11results about How to "Exact reproduction" patented technology

There are provided an ultrasound diagnostic apparatus and a control method of the ultrasound diagnostic apparatus which can obtain a cross-sectional image in which a structure of a lesion part is accurately reproduced. An ultrasound diagnostic apparatus generates a cross-sectional image orthogonal to an observation plane on the basis of a video which is acquired during scanning by an ultrasound probe and in which a lesion part is imaged, and includes a pseudo orthogonal cross section generation unit that sets a cross section extraction line passing through the lesion part on one frame image among a plurality of frame images constituting the video, and generates a pseudo orthogonal cross-sectional image orthogonal to the observation plane by arranging, in time series, pixel values on the cross section extraction line in the plurality of frame images; and a pseudo orthogonal cross section deformation unit that non-rigidly deforms the pseudo orthogonal cross-sectional image in a horizontal direction to generate a normalized pseudo orthogonal cross-sectional image.

This application relates to the field of micro-mechanical component manufacturing technology, and discloses a manufacturing process for a worm gear in a humanoid robot's dexterous hand, comprising: S1, preparing a sacrificial layer template with a three-dimensional negative mold and a micro-anchoring structure using photolithography; S2, conformally depositing a functional surface shell using atomic layer deposition (ALD) and forming corresponding prefabricated physical interlocks thereon; S3, depositing an intermediate bonding layer with a material composition gradient; S4, melting a metal material using additive manufacturing to form a structural body, wherein in S4, the high-temperature molten metal undergoes atomic diffusion to form metallurgical bonds when in contact with the intermediate bonding layer, and simultaneously fills into the prefabricated physical interlocks and solidifies to form a micro-mechanical interlock; and S5, removing the sacrificial layer template. This invention achieves a strong bond between the metal substrate and the ceramic shell through the synergistic effect of metallurgical bonding and micro-mechanical interlocks, producing a heterogeneous composite worm gear that is hard on the outside and tough on the inside, and is precisely formed.

This invention discloses a synchronous update and real-time rendering method based on a tri-dexel model, relating to the fields of computer graphics and CNC machining simulation. First, the workpiece model is initialized, a tri-dexel model is established, and it is converted into voxel data and loaded onto the GPU. During machining, the tri-dexel model is dynamically updated according to the tool path, and the voxel data is synchronized to the GPU. During rendering, a line of sight is projected from the camera to the pixel, and the GPU determines the intersection in parallel. If there is an intersection, the triangular facet is reconstructed and colored; otherwise, the pixel remains uncolored. The synchronous update and real-time rendering method based on a tri-dexel model provided by this invention achieves efficient real-time rendering of high-precision models in dynamic machining, and is applicable to scenarios such as CNC milling and additive manufacturing.

The application discloses a TWS earphone system based on a digital sound production chip, and relates to the technical field of digital sound production, and aims to solve the problem that a single loudspeaker unit is difficult to realize wide sound frequency response in the prior art. The earphone system comprises a main earphone and an auxiliary earphone, and the main earphone and the auxiliary earphone each comprise a control module and a sound production module. The control module at least comprises an antenna. The sound production module at least comprises a digital sound production chip. The digital sound production chip at least comprises a sound production pixel unit and an ASIC module. The pixel array corresponding to the sound production pixel unit is arranged in a symmetrical surround mode, and the ASIC module is arranged in a stacking mode. The main earphone receives an original digital audio signal and sends the original digital audio signal to the auxiliary earphone and a microcontroller. The digital sound production chip realizes stereo surround sound production based on a plurality of quantized digital pulse signals obtained by the microcontroller. The panoramic reconstruction of sound can be accurately realized in a specific audio range, including stereo sound, surround sound, panoramic sound and other sound effects.

The invention discloses a control system of a self-lifting profiling taper transfer printing machine, and relates to the technical field of industrial automatic control and precise transfer printing. And the pressure compensation module is used for carrying out PID (Proportion Integration Differentiation) operation according to the theoretical pressure value of each point on the taper transfer track and the real-time pressure value fed back by the pressure sensor to generate a dynamic pressure compensation instruction so as to keep the transfer pressure constant at different diameters of the conical workpiece. Through the dynamic pressure adjusting module, a pressure planning value is inquired in real time according to the curvature radius of a transfer printing point, PID closed-loop control is carried out in combination with feedback of a pressure sensor, and dynamic self-adaptive constant adjustment of transfer printing pressure at different diameters of a conical workpiece is achieved; therefore, the process problems of different transfer printing depths, local loss or ink overflow and the like caused by pressure fluctuation are effectively solved, and the uniformity and consistency of transfer printing quality are remarkably improved.

The application discloses a kind of unmanned aerial vehicle wave measuring system reliability test platform of dual-mode wave simulation, comprising: water tank type wave simulation system, wind making system, support and reversing system, column type wave simulation system and test environmental parameter acquisition system;Water tank type wave simulation system is used to simulate the wave condition of small wave height range required by unmanned aerial vehicle wave measurement, column type wave simulation system is used to simulate the wave condition of large wave height range, by support and reversing system, the wind field of wind making system can be selectively adjusted to act on the first test area above water tank type wave simulation system or act on the second test area above column type wave simulation system.The test platform can safely, economically and controllably simulate sea state conditions, effectively and comprehensively cover the wave height range of target sea state, and can collect wave true value data and unmanned aerial vehicle wave measurement data to complete the quantitative verification of unmanned aerial vehicle wave measurement system reliability.

This invention relates to the field of clothing design technology, specifically to a computer-aided clothing design method and system. The method includes acquiring all operation information and original clothing parameters from user actions on the computer-aided design interface; identifying the clothing modification area and modification parameters operated by the user based on all operation information and original clothing parameters; performing regional structure analysis on the user-operated clothing modification area to obtain the modification impact area; performing a fitting simulation on the clothing modification area based on the modification impact area and modification parameters to obtain qualified simulated fitting parameters; and adjusting the user-operated clothing modification parameters based on the qualified simulated fitting parameters to obtain the clothing design parameters. The purpose of this invention is to solve the problems of inaccurate fabric simulation and system delays in existing design methods, which lead to extended clothing design time and limited designer creativity.

This invention proposes a method and apparatus for establishing a three-dimensional sandstone probabilistic volume. The method includes: integrating a well seismic database; constructing a three-dimensional structural framework model; converting the time-domain seismic data volume into a depth-domain seismic data volume; extracting target seismic attributes according to preset rules; sampling the target seismic attributes into the three-dimensional structural framework model; using a preset neural network model to perform multi-attribute clustering and fusion of the seismic attribute values ​​of the three-dimensional structural framework model to establish a sedimentary unit model; calculating the variation function between sandstone content data for each partition of the sedimentary unit model; and using the Kriging algorithm for interpolation to predict the sandstone content at unknown points, thereby obtaining a three-dimensional sandstone probabilistic volume model. This invention establishes a multi-type, multi-attribute fused three-dimensional sandstone probabilistic volume. By assigning probability values ​​to each grid, it constrains the value type of reservoir facies and the value magnitude of reservoir parameters, providing reliable trend constraints for geological modeling of low-well-control and highly heterogeneous reservoirs.

This invention relates to the field of flange bolt hole centering technology, specifically a device for high-precision reproduction of the center of bolt holes in thick flanges. The device includes a centering main frame that can be inserted into the bolt holes of the flange body, a target head component fixedly mounted at the top of the centering main frame, with a target center for measurement at the top center of the target head component, and a lifting component movably disposed axially inside the centering main frame. This invention provides high-precision bolt hole center coordinates, ensuring the processing accuracy of prefabricated flange pipe sections from the source, completely avoiding the occurrence of "misaligned holes" during on-site installation, improving installation efficiency, ensuring the sealing and safety of equipment connections, and reducing the huge costs and project delays caused by modifying or scrapping pipe sections.

A dynamic analysis method for the reflectance of vitrinite in continental hydrogen-rich shale based on normally distributed activation energy is proposed for oil and gas exploration and development, solving the problem that the existing Easy%Ro model is not suitable for the evolution analysis of vitrinite in continental hydrogen-rich shale. This invention includes: S1, a calibration method for the dynamic model of reflectance of vitrinite in continental hydrogen-rich shale; including a calibration method for the reaction dynamics model of vitrinite in hydrogen-rich shale based on in-situ thermal evolution simulation experiments or a calibration method for the reflectance dynamics model of vitrinite in hydrogen-rich shale based on paleothermal evolution history; S2, a forward modeling prediction method for geothermal evolution history based on the reflectance dynamics of vitrinite in continental hydrogen-rich shale. This invention establishes the SL_Ro model by obtaining data from in-situ thermal evolution experiments, which is more suitable for describing the reflectance evolution process of vitrinite in continental hydrogen-rich shale compared to the traditional Easy%Ro analysis method based on discrete distributed activation energy chemical kinetic models and exponential conversion relationships.

The present application relates to the field of artificial intelligence and simulation technology, and specifically provides a simulation verification method and device for body data, electronic equipment and storage medium, aiming at solving the problem that the body data of the robot obtained by simulation is difficult to apply to control the robot to improve the operation precision of the robot. For this purpose, the simulation verification method for body data of the present application comprises: generating multiple body operation trajectories based on scene information and agent information by using a video generation model; using a playback method of a simulation platform, performing scene replication processing based on the scene information, the agent information and the multiple body operation trajectories to obtain multiple actual execution trajectories of the agent in the simulation scene; verifying the multiple actual execution trajectories in the simulation scene to obtain multiple verification results corresponding to the multiple actual execution trajectories one by one; performing data validity evaluation on the multiple verification results, and obtaining the correlation between data quality and strategy performance according to the data validity evaluation result.