123results about How to "Short detection cycle" patented technology

This invention discloses a concrete testing device for road and bridge construction, relating to the field of concrete testing. It includes a sample holder and a movable pressure plate. Vertical plates are fixed to both sides of the upper surface of the sample holder, and top plates are fixed to the top of each of the two vertical plates. A limiting groove for placing concrete blocks is formed at the center of the upper surface of the sample holder. The pressure plate is located above the limiting groove, and a groove is formed at the center of the upper surface of the pressure plate, in which a liquid storage cylinder is fixed. Liquid permeation holes are formed at the groove and at the bottom of the liquid storage cylinder on the lower surface of the pressure plate. A pressure application component and two transmission components are provided above the liquid storage cylinder. The two transmission components are symmetrically arranged on the pressure application component. Each of the two rope-winding rollers has an inner sprocket tooth on one corresponding spoke. This invention achieves simultaneous testing of concrete compressive strength and impermeability, shortens the testing cycle, and restores the stress environment of road and bridge concrete during actual service, improving the comprehensiveness and reliability of the test data.

The invention belongs to the technical field of image recognition and electronic manufacturing detection, and particularly relates to a voidage detection method for a bottom terminal component. Firstly, a YOLOv8 model is used for accurately positioning a welding spot area in an image, then a semantic segmentation model EAUNet introducing an edge auxiliary task is used for achieving fine recognition of a cavity area and a soldering tin area, finally, calculation of the welding spot voidage is completed through pixel-level statistics, a set of complete automatic detection process is constructed, the detection period is greatly shortened, and the detection efficiency is improved. And the method is deployed and operated in an actual SMT production line, and the engineering feasibility of improving quality and efficiency by using a deep learning method in electronic manufacturing quality detection is verified.

The invention discloses a method for identifying Xinhui pericarpium citri reticulatae and pericarpium citri reticulatae, which is characterized in that four active ingredients including hesperidin, nobiletin, tangeretin and 2-methylamino methyl benzoate are simultaneously detected through high performance liquid chromatography, and distinguishing is realized according to detection data. The method comprises the following specific steps: preparing a mixed reference solution and a test solution, extracting a test with methanol, performing ultrasonic treatment, and filtering, specific chromatographic conditions are adopted for detection, the detection wavelength of the hesperidin is 283nm, and the detection wavelengths of the other three components are 330nm. Test results show that the contents of the four active ingredients in the Xinhui pericarpium citri reticulatae are high, the content of methyl 2-methylaminobenzoate is not lower than 0.020%, the ratio of the total amount of nobiletin and tangeretin to hesperidin is not lower than 0.17, and related indexes of the pericarpium citri reticulatae are remarkably low. The method is efficient, accurate, stable and reliable, and provides technical support for standardizing market circulation, guaranteeing product quality and promoting standardized development of the Xinhui pericarpium citri reticulatae industry.

The utility model discloses an automobile torsion bar strength simple detection device comprising a pedestal, two parallel guide rails are arranged on the pedestal, one end of each guide rail is provided with a slide block, the other end of each guide rail is provided with a fixed block, a rotating shaft parallel to the guide rails in the fixed block is communicated with two sides of the fixed block, and one end of the front end of the rotating shaft located at the inner side of the fixed block is provided with a rotating disc. A mounting groove is formed in the axis position of the other side of the rotary disc, a mounting block is arranged in the mounting groove, and a fixing groove is formed in the mounting block. The beneficial effects of the utility model are that the utility model provides a simple and convenient automobile torsion bar strength detection device, through adopting a simple, convenient and rapid detection technology, the time of torsion bar strength detection is greatly shortened, compared with a traditional manual loading experiment, the novel device can realize timely and rapid detection, the detection period is reduced, and the detection efficiency is improved. The production efficiency is improved, and the rapid production line detection requirement is met.

The invention discloses a biosensor based on an ultraviolet light triggered bio-barcode release technology (OBCA) and construction and application of the biosensor. The biosensor comprises nucleic acid functionalized silver nanoparticles, nucleic acid functionalized magnetic beads and a CRISPR (clustered regularly interspaced short palindromic repeats) / Cas12a detection system, the DNA bar code modified on the surface of the silver nanoparticle contains a light cleavable linker, a CRISPR / Cas12a activation sequence and a target capture sequence I, and a DNA capture probe containing a target capture sequence II is fixed on the surface of the magnetic bead through biotin-streptavidin action. During detection, target miRNA mediates two capture sequences to form a sandwich compound, after magnetic separation and thermal denaturation elution, 365nm ultraviolet radiation releases DNA bar code fragments, and the Cas12a trans-cleavage fluorescence quenching reporter probe is activated to generate a signal. According to the method, nucleic acid amplification and reverse transcription are not needed, the detection limits of miR-21, miR-155 and mi-210 respectively reach 158.94 aM, 763.56 aM and 197.82 aM, single-base mismatch and precursor miRNA can be distinguished, the serum sample detection result is highly consistent with that of RT-PCR, and the method is suitable for high-sensitivity quantitative detection of miRNA.

The utility model relates to the technical field of photovoltaic detection, in particular to a continuous displacement detection device for a photovoltaic module. According to the technical scheme, the device comprises a main machine shell frame assembly and a main machine vertical support assembly fixedly arranged on the outer side of the main machine shell frame assembly; a bottom rail beam is arranged on the lower portion of the front face of the main machine shell frame assembly, and side sliding rails are arranged at the side ends and make contact with the bottom rail beam. Transverse shaft supporting angle aluminum is arranged on the front face of the transverse shaft side supporting piece, and a transverse shaft rack and a transverse shaft guide rail are arranged at the upper end of the transverse shaft supporting angle aluminum. According to the utility model, dynamic transverse continuous detection of the photovoltaic panel is realized, different areas of the photovoltaic panel can be rapidly covered, comprehensive detection data can be obtained, the detection period is greatly shortened, convenience is provided for longitudinal dynamic test of the photovoltaic module, detection dimensions are enriched, and efficient and accurate development of detection work is guaranteed in all directions.

The invention relates to the technical field of battery manufacturing, and particularly discloses a gluing quality detection method and system. The gluing quality detection method comprises the following steps: driving a camera to return along the original path of a gluing track by using a robot which finishes gluing to carry out segmented shooting on the gluing track of a workpiece, so as to obtain a plurality of glue line images; performing parallel processing on the plurality of glue line images to obtain a plurality of colloid regions and obtain colloid boundary contours in the colloid regions; calculating a glue width mean value, a glue width standard deviation or a glue spacing mean value of the gluing track according to the glue boundary contours in the plurality of glue areas; and according to the glue width mean value, the glue width standard deviation or the glue spacing mean value, the gluing track quality is judged. The gluing robot is used for driving the camera to return along the gluing track along the original path for shooting, the camera moves along the whole gluing path and collects images through the track synchronous flying shooting technology, and the problem of detection blind areas caused by view limitation of large-size workpieces is fundamentally solved.

This utility model relates to the field of durability testing technology, specifically a solid-state drive (SSD) insertion / removal durability testing fixture. It includes a test base, a feeding mechanism, a gripping mechanism, and an insertion / removal mechanism. The feeding mechanism is mounted on the surface of the test base and includes a conveyor frame, a conveyor belt, and a conveyor motor. It can quickly and accurately align the gripping claw with the SSD under test, and the gripping force can be naturally adjusted according to the spring compression. This avoids damage to the SSD casing caused by rigid gripping while ensuring effective clamping of the SSD. The pawl, under the elastic force of the second spring, continuously engages with the ratchet tooth groove, forming a one-way locking structure. This completely restricts gear reversal, thereby locking the position of the pressure plate and ensuring that the gripping claw maintains a stable clamping force. Even if the electric telescopic rod experiences slight extension or contraction, or if the equipment vibrates during operation, it will not loosen, providing absolutely stable gripping assurance for subsequent lifting, conveying, and other processes.

The present application relates to the technical field of gene mutation detection, and particularly relates to a system, method and application for detecting exon skipping mutation.The present application constructs a self-catalytic system based on specific double recognition induction of CRISPR-Cas12a, which is used for sensitive and reliable detection of MET 14 exon skipping mutation of lung cancer patients.The system can effectively release the fluorescence signal through the Cas12a auxiliary cutting, and further realize signal amplification through the self-catalytic mechanism.The present application can solve the technical problems of the existing exon skipping mutation detection system, such as complex detection process, long time consumption, and unsatisfactory detection accuracy.The detection system of the present application has high sensitivity, stability and good reproducibility, and the method has low cost, simple operation, short detection period, good specificity, and low false positive rate and false negative rate.The present application is suitable for clinical sample determination and has an ideal application prospect.

This invention discloses a method for rapidly detecting conventional and hybrid varieties of industrial chili peppers and its application, relating to the field of molecular breeding technology. The method includes: extracting DNA from fresh leaves of the industrial chili pepper to be tested and performing whole-genome resequencing at a sequencing depth of 8×–12×; aligning the sequencing data to the chili pepper reference genome (Capsicum chinense cv. 'PBC932') to screen for high-quality heterozygous SNP loci; using a 1 Mb sliding window to statistically analyze the distribution density of heterozygous SNPs across the entire genome; and determining the variety type based on density thresholds: an average density <300 SNPs / Mb indicates a conventional variety, and >2000 SNPs / Mb indicates a hybrid variety. This invention eliminates the need for phenotypic observation in subsequent generations, requiring only leaves from current-generation plants to rapidly and accurately distinguish conventional and hybrid varieties at the molecular level. It features a short detection cycle, objective and reliable results, and is not limited by the number of molecular markers, providing strong technical support for efficient identification and early screening of industrial chili pepper germplasm resources.

The invention discloses a tobacco shred width online sampling detection device and a detection method, and aims to solve the problems of low detection efficiency, insufficient real-time performance, high tobacco shred clustering lap joint rate, transparent pressing plate pollution and the like in the prior art. According to the technical scheme, the tobacco shred width online sampling detection device is arranged on a tobacco shred conveying line, the core of the tobacco shred width online sampling detection device comprises a material receiving and conveying mechanism, a material scattering device of a vibration scattering device, a tobacco shred flattening and conveying mechanism and a visual detection mechanism; the vibration shaking device is used for loosening and raking the clustered and lapped tobacco shreds, so that the lapping rate and the agglomeration rate are reduced, full preparation is made for flattening the tobacco shreds, and the single tobacco shred rate is increased. According to the detection method, detection is completed through differential conveying and primary spreading, four-layer progressive vibration material scattering, conveying, clamping and flattening and visual acquisition of high-flattening-rate tobacco shred images. According to the scheme, the uniformity of tobacco shred bulk materials is greatly improved, the clustering lap joint rate is reduced, pressing plate pollution is avoided, real-time online detection is achieved, the detection efficiency and continuity are improved, the detection efficiency is improved, and guarantee is provided for stable cigarette quality.

The invention relates to the technical field of building material detection, in particular to a method and a device for detecting the vapor permeability of a waterproof vapor-permeable film. The method comprises the following steps: acquiring sample parameters of a waterproof vapor-permeable membrane to be detected and geometric dimensions of a test cavity of the waterproof vapor-permeable membrane; inputting the sample parameters into a preset neural network model to obtain first vapor permeation resistance; constructing a geometric model of the test cavity based on the geometric dimension of the test cavity; based on the geometric model and a preset analogue simulation equation set, constructing a simulation test model of the waterproof vapor-permeable membrane; carrying out analogue simulation by utilizing the simulation test model to obtain second steam permeation resistance; determining a third vapor permeation resistance based on the first vapor permeation resistance and the second vapor permeation resistance; wherein the third vapor permeation resistor is used for representing the vapor permeation performance of the waterproof vapor permeation film. Therefore, on the premise that the detection time is shortened, the detection precision of the vapor permeability of the waterproof vapor-permeable film can be improved.

This invention provides an electroencephalogram (EEG) signal detection device, relating to the field of medical device technology. It includes an electrode carrier and electrodes. The electrode carrier comprises a push rod, several electrode placement stages, several imaging markers, and a mesh framework. The push rod is connected to the mesh framework and is used to push the mesh framework. The electrode placement stages and imaging markers are both disposed on the mesh framework. The electrodes include electrode sheets and signal lines connected to the electrode sheets. The electrode sheets are connected to the electrode placement stages, and the signal lines extend from the inside of the mesh framework towards the push rod. The electrode carrier and electrodes are delivered to the target blood vessel via the internal jugular vein. The electrodes capture the electrophysiological signals of brain neurons. Each electrode uses an independent signal transmission line, and each transmission line is individually insulated, preventing mutual conduction and interference. It is unaffected by various external environmental factors, significantly improving the accuracy of capturing the electrophysiological signals of brain neurons, reducing the workload of doctors, and increasing detection efficiency.

The utility model discloses a kind of equipment for seaweed quality detection, a kind of equipment for seaweed quality detection, including lye prestorage tank, seaweed processing tank body, lye recovery tank;Wherein, lye prestorage tank is communicated with seaweed processing tank body by lye pipeline;Seaweed processing tank is communicated with lye recovery tank.The beneficial effect of the utility model is: compared with conventional seaweed detection method, conventional seaweed detection method can only handle 1 batch of seaweed at a time, each batch of seaweed is detected separately, and artificial efficiency is low.New seaweed detection equipment and method can handle 16 batches of seaweed at a time, greatly improve artificial efficiency.

The application provides a valve nozzle detection assembly, relates to the technical field of valve nozzle air leakage detection, and comprises a preliminary detection closed container, a pressure source and a detector. The preliminary detection closed container comprises a preliminary detection mounting plate and a preliminary detection pressure chamber. The preliminary detection mounting plate is uniformly provided with a plurality of preliminary detection mounting holes for mounting valve nozzles, a preliminary detection connecting hole for connecting the pressure source, and a preliminary detection detection hole for mounting the detector. One end of the preliminary detection pressure chamber is sealed, and the other end is provided with a sealing opening for connecting the preliminary detection mounting plate. A sealing element is arranged between the sealing opening and the preliminary detection mounting plate. The pressure source is used for pressurizing the inside of the preliminary detection closed container through the preliminary detection connecting hole. The detector is used for detecting the pressure change in the inside of the preliminary detection closed container through the preliminary detection detection hole. The application can detect a plurality of valve nozzles at a time, improves the detection efficiency, simulates the actual working environment of the valve nozzle, and the detection result is accurate.

This utility model discloses an instrument for detecting high-strength bolts in wind turbine generator sets using a phased array detector. The instrument includes a main body, a base, a cover, a locking structure, and a drive component. The base has an upwardly inclined opening, and the cover is hinged to the base, allowing it to cover or open the opening. The locking structure includes an unlocking drive unit and a locking latching unit. The locking latching unit is fixed to both sides of the opening in the base, and the unlocking drive unit is rotatably connected to the cover. When the cover covers the opening, the two latch and lock. One end of the drive component is hinged inside the base, and the other end is hinged to the cover. After unlocking, it provides a force away from the opening to the cover, achieving automatic opening. This design allows the cover to protect the internal structure when the instrument is stored, and eliminates the need for complete removal during use. The operator can easily unlock the cover, which opens automatically, facilitating testing, saving time, improving efficiency, and preventing accidental opening of the cover during transportation and storage, thus protecting the instrument and improving its safety and lifespan.

The utility model belongs to the technical field of measuring equipment relates to a kind of automobile VVT phase ware rotor oil hole's pneumatic detection device.The utility model, including platform and chassis, the platform and chassis are fixed between by several struts, the waist line groove of five groups along the center point of chassis annular array distribution is opened in the chassis.The utility model is detected, and one face two hole positioning structure is formed to automobile VVT phase ware rotor by one face two hole positioning, so that automobile VVT phase ware rotor ensures correct position, waist line groove is used to adjust the angle and position of base plate, so that rotor oil hole detection component is in correct position and angle, the thickness of the height of the grinding height piece can make rotor oil hole detection component be in correct height, each rotor oil hole detection component is independently controlled, and all oil holes can be detected simultaneously, and detection cycle is shortened by more than 50% than mechanical gauge.

The application discloses a kind of based on feature fusion's power grid equipment source code compatible adaptation detection method and device, method includes: obtaining the source code of power grid equipment and its dependent library, abstracts the structure of source code as code graph, dependent information is parsed as package-version graph, and the cross-domain connection edge of two is constructed to carry out topological alignment;Using graph neural network, the node in code-package-version graph is embedded, capture the information of node and its neighbor, and carry out graph simplification;Global self-attention mechanism and convolutional neural network are used for feature extraction, and a classifier is used for classification;Training is carried out on the dataset containing compatible sample and incompatible sample, load the model parameter of training, and the compatible adaptation of target source code and its dependent library is detected, and the label of compatible or incompatible is output.The application can efficiently and accurately detect the compatible adaptation of power grid equipment source code, discover potential compatibility problems in advance, and improve the stability and maintainability of the system.

This invention relates to the technical field of magnetic testing and analysis of boiler water-cooled tube sidewalls, specifically providing a boiler water-cooled tube sidewall inspection device. The device includes a housing assembly, a magnetic module, an image acquisition module, a magnetic powder circulation mechanism, and a drive mechanism. The magnetic powder circulation mechanism includes an upper pulley, a lower pulley, and a rear guide pulley, each mounted on a wire-threading tube. An annular magnetic tape is mounted on the outer side, and the tape circulates. An internal upper powder-removing mechanism is located inside, and a lower front powder-applying mechanism is located at the bottom. The bottom of the powder-removing mechanism and the top of the powder-applying mechanism are connected by a powder-guiding tube. The upper part of the annular magnetic tape passes through the powder-removing mechanism for powder removal, and the front part of the tape adheres to the front of the powder-applying mechanism for powder application. The image acquisition module faces the inner surface of the annular magnetic tape. This invention can adaptively adjust the machine's movement speed, quickly inspecting non-critical areas and repeatedly testing at low speeds in critical areas, improving work efficiency and inspection accuracy.

This utility model discloses a surface defect detection device for rubber roller production, comprising a feeding assembly, a rotary drive assembly, a discharging assembly, and a vision inspection assembly. The feeding assembly includes a feed plate for the rubber rollers to be inspected, a feed lifting ramp, and a lifting assembly for orderly conveying the rubber rollers to be inspected. The rotary drive assembly includes an active drive shaft for roller rotation, a passive drive shaft for roller rotation, a roller rotation drive motor, and a drive shaft mounting bracket to ensure stable rotation of the rubber rollers. The discharging assembly includes a discharge lifting ramp and a collection trough for collecting the inspected rubber rollers. The vision inspection assembly includes a translational drive rail and a surface defect detection camera to achieve omnidirectional scanning of surface defects on the rubber rollers. This equipment has a high degree of automation, accurate detection, effectively improves the quality control level of rubber roller production, and ensures the surface quality of the rubber rollers.

The invention discloses an insulator discharge defect detection device, and relates to the technical field of insulator discharge defect detection devices, the insulator discharge defect detection device comprises an operation table, and also comprises a rotating disc which is rotatably arranged on the operation table, a plurality of groups of mounting assemblies are arranged on the circumference of the rotating disc, each mounting assembly is provided with a clamping assembly, and the clamping assemblies are arranged on the rotating disc; the clamping device is used for clamping an insulator on the turntable; the device comprises a rotating disc, a feeding station and a testing station, insulators are clamped on the rotating disc one by one on the feeding station, then the rotating disc rotates at intervals, and the insulators are rotated to the testing station one by one for discharging detection; three functions of surface bulge defect detection, internal defect discharge detection and umbrella skirt cleaning are integrated, the rubber plate and the position sensor are matched to realize surface bulge accurate judgment and test station discharge detection to troubleshoot internal bubbles / cracks, and meanwhile, the rubber plate rotates to clean umbrella skirt foreign matters, so that the foreign matters are prevented from interfering with discharge detection, and the detection efficiency is improved. And the detection integrity of the insulator is comprehensively ensured.

This application discloses a PCB board testing mechanism, relating to the field of PCB board testing technology. It includes a main body, a slider, and a through-hole. The main body has a placement groove on its upper side. Two sets of uprights arranged symmetrically around the center are fixedly connected to the upper diagonal of the main body. A lifting groove is formed on the inner side of each upright. The slider is slidably connected to the inner side of the lifting groove. A pressing mechanism is installed on the outside of the uprights, and a detection mechanism is installed on the outside of the slider. The through-hole is located on the upper side of the placement groove, and a heating mechanism is installed inside the main body. In a single operation, this device accurately measures the PCB thickness by pressing down with a pressure block, while simultaneously using hot air heating and real-time monitoring of pressure changes to directly determine its thermal expansion trend, achieving efficient and simultaneous detection of thickness and thermal expansion performance.

The application discloses a multiplex fluorescent quantitative PCR detection method and a multiplex fluorescent quantitative PCR detection kit capable of simultaneously detecting three kinds of microorganisms, wherein the primer pair and probe combination comprises a specific primer pair and a specific probe for escherichia coli, a specific primer pair and a specific probe for pasteurella multocida, and a specific primer pair and a specific probe for clostridium perfringens. The application can simultaneously detect escherichia coli, pasteurella multocida and clostridium perfringens in a single tube, greatly shortens the detection period and reduces the detection cost; the primer probe has excellent compatibility, is simple to operate, and is suitable for multiple scene applications such as clinical diagnosis and treatment and epidemiological investigation.

The invention discloses a rapid detection method for echinococcus granulosus based on RPA-CRISPR / Cas, and belongs to the technical field of molecular diagnosis. The method comprises the following steps: extracting DNA of a sample to be detected; the specific primers are used for RPA isothermal amplification, a reaction system contains a buffer solution, upstream and downstream primers, RPA enzyme, magnesium acetate and template DNA, and reaction is carried out at 39 DEG C for 20 minutes; and mixing the amplification product with LbCas12a protein, sgRNA and a fluorescence report probe, carrying out CRISPR / Cas reaction at 37 DEG C for 30 minutes, and judging the result through a real-time fluorescence signal. Constant-temperature rapid amplification is achieved through RPA, high-sensitivity and high-specificity detection of the echinococcus granulosus can be achieved under the site condition by combining high-specificity recognition and trans-cleavage activity of CRISPR / Cas12a, the sensitivity reaches the single-site copy number, operation is easy and convenient, complex temperature control equipment is not needed, and the method is suitable for primary medical treatment and site quarantine.

This invention discloses a sample holder for semiconductor material testing, comprising a sample holder body with a back crossbeam; a cover plate disposed within the sample holder body; a sample holder interface fixedly connected to one side of the sample holder body by connecting bolts; and a set screw threadedly connected to the sample holder body, with the cover plate fixed within the sample holder body by the set screw. This semiconductor material testing sample holder allows for the placement of more samples at a time, reducing sample replacement frequency and shortening the testing cycle. It is particularly suitable for testing scenarios involving multiple batches and specifications of samples, reducing the workload of testing personnel. It ensures testing accuracy: the sample is fixed stably and without displacement, avoiding deviations in testing data caused by sample loosening, improving the accuracy and reliability of testing results, and providing precise data support for experimental analysis.

This invention discloses a hole diameter detection system and method for circuit boards, relating to the field of small hole detection on circuit boards. It includes a three-degree-of-freedom conveying mechanism and a detection worktable. The detection worktable is arranged within the working range of the three-degree-of-freedom conveying mechanism. A small diameter detection component is installed on the detection worktable, comprising a high-precision detection cone and a high-precision distance sensor. The high-precision detection cone is vertically mounted on the top surface of the detection worktable and is formed by a frustum of a cone, with its small-diameter end positioned away from the detection worktable. The high-precision distance sensor is mounted on the top surface of the detection worktable, with its detection path vertically upwards. A horizontal feeding mechanism is installed on the three-degree-of-freedom conveying mechanism. Utilizing the linear axial change in the diameter of the high-precision detection cone, combined with the high-precision distance sensor for accurate detection of the circuit board height, the inner diameter can be directly calculated from the contact position of the small hole on the cone.

The utility model discloses performance detection and comparison equipment for a hollow fiber hemodialysis membrane. The performance detection and comparison equipment comprises a supply unit, a conveying unit and a dialyzer, the supply unit comprises dialysate and a simulated plasma source; the conveying unit integrates a simulation main pipeline, a dialysis main pipeline, a simulation branch pipeline, a dialysis branch pipeline, a simulation liquid return pipeline, a dialysis liquid return pipeline, a simulation sampling pipeline and a dialysis sampling pipeline. The simulation main pipeline is connected with the simulation plasma source and the simulation branch pipeline, the simulation branch pipeline is respectively connected to the blood chamber inlet of each dialyzer, and the matched simulation liquid return pipeline and the simulation sampling pipeline are respectively connected with the blood chamber outlet and the liquid return path; the dialysis main pipeline is connected with dialysate and a dialysis branch pipeline, the dialysis branch pipeline is connected to a dialysate inlet of the dialyzer, and the dialysis liquid return pipeline and the dialysis sampling pipeline are correspondingly connected with an outlet and a liquid return path. According to the equipment, performance detection can be synchronously carried out on a plurality of dialyzers through a plurality of groups of parallel branch pipelines and sampling pipelines, so that the detection efficiency is improved, the detection period is shortened, and a batch comparison detection function is realized.

The invention provides a self-adaptive ultrasonic detection and defect identification method for a composite material, and belongs to the technical field of ultrasonic detection.The self-adaptive ultrasonic detection and defect identification method for the composite material comprises the specific steps that firstly, preparation is conducted before detection; 2, collecting full-matrix data of the one-way plate; 3, calculating a core elastic constant of the composite board; 4, deducing the velocity distribution of each layer group of the composite board; 5, collecting full-matrix data of the composite board; step 6, adaptively correcting imaging delay; and 7, performing full-focusing imaging and judgment on the defects of the composite board. According to the method, defect subtle features which are difficult to recognize by human eyes in the full-focus imaging picture can be automatically mined through the deep learning model, the problems of missing detection and false detection caused by subjective judgment deviation are effectively avoided, rapid and accurate classification and positioning of various defects can be realized through the deep learning model, the detection period is greatly shortened, and the detection efficiency is improved. And reliable technical support is provided for high efficiency and precision of ultrasonic detection of the composite material.

This invention discloses a SNP molecular marker associated with mung bean resistance to the bean weevil and its application in genetic breeding. The problem this invention aims to solve is how to identify mung bean resistance to the bean weevil. The SNP molecular marker is a locus (SNP site) on mung bean chromosome 4, with a nucleotide type of T or C, located at nucleotide position 164 of sequence 3 in the sequence listing. This invention provides the application of substances for detecting polymorphisms or genotypes of SNP sites in the mung bean genome in identifying or assisting in the identification of mung bean resistance to the bean weevil. This invention can be used to assist in the identification of mung bean resistance to the bean weevil, for early screening of mung beans, and for marker-assisted breeding of mung beans.

This invention discloses a multi-frequency detection method for the ground capacitance of a substation DC system based on a frequency converter bridge. According to the frequency characteristics of the ground capacitance of the substation DC system, a multi-frequency detection signal S containing n different frequency components is generated. nf ; using a frequency of f c carrier S c The above multi-frequency detection signal S containing n different frequency components nf Modulated into a pair of positive inverter bridge switch control signals S in complementary high and low level states + and the control signal S of the negative frequency converter bridge switch tube ‑ ; control signal S of the positive frequency conversion bridge switch tube + and negative frequency conversion bridge switch control signal S ‑ The positive switch S1 and the negative switch S2 are injected separately to achieve independent control of each switch; the capacitance to ground is calculated based on the acquired and detected signals; this invention achieves high-precision and reliable detection of the capacitance to ground of the DC system in substations, avoiding the problem of misjudgment of the capacitance to ground of long cables in the current DC system of substations during insulation testing.