module, an expression recognition / analysis / comparison module, an expression early warning module and an expression database are arranged, so that when people use face recognition to punch a card, positive expressionsin the expression database are displayed through a display screen and a loudspeaker; and the third image acquisition module, a facial color recognition / analysis / comparison module, a health early warning module and a health database are arranged, so that the health state can be displayed through the display screen and the loudspeaker when people punch cards by adopting face recognition, so that therequirements of detecting facial expressions and human health can be satisfied.
Owner:ANHUI HUITENG INTELLIGENT TRANSPORTATION TECH CO LTD
Multistage parallel intensified fixed bed reactor and using method thereof
ActiveCN104437268ASmall pressure dropHigh speedChemical/physical processesFixed bedProcess engineering
The invention discloses a multistage parallel intensified fixed bed reactor and a using method thereof. The multistage parallel intensified fixed bed reactor comprises a raw material tank, a discharge tank, at least one parallel reaction unit, a circulation pipeline and a circulation pump, wherein each reaction unit comprises a charge pump, a charge heat exchanger, a discharge heat exchanger, a reactor shell and a plurality of fixed bed layer sections installed in the reactor shell; each fixed bed layer section is connected with a charge main pipe via a charge branch pipe; the charge main pipe is connected with the raw material tank; the charge pumps and the charge heat exchangers are arranged on the charge main pipe; each fixed bed layer section is connected with the discharge main pipe via a discharge branch pipe; the discharge main pipe is connected with a discharge tank; the discharge heat exchangers are arranged on the discharge main pipe; one end of the circulation pipeline is connected with the discharge tank, and the other end of the circulation pipeline is connected with the raw material tank; the circulation pump is arranged on the circulation pipeline. The multistage parallel intensified fixed bed reactor is compact in structure, convenient to operate and control, high in reaction efficiency, high in elasticity, convenient to maintain, and is especially suitable for modern large-scale production, and is an upgraded product of the traditional fixed bed reactor.
Owner:NANJING UNIV
Permanent magnet vacuum circuit breaker
InactiveCN112735905AReduce the transmission linkReduce energy consumptionSwitch power arrangementsHigh-tension/heavy-dress switchesMiniaturizationSwitchgear
The invention discloses a permanent magnet vacuum circuit breaker which comprises a circuit breaking unit and a bearing device used for installing the circuit breaking unit, the circuit breaking unit comprises a permanent magnet mechanism, an insulating part, a connecting assembly, a contact pressure spring, a conducting strip, a vacuum arc-extinguishing chamber, a switch static contact and a synchronizing assembly, and the permanent magnet mechanism comprises a movable core iron pull rod and a dustproof cover used for protecting the movable core iron pull rod. The connecting assembly comprises a first connecting rod, the movable core iron pull rod and the first connecting rod are each provided with a milled flat structure, the synchronizing assembly comprises a synchronizing shaft, a transmission pin, a synchronizing base and a synchronizing contact arm, and the synchronizing base guides the synchronizing shaft and the transmission pin. According to the permanent magnet vacuum circuit breaker, a direct driving design is adopted, many transmission links are reduced, the energy consumption is reduced, and the transmission efficiency is ensured to the maximum extent. The permanent magnet vacuum circuit breaker disclosed by the invention is designed to be integrally miniaturized, so that the reliability of an on-off circuit of a gas insulated switchgear can be improved, and shorter on-off time can be obtained.
Owner:MURGE ELECTRIC CO LTD
Extraction method of crocus sativus medicinal material DNA
InactiveCN105462962ACTAB method improvement and optimizationImprove experimental efficiencyDNA preparationMedicinal herbsCrocus sativus
The invention discloses an extraction method of crocus sativus medicinal material DNA. The method includes the steps of sufficiently grinding dried stigmas of crocus sativus through liquid nitrogen, adding 4*CTAB and phenol-chloroform of the same volume, conducting concentration, adding pre-cooling anhydrous ethanol and NaAc for sedimentation, conducting washing absolute ethyl alcohol, and storing the samples in a refrigerator with the temperature of -20 DEG C for standby application, wherein the volume of the pre-cooling anhydrous ethanol is two times of the volume of phenol-chloroform, the volume of NaAc is 20% of the volume of phenol-chloroform, and the volume of absolute ethyl alcohol is 2.5 times of the volume of phenol-chloroform. A traditional CTAB method is further improved and optimized, and the experiment efficiency is greatly improved. DNA obtained from crocus sativus medicinal materials through the method is high in quality, and the DNA purity meets the requirement for downstream application. The method has the advantages of being efficient, economical, safe and easy and convenient to use for medicinal material drying.
Owner:MINZU UNIVERSITY OF CHINA
Test instrument capable of monitoring layered settlement
PendingCN114837157AMeet testing needsEasy to makeIn situ soil foundationStructural engineeringHydrology
The invention discloses a test instrument capable of monitoring layered settlement, and relates to the technical field of soil monitoring, the device comprises at least two detection mechanisms, the at least two detection mechanisms are detachably connected in sequence in the vertical direction, each detection mechanism comprises an elastic piece, a gravity sensor and a layered plate, the gravity sensor is connected with one end of the elastic piece; one side of the layering plate is detachably connected with the other end of the gravity sensor, the other side of the layering plate is detachably connected with the elastic piece of the adjacent detection mechanism, and the layering plate iron sheet is perpendicular to the extension direction of the elastic piece. The at least two detection mechanisms are sequentially and detachably connected in the vertical direction, so that different numbers of detection mechanisms can be flexibly connected in series according to experiment requirements, the test requirements are met, and the problems of inapplicability, non-universality, difficulty in range change and the like of the layered settlement meter in scientific research experiments are solved.
Owner:ANHUI ROAD & BRIDGE GRP +1
A multi-camera reconstruction method based on dlp surface structured light
ActiveCN113012277BImprove accuracyRealize multi-objective joint calibrationDetails involving processing stepsImage enhancementPoint cloudStereo matching
The invention provides a multi-camera reconstruction method based on DLP surface structured light, including: building a four-eye structured light detection system, calibrating the camera, generating Gray code and phase shift code pattern at the PC end, controlling the projection of the DLP projector, and triggering the camera with a level signal Shoot the modulated image of the coding pattern; correct the captured image and perform denoising processing; decode and unwrap the denoised Gray code pattern and phase shift coding pattern respectively to calculate the truncated phase, and combine the results of the two for absolute Calculate the phase value; perform stereo matching to obtain the point cloud information of the object to be measured; filter the point clouds obtained by the two sets of binocular structured light systems, and perform preliminary splicing of the two sets of point clouds through rotation and translation transformation; The point cloud is fused and processed, and the surface is reconstructed. The present invention completes the high-precision encoding process by combining the Gray code with the phase-shift code, improves the accuracy of encoding and decoding and the accuracy of the final reconstruction, and meets the requirements of detection in the industry.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Image-type device and method for quantitative determination of infrared reflectivity and transmissivity
ActiveCN103196837BRealize quantitative detectionControl Printing QualityTransmissivity measurementsQuantitative determinationTransmittance
The invention provides an image-type device and a method for quantitative determination of infrared reflectivity and transmissivity. The method comprises firstly calibrating the reflectivity and the transmissivity of calibration cards with a plurality of different reflectivity or transmissivity, secondly collecting reflected and transmitted images of the calibration cards and to-be-detected objects under illumination of infrared LED light sources, and performing linearity interpolation in accordance with the reflectivity values and the transmissivity values of the calibration cards to obtain the reflectivity values and the transmissivity values of the to-be-detected objects at any positions in an imaging area, thereby realizing the quantitative determination of the reflectivity and the transmissivity. According to the invention, the above detection can be carried out for prints printed with infrared ink or white watermark, and thus printing quality can be effectively controlled. The method and the device are convenient and fast, flexible in function, and strong in expansibility, and can adjust optical devices and software configuration of host computers for different applications, thereby achieving detection requirements.
Owner:CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
Application of casein plate method in quantitative analysis of protease activity
PendingCN110484598AGood linear relationshipGood precisionMicrobiological testing/measurementBiological material analysisProteinase activityLinear relationship
The invention discloses application of a casein plate method in quantitative analysis of protease activity. According to the application, the casein plate method is utilized for detecting the activityof protease in colored food, it is shown through a result that the casein plate method is good in linear relationship, good in precision and repeatability and low in detection limit, and a result ofdetection for the activity of the protease in a colored sample is accurate, and a new method is provided for detection for the protease activity. The application has the advantages that the situationcan be effectively avoided that due to the sample has a too deep color, errors are caused, and a detection result is inaccurate, there are no requirements for the color and shape of the sample, the casein plate method can be applied to detection for light-color samples or colorless samples and can also be applied to detection for deep-color samples such as red pitaya, and the method is simple to implement, wide in application range and capable of meeting the general detection requirements. The casein plate method can be effectively applied to detection for the activity of enzymes in deep-colorproducts such as soy sauce and tea leaves.
Owner:GUIZHOU UNIV
Labview-based vehicle body controller automatic detection tool and automatic analysis method thereof
InactiveCN110928530ALow costImprove efficiencySoftware testing/debuggingSoftware designFunctional testingProduct testing
The invention discloses a Labview-based vehicle body controller automatic detection tool and an automatic analysis method thereof. The detection tool comprises a drive program writing module, a test function module, a combination module and an execution program module which are connected in sequence. The analysis method comprises the following steps of writing a driving program for each piece of hardware equipment used in the automatic detection process of a vehicle body controller according to the equipment type; developing a function module corresponding to an automatic detection jig for a vehicle body control product, calling each test function module, and running the program of each function test; configuring each drive program into a program format which can be called by a vehicle body controller product test function module through Labview; and running the main program, calling the corresponding test function module by the main program according to the actual function requirementof the vehicle body controller test, and calling the configured corresponding VI drive program by the test function module. The tool and a method help a user to develop an automatic detection test and a verification product test of the vehicle body controller more quickly, improve the efficiency and save the cost.
Owner:XIAMEN BODIAN ELECTRONICS
Device for detecting specific surface area and aperture of dynamic and static powder
PendingCN111693435ADetection speedImprove detection efficiencyPermeability/surface area analysisReal-time computingElectrical and Electronics engineering
The invention relates to a device for detecting the specific surface area and the aperture of dynamic and static powder, and belongs to the technical field of powder detection. The detection device comprises a static detection part for detecting by adopting a static method; a dynamic detection component which is used for detecting by adopting a dynamic method; and a gas supply component of which the output end is respectively communicated with the static detection component and the dynamic detection component and supplies standard gas to the static detection component and the dynamic detectioncomponent. The detection device has a static detection mode and a dynamic detection mode, the corresponding detection modes can be selected according to needs, the detection cost is reduced, and thedetection accuracy is improved.
Owner:成都精新粉体测试设备有限公司
EGR one-way valve opening pressure and opening degree feedback detection device and method
PendingCN113218652AResolve detectionSimple structureMachine valve testingFluid pressure measurementEngineeringCheck valve
The invention relates to an EGR one-way valve opening pressure and opening degree feedback detection device and method. An input flange with an input pressure sensor and an output flange with an output pressure sensor are arranged at the front end and the rear end of a simulation valve body respectively; a side transparent observation window is arranged on one side face of the simulation valve body, a camera is arranged outside the side transparent observation window, a laser displacement sensor is arranged outside a top transparent observation window, and a prismatic simulation valve seat and a reed serving as a valve clack are arranged in the simulation valve body. Opening of the EGR one-way valve reed is simulated through the closed simulation valve body with the transparent window, and the camera and the laser displacement sensor are used for recording various states of action and deformation of the reed, so that various working parameters of the reed are obtained, accurate data are provided for actual use of the reed, and the problems of check valve reed opening pressure detection, reed opening value detection under different pressures and the like are solved. The device is simple in structure, convenient to use and high in detection precision.
Owner:渭南美益特发动机减排技术有限公司
Multi-stage parallel reinforced fixed-bed reactor and using method thereof
ActiveCN104437268BSmall pressure dropHigh speedChemical/physical processesFixed bedProcess engineering
Owner:NANJING UNIV
Glycated hemoglobin extraction kit and extraction method
ActiveCN109734797BUniform compositionMeet testing requirementsHaemoglobins/myoglobinsPeptide preparation methodsLithium chlorideGlycerol
The invention discloses a glycosylated hemoglobin extraction kit and an extraction method, which relate to the field of biotechnology. The extraction kit is composed of cleaning solution A, cleaning solution B, eluent and storage solution, wherein: the components of the cleaning solution A are as follows: buffer solution pH7.0, sodium chloride, potassium chloride, sodium azide; The composition of the cleaning liquid B is as follows: HEPS Buffer, lithium chloride, magnesium sulfate, TCEP; the composition of the eluent is as follows: ammonium sulfate, ammonium chloride, triton, ethylene glycol; the storage liquid The ingredients are as follows: glycerin, TCEP, stabilizer, sodium azide. The invention has low requirements on operating equipment, and the extracted glycosylated hemoglobin can be preserved for a long time.
Owner:BIOBASE BIODUSTRY (SHANDONG) CO LTD
Rapid face-scanning payment equipment based on biological recognition technology and application method
InactiveCN113700995AReduce the influence of external disturbance factorsFast recognitionCharacter and pattern recognitionCash registersEngineeringSunlight
The invention discloses rapid face-scanning payment equipment based on a biological recognition technology and an application method, and relates to the technical field of face-scanning payment. A driving mechanism for driving a camera to move in an arc-shaped track is arranged in a shell; the equipment further comprises a shielding part and an auxiliary recognition part, wherein the camera is shielded through operation of the driving mechanism under the action of the shielding part, and hair on a face to be collected is blown away under the action of the auxiliary part. According to the equipment and the method, by making the camera conduct arc-shaped movement, multi-angle recognition can be conducted on the face, the rate of face recognition is increased, meanwhile, a shielding plate extends out, the situation that sunlight irradiates the camera is reduced, the camera is prevented from emitting light, meanwhile, air is sprayed to the face, hair can be blown open, the accuracy of face recognition is ensured, and the practicability is better.
Owner:张冠中
Surface plasma coupling fluorescence detection apparatus
InactiveCN101566568BStrong output powerStable monochromaticitySpectrum investigationFluorescence/phosphorescenceFluorescenceSurface plasmon
Surface plasma coupling fluorescence detection apparatus, relating to a fluorescence detection apparatus. The invention provides a surface plasma coupling fluorescence detection apparatus with small volume, simple structure, low cost, and high detection accuracy. The device is equipped with a light source, a light source rack, a rotating platform, a proof sample rack, a coupled device, a monochromator, a detector and a control processor. The light source is equipped on the light source rack, and the light source rack and the proof sample rack are equipped on the rotating platform. The coupleddevice is equipped on the proof sample rack. The monochromator is equipped on the side of the rotating platform, which receives fluorescence signal, and is connected with the detector. The detector isconnected with the control processor. The device provided by the invention has the characteristics of compact conformation and miniaturization. Laser pen can be used as light source, with small volume, strong energy, and the laser pen combined with minitype monochromator can be used for realizing instrumentation miniaturization.
Owner:XIAMEN UNIV
Traditional Chinese medicine filter pad, preparation method thereof and detection card comprising traditional Chinese medicine filter pad
PendingCN114544943ARegulate pHImprove solubilityOther chemical processesMembrane filtersPolyethylene glycolEngineering
The invention discloses a traditional Chinese medicine filter pad, a preparation method thereof and a detection card comprising the traditional Chinese medicine filter pad, the preparation method of the traditional Chinese medicine filter pad is as follows: a base membrane is soaked in a prepared solution, taken out and dried to obtain the traditional Chinese medicine filter pad, and the prepared solution comprises a borate buffer solution and a mixed solution of polyethylene glycol and sugar. Components in the prepared liquid can absorb the color and filter residues of the traditional Chinese medicine liquid to be detected added from the sample hole, so that the background of the observation window is clear after the subsequent traditional Chinese medicine liquid to be detected and colloidal gold are mixed and moved to the chromatography membrane. The traditional Chinese medicine filter pad is additionally arranged below the sample adding hole of the shell on the basis of an existing detection card, so that the color of traditional Chinese medicine liquid to be detected can be effectively filtered, the flowability of the traditional Chinese medicine liquid to be detected cannot be influenced, the background of the observation window is clear, and a detection result is easy to observe.
Owner:GUANGZHOU ANNUO FOOD SCI & TECH CO LTD
A low-speed impact test fixture with continuously adjustable impact angle
An impact angle continuously adjustable low-speed impact test clamp comprises a clamp upper clamping plate, a planar rotation angle scale, a test piece fixing plate, a top plate, a pointer, a centringtriangular block, a rotating shaft, an elevation angle scale, a baffle, a square-head supporting column, a connecting shaft, a bulletheaded supporting column, an upper fixing nut, a lower fixing nut,a supporting bottom plate, a laser emitter, a supporting cylinder and a fixing plate. The impact angle continuously adjustable low-speed impact test clamp provided by the present invention can adjustmultiple angles of a test piece continuously, and can realize the planar rotation of multiple directions of the test piece, so that on the condition of not changing an original impact mode, and by aspecial mechanical structure, the impact angle continuously adjustable low-speed impact test clamp satisfies the impact demands of different angles and directions, is low in cost, simple in structure,strong in transportability and small in floor space, is easy to operate, enables the cost for manufacturing the test clamps of different angles to be reduced substantially, and can supplement or substitute for the conventional test equipment in function to reach the test demands.
Owner:CIVIL AVIATION UNIV OF CHINA
Multichannel data acquisition circuit
PendingCN111464183AMeet testing requirementsMany test pointsAnalogue-digital convertersProduction lineData acquisition
The invention provides a multichannel data acquisition circuit. The circuit comprises a multi-channel switching circuit, a voltage detection circuit, a power supply circuit and an external 12V switching power supply, 5V and 3.3V are provided by an arduino development board, and -12V is provided by the power supply circuit. The detection circuits of which VSS is connected with-12V and VDD is connected with +12V and 56 channels of the analog switch are divided into eight groups, and each group comprises seven test points which correspond to eight tested mainboards and seven test points of the tested mainboards. The eight mainboards are synchronously tested, one of the seven channels of the eight analog switches is controlled to be conducted by arduino, logic is controlled to be opened for one of the seven channels at the same time, and switching is performed to the next test point at the same time after the test of the corresponding test point is completed. The circuit provided by the invention meets the testability requirement on an actual production line, is simple, has many test points, can test eight mainboards at the same time, is mature and reliable in arduino development board, can be quickly developed and deployed, and saves a lot of manpower and material resources.
Owner:ZHEJIANG WEIXING INTELLIGENT METER STOCK
Cross-end-based UI automatic testing method
PendingCN114036049AMeet testing requirementsMeet diverse needsSoftware testing/debuggingExecution paradigmsTest efficiencyBusiness enterprise
The invention discloses a cross-end-based UI automatic test method. The method realizes unified cross-end UI automatic test by modifying and upgrading cross-end UI automation, supports to use a set of script specifications to test Android, iOS, Web and other programs, meets the test requirements of different types of products, facilitates the user to build an operation environment, increases the testing efficiency, reduces the labor cost of an enterprise, and meanwhile ensures the product quality.
Owner:四川启睿克科技有限公司
A kind of preparation method of medicinal glacial acetic acid
ActiveCN107216247BAffect purityImprove oxidation effectCarboxylic compound separation/purificationAutomatic controlAceric acid
The invention discloses a preparation method of medicinal glacial acetic acid. The preparation method is characterized by comprising the following steps: (1) carrying out oxidization treatment: adding excessive hydrogen peroxide into a raw material industrial acetic acid to obtain an oxidized product; (2) carrying out molecular sieve absorption: enabling the oxidized product to pass through a ZSM-5 molecular sieve to obtain an impurity-removed product; (3) carrying out azeotropic distillation: adding an azeotropic agent into the impurity-removed product and putting a mixture into a rectifying tower and carrying out the azeotropic distillation, wherein the azeotropic agent is one of ethyl acetate, isopropyl acetate and butyl acetate; controlling tower top temperature to be 64 DEG C to 80 DEG C and collecting a kettle bottom product to obtain primary-grade glacial acetic acid; (4) absorbing water by copper sulfate: introducing the primary-grade glacial acetic acid into a copper sulfate absorption device and collecting a flowing-out product from the copper sulfate absorption device to obtain a product. The preparation method of the medicinal glacial acetic acid, disclosed by the invention, has the advantages of simple preparation method, energy saving and environmental friendliness; the medicinal glacial acetic acid is directly prepared from the industrial acetic acid and automatic control is realized; the obtained medicinal glacial acetic acid has high purity and meets the requirements of Chinese Pharmacopoeia.
Owner:台山市新宁制药有限公司
Equipment system testability evaluation calculating method
InactiveCN104346527AImprove effectivenessMeet testing requirementsSpecial data processing applicationsComputing MethodologiesSystems design
The invention discloses an equipment system testability evaluation calculating method which comprises steps as follows: step A, working principles and characteristics of an equipment system are analyzed, the use demand and testability demand of the equipment system are summarized, a diagnostic scheme and testability requirements are determined, and testability design criteria are established; step B, a comprehensive weighting influence set is established with a comprehensive weighting method according to the influence degree of the testability design criteria relative to the testability requirement; and step C, conditions, according with the testability design criteria, of sub-objects of the equipment system are analyzed with a top-down method, and a testability value is obtained in combination of the comprehensive weighting influence set, so that the testability design of the equipment system are checked and evaluated. According to the equipment system testability evaluation calculating method, the diagnostic scheme and the testability requirements are taken as main evaluation factors, the equipment system is subjected to objective and effective analysis in combination of other requirements of equipment system design and conventional resources, and the method is widely applied in the development process and design identification of the equipment system.
Owner:中国船舶重工集团公司第七二六研究所
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