31results about How to "Clear features" patented technology

The invention discloses a vibration table test device and a test method for seismic dynamic response of a fault-crossing mountain tunnel. The test device comprises an earthquake simulation vibration table, a laminated shear model box, surrounding rock, a fault fracture zone, a tunnel model and a monitoring and measuring system. Wherein the earthquake simulation vibration table inputs earthquake waves and provides earthquake power; the bottom of the laminated shear model box is fixed on the earthquake simulation vibration table, and the laminated shear model box is filled with surrounding rocks and fault fracture zones; the fault dip angle is 90 degrees, and left and right surrounding rock elevations are inconsistent; the tunnel model comprises a non-shock-absorption layer and a shock-absorption layer which are buried in the surrounding rock in the model box in parallel and perpendicularly intersect with a fault fracture zone. The monitoring and measuring system is used for measuring tunnel acceleration and strain, surrounding rock acceleration, fault acceleration and the like in the seismic oscillation process. The test device can simulate the dynamic response process of the fault-crossing mountain tunnel under the action of an earthquake, and time evolution and spatial distribution characteristics of tunnel earthquake response are determined.

The invention discloses an image reconstruction algorithm, an image processing method and device, a vehicle and a storage medium. The image processing method comprises the steps of obtaining a visible light image and an auxiliary modal image to be fused; and performing fusion reconstruction on the visible light image and the auxiliary modal image by using an image reconstruction algorithm to obtain a target image, the image reconstruction algorithm comprising a step of completing a feature extraction task of the associated visible light image by using a high-frequency attention mechanism and a Fourier convolution mechanism in the high-frequency attention block. Therefore, the high-frequency information in the visible light image with various image qualities can be rapidly and effectively extracted through the image reconstruction algorithm, so that the target image is obtained by fusing and reconstructing the visible light image and the auxiliary modal image based on the effectively extracted high-frequency information; and features in a visible light image and features in an auxiliary modal image are clearer. Therefore, it can be ensured that images with high quality can be obtained when shooting is carried out in various shooting environments.

The invention discloses a new energy automobile power battery thermal runaway wreckage extraction and cause judgment method. The method mainly comprises a survey sampling step, a wreckage extraction step, a wreckage current collector structure analysis step, a wreckage material powder crystal form structure analysis step and a material carbon component analysis step. According to the method, new energy automobile fire accident field investigation and laboratory analysis and detection technologies are systematically combined together, technical support is provided for analysis and detection of power battery wreckage in fire accident investigation, and an existing new energy automobile fire accident investigation system is effectively improved; and related accident investigators can conveniently carry out new energy automobile fire accident investigation and effective judgment of accident causes.

The invention relates to a satellite short-term clock error forecasting method fusing time sequence decomposition and deep learning, and belongs to the technical field of satellite clock error forecasting. The method comprises the steps of performing primary difference processing on a satellite historical clock error sequence, screening out abnormal values existing in data according to a Raida criterion, performing time sequence decomposition on clock error primary difference data, firstly, decomposing the clock error primary difference sequence by adopting an adaptive noise complete set empirical mode decomposition algorithm to obtain a plurality of mode components, and performing time sequence decomposition on the plurality of mode components; a permutation entropy algorithm is introduced to sort modal components, and a t check algorithm is used to classify random items and periodic items of the components and reconstruct the components into trend items, periodic items and random items. And inputting the reconstruction item into a Transform model in a channel independent mode for training, and obtaining the clock error required to be forecasted after inverse primary difference processing and superposition of component prediction results. According to the method, the precision and the stability of satellite short-term clock correction forecasting are improved, and meanwhile, the interpretability of a forecasting result is also improved.

The invention relates to the technical field of automatic welding of metal furniture, and discloses an automatic welding method for metal furniture. The cutting side faces are flexibly selected to meet different machining requirements, the design flexibility is enhanced, and the machining efficiency and accuracy are improved. A reference side face is set to ensure accurate cutting, errors are reduced, and a solid foundation is laid for welding assembly. Intersected edges are accurately compared, cutting points are positioned, it is ensured that the cutting shape conforms to design, and structural stability is improved. The vertex position is defined, the cutting boundary is defined, a clear cutting path is formed, and the cutting accuracy is improved. The sections of the pipes are spliced and welded after cutting, so that strong connection is realized, and the structural integrity and bearing capacity are enhanced. Tangent plane coincidence is ensured, the welding quality is improved, and the connection firmness is enhanced. And measuring and adjusting after welding to ensure that the product quality reaches the standard. The process not only improves the production efficiency, but also ensures the accuracy, stability and high quality of the product.

Embodiments of the present disclosure relate to supporting large field of view waveguides for red, green, and blue on a single panel. An optical device for combining RGB light signals in a single waveguide. The device includes a plurality of DOEs. A first DOE is configured to receive a light signal at an input propagation angle and diffract the light signal based on a spectrum such that light of one spectrum is primarily diffracted in a first direction and path and light of a second spectrum is primarily diffracted in a second, different direction and path. The first DOE is configured to diffract the light into a second DOE. The second DOE is configured to diffract the light into a third DOE. The third DOE is configured to diffract the light into an eyebox that maintains an output propagation angle substantially parallel to the input propagation angle. A sum of grating vectors for each path is substantially equal to zero.

The present invention provides a method for three-dimensional dynamic imaging of fluid based on multi-channel OPT and neural network, comprising the following steps: using laser to provide illumination, emitting laser to biological samples, the biological samples will scatter light and form sample images, continuously collecting sample images of n angles of the biological samples, and obtaining a number of original data graphs; using neural networks to train the collected sample images with spatiotemporal characteristics to obtain a network model; using the network model to predict the original image; obtaining a two-dimensional sample feature distribution map, and using OPT technology to reconstruct three-dimensional images of these two-dimensional sample feature distribution maps to obtain dynamic three-dimensional images. The present invention also provides an imaging device. The present invention improves the accuracy of image feature recognition, has good imaging quality, and can quickly obtain three-dimensional dynamic images.

The invention provides an adhesive defect identification method based on an MCED-YOLOv7 network, and the method comprises the steps: obtaining a to-be-identified image, and carrying out the data image processing through the linear interpolation; carrying out image feature processing by adopting an exponential amplitude limiting gain algorithm; based on a YOLOv7 architecture, an MLCA attention mechanism is introduced behind an ELAN module, and a CBAM attention mechanism is added to the convolution of an SPPCSPC module; an original CIOU is improved into an EIOU, a DYHEAD target detection head is added, and an MCED-YOLOv7 detection network is constructed and used for carrying out defect identification on an image to be identified. According to the invention, accurate detection of a normal adhesive, top void and base void in the insulation board can be realized, the accuracy and robustness of the detection network are improved, and the phenomena of false detection and excessive detection are significantly improved.

The invention discloses an electric heating catalytic converter evaluation method and system, a readable storage medium and a vehicle, and the method comprises the steps: building a catalytic converter framework, connecting a heat flow test bench, and sequentially setting a first temperature monitoring region, a second temperature monitoring region and a third temperature monitoring region on the catalytic converter framework in a segmented manner; respectively carrying out static air temperature rise performance test, flow temperature rise performance test and assembly temperature rise performance test on the catalyst architecture, and obtaining test data; and comparing information based on the test data and a preset standard value to obtain a performance evaluation result and an application scheme. According to the method, an engine stand and calibration are not needed, and the heating performance of the active energy control electric heating catalyst and the temperature rise performance of the selective reduction catalyst are mainly evaluated through the simulation of a heat flow stand; therefore, the performance of the active energy control electric heating catalytic converter, the contribution to tail gas emission and the influence on the whole vehicle battery framework can be accurately evaluated through the method and the device.

The invention discloses a visible light image-based coal rock identification method in a coal mining process. The method comprises the following steps: acquiring an original image of coal rock; preprocessing the original image to obtain a preprocessed image; performing image enhancement on the preprocessed image to generate an enhanced image; labeling the enhanced image, and dividing the image into a training set, a verification set and a test set; a YOLO v5 model is used as a basic model for training; and obtaining a final recognition model, performing coal rock image detection, and outputting a result. According to the method, through comprehensive application of image preprocessing, labeling, enhancement and deep learning technologies, high-precision and high-efficiency coal rock recognition in a complex coal mine environment is realized, the defects of the current technology in the aspects of precision, efficiency and robustness are effectively overcome, and the method has important practical application value.

A light emitting diode includes a support substrate, a first conductive type semiconductor layer, an upper insulating layer on the first conductive type semiconductor layer, a mesa including an active layer and a second conductive type semiconductor layer and located below a portion of the first conductive type semiconductor layer to expose an edge of the first conductive type semiconductor layer, the mesa including a second through hole exposing the first conductive type semiconductor layer, a first electrode including a first contact portion electrically connected to the first conductive type semiconductor layer through the first through hole and a second contact portion electrically connected to the first conductive type semiconductor layer through the second through hole, a second electrode electrically connected to the second conductive type semiconductor layer, and at least one upper electrode pad connected to the second electrode, the first through hole being disposed in an area surrounded by the edge of the mesa, a portion of each second through hole being surrounded by the active layer and the second conductive type semiconductor layer and disposed along the edge of the mesa, and the upper insulating layer including a plurality of material layers.

The invention relates to the field of charging station fault diagnosis, and discloses a non-intrusive charging station fault diagnosis method, system and device, and a storage medium, and the method comprises the steps: setting different working frequencies for each DC / DC module in multi-path parallel connection at a rear stage; the method comprises the following steps: collecting current signals of each DC / DC module with different working frequencies at a direct current power pool part at the joint of the output end of an AC / DC module and the input end of a post-stage multi-path parallel DC / DC module; performing frequency component and characteristic analysis processing on the current signal to form signals with different frequency components; performing fault feature extraction on the signals with the different frequency components; and performing model training based on the fault features to form a charging station fault diagnosis model, and performing charging station fault diagnosis through the charging station fault diagnosis model. The DC / DC converters under different working frequencies are adopted in the post-stage circuit, different working states reflect different characteristics, and the characteristics of clear characteristics and high resolution are achieved.

The invention provides a design method of a thrust ring at the tail end of an embedded pressure steel pipe of a hydropower station. The method comprises the following steps: determining a design object; establishing a water thrust transfer model; whether the thrust ring needs to be arranged on the downstream section of the pressure steel pipe or not is judged; design parameters of a thrust ring and design parameters of backfill concrete are drawn up; judging whether the bearing capacities of the thrust ring, the thrust ring root pressure steel pipe and the thrust ring root welding seam meet requirements or not; judging whether the local compression bearing capacity and the punching bearing capacity of the backfill concrete meet the requirements or not; judging whether the overall anti-sliding stability between the backfill concrete and the surrounding rock meets the requirement or not; and judging whether the bearing capacity of the surrounding rock meets requirements. Supporting is provided for the design of the thrust ring, the stress characteristics and interaction of all elements are clearer and more specific, mechanical characteristics and engineering practice are met, and the safety of the hydropower station pressure steel pipe and a plant is better guaranteed.

The present invention provides a load driving device with high stability (linearity) and a control method thereof. In the load driving device in which multiple inductive loads are connected in parallel, even if a reverse current is temporarily detected in a specific inductive load, the load driving device can continue to operate normally without stopping.

Provided is an elevator door device capable of reducing the space occupied on a car for adjusting the tension of a transmission belt. The elevator door device includes: a motor (17) for opening and closing a car door; a first pulley (19) that rotates with the driving of the motor (17); a transmission belt (20) wound around the first pulley (19) and a second pulley; and a transmission belt tension adjustment mechanism (29) for adjusting the tension of the transmission belt (20). The transmission belt tension adjustment mechanism (29) is configured to be capable of adjusting the tension of the transmission belt (20) by moving the position of the motor (17) in the vertical direction.

The present application is suitable for the technical field of building energy consumption analysis, and provides a building energy consumption dynamic response analysis method and system under meteorological evolution, which comprises the following steps: integrating a multi-source meteorological data set and constructing a building energy consumption reference model; generating sample combinations of uncertain parameters by using a sampling method, running the building energy consumption reference model, obtaining energy consumption output results under different climate scenarios, and statistically analyzing the energy consumption output results; based on the energy consumption output results, using a global sensitivity analysis method to analyze the contribution of each uncertain parameter to the energy consumption, and identifying key driving parameters; based on the sample set generated in the uncertainty analysis step, using a machine learning algorithm to train a building energy consumption prediction model, and outputting building energy consumption prediction results for target meteorological conditions. The present application solves the problem that the traditional method is inaccurate in evaluating under non-stationary climate, and can provide quantitative and robust decision support for climate-adaptive building design and energy-saving strategy formulation.

A safe driving assistance system is mounted on a vehicle provided with an automobile data recorder. A safe driving assistance system includes a control device and a notification device. The control device executes the following steps: acquiring an image shot by the automobile data recorder; detecting a surrounding vehicle reflected in the acquired image; determining whether a driver identifier is displayed on the detected surrounding vehicle; and outputting a warning signal when the peripheral vehicle on which the driver identifier is displayed is detected. Upon receiving the warning signal output by the control device, the notification device notifies the driver of the presence of the surrounding vehicle on which the driver identifier is displayed.

The invention discloses an exhibition subject identifier classification method and system fusing partition color features, belongs to the technical field of image recognition, and can solve the problem of low classification precision in the prior art. The method comprises the following steps: S1, extracting a first local area corresponding to each connecting piece and a second local area corresponding to each label from a monitoring image in an exhibition hall by using a target detection model; s2, determining a first effective pixel meeting a first preset condition according to the first local area, and determining a second effective pixel meeting a second preset condition according to the second local area; the first preset condition comprises saturation greater than or equal to preset saturation, and the second preset condition comprises saturation greater than or equal to preset saturation and brightness less than or equal to preset brightness; s3, determining a combined hue of each exhibition subject identifier according to the first effective pixel and the second effective pixel; and S4, classifying all the exhibition subject identifiers according to the combined hues. The method is used for counting the number of exhibitors.

The invention discloses an N-(naphthalene-1-yl) phenazine-1-formamide hapten, an antigen, an antibody, a colloidal gold test strip and application. The hapten has a molecular structural formula as shown in a formula I, and the molecular formula and the molecular weight of the hapten are C23H16N4O, 364.41.

The present invention provides a design method for a thrust ring at the end of a buried penstock of a hydropower station, the method comprising: determining a design object; establishing a water thrust transmission model; judging whether the thrust ring needs to be set at the downstream section of the penstock; formulating design parameters of the thrust ring and design parameters of the backfill concrete; judging whether the bearing capacity of the thrust ring, the penstock at the root of the thrust ring, and the weld at the root of the thrust ring meet the requirements; judging whether the local compressive bearing capacity and the shear bearing capacity of the backfill concrete meet the requirements; judging whether the overall anti-sliding stability between the backfill concrete and the surrounding rock meets the requirements; judging whether the bearing capacity of the surrounding rock meets the requirements. The present invention provides support for the design of the thrust ring, so that the force characteristics and interactions of each element are clearer and more specific, in line with mechanical properties and engineering practice, and more secure for ensuring the safety of the penstock and plant of the hydropower station.

The present invention discloses a data traceability verification method in data element circulation, which includes: according to data equity attributes, data with equity attributes are divided into public data, enterprise data and personal data; data with equity attribute characteristics are abstractly represented as equity data elements composed of object classes, characteristics and representations; based on the equity data elements, PROV‑O and ProVOC data traceability models are integrated in combination with the data element circulation process and the data right confirmation system to obtain the PROV‑OCC data traceability model; after the W7 model is integrated with the PROV‑OCC data traceability model, semantic representation is performed to describe the circulation status and traceability status record of the equity data element in the equity data circulation instance; the traceability process in the equity data circulation instance is encoded, and the encoded ontology is reasoned and traced. The present invention realizes the automation and intelligence of equity data traceability, and improves the reliability and scalability of traceability.

The invention belongs to the technical field of biological medicine, and particularly relates to application of a biomarker or a reagent for detecting the biomarker in preparation of products for diagnosis and / or prognosis evaluation of esophageal cancer, and the biomarker comprises one or more than two of SCC, Cyfra21-1, HGF, VEGF, IL-6, IL-8 or IGFBP-1. Experiments prove that the biomarker disclosed by the invention has remarkably high sensitivity and specificity when being used for diagnosis and prognosis evaluation of esophageal cancer, and has very good application and research values in the field of biological medicines.

This invention belongs to the field of biomedical technology and discloses the application of the small molecule tripeptide Ser-Ser-Cys (SSC) in inhibiting the phenotypic transformation of vascular smooth muscle cells (VSMCs). SSC is an endogenous differentially expressed tripeptide screened and identified from the serum of hypertensive non-atherosclerotic patients using non-targeted metabolomics technology. In vitro experiments show that SSC can effectively inhibit angiotensin II (Ang II)-induced abnormal proliferation, migration, and phenotypic transformation from contractile to synthetic VSMCs. Its mechanism of action is related to the regulation of the Keap1 / Nrf2 signaling pathway, improvement of cellular oxidative stress, and mitochondrial function. This invention provides a new approach for using SSC in the preparation of drugs or functional foods for the prevention and treatment of hypertension-related vascular remodeling.

The injection system (1) comprises: a sealing gasket (100) including a top end (140) and a plurality of engaging claws (122), wherein the top end (140) has an elliptical cross-sectional shape whose length in the height direction is longer than its length in the width direction orthogonal to the height direction; a plunger (110) engaging with the sealing gasket (100); a cylinder (91) into which the sealing gasket (100) is inserted; and an injection device (2) configured to move the plunger (110) forward to inject a liquid medicine in the cylinder (91), wherein the plurality of engaging claws (122) are displaced between an expanded position and a contracted position, and include an expanded hole (H) dividing an inlet and an outlet and an inner surface (S) inclined in a direction away from a perpendicular line (P) passing through the center of the hole (H), wherein two engaging claws (122) arranged in the height direction have the same shape and size, and two engaging claws (122) arranged in the width direction have the same shape and size.

The present application is applicable to the technical field of integrated energy systems, and provides a method, device and terminal equipment for load estimation based on user portraits, the method comprising: obtaining the annual load curve and load estimation value of the target user; decomposing the annual load curve according to multiple load fluctuation frequencies to obtain multiple load fluctuation frequency characteristic components; clustering analysis of multiple load fluctuation frequency characteristic components to obtain multiple cluster center curves; obtaining a daily load characteristic curve based on multiple cluster center curves; obtaining daily loads at multiple times according to the daily load characteristic curve and load estimation value; and obtaining estimated daily loads at multiple times by Monte Carlo calculation of daily loads at multiple times. The present application determines the "user portrait" in the integrated energy system, clarifies the user load type and change characteristics, and enables the integrated energy system to be targeted in selection, sizing and optimal scheduling.

This invention discloses a large-scale model-based answer analysis and management method and system, relating to the field of answer analysis technology. The large-scale model-based answer analysis and management system includes an answer analysis module and an answer review module. This invention constructs an answer-based spoken language mapping knowledge graph and combines it with the semantic role labeling capabilities of the large-scale model to achieve a mapping from surface text to deep semantic structures. This effectively solves the problems of non-standard and colloquial expressions in subjective answers, improving the system's understanding and tolerance for non-standard expressions. By introducing construction logic deduction paths from the expert question bank, non-standard answer words are decoupled into implicit practical action features and expected process purpose features. Similarity comparison is then performed based on engineering utility, elevating the judgment of answer results from keyword matching to engineering logic consistency judgment, significantly improving the professionalism and credibility of the judgment results.

The present invention discloses a method for identifying the formation process of microbial dolomite. The present invention comprehensively applies multiple technical means to select samples, uses high-resolution scanning electron microscope, atomic force microscope-laser Raman, etc., and integrates the results of microbial culture experiments to establish indicative markers of the biogenesis of microbial dolomite. Boron isotopes are used to estimate the ancient pH value of seawater in the early Paleozoic era, and conventional carbon oxygen and strontium isotopes are used to restore ancient temperature and ancient alkalinity, and then simulate (such as: PHREEQC software) the influence and restriction of changes in seawater properties (including differences in physical and chemical conditions and different components) on dolomite precipitation, providing new ideas for solving the ancient "dolomite problem" and having exploratory theoretical significance; clarifying the characteristics of microbial dolomite, the formation environment and other properties, and also has a guiding role in the prediction of dolomite reservoirs.

A hair removal implement (or device) includes a handle body and a cartridge. The cartridge includes at least one blade and up to nine blades. The cartridge includes a comb guard having a rinse-through channel between the comb guard and the at least one blade. The cartridge includes a connection feature for slidingly or translationally attaching to a matching feature on the handle. The connection is along a length of the cartridge or normal to a central axis of the handle. One or more detents or pawls connect between the cartridge and the handle to provide a secure connection. A dispenser for cartridges includes a plurality of receptacles having one or more connection structures that releasably hold a cartridge therein.