10results about How to "Ensure credibility" patented technology

This invention belongs to the field of rail vehicle technology. It proposes a method and system for adjusting the alignment of workpieces during the intermediate stage of bogie welding. Based on the design 3D model of the bogie workpiece and the process scaling requirements, key dimensions are selected and adjusted to construct a virtual intermediate model. Feature points are collected from the key feature surfaces of the virtual intermediate model to obtain reference values ​​for each feature point. A 3D scan of the actual bogie workpiece during the intermediate welding stage is performed to acquire point cloud data. Feature points are collected and processed from the corresponding key feature surfaces of the point cloud data to obtain the actual values ​​of each feature point. By comparing the reference values ​​and actual values ​​of each feature point, the deviation of each feature point is obtained. For the key dimensions of the bogie workpiece, a scribing weight mechanism is introduced to assign weight priorities to each key dimension. Based on the deviation of each feature point and the weight priorities, the position of the baseline of the key feature surface is adjusted. This invention achieves a closed-loop process from model adaptation and data comparison to baseline adjustment.

This invention discloses an online method and system for estimating the braking clearance throughout the entire lifecycle of an EMB system, relating to the field of braking technology for EMB systems in autonomous vehicles. The invention includes: acquiring motor current and motor angle signals of the electromechanical braking system during the braking clamping phase; constructing a current-angle regression model based on a Legendre orthogonal basis based on the nonlinear relationship between the motor current and motor angle signals; performing online robust estimation of the parameter vector of the current-angle regression model using a weighted multi-forgetting factor recursive least squares algorithm combined with an adaptive M-estimator and a two-stage estimation strategy; and mapping the parameter estimates to braking clearance estimates. This invention achieves high-precision braking clearance estimation without additional sensors based solely on motor current and angle signals through online self-learning. It maintains excellent robustness and stability under complex operating conditions and long-term operation, making it suitable for engineering applications in EMB systems.

The application discloses a kind of measurement system and method based on phase distribution inversion thin film material cross-scale thermal diffusivity, through unified time base and unified reference phase condition, the cooperative acquisition of macroscopic full-field lock-in observation and microscale scanning observation is realized, and the joint inversion framework of phase distribution matching and scale consistency is established, form the measurement process that can be checked, can be closed loop, to realize the thermal diffusivity of thin film material from micron to millimeter scale range in the same experimental system, efficient, stable characterization, improve cross-scale data consistency and inversion reliability, reduce the error and cost caused by repeated measurement, and enhance the adaptability to interface effect and non-uniform structure influence.For and improve the existing method, it is difficult to consider full-field positioning and microscale effect identification in the same measurement framework, the cross-scale data is not comparable due to the non-uniformity of phase reference, and the inversion stability is insufficient.

The application relates to a fund whole-process digital management and control and on-chain evidence storage method, which comprises the following steps: receiving an account adjustment operation request and analyzing the fund secret level; dynamically calling a corresponding set of security protection parameters based on the secret level; constructing a group behavior baseline model based on a privacy protection mechanism; collecting operation behavior characteristics in real time, and calculating the double-baseline deviation of the operation behavior characteristics from the individual and group baselines; fusing and judging the deviation according to a preset threshold to determine a risk level; executing a graded disposal strategy corresponding to the risk level, and synchronizing whole-process key data to a block chain node for evidence storage. The application realizes the online of the whole process of secret fund account adjustment, the intelligentization of risk research and judgment, and the trustworthiness of operation traces, and achieves the comprehensive effects of improving disposal efficiency, strengthening active risk control, ensuring the consistency of accounts and facts, and meeting the requirements of judicial audit level traceability.

This invention relates to the field of cloud security technology and can be applied to financial technology and other businesses. It discloses a data security sharing method based on a distributed architecture, comprising: treating a data holding institution as an independent node in the system; generating registration information based on the independent node and its local dataset, and storing the registration information on a blockchain; training an initial model and calculating its gradient based on the encrypted local dataset; encrypting the model gradient and uploading it to the system; aggregating and decrypting all encrypted gradients through a secure aggregation protocol to generate an aggregated gradient; updating the initial model based on the aggregated gradient to generate a global model; performing a hash operation on the global model to generate a summary result; controlling the access permissions of the global model through the result summary and smart contracts; authorizing users to call the global model for secure data sharing based on the access permissions; storing the data sharing information in an audit log and writing the audit log to the blockchain.

This invention discloses a data governance and application system and method for construction land approval, supply, and use based on an authorization chain, belonging to the field of construction land data management technology. This invention uses electronic supervision numbers to link approval data, supply data, and ownership change registration data to generate a data chain; it performs time-series and integrity checks on the data chain; analyzes abnormal features in the data chain and analyzes comprehensive problem indicators based on these abnormal features; it corrects the data in the problematic time-series chain; it analyzes the matching of approved and supplied land parcels and generates preliminary matching pairs based on the matching results; it analyzes the confidence index of each preliminary matching pair; it filters the preliminary matching pairs based on the confidence index; it classifies land parcels into idle risk warning levels based on a land idleness sensitivity index; and it divides land parcels into spatial clustering patterns using a local Moran's index, sending the division results to the administrator. This improves data reliability and reduces the risk of misjudgment.

The application relates to an intelligent toy with a child cognitive ability evaluation capability and an evaluation method thereof, and belongs to the technical field of intelligent toys, which comprises a toy body, a function module and a multi-modal sensor array, the toy body is a cuboid base suitable for being gripped by children, and the function module and the multi-modal sensor array are integrated in the toy body. In the application, a standardized cognitive evaluation task is ingeniously embedded in a children's game, rich data are collected in a natural situation by using a highly integrated multi-modal sensor, and the data are converted into scientific evaluation results by a cloud intelligent algorithm, the application solves the problems of a depressing environment, single data and non-sustainable problems in a traditional evaluation mode, realizes evaluation in the form of play, and provides an objective, convenient and professional children's cognitive development tracking and support tool for families and early education institutions.

The application discloses a high-precision three-dimensional vision system based on multi-camera time-sharing acquisition to improve acquisition frequency, and relates to the technical field of three-dimensional vision, comprising: a time-sharing synchronous control module, which is used for generating and outputting a group of trigger signals with precise time sequence offset; an image acquisition unit array, which is composed of at least three spatially distributed image acquisition units, each unit responds to the trigger signal, and sequentially opens its image sensor for image acquisition within a unified system acquisition cycle, and the acquisition windows of each unit do not overlap in time; a time-sharing acquisition cooperative scheduling module, which is used for dynamically solving and assigning the mutually exclusive acquisition window parameters of each image acquisition unit within the acquisition cycle according to scene motion speed, illumination change and system state. The application solves the problem that the existing three-dimensional vision system is difficult to consider high frequency and high precision use scene.

This invention discloses an accounting simulation teaching system and method based on virtual reality and knowledge graphs. The system includes: a virtual reality module for constructing an immersive accounting practice environment; a knowledge graph module storing entities, relationships, and rules constructed based on accounting standards and business logic for logical verification of user operations; and an error handling and reinforcement learning subsystem, which includes: an error recording unit for capturing and storing the error's operational context information when a user operation is determined to be erroneous by the knowledge graph module. This invention has the advantages of strong immersion, real-time and accurate feedback, personalized teaching paths, structured knowledge system, and a trustworthy and collaborative learning process.