25results about How to "Contributes to accuracy" patented technology

The invention discloses wood floor plain plate surface defect intelligent control repairing and shaping equipment and method.The wood floor plain plate surface defect intelligent control repairing and shaping equipment comprises a supporting frame, a first U-shaped frame is fixedly installed on the upper surface of the supporting frame, multiple sets of supporting wheels are rotatably installed in the first U-shaped frame, a transverse rod is fixedly installed on the upper surface of the supporting frame, and two sets of transmission mechanisms are slidably installed on the outer surface of the transverse rod; an overhead rod is fixedly installed at the other end of the upper surface of the supporting frame and is arranged at the upper end of the periphery of the transmission mechanism in an overhead mode, and a repairing mechanism is fixedly installed on the upper surface of the overhead rod. Through the design of the transmission mechanism and the repairing mechanism, the flatness of the surface of the plain plate can be automatically detected in the plain plate conveying process, the part needing to be repaired can be automatically filled with a repairing material, and pits or cracks filled with the repairing material can be trimmed and stricken after the repairing material is filled; and the flatness of the surface of the plain board can be maintained.

The invention discloses a side backward visual safety early warning method based on deep learning, and particularly relates to the field of safety early warning, comprising time region division, side backward data acquisition, side backward data analysis, comprehensive analysis and safety early warning. According to the method, comprehensive and real-time monitoring of the side backward safety of the target vehicle is achieved through the deep learning technology, potential safety risks can be found and early warned in time through refined time region division, multi-dimensional data collection and analysis, establishment of a comprehensive evaluation model and triggering of an early warning mechanism, and the safety of the target vehicle is improved. The method not only improves the running safety of the vehicle, but also reduces the accident rate caused by the lateral backward safety problem, provides powerful technical support for the safe running of the vehicle, and has important practical application value and popularization significance.

The invention discloses a water-air fast scanner and a water bottom scanning method based on the water-air fast scanner, and relates to the field of water body ecological environment investigation. The problems that an existing underwater scanner cannot be suitable for a shallow water area with the water depth smaller than 5 m, GPS position information and a real scanning position are staggered, and the position precision of a bottom map is reduced are solved. The method comprises the following steps: determining a deployment mode of a water-air rapid scanner, and selecting a corresponding baseline length and array spacing; configuring a working mode of the camera array, and synchronizing the camera array and a GPS module clock; the water-air fast scanner records water bottom image information; extracting a video frame; calculating scanning track coordinate data of each camera; interpolation is carried out on the scanning track coordinate data, and a smooth GPS motion track is obtained; acquiring a route track of the camera according to the GPS motion track and the array spacing; and performing reconstruction processing on the route trajectory by adopting SfM to obtain a water bottom image. The method is suitable for the fields of ocean research, geological survey, underwater archaeological and the like.

This invention discloses a method for predicting urban rail transit passenger flow based on multimodal information fusion. First, feature vectors of urban points of interest are obtained. Then, a directed graph of rail transit stations and the positional relationship between rail transit stations and points of interest are constructed to extract feature vectors of rail transit stations. Social media text from various time periods is crawled to extract public travel interest feature vectors. Then, a multi-head cross-attention model is used to fuse the public travel interest feature vectors, rail transit station feature vectors, and historical passenger flow feature vectors. Finally, an LTSM network is used to predict the passenger flow feature vector for the next time period. This invention integrates urban point of interest features and social media text features to predict urban rail transit passenger flow, improving prediction accuracy.

The invention provides a wide-range liquid metal oxygen concentration sensor error analysis method and device, relates to the technical field of liquid metal experiment devices, and solves the technical problem that the output voltage error test range of an existing liquid metal oxygen sensor is narrow in coverage. According to the invention, Ni and Fe are orderly added into the liquid metal in the PbO oxygen saturation state, and NiO and Fe3O4 can be sequentially generated through reduction reaction, so that the error analysis range of the liquid metal oxygen sensor can be expanded from 0.62-0.85 to 0.62-1.22 V by measuring the output voltage of the oxygen sensor in the Ni / NiO and Fe / Fe3O4 oxygen saturation states and comparing the output voltage with a theoretical saturation potential value. On the basis of widening the analysis range, the error analysis applicability can be improved, and the accuracy evaluation capability of the liquid metal oxygen sensor is improved; the device has the advantages of being wide in measurement range, good in sealing performance, accurate in positioning, convenient to disassemble and assemble and the like, and meets error analysis and accuracy evaluation of the liquid metal oxygen concentration sensor in a wide measuring range.

The invention relates to the technical field of photoelectric detection, and discloses a gradient band gap photodiode detector, a preparation method thereof and a reconstruction spectrometer. The preparation method comprises the steps of providing a substrate; forming a conductive layer on the surface of one side of the substrate; forming a first carrier transport layer on the substrate; forming an initial semiconductor photosensitive layer on the first carrier transport layer; immersing the substrate into the reaction solution along a first preset direction; pulling out the substrate from the reaction solution to form a gradient band gap semiconductor photosensitive layer; forming a second carrier transport layer on the gradient band gap semiconductor photosensitive layer; and forming a plurality of first electrode structures arranged in an array on the second carrier transport layer, and forming a second electrode structure connected with the conductive layer on the substrate. The gradient band gap semiconductor photosensitive layer and the first electrode structure of the array form a photodiode array photoelectric detector array, different spectral responses and wide dynamic response ranges are achieved, and the linear solution accuracy and spectral resolution of a spectrum reconstruction algorithm are improved.

The utility model relates to the technical field of tool clamps, and discloses a rotary table clamp for machining a front frame of a battery tray, which is convenient to machine and high in efficiency and comprises a bottom plate, rotating seats are arranged at two ends of the bottom plate, rotary tables are arranged on the inner sides of the rotating seats, and a mounting plate is arranged between the two rotary tables. A pressing mechanism and a limiting mechanism are arranged on the upper surface of the mounting plate, the limiting mechanism comprises a first limiting assembly arranged at any end of the mounting plate and a second limiting assembly arranged on the side of the mounting plate, and the pressing mechanism comprises a plurality of pressing assemblies arranged on the two sides of the mounting plate. An avoiding hole is formed in the mounting plate, the limiting mechanism is used for limiting the end part and the side part of the front frame of the battery tray, and the pressing mechanism is used for pressing the front frame of the battery tray placed on the mounting plate, so that the clamping of the front frame of the battery tray is realized.

This application relates to a method, system, and storage medium for extracting structured data from literature. The method includes: acquiring information about the literature to be processed and information about the domain of interest; generating intent recognition routing results by calling a corresponding domain intent recognition model based on the information about the domain of interest; constructing prompt words based on the information about the domain of interest and the intent recognition routing results, and extracting first target literature information from the information about the literature to be processed; constructing a corresponding domain similarity function based on the intent recognition routing results, and generating second target literature information by removing similar literature from the first target literature information; and outputting experimental information, experimental knowledge graphs, and source relationships in a structured form based on the second target literature information. This application determines the intent recognition routing results through domain intent recognition, adaptively selects the extraction strategy and domain similarity function, and combines multimodal parsing and block processing to achieve high-completeness extraction, cross-domain adaptive fusion, and traceable structured output of experimental information from cross-domain literature.

The invention discloses a broadband vector signal generator, which comprises a multi-path phase locking module, a baseband processing module and a radio frequency processing module, and is used for carrying out phase locking on a synchronous reference signal to obtain five clock signals; obtaining waveform data, and performing digital-to-analog conversion on the waveform data based on the first clock signal to obtain two paths of baseband signals; performing frequency division on the third clock signal to obtain a frequency division signal; taking the second clock signal or the frequency division signal as a local oscillator signal of quadrature modulation, and performing quadrature modulation on the two paths of baseband signals to obtain a quadrature modulation signal; performing power control on the quadrature modulation signal to obtain a first radio frequency signal, a first control signal and a second control signal; performing up-conversion on the first control signal by taking the fourth clock signal as a local oscillator signal of up-conversion to obtain a second radio frequency signal; and performing down-conversion on the second control signal by taking the fifth clock signal as a down-conversion local oscillator signal to obtain a third radio frequency signal. The broadband vector signal generator can realize wide bandwidth and high linearity.

The invention relates to the technical field of air traffic management, in particular to a knowledge ontology-driven navigation information structured information extraction method, which comprises the following steps of: determining a classification basis table of a navigation information data set; preprocessing the navigation information of which the information is to be extracted to obtain a plurality of rule structure items and a navigation announcement text; establishing cue words based on the event attribute sequence of the navigation announcement text and the navigation information; inputting the cue word into the large language model; the event state transition model determines a current state according to a historical state, and the method comprises the following steps: when the current state is a value generation state, a state decision maker determines whether a next state is a value generation state or an end value state; and finally obtaining a plurality of event types and attributes. And taking the plurality of event ontologies and the plurality of rule structure items as the extracted structured information together. According to the structured information extraction method and device, the structured information extraction accuracy can be improved.

The invention discloses a depth completion method based on infrared feature mining and cross-modal fusion, and the method comprises the following steps: collecting an infrared image and a sparse depth map, and adding an infrared adaptive edge enhancement and feature extraction module and a cross-modal feature three-dimensional diffusion module on the basis of an existing KBnet network. According to the depth completion method based on infrared feature mining and cross-modal fusion, an infrared adaptive edge enhancement and feature extraction module is provided for the characteristics of low contrast and low texture of an infrared image, more features are provided for a completion network, and the accuracy of object edge completion in a sparse depth image is improved. In order to solve the problem that low-resolution infrared images guide high-precision point cloud completion, a cross-modal feature three-dimensional fusion module is provided, the cross-modal feature fusion performance is enhanced, and a missing depth region can be smoothly filled.

The utility model discloses a wall body assembling and fastening structure, which can ensure that the height of a left wall body is consistent with that of a right wall body through a fixing plate on the bottom surface of the upper surface of the right wall body, and then align the left wall body with the right wall body through an aligning structure arranged on the fixing plate, thereby facilitating the subsequent assembling and splicing and the accuracy of the subsequent splicing. After the left wall body and the right wall body are aligned, the left wall body and the right wall body approach each other, the left wall body and the right wall body are spliced and assembled through the inserting shafts, the inserting grooves and the locking structures, then external bolts are matched with the fastening screw holes and the T-shaped plate screw holes for further fastening, and when the whole structure is actually spliced, the efficiency is high, and splicing is accurate.

The invention relates to the technical field of writing, in particular to a handwriting self-adaptive correction system for a tablet personal computer, which comprises a handwriting input module; the template determination module is used for determining a handwritten target template; the handwriting feature acquisition module is used for acquiring the pause time of the writing action; a handwriting correction module; a correction display module; the feedback module is used for determining the correction angle and the correction smoothness in the process of correcting the characters into the handwritten target template; and a receiving module. The handwriting input module and the template determination module are used for comparing the input characters with the font template to determine the correction template, the handwriting feature acquisition module is used for determining the correction moment, and the handwriting correction module and the correction display module cooperate to correct and display the handwriting. And finally, a feedback module and a receiving module feed back the correction angle and the correction smoothness to the user, and perform correction based on user adjustment and determine whether a new handwriting template is generated or not, so that correction accuracy is ensured.

The invention discloses a grid type hot bed base plate, a 3D printer and a method. The base plate comprises a supporting body. The grid assemblies are installed at the top of the supporting body, and the multiple grid assemblies are sequentially arranged in the full-length direction of the supporting body at intervals; the positioning assemblies are installed on the two opposite sides of the supporting body and used for positioning the multiple grid assemblies; the guide assembly is mounted on the positioning assembly, and a pressing assembly is mounted at the top of the guide assembly; and the control device is electrically connected with the pressing assembly, and the control device is used for controlling the pressing assembly to move in the full-length direction of the supporting body through the positioning assembly and pressing the multiple grid assemblies downwards in sequence at the same time, so that the tops of the grid assemblies are separated from the printing workpiece. And after the printing of the workpiece is completed, each grid assembly can be effectively separated from the bottom of the workpiece through the cooperation of the guide assembly and the pressing assembly, the workpiece can be quickly dismounted from the top of the grid assembly, the dismounting efficiency is improved, and the damage to the workpiece is avoided.

The utility model discloses a glass bottle spraying device, and relates to the technical field of spraying equipment, the glass bottle spraying device comprises a rack and a conveying chain rotatably mounted on the rack, a plurality of mounting mechanisms used for mounting glass bottles are fixedly mounted on the conveying chain, the mounting mechanisms are mounted on the conveying chain at equal intervals, and the glass bottle spraying device further comprises a spraying mechanism used for spraying the glass bottles; the spraying mechanism comprises a nozzle, the nozzle is communicated with a material conveying pipe and a gas spraying pipe, the material conveying pipe is connected with a diaphragm pump used for supplying paint, the gas spraying pipe is connected with pressure gas, the spraying mechanism further comprises a control mechanism used for controlling the nozzle to intermittently spray the paint to the glass bottle, and the control mechanism is used for controlling the nozzle to intermittently spray the paint to the glass bottle. When the glass bottles are located at the positions of the nozzles, the nozzles spray paint to the glass bottles, and when the neutral positions of the two adjacent glass bottles are located at the positions of the nozzles, the nozzles stop spraying the paint under the control of the control assembly, so that the use amount of the paint is saved, the utilization rate of the paint is improved, and the pollution of the paint to the environment is reduced.

This application relates to the field of fault prediction technology, specifically to a method and system for monitoring and early warning of fault risks in nuclear power plant equipment. Specifically, it includes: constructing a first fluctuation feature value based on the randomness of the peak occurrence time and the fluctuation characteristics of the signal sharpness in the vibration signal of a planetary gearbox bearing in a nuclear power plant; constructing a second fluctuation feature value by analyzing the distribution of sideband features in the envelope spectrum of the bearing vibration signal in each sampling period and comparing it with the center frequency of the previous sampling period; appropriately adjusting the filter length based on both factors, and combining this with a filtering algorithm to extract fault feature signals from the bearing vibration signal in each sampling period, thereby performing fault detection of the planetary gearbox within each sampling period. This solves the problem of inappropriate filter length values ​​when filtering the bearing vibration signal of a nuclear power plant planetary gearbox, improves the extraction accuracy of fault feature signals, and contributes to the accuracy of subsequent fault detection.

The invention belongs to the technical field of electronic product auxiliary material detection, and particularly relates to an electronic product auxiliary material belt lamination detection device which comprises a material carrying assembly. The detection assembly comprises a stand column fixed to the circle center of the base plate, a first fixing plate, a second fixing plate and a third fixing disc are welded to the end, away from the base plate, of the stand column, a rotating disc is rotationally installed at the end, away from the stand column, of the third fixing disc, and a vertically-lifting displacement structure is arranged on one side of the bottom of the rotating disc. A distance sensor is fixed to the movable end of the displacement structure. According to the fitting detection equipment for the auxiliary material belt of the electronic product, the visual camera is used for detecting whether the product is mistakenly pasted or missed, the distance sensor is used for detecting the distance between the product and a label, whether the pasted label has edge warping and wrinkling or not is judged according to the distance, feeding, discharging and detection work can be achieved at the same time, and the production efficiency is improved. And continuous assembly line type detection is realized, so that the working efficiency of detection is effectively improved.

The invention discloses an agitating lorry with a concrete slump detection device, and relates to the technical field of concrete detection, the agitating lorry comprises a cylinder, the whole body is of a split structure, the cylinder comprises a plurality of same sub-cylinder parts which are distributed in a surrounding manner, and every two adjacent sub-cylinder parts are in sealed connection through a connecting part; an elastic interlayer covers the inner wall of each sub-cylinder part, a closed cavity is formed between the elastic interlayer and the inner wall of the corresponding sub-cylinder part, gas is injected into or discharged from the closed cavity, and the elastic interlayer can expand and protrude out of the plane of the inner wall of the sub-cylinder part or contract and cling to the inner wall of the sub-cylinder part; the bottom end of each sub-cylinder part can swing outwards relative to the top of the sub-cylinder part so that the cylinder body can be diverged and expanded from the bottom, and locking assemblies in one-to-one correspondence with the sub-cylinder parts are arranged on the periphery of the bottom of the cylinder body and used for limiting the swing action of the sub-cylinder parts. The concrete slump test device has the effect of improving the accuracy of the concrete slump test result.

The utility model belongs to the technical field of steel structure welding, and particularly discloses bridge steel structure welding equipment which comprises a steel beam, a clamping plate is movably clamped to the outer surface of the steel beam, a fixing frame is fixedly connected to the outer surface of the clamping plate, and a fixing bolt is arranged on the outer surface of the clamping plate. I-shaped steel is arranged above the fixing frame through a stable clamping mechanism, the stable clamping mechanism comprises a guide shaft fixedly connected to the inner side of the fixing frame, a sliding plate is slidably connected to the outer surface of the guide shaft, a shifting plate is fixedly connected to the top of the sliding plate, and a clamping steel plate is fixedly connected to the inner side of the shifting plate. According to the bridge steel structure welding equipment, it can be ensured that I-shaped steel is kept in a relatively static state in the welding process through the stable clamping mechanism, the accuracy and consistency of welding work are facilitated, welding defects are avoided, the welding quality is improved, structural deviation and asymmetry are prevented, and the stability of the whole bridge structure is improved.

The invention provides an attitude angle detection method of a data glove based on a linear interpolation method, and relates to the field of attitude perception, and the attitude angle detection method of the data glove based on the linear interpolation method comprises the following steps: collecting state data of the data glove through a sensor group preset on the data glove, according to the collected state data of the data gloves, the states of the data gloves are recognized and classified, and the states of the data gloves comprise the static state and the moving state; setting the weight of the attitude angle of the data glove according to the recognition result of the state of the data glove, and measuring and calculating the attitude angle of the data glove; and compensating and correcting the attitude angle of the data glove through a linear interpolation method. According to the method, the state of the data glove is accurately identified and classified by combining various algorithms, so that the accuracy of attitude angle detection is improved, the accuracy, continuity and real-time performance of attitude tracking can be effectively improved, and the method is very suitable for being used in various dynamic environments.

The blood pressure measuring device comprises a machine body, a lifting mechanism and a wrapping mechanism, a groove is formed in the machine body, the interior of the groove is connected with a mounting frame through the lifting mechanism, the wrapping mechanism is mounted on the mounting frame, a sliding groove is further formed in the upper surface of the machine body, and the upper surface of the machine body is connected with the lifting mechanism through the sliding groove. A connecting block is slidably connected into the sliding groove in a damping mode, the upper surface of the connecting block is connected with an elbow supporting plate through a first spring, the position of the elbow supporting plate is conveniently changed according to the conditions of different patients, it is avoided that the elbow supporting plate influences blood pressure measurement of the patients, and the mounting frame is in shaft connection with the upper surface of the machine body. The arm of a patient can quickly penetrate through the mounting rack and the supporting plate, so that blood pressure detection can be quickly performed, and the patient with arm deformity and arm injury can conveniently penetrate through the mounting rack and the supporting plate, so that the application range can be conveniently widened.

The present invention provides a speed-torque closed-loop control system and method for a motor test system, wherein a set speed value is input into a rate limiter and a mode selector, a speed / torque signal output from the mode selector is filtered in a filter, the speed / torque is conditioned, a set speed / torque value is output from the rate limiter, the rising or falling slope of the speed / torque of the set speed / torque value is limited, the conditioned speed / torque signal obtained enters an integrator for speed / torque integration, and a reference speed / torque value of a drive motor is output, thereby effectively improving the test control accuracy, energy feedback efficiency, and system working stability requirements of a dual-motor electric closed-loop test system for a motor working control mode, thereby ensuring that the speed and torque control accuracy are improved in a transmission powertrain test, thereby ensuring the accuracy and reliability of the test results.

The invention discloses a data analysis and management method, which belongs to the technical field of data processing, and comprises the following steps: S1, obtaining communication protocol content when a current data packet is transmitted, the communication protocol content comprising a source port number and a destination port number; s2, determining a network session random number and a congestion random number according to the communication protocol content, and generating a protocol content set; and S3, when the current data packet is transmitted, completing data transmission by using the protocol content set. According to the congestion avoiding algorithm, the size of the sending window can be dynamically adjusted according to the network condition, so that network congestion is avoided, the stability and reliability of data transmission are greatly improved, network resources can be more reasonably distributed through the congestion avoiding algorithm, and unnecessary bandwidth waste and delay are reduced.

The invention discloses a sugarcane field soil nutrient rapid detection and analysis device in the technical field of sugarcane field soil detection.The sugarcane field soil nutrient rapid detection and analysis device comprises a vehicle body, a controller and a data transmitter, the controller and the data transmitter are both arranged in the vehicle body, the controller is electrically connected with the data transmitter, a working cavity is formed in the vehicle body, and a first workbench is arranged on the side wall of the working cavity; the top of the working cavity is fixedly connected with a telescopic rotating assembly, the bottom of the telescopic rotating assembly is fixedly connected with a second workbench, the top of the working cavity is fixedly connected with a plurality of detection assemblies corresponding to the first workbench, the top of the working cavity is fixedly connected with a plurality of cleaning assemblies, and the top of the working cavity is fixedly connected with a plurality of grinding assemblies. A sampling assembly is arranged on the inner side wall of the working cavity. The sugarcane field soil nutrient detection device is simple and easy to operate, through cooperative work of the cleaning assembly, the grinding assembly, the detection assembly and the sampling assembly, sampling detection analysis is conducted after a sampling area is cleaned, and therefore sugarcane field soil nutrient detection is rapidly, efficiently and accurately completed.

The present invention relates to a field of logistics waybill data processing, and discloses a logistics waybill anomaly detection method, system and storage medium in a data stream environment, which comprises: pre-processing the original waybill data and original trajectory data of the logistics company respectively, and then selecting positive and negative samples; integrating the negative samples and the positive samples to generate a concept drift data set and a non-concept drift data set, simulating the concept drift of the waybill anomaly by the non-concept drift data set, and selecting features that can fully reflect the relationship between the waybill and the trajectory from each data set; processing the selected features by the EFAT algorithm to obtain anomaly detection results. The present invention has fast detection speed, high accuracy, and the ability to resist concept drift.