1288results about How to "Reduce mistakes" patented technology

The invention discloses an end-to-end planning method fusing mixed trajectory representation and curriculum reinforcement learning. The method comprises the following steps: constructing a discrete-continuous mixed representation end-to-end pre-training network; constructing a course strengthening fine tuning framework based on interactive deduction; and designing a hard and soft constraint coupled hierarchical course award mechanism. According to the method, a discrete intention and continuous residual error coupling mixed trajectory characterization mechanism is introduced, and on the basis that a driving intention is quickly locked by using discrete primitives, subgrid-level geometric correction is performed on a coarse-grained trajectory through parallel regression branches. According to the invention, on the premise of not increasing the complexity of the search space, accurate trajectory planning with both long-time-sequence intention consistency and dynamics smoothness is realized. According to the method, the reinforcement learning training efficiency is effectively improved, catastrophic forgetting of a long-tail risk scene is prevented, a safety boundary is established in a strategy planning decoder, and the robustness and decision-making ability of an automatic driving system under extreme working conditions are improved.

The invention discloses a low-overlapping-rate point cloud registration method based on topology-metric decoupling, and belongs to the technical field of computer vision and three-dimensional reconstruction, and the method comprises the steps: scanning an object through a three-dimensional laser scanning collection terminal, collecting point clouds at two different angles as a source point cloud and a target point cloud, and achieving high-robustness registration in a difficult scene with an extremely low overlapping rate; according to the method, through the asymmetric association strategy, the zero solution problem under the low overlapping rate is solved through the one-way matching union set, and the recall rate is remarkably increased; meanwhile, through a DGTG geometric pruning and probability manifold optimization mechanism, a voxel quantization error is eliminated by using anisotropic covariance and Lie algebra iteration, a translation error and a rotation error are greatly reduced, and a precision bottleneck caused by voxelization is effectively broken through. According to the method, the existence of a solution can be ensured under the condition that the overlapping rate is extremely low, voxel quantization errors can be eliminated through manifold optimization based on covariance, and high-precision and high-efficiency registration of low-overlapping-rate point clouds is achieved.

The invention discloses a building pipeline intelligent flaw detection and leakage positioning system, which relates to the technical field of building pipeline detection and comprises a data acquisition module, a multi-modal fusion module, a defect identification module, a leakage positioning module, a digital twinborn module, a health prediction module and a decision control module. The data acquisition module is used for deploying multiple types of sensors along a building pipeline, acquiring acoustic emission signals, infrared thermal imaging images, pressure fluctuation data and fluxgate detection signals in a running state of the pipeline, and outputting original sensing data; the multi-modal fusion module is connected with the data acquisition module and is used for performing feature extraction on the original sensing data, constructing a multi-modal feature vector, dynamically adjusting each modal weight based on environmental parameters and outputting a weighted fusion feature vector; and the defect identification module is connected with the multi-modal fusion module and is used for inputting the weighted fusion feature vector into a deep neural network model.

The invention discloses a server test environment guarantee method and system based on dynamic simulation, a storage medium and computer equipment. The method comprises the steps that the air inlet temperature, real-time power consumption and heat dissipation strategy signals of a tested server and the actual environment temperature of an incubator are collected in real time; dynamically setting the temperature of the air inlet of the tested server as the target environment temperature of the incubator, and calculating the real-time temperature deviation between the actual environment temperature and the target environment temperature; if the real-time temperature deviation exceeds a preset threshold value, a dynamic PID control algorithm is triggered, a basic control quantity is obtained through calculation according to the real-time temperature deviation through the dynamic PID control algorithm, a dynamic compensation quantity is obtained through calculation according to the target environment temperature, the real-time power consumption and the heat dissipation strategy signal, and the heat dissipation strategy signal is obtained based on the basic control quantity and the dynamic compensation quantity. Generating a temperature control instruction of the incubator; according to the temperature control instruction, a refrigerating or heating device of the incubator is dynamically adjusted so as to guarantee the test environment of the tested server.

The utility model discloses a welding H-shaped steel beam positioning and drilling device which comprises a bottom plate, a stopping plate is fixed to one end of the top of the bottom plate, two mounting plates are fixed to the other end of the top of the bottom plate, transverse grooves are formed in the two sides of the top of a fixing plate, and inclined grooves are formed in the two sides of one end of the top of the fixing plate. First rolling wheels are arranged in the transverse grooves in a rolling mode, connecting rods are rotatably connected to the tops of the first rolling wheels, second rolling wheels are rotatably connected to the tops of the two connecting rods, and moving plates are arranged at the ends, close to the stopping plate, of the two mounting plates; clamping plates are fixed to the faces, close to each other, of the two movable plates. According to the H-shaped steel beam drilling device, the effect of clamping and fixing the H-shaped steel beam in the drilling process of the H-shaped steel beam is achieved, through linkage of the mounting frame and the connecting rod, the cost of additionally needing a driving device to fix the H-shaped steel beam is saved, and the energy-saving and environment-friendly effects are achieved.

The invention belongs to the technical field of swivel bridge detection, and particularly relates to a swivel bridge horizontal alignment detection device which comprises a mounting seat fixed to the upper end of an abutment, a controller is fixedly connected to the side wall of the mounting seat, and two guide boxes are symmetrically and fixedly connected to the upper side wall of the mounting seat. After the swivel bridge construction is completed, mechanical contact detection is arranged on the abutment, compared with a detection assembly arranged between two swivel bridges which are spaced by four meters, a fixed and accurate mounting reference can be provided for the detection device by means of a stable structural foundation of the abutment, and a detection structure does not need to be arranged between the bridges which are spaced by four meters; the problems of inconvenient operation, large assembly fixing difficulty and the like caused by cross-interval installation are avoided, the bending deformation of the detection rod due to the gravity of the detection rod can be effectively avoided, and the detection precision is guaranteed from the installation reference and the detection structure.

The utility model relates to the technical field of steel wire automatic forming machines, in particular to a full-automatic steel wire wavy line forming machine which comprises an installation frame, a line pressing assembly is arranged at the bottom of the installation frame, and an extension module is arranged on the side face of the installation frame. The full-process automatic production of the wavy line formed by the steel wire can be completely realized, each part of the machine is simple and practical, the machine has the characteristics of low cost and high efficiency, the labor cost is saved, the risk of industrial injury is avoided, the machine is an advanced specialized machine, the driving motor is used as a power source, and the production cost is reduced. The driving motor drives the first gear and the second gear to rotate through the transmission structure, then conveying of the steel wire and forming of the wavy line are achieved, and the straightness of the steel wire in the conveying process and the regular shape of the formed wavy line are guaranteed through arrangement of the first straightener and the second straightener.

The invention discloses a marine main engine cabin entering simulation method and system based on multi-view measurement. The method comprises the following steps: acquiring cabin space depth image information through multiple view angles, constructing cabin environment three-dimensional point cloud data, and unifying multi-view angle point clouds to the same global coordinate system based on camera calibration; performing accurate fusion on the multi-view point clouds by adopting a point cloud registration algorithm which introduces a dynamic weight and a local rejection mechanism, and extracting a boundary of an effective space of a cabin by utilizing an alpha-shape algorithm; motion trail modeling is carried out on the main engine cabin entering process, meanwhile, rapid real-time calculation of the minimum gap between a main engine envelope body and a cabin boundary is achieved by constructing a gridding distance field of a cabin space, and therefore whether the risk of collision or insufficient space exists in a given cabin entering path of a main engine or not is judged. According to the invention, high-precision, high-efficiency and high-real-time host entry space verification can be realized in a complex and narrow in-cabin environment, and reliable technical support can be provided for optimization and decision-making of a marine host entry scheme.

The invention discloses an aircraft target tracking method and system under an aerospace background, and a computer program product, relates to the technical field of target tracking, and solves the problems of large prediction error, low tracking precision and track matching failure caused by strong maneuverability of an aircraft target under the aerospace background. Acquiring a detection frame set; outputting a prediction trajectory set based on the IMM model; based on first-stage association of a Hyper-Hungarian trajectory association strategy, a hypergraph model is used for matching a high-resolution detection frame set and a prediction trajectory set, for a successfully matched trajectory, the trajectory is updated, and for a detection frame which is not successfully matched, the trajectory is initialized as a new trajectory; on the basis of second-stage association of the Hyper-Hungarian trajectory association strategy, re-matching the trajectory which is not successfully matched with the low-score detection box set, updating the trajectory for the trajectory which is successfully matched, and marking the trajectory which is not successfully matched as a lost state.

The invention relates to the technical field of semiconductor devices, and discloses a wide bandgap power semiconductor device and a preparation method thereof. The method comprises: providing a substrate layer of a first conductivity type; forming a first doped region which is deep into the substrate layer and comprises a plurality of doped layers which are sequentially nested from outside to inside, wherein the doping concentrations of the plurality of doped layers are sequentially increased from outside to inside; forming a second doped region in the doped layer on the innermost side of the first doped region; forming an isolation layer on the first surface; forming a control electrode on the isolation layer; forming a first electrode on the first surface; a second electrode is formed on the second surface of the substrate layer. According to the invention, the first doped region which is located between the substrate layer and the second doped region and has the doping concentration gradually increased from outside to inside is formed through a mode of multiple times of ion implantation, so that transverse electric field constraint is constructed, transverse depletion of a channel region and a short channel effect under the condition of large voltage are inhibited, the channel width is reduced, and the performance of the device is improved. And the device performance and reliability are improved.

The invention relates to a bridge inspection method and system and a computer readable storage medium. The inspection method of the bridge comprises the following steps: receiving an inspection task, and driving the inspection device according to the inspection task, so that the inspection device travels along the running guide rail of the bridge; obtaining a sequence image of the bridge surface acquired by the image acquisition assembly; identifying the disease type of the bridge based on the sequence image; and determining geometric feature parameters corresponding to the disease type according to the disease type of the bridge, and determining the severity level of the disease type based on the geometric feature parameters. According to the bridge inspection method, automatic grading evaluation of bridge apparent diseases is facilitated, errors caused by manual judgment are reduced, and the accuracy degree of disease detection is improved.

The invention discloses a high-density electrical method infiltration surface three-dimensional inversion method based on multi-source data collaboration, and the method comprises the steps: constructing a multi-source heterogeneous data collection network, synchronously obtaining four types of data of a dam body monitoring region, and achieving the unification of coordinates and time scales of the four types of data through a space-time registration algorithm; establishing a multi-scale coupling model; on this basis, a deep learning inversion framework fused with physical constraints is developed; an inversion result is optimized through a self-adaptive dynamic correction module; and outputting the corrected three-dimensional distribution model of the infiltration surface. According to the method, a resistivity-moisture content-pore structure-fluid pressure quaternary coupling equation is macroscopically established through a multi-scale coupling model, pressure data are obtained in real time in combination with optical fiber sensing, pressure and pore deformation are correlated through a mesomechanical equation, a physical mechanism is fully fused, resistivity deviation caused by pressure is eliminated, and the resistivity is measured. The three-dimensional form of the infiltration surface is more suitable for the real situation, and an accurate position basis is provided for dam body permeability stability evaluation.

The utility model provides an automatic detection device for a power-assisted gear of an automobile steering device, and the device comprises a machine which is provided with a feeding module used for feeding and conveying a gear shaft, an outer diameter detection module used for detecting the outer diameter of the shaft end of the gear shaft, a run-out detection module used for detecting the run-out of the gear shaft, and a detection module used for detecting the run-out of the gear shaft. The inner diameter detection module is used for detecting the inner diameter of a hollow channel of the gear shaft, the marking module is used for conducting laser marking on the gear shaft, and the discharging module is used for discharging and stacking the gear shaft. In this way, the shaft end outer diameter of the gear shaft, the inner diameter of the hollow channel, run-out tolerance detection and the like are integrated, and the working efficiency is effectively improved.

The application discloses a kind of high-pressure fuel filter prediction model construction method and flow prediction method, including two prediction models, method specifically includes: using computational fluid dynamics method carries out fluid dynamics simulation calculation to high-pressure fuel filter, constructs working condition sample data set;The size of filter hole, quantity, filter working pressure, fuel viscosity and filter pressure drop are used as input variable, and filter flow is used as output variable, two new high-pressure filter general nonlinear flow prediction models are established using artificial neural network and regression prediction method respectively, the flow characteristics of different models of filter in working interval can be accurately predicted using the neural network prediction method proposed in the application at any working condition point, and the error is low;The flow of different models of filter under different conditions can be quickly and accurately obtained, the accuracy meets the engineering needs, while greatly shortening the experimental time and calculation time, saving design cost.

The utility model relates to electric motor car technical field discloses a kind of electric motor car frame accessory machining clamps, including base, the top left side of the base is fixedly connected with first mounting block, the top right side of the base is fixedly connected with second mounting block, the left side of the second mounting block with the right side of the first mounting block is all installed with fourth shaft rotating table, the middle part of the fourth shaft rotating table is provided with mounting plate, the top end middle part of the mounting plate is installed with fixture quick clamping exchange plate, the top left end of the fixture quick clamping exchange plate is all provided with fixed clamp, the top end back side of the fixed clamp is provided with connecting block.In the utility model, two fourth shaft rotating tables are installed stably first, mounting plate is placed and fixed, electric motor car frame accessory is put into fixed clamp and engaged, when replacing fixed clamp, fixture quick clamping exchange plate can be disassembled, this process realizes the quick clamping of electric motor car frame accessory, and improves efficiency.

The utility model discloses a canvas is spun with cotton feed adjusting device, including frame, cotton feed board and cotton feed roller, one end of cotton feed board is fixed on the frame through the pin shaft, cotton feed board swings with the pin shaft as fulcrum, the frame is set up with the through slot, and the inside of through slot is provided with the connecting rod of through -going, and one end of connecting rod is hinged with cotton feed board through the hinge, the inner wall of through slot is seted up with the limiting slot. In the utility model, by adopting the mode of servo motor drive adjusting screw rod and moving, replace the manual rotation screw and adjust the interval of the holding area of cotton feed board and cotton feed roller, can greatly improve the adjustment accuracy, reduce the error, ensure that the holding area of cotton feed board and cotton feed roller is invariable between the holding area between cotton feed board and cotton feed roller under the long -time work, can stably transport the sliver to the capture range of the carding roller, improve the carding efficiency of carding roller.

The utility model relates to the technical field of building wall waterproof structure, specifically is a kind of wall flashing element connecting structure, including wall, the horizontal purlin of being located in wall upper and the sandwich panel being connected with horizontal purlin, the outside of wall is provided with outer decorative layer, the bottom end of sandwich panel is connected with the "Z" shape flashing support, the end of flashing support away from sandwich panel is connected with flashing plate, and the upper end of flashing plate is connected with flashing support by fastener, and the bottom end of flashing plate extends to the outside of outer decorative layer. By first flashing support installation in the bottom end of sandwich plate, and flashing plate can be in the size measurement when wall starts to build, after measuring, it is processed again by factory, to reduce error, and after wall is completely built, it is installed again, since the installation position of flashing support and flashing plate is in the outside of wall, the problem that installation is inconvenient due to insufficient operation space is avoided.

The present application belongs to the technical field of concrete preparation detection, and particularly relates to a concrete aggregate water content detection device, which comprises a base and a rack installed above the base. A controller is installed on the side wall of the rack. The device further comprises a through hole opened in the top of the base, a support seat slidably connected inside the through hole, and a weighing mechanism installed inside the through hole for supporting the support seat. A flat hopper is arranged above the base and located on the side of the feed end direction of the support seat. The rack is provided with an adjusting drive mechanism for driving the vertical movement of the flat hopper. A microwave detection unit is arranged on one side of the flat hopper. The present application can perform online detection of the water content of concrete aggregate, improve the detection accuracy by combining weight detection and thickness control, reduce single detection interference error by cross verification of multiple sensing data, and improve data reliability to support subsequent dynamic batching.

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

The invention aims to provide a gas turbine blade unstable flow visualization testing method, and belongs to the technical field of gas turbine experimental testing. Comprising the following steps: inputting boundary conditions and geometric conditions of a calculation model; numerical simulation flow field data under the condition are obtained through CFD calculation; if yes, the next step is carried out, and if not, a higher-quality grid is generated and returned to the encrypted grid, and CFD numerical simulation calculation is carried out again; selecting a proper resolution ratio based on an actual demand; generating a data source quantity and obtaining CFD calculation data according to the data source quantity; and outputting the three-dimensional transient visual flow field at the moment obtained by the checked high-precision CFD numerical simulation. The actual working condition of the gas turbine blade can be simulated, the test error of an actual instrument under the severe working condition is avoided, and the test difficulty is reduced. The precision of CFD numerical simulation is optimized, and the error is reduced, so that the credibility of the three-dimensional visualization cloud picture is improved.

This application discloses a temperature detection method, device, temperature controller, computer storage medium, and product, relating to the field of temperature control technology. The temperature detection method includes: determining temperature compensation parameters for the target temperature controller during temperature detection based on measured temperature data detected by the target temperature controller within a preset operating period; obtaining the temperature to be compensated detected by the target temperature controller; and performing temperature compensation based on the temperature compensation parameters to obtain a corrected temperature. This application can improve the accuracy of temperature detection.

The present application relates to large aperture optical machine structure engineering analysis technical field, especially to a kind of gravity unloading point layout method of large space mirror, comprising the following steps: S1: the finite element analysis model of space mirror is established, and the discrete node surface shape data and unloadable point coordinate data are exported.S2: surface shape fitting is carried out, and surface shape accuracy is calculated.S3: its surface shape residual elevation diagram is drawn, and high residual point is identified.S4: the unloadable point coordinate of space mirror is obtained.S5: space mirror is supported using unloadable point, and its degree of freedom is constrained;Finite element analysis model is updated, and step S2 is repeated, and surface shape accuracy is calculated.S6: whether surface shape accuracy meets the requirements is judged, if not, then repeat step S3 to step S5;Until meet the requirements.The present application has the advantages that, through the gravity unloading point layout of space mirror, gravity unloading point can be more accurately fixed in flexible support mode or the like during processing, and the influence of gravity on surface shape accuracy is reduced.

The invention discloses a full-process visual monitoring and intelligent management method for a glass bracket production line, and relates to the technical field of industrial quality control, and the method comprises the steps: carrying out the continuous image collection of all stations of the glass bracket production line through an image collection unit, and constructing a full-process image data sequence; detecting the size of the glass bracket by using the qualified glass bracket size image database, and judging whether the size is abnormal or not; further performing defect detection on the glass bracket with the normal size, and determining whether an abnormal defect exists or not through pixel value difference analysis; and finally, summarizing the glass brackets with abnormal sizes or defects and related information thereof, and generating a visual quality report, so as to quickly position problems and optimize the production process. The comprehensive monitoring and intelligent management of the glass bracket production process are realized, and the production efficiency and the product quality are improved.

This invention relates to the field of agricultural intelligent equipment and machine vision technology, and discloses a method for weed detection and growth point localization based on shared features. The method constructs a collaborative dataset containing weed detection labels and growth point labels, utilizes a shared feature extraction network to extract multi-scale features, and sets detection task branches and growth point localization branches in a unified feature space to achieve joint modeling of weed detection and growth point localization. Then, adaptive positive sample selection is performed based on the joint cost between candidate sample points and labeled growth points, and joint training is conducted using detection loss, growth point localization classification loss, and growth point localization regression loss. During the inference stage, the method outputs weed detection results and growth point localization results, and generates target point information. This method can reduce redundant calculations and error cascading in the multi-stage processing, and improve the accuracy of growth point localization and the stability of target point output in complex farmland scenarios.

This invention relates to a method for locating characteristic defects in cadmium zinc telluride (CZT) samples and a method for preparing CZT samples. The location method includes the following steps: determining the positions of internal feature points on the sample under an infrared transmission microscope; establishing marking features on the sample surface using FIB-SEM; and determining the relative position of the internal feature points projected onto the sample surface by establishing a geometric relationship between the virtual position of the internal feature points projected onto the sample surface and the marking features. The preparation method uses these relative positions to prepare CZT samples. The location method of this invention can simply and effectively establish the positional relationship between internal feature points and surface features, accurately locating internal defect features in CZT samples. This allows for convenient and rapid determination of the specific location for preparing transmission electron microscopy (TEM) samples, thus improving the quality of TEM samples.

This invention provides a measuring device. The measuring device includes: a base with a working surface; a positioning structure movably disposed on the working surface, the positioning structure having a bearing end and a receiving end, the receiving end having a receiving recess; and a measuring structure disposed on the base. The positioning structure has a reference state and a positioning state. When the positioning structure is in the reference state, the end face of the receiving end is in contact with the working surface, and the measuring structure measures the height between the end face of the bearing end and the working surface. When the positioning structure is in the positioning state, the end face of the bearing end is in contact with the working surface, the receiving recess accommodates the non-measuring segment of the sample to be measured, the end face of the receiving end is in contact with the end face of the segment to be measured near the working surface, and the measuring structure measures the height between the end face of the segment to be measured away from the working surface and the working surface. This invention effectively solves the problem of poor efficiency in measuring the sample thickness of a rotational rheometer by operators in the prior art.

The invention provides a surface mount filter temperature characteristic testing device, which belongs to the technical field of electronic component testing and comprises an in-box testing unit and a main control and data acquisition system. The in-box test unit comprises a multi-station test fixture system, a high and low temperature control system and an automatic switch switching system; the multi-station test fixture system comprises a PCB circular plate; the automatic switch switching system comprises a signal input interface, a signal output interface, an upper layer radio frequency switch and a lower layer radio frequency switch. And the master control and data acquisition system is in communication connection with the high and low temperature control system. According to the integrated PCB test module, the multiple radio frequency switches and the transmission lines with the same length, the uncertainty and loss of radio frequency paths are reduced to the maximum extent, and the consistency and accuracy of test data are ensured. The invention further discloses a testing method of the surface mount filter temperature characteristic testing device.

The utility model belongs to temperature monitoring technical field discloses a kind of lithium battery temperature real-time monitoring equipment, including shell, shell inner wall is connected with lithium battery group, the center position of lithium battery group one end is connected with heat conduction block, and the outer end of lithium battery group is connected with multiple ducts, the scheme is in lithium battery group outside along the length direction of battery Multiple fitting ducts are laid out, and heat-conducting oil is filled in duct interior, the joint action of heat-conducting oil and heat block, the heat generated by battery surface local is quickly, evenly guided to heat conduction block and thermistor, the efficient real-time monitoring of whole battery temperature is realized, the structure can greatly improve the response speed to local overheating phenomenon, reduce the error caused by point measurement delay or measuring point offset, with fast thermal response, high thermal coupling degree, strong adaptability Advantage, significantly enhance the safety and stability of lithium battery system under complex working conditions.

The utility model relates to a kind of stator inspection tool, including workbench, base, stator and core rod, the base is arranged on the workbench surface, the core rod is movably set in the stator, the tool further includes fixed part, detection part, the fixed part and the detection part are mutually spaced and set in the base;The tool further includes driving assembly and moving assembly, the driving assembly and the moving assembly are all set in the base and jointly act so that core rod moves relative to the stator.The utility model tool is fixed by setting fixed part and detection part, while the core rod is inserted into the cavity of stator, the data generated after inspection can be detected in real time, which is convenient for workers to repair;By setting driving assembly and moving assembly, the core rod is rotated synchronously while moving in the stator by connecting rod, which improves the degree of automation, effectively reduces the error caused by manual operation, and further improves the stator precision and quality.

This invention provides a contract review assistance system, method, and storage medium. By constructing a four-layer architecture of "main agent - sub-agent - toolset - data resource layer," intelligent processing of contract review and related business scenarios is achieved. This architecture not only improves the flexibility and collaborative efficiency of task processing but also reduces reliance on manual intervention and error rates. Thus, it achieves an efficient, accurate, and structured review process through intelligent means, thereby improving the processing efficiency of contract review and related business scenarios. This solves the technical problem that existing contract review methods cannot fully meet the core review needs of the contract marketing and risk control domains, leading to low contract review efficiency.