56results about How to "Solve practicality" patented technology

The invention discloses a space-time semantic fusion virtual track classification method and system, which are used for reducing noise of a virtual track time sequence based on local dynamic sorting and improving the quality of virtual track data. Space-time semantic expressions of the virtual tracks are defined, the virtual tracks are simplified into time sequence operation and target points, and the space-time continuity of the user access process is ensured; a time sequence operation characterization model is provided to extract time sequence operation features, a ground feature color template is constructed to extract target point space attribute features, and a POI semantic space is established to extract target point semantic attribute features; and fusing time, space and semantic features by using a time sequence neural network model, capturing a time sequence dependency relationship of the virtual trajectory, and realizing accurate classification of the virtual trajectory. According to the method, a map service provider can accurately divide user groups, establish user interest portraits and develop personalized and intelligent geographic information services.

The invention provides an earth fluid effective angular momentum time sequence reconstruction method and device. The earth fluid effective angular momentum time sequence reconstruction method comprises the steps that earth fluid effective angular momentum is obtained, an original earth fluid effective angular momentum time sequence is obtained through linear interpolation, spectral analysis is conducted through fast Fourier transform, and an inherent periodic term is obtained; setting a lag window length based on an annual swing period and a Marcher swing period, performing singular value decomposition grouping and reconstruction, and obtaining a period time sequence, a trend time sequence and a residual time sequence; performing spectral analysis on the periodic time sequence, the trend time sequence and the residual time sequence obtained by decomposition through fast Fourier transform, judging whether the spectral characteristics are the same as those obtained by spectral analysis or not, and if not, continuing to decompose the periodic term; otherwise, reconstructing the earth fluid effective angular momentum time sequence. According to the method, a singular spectrum analysis scheme for setting a stable lag window is provided, signal integrity can be ensured, signal aliasing is avoided, and the extraction precision of quasi-periodic signals is improved; meanwhile, the data fusion consistency is ensured, and the earth fluid effective angular momentum reconstruction precision is improved.

The invention provides a dual-temperature refrigerating system, an air conditioning unit and a defrosting control method. The dual-temperature refrigerating system comprises a first compressor and a condenser; the low-temperature loop is provided with a low-temperature evaporator, and the low-temperature evaporator communicates with the first compressor and the condenser; the medium-temperature loop comprises an evaporator branch and a medium-temperature evaporator arranged on the evaporator branch; the medium-temperature evaporator comprises a first evaporator and a second evaporator which are connected in series, and the first evaporator and the second evaporator are arranged on the evaporator branch at an interval; and the controller is used for converting the refrigerant circulation direction between the first evaporator and the second evaporator according to the frosting condition of the first evaporator or the second evaporator so as to defrost the first evaporator or the second evaporator. According to the double-temperature refrigerating system, the technical problems that in the related technology, the cost is increased and the practicability is poor due to the fact that two independent refrigerating systems are adopted in a double-temperature-zone system are solved.

The utility model relates to the technical field of cleaning devices, and discloses a chemical storage tank cleaning device which comprises a water storage tank, a clean water tank is arranged on one side of the surface of the water storage tank, a collecting tank is arranged on one side of the water storage tank, and a supporting frame is arranged above the water storage tank and the collecting tank. By starting the motor and the water pump, under the action of the scrubbing mechanism, the interior of the storage tank can be scrubbed, meanwhile, due to the fact that the storage tank is overturned, sewage directly flows into the water storage tank from the interior of the storage tank in the scrubbing process, the situation that the sewage is left in the storage tank after cleaning, and consequently the storage tank is not cleaned in place can be prevented, and the cleaning efficiency is improved. Meanwhile, due to the fact that the clear water tank is lower than the water storage tank, sewage in the water storage tank can be guided into the filter tank, clean water returns to the interior of the clear water tank under the action of the filter tank, secondary utilization of the sewage is achieved, and the problems that an existing device is not in place in cleaning and poor in practicability are solved.

The invention provides a standard regulation management method, device and system based on vehicle models, and the method comprises the steps: determining a standard regulation list corresponding to a target vehicle model according to the mapping relation between the target vehicle model and the standard regulation; according to the type attribute information of the standard regulations in the standard regulation list and the identification information of whether the standard regulations are stored in the standard regulation list, the standard regulations which are not stored in the standard regulation list are correspondingly sent to an external standard regulation management module or an internal standard regulation management module; performing corresponding warehousing and full-process management according to the standard regulations which are not warehoused in the external standard regulation management module or the internal standard regulation management module; and outputting the standard regulations after full-process management in the standard regulation list corresponding to the target vehicle model. The reliability and practicability of the automobile standard regulations in the management process are effectively improved.

The invention provides a method and equipment for realizing smooth switching between a ground-based enhanced positioning resolving mode and a satellite-based enhanced positioning resolving mode, a user side takes the ground-based enhanced positioning resolving mode as a main mode of enhanced positioning, judges whether ground-based enhancement is available or not according to a preset abnormal condition detection index, and smoothly switches to satellite-based enhancement if the ground-based enhancement is not available; when a main mode is switched from ground-based enhancement to satellite-based enhancement, an asynchronous positioning mode with additional time accumulation error compensation is adopted, the stability of the positioning precision of a user side is maintained in combination with deviation compensation, and meanwhile, the satellite-based enhancement is restrained and the convergence speed of the satellite-based enhancement is increased in combination with ground-based enhancement solution information; and when the main mode is switched from the satellite-based enhancement to the ground-based enhancement, the ground-based enhancement is constrained by using prior information provided by the satellite-based enhancement, and the restarting speed of the ground-based enhancement positioning mode is improved. According to the method, the continuous smoothness and positioning consistency of ground-based and satellite-based enhanced positioning resolving mode switching are improved by optimizing switching, and the reliability of the Beidou enhanced positioning technology can be improved.

The invention belongs to the field of auditory meatus sound wave reflection signal processing, and discloses a mouth shape recognition method and system based on auditory meatus sound wave reflection signal processing, noise and interference components in signals are eliminated, and sound wave signals are subjected to preprocessing such as cutting and tailoring; obtaining an optimal regular path between the two time sequences; useful information is extracted; performing preprocessing and feature extraction on the signals; acoustic wave signal features are extracted through Fourier transform, frequency domain energy calculation, feature value calculation and the like; and carrying out KNN classifier classification. Theoretical and technical supports are provided for improving the precision and robustness of mouth shape recognition, exploring the application potential of ear canal sound wave reflection signal processing in mouth shape recognition and promoting development of a mouth shape recognition technology achieved through ear canal sound wave reflection signal processing in practical application.

This invention discloses a hierarchical supervised super-resolution reconstruction method, system, device, and medium for remote sensing images. The method includes acquiring a high-resolution original remote sensing image, preprocessing it to obtain multiple sets of sub-pixel remote sensing images; constructing a sub-pixel remote sensing image reconstruction network, and pre-training it using a low-resolution remote sensing image and a set of sub-pixel remote sensing images as input and ground truth, respectively; constructing an upsampling-free remote sensing image super-resolution network, and optimizing it using multiple sets of sub-pixel images; constructing a multi-level supervised upsampling-free super-resolution network, and training it using an intermediate-resolution remote sensing image and a high-resolution original remote sensing image as ground truth, respectively; and performing super-resolution reconstruction based on the remote sensing image super-resolution reconstruction model, inputting the remote sensing image whose resolution needs to be improved, to obtain a high-resolution remote sensing image. This invention, by employing a hierarchical supervised and upsampling-free super-resolution reconstruction deep network, can improve the quality and detail of super-resolution reconstruction of remote sensing images.

The utility model discloses a peristaltic pump for accurately controlling the flow of a frying pan, relates to the technical field of peristaltic pumps for frying pans, and aims to solve the problems that the peristaltic pump in the prior art is generally only provided with a single pump head, so that only single-pipeline conveying can be carried out, and the practicability and convenience of the peristaltic pump are influenced when different liquid materials are conveyed during use. A driving device is arranged at the top of the base, a control panel is arranged on the upper surface of the driving device, and a display screen and buttons are arranged on the surface of the control panel; the pump set is arranged on the front end face of the driving device, three pump heads are arranged on the pump set, and a pump body is arranged in the three pump heads in a penetrating mode; the mounting frame is arranged on the rear end face of the driving device, the two sides of the mounting frame extend to the two sides of the driving device, and a plurality of mounting holes are formed in the mounting frame.

The application provides a polar surface elevation change estimation method and system based on IGG III anti-difference estimation, satellite altimetry data extraction; satellite altimetry data processing, including extracting qualified data points, performing geophysical correction, performing along-track median filtering based on a sliding window; separating the data into ascending and descending orbits and storing according to the orbit number; performing elevation change calculation based on IGG III weight function, including extracting the point with the largest number of points in the orbit as a reference orbit, interpolating the points on other repeat orbits to the points with consistent latitude of the reference orbit through inverse distance weighting; assuming that the elevation value is linearly related to the distance under the condition that a group of repeat orbit points are at the same latitude, performing least squares based on an elevation change function model, introducing the standard deviation of the least squares as a priori accuracy into the IGG III weight function for calculation, and iteratively obtaining elevation change scattered points; performing Kriging interpolation method to generate an elevation change result and output.

The invention provides a multi-target color correction method and device for an SAR image. The method comprises the steps that an original image is preprocessed; performing linear stretching transformation based on the image gray value to construct a multi-target optimization model; solving linear stretching parameters of all the images based on a multi-objective optimization model; and carrying out stretching processing on the original image by using the obtained linear stretching parameter, and then embedding. According to the method, the linear stretching coefficient of the SAR image is solved based on the multi-target optimization idea, gray value information on the SAR image is effectively utilized, and the inlaid SAR image shows color consistency.

The utility model relates to the technical field of outdoor articles, and discloses a refrigeration heat preservation tent with an air flowing function, which comprises an outer support and an outer tent, the outer tent is connected with the outer support, the outer support is used for supporting the outer tent, the inner tent is arranged on the inner side of the outer tent, and an inner support is further arranged on the surface of the inner tent. The inner support is used for supporting the inner tent, and the outer tent and the inner tent are spaced by a distance to form an air interlayer area; the air supply assembly is arranged on the surface of the outer tent and used for supplying air outside the outer tent into the air interlayer area so as to form air flow in the air interlayer area to isolate heat. According to the refrigeration and heat preservation tent with the air flowing function, the double-layer mechanical ventilation design is adopted for the tent, and a semi-conductive refrigeration material is combined, so that effective control over the temperature in the tent is achieved, and the comfort level of a user is improved.

The utility model discloses a tool for overhauling a steam turbine bearing. The tool comprises a bottom plate, a mounting plate, a lifting mechanism and two sets of positioning mechanisms. One side of the bottom plate is arranged on the ground, the other side of the bottom plate is connected with one end of the lifting mechanism, the other end of the lifting mechanism is connected with the mounting plate, and the bottom plate and the mounting plate are arranged in parallel; each positioning mechanism comprises a side plate, a positioning plate and a moving assembly. The two side plates, the two positioning plates and the two moving assemblies are oppositely arranged. The two side plates are connected to the side, away from the bottom plate, of the mounting plate and located at the two ends of the mounting plate correspondingly. The two positioning plates are connected with the two side plates through moving assemblies correspondingly and are in sliding connection with the mounting plate. The two positioning plates are both configured to abut against the steam turbine bearing. The technical effect that the steam turbine bearing is more stable during overhauling is achieved, and the convenience of the steam turbine bearing during overhauling is improved.

The application provides a fusion data broadband coseismic velocity waveform real-time reconstruction method based on cascade filtering, which uses cascade filtering to fuse high-frequency GNSS original Doppler data, high-frequency GNSS carrier phase data and accelerometer data to realize broadband coseismic velocity waveform real-time reconstruction, and the realization process comprises the following steps: high-frequency GNSS / accelerometer co-located station real-time acquisition of high-frequency GNSS observation data, broadcast ephemeris and original acceleration data, and sending to a ground computing center; the ground computing center real-time calculation of high-frequency GNSS TDCP average velocity and high-frequency GNSS RD instantaneous velocity; the ground computing center zero offset correction of the real-time received original acceleration data to obtain zero offset correction acceleration data; and the ground computing center real-time reconstruction of the broadband coseismic velocity waveform of the high-frequency GNSS / accelerometer co-located station according to the high-frequency GNSS TDCP average velocity, the high-frequency GNSS RD instantaneous velocity and the zero offset correction acceleration data by using cascade filtering.

The application provides a dust falling device, which comprises a vertical dust falling mechanism, an adjusting dust falling mechanism and a triggering mechanism, wherein the adjusting dust falling mechanism is arranged on the vertical dust falling mechanism, the adjusting dust falling mechanism comprises a first dust falling assembly, the first dust falling assembly has an initial position and a dust falling position for dust falling on a target object, and the first dust falling assembly is movably arranged between the initial position and the dust falling position relative to the vertical dust falling mechanism; the triggering mechanism is connected with the first dust falling assembly, a control signal is sent to the first dust falling assembly through the triggering mechanism, and the first dust falling assembly is controlled to move between the initial position and the dust falling position. The vertical dust falling mechanism is arranged to dust fall on a target area, the adjusting dust falling mechanism is arranged to dust fall on a target object, and the triggering mechanism is arranged to control the starting of the adjusting dust falling mechanism, so that the problem that dust falling needs to be manually performed in the prior art, thereby resulting in poor dust falling effect and poor practicability, is solved.

This invention relates to a video object removal method based on a text-based video model and learnable negative tokens, comprising: acquiring the original video to be processed and a specified target to be removed; segmenting the target to be removed using a video segmentation model to generate a corresponding video mask sequence; preprocessing the original video and the video mask sequence to obtain masked video latent features and mask latent features; constructing an object removal model based on a text-based video model, wherein the object removal model retains the cross-attention module of the pre-trained text-based video model; setting the text prompt input to empty and introducing learnable negative tokens; inputting the masked video latent features, mask latent features, and negative tokens into the object removal model; the object removal model processes the negative tokens through the cross-attention module, suppressing object generation features within the mask region, and generating filling content based on video background information; and outputting the video after removing the specified target.

The present invention provides a binary Laplace noise sequence generation system and method with given correlation. The system is provided with a binary Gaussian white noise sequence generation module, comprising 4 groups of binary Gaussian white noise sequence generators, each group of binary Gaussian white noise sequence generators respectively generates a group of binary Gaussian white noise sequences; a binary correlated Gaussian noise sequence generation module, comprising 4 groups of binary filters, the 4 groups of binary filters input are respectively binary Gaussian white noise sequences, and the outputs are respectively correspondingly generated binary correlated Gaussian noise sequences; a binary correlated Laplace noise sequence generation module, using the 4 groups of binary correlated Gaussian noise sequences to generate a binary correlated Laplace noise sequence through calculation; by adjusting the parameters of the binary filters in the binary correlated Gaussian noise sequence generation module, the generated binary correlated Laplace noise sequence meets the given autocovariance function, and supports the differential privacy protection requirements of binary variable time series data.

The present invention discloses a method and device for filling a region with missing high-precision DEM data, which belongs to the field of photogrammetry and remote sensing technology, and includes: obtaining a high-precision InSAR hole DEM to be filled and a low-resolution DEM consistent with the geographical location of the high-precision InSAR hole to be filled; determining terrain feature data and SAR feature data according to the low-resolution DEM; inputting the low-resolution DEM, terrain feature data and SAR feature data into a pre-trained Transformer and CNN intelligent learning reconstruction model based on multi-source features to obtain a predicted high-resolution DEM of the hole region; combining the predicted high-resolution DEM of the hole region with the high-precision InSAR hole DEM to be filled to generate a high-precision DEM product. The implementation method of the present invention is simple and easy to implement, and the overall process structure is clear, so that the process of hole filling is fully intelligent and automated.

The utility model relates to the technical field of paper conveying line equipment, and discloses water transfer printing printing paper conveying line equipment which comprises a base, four supporting legs are fixedly connected to the lower portion of the base and evenly distributed, supporting rods are fixedly connected to the two sides of the upper portion of the base, an electric conveying belt is arranged on the upper portion of the base, and the electric conveying belt is arranged on the lower portion of the base. The auxiliary mechanism has the advantages that the threaded rod is driven to rotate by rotating the handle according to the thickness of calico paper, so that the sliding rod drives the auxiliary mechanism to move, the height of the auxiliary mechanism is adjusted, the auxiliary mechanism is attached to the calico paper, and the calico paper can be placed on the auxiliary mechanism. The motor is started to drive the first rotating shaft to rotate, the first rotating shaft can drive the auxiliary conveying belt to rotate, so that the auxiliary mechanism is matched with the electric conveying belt, calico paper on the electric conveying belt is moved, and the problems that an existing device is poor in using effect and poor in practicability are solved.

This invention provides a method, system, and computer device for feature matching of heterogeneous images. The method includes acquiring two heterogeneous images, extracting image edges to obtain feature regions as targets for matching; calculating the gray-level centroid of each target region; determining the principal direction of each target region, using the principal direction as the starting direction and clockwise as the positive direction, drawing several rays clockwise from the origin of each region, calculating the Euclidean distance between the corresponding intersection points and the origin of each region, arranging them in the generation order, removing several maximum and minimum values, and normalizing the remaining ordered array to form a feature vector; calculating the Euclidean distance between the feature vectors of each target region, and considering a successful match when the Euclidean distance between the feature vectors of two target regions is less than a preset threshold. This invention effectively solves the region matching problem caused by image rotation and scale changes in heterogeneous images, significantly improving the region matching results.

The utility model relates to the field of medical instruments, and discloses a medical movable integrated table and chair which comprises a table body, a seat and a connecting assembly, and the seat is connected with the table body through the connecting assembly; the connecting assembly comprises a first connecting piece connected with the side wall of the bottom end of the table body, and a second connecting piece connected with the side wall of the bottom end of the table body, the second connecting piece is arranged in the first sliding cavity of the first connecting piece in a sliding mode, and a second sliding cavity is formed in the second connecting piece; the third connecting piece is arranged in the second sliding cavity of the second connecting piece in a sliding mode, a mounting groove is formed in the end, away from the table body, of the third connecting piece, and the seat is connected with the connecting assembly through the mounting groove. The medical movable integrated table and chair can be moved at the same time, carrying work of nurses is greatly facilitated, meanwhile, the drawers for separating sterile and non-sterile articles are arranged, the nurses can check and check conveniently, meanwhile, the medical movable integrated table and chair can be conveniently used by experts, and garbage classification can be carried out.

The utility model discloses a cable erecting device for electrical construction, which comprises a trolley, a limiting protection mechanism and an adjusting assembly, the limiting protection mechanism comprises a bottom plate, a pair of vertical plates is arranged on the top surface of the bottom plate, a first polish rod is arranged between the vertical plates, and a pulley is matched on the first polish rod. The adjusting assembly comprises two sliding rods, the sliding rods are arranged in the through holes, sliding blocks are arranged at the bottom ends of the sliding rods, a second polished rod is arranged between the sliding blocks, and a pair of check rings is arranged on the second polished rod. An auxiliary roller is arranged on the second polish rod in a matched mode and located between the check rings. The sliding rod is sleeved with a spring, and the two ends of the spring are connected to the top plate and the sliding block respectively. By arranging the sliding block, the sliding rod, the spring, the second polished rod, the baffle ring and the auxiliary roller, the second polished rod moves upwards to drive the sliding block, the sliding rod and the spring to move and extrude the spring, so that the distance between the auxiliary roller and the pulley can be adjusted according to the width of a cable, and the problem that the practicability of the assembly is reduced is solved.

The invention discloses a category data analysis algorithm for personalized shuffling differential privacy protection, and relates to the field of data privacy protection and information security, the category data analysis algorithm for personalized shuffling differential privacy protection comprises the following steps: a local user inputs data and a privacy budget to a local randomizer; generating interference through a local randomizer, sampling a plurality of false messages, and sending a disturbed message set and a privacy budget to a shuffling device; the shuffling device shuffles the disturbed message set and privacy budget through a random permutation method; and sending the shuffled disturbed message set and the privacy budget data set to a server for aggregation. According to the method, by introducing the personalized differential privacy and shuffling model, the contradiction between privacy protection and data practicability is effectively solved, the relevance between the data points is broken through shuffling, the privacy protection effect is remarkably improved, and the risk of deducing the original data of the user through the data relevance is prevented.

The application relates to an antenna phase center calibration method and system based on minimum PCV deviation constraints, which comprises the following steps: determining the equivalent conversion relationship of a phase model according to the coupling of PCO and PCV; determining the optimal constraint condition; converting the original model into an equivalent phase model according to the optimal constraint condition; constructing virtual observation values for simulation positioning test, which comprises the following steps: constructing virtual observation values by using a first model in a virtual coordinate system, correcting by using another model, then using a least square method for single point positioning calculation to calculate the positioning error in the north-east-high direction; verifying the coordinate estimation of the simulation positioning test and the difference between the converted phase model PCO with the constraint condition, and outputting the antenna phase center calibration result. The application has the advantages that on the basis of considering the PCO / PCV coupling, additional constraint conditions are added to convert the compared phase models, the workload of phase model comparison is reduced, and the influence of the phase model difference on positioning is more directly reflected.

The application discloses an electrical instrument convenient to install and maintain, which comprises a pressure gauge, a flange and a sealing device; the pressure gauge is connected to a pipeline through the flange; the sealing device comprises a driving connection assembly and two semicircular fixed clamping grooves, one end of the driving connection assembly is rotationally connected to one semicircular fixed clamping groove, and the other end is clamped to the other semicircular fixed clamping groove, so that the two semicircular fixed clamping grooves are spliced to form an annular clamping groove; the annular clamping groove is used for clamping the flange and the pipeline; the inner side of the semicircular fixed clamping groove is slidably provided with a movable sealing piece along the radial direction of the semicircular fixed clamping groove; the outer side of the driving connection assembly is provided with a limiting assembly; the limiting assembly penetrates through the driving connection assembly along the radial direction of the semicircular fixed clamping groove and is embedded into the outer side of the semicircular fixed clamping groove. The stability and practicability of the existing installation device of the electronic instrument are improved, the electrical instrument is more convenient to install and maintain, the loosening of the connecting plate is avoided, and the practicability and stability of the device are improved.

The utility model provides a metal hose with a filtering function. The metal hose with the filtering function comprises a metal hose body, the metal hose body is composed of a first metal hose and a second metal hose, and the two ends of the second metal hose are a second water inlet end and a second water outlet end respectively; a filtering assembly is arranged in the second metal hose and comprises a filtering cotton plate, an activated carbon filtering plate and a first connecting rod, the filtering cotton plate is installed in the second metal hose in a sliding mode, the activated carbon filtering plate is installed in the second metal hose in a sliding mode, and the activated carbon filtering plate is connected with the filtering cotton plate; and the connecting rod I is fixedly mounted on the filter cotton plate. The metal hose with the filtering function has the advantages that operation is easy, fluid in the metal hose can be filtered, and then the problem that the practicability is reduced due to the fact that impurities in the fluid cannot be filtered out in time can be solved.

The utility model relates to the technical field of tank body machining, and discloses a fixing clamp for tank body machining, which comprises a workbench, two vertical plates are arranged on the upper surface of the workbench, three main clamping plates are arranged between the two vertical plates, and the two main clamping plates on the lower side are respectively and fixedly connected with the two vertical plates. When a worker needs to machine a tank body, a third motor is started to drive a second bidirectional threaded rod to rotate, finally, three main clamping plates clamp the tank body, subsequently, a first motor is started to drive a connecting rod to rotate, and finally, secondary clamping of the tank body is achieved. The problems that some existing fixing clamps for tank body machining can only fix tank bodies of specific sizes, and flexibility and practicability are relatively low are solved, the distance between main clamping plates is adjusted, two auxiliary clamping plates are made to conduct secondary clamping, and tank bodies of different sizes are clamped; and the tank bodies with different sizes can be clamped without replacing the clamp by a worker.

The drying device for agricultural and sideline product processing comprises a box body, the bottom of the box body is fixedly connected with a first motor, the output end of the first motor penetrates into an inner cavity of the box body and is fixedly connected with a screen frame, the bottoms of the two sides of the screen frame are both provided with openings, the top of the inner cavity of the box body is fixedly connected with a stirring rod, and the stirring rod is fixedly connected with a motor. The bottom of the stirring rod penetrates into an inner cavity of the net frame, and the right side of the box body is fixedly connected with a conveying box. Through cooperative use of the box body, the first motor, the screen frame, the opening, the stirring rod, the conveying box, a second motor, a transmission rod, a spiral blade, a heating box, a third motor, fan blades and a heating plate, the drying device solves the problems that in the prior art, a drying device for agricultural and sideline product processing is prone to accumulation in the drying process, materials cannot be evenly dried, and the drying effect is poor. And drying is not thorough enough, the drying efficiency is poor, and therefore the practicability of the drying device is reduced.