7results about How to "Ensure data integrity" patented technology

The invention relates to the technical field of high-voltage dry-type reactive power compensation, and discloses an underground mining high-voltage dry-type reactive power compensation device. Comprising a dry-type iron core filter reactor module, a high-voltage self-healing parallel capacitor module, an intelligent measurement and control protection integrated module, a heat dissipation dustproof adaptive adjustment module, a high-voltage insulation wiring terminal group, a fault positioning and early warning module and a remote monitoring communication module. All the modules are integrated into a whole through modular design. According to the invention, a modular integrated design is adopted, each functional module is uniformly arranged in the mining explosion-proof shell to form a uniform grounding loop, the shell meets the explosion-proof standard, the protection grade reaches IP65, and the high-grade insulation design of each module is matched, so that the underground high-dust, high-humidity and explosive environment is effectively adapted; the problems that a traditional device is large in potential safety hazard and poor in adaptability are thoroughly solved, and the safety and reliability of the device are remarkably improved.

The invention relates to the technical field of modeling and simulation, in particular to a digital modeling and simulation analysis method and system for petroleum and natural gas engineering, and the method comprises the following steps: obtaining elevation coordinate points, screening jump points, repositioning a path line network to recognize an abnormal section, and executing simulation to generate an analysis result. According to the method, geometric sudden change points are recognized by establishing an elevation change anomaly map, deviation point positions are corrected by combining direction vector analysis, the spatial modeling precision is improved, the running state of a target point is dynamically recognized by extracting pressure and temperature change rates in continuous time periods, the response capability of a model to running state anomaly is enhanced, and the accuracy of spatial modeling is improved. The dynamic selection and boundary loading process of the simulation unit is driven through the judgment result of the interference section area, the space accuracy and boundary adaptability of simulation task configuration are achieved, the simulation process is presented in a unified mode in a node track change mode, and the analysis result is archived. And the visuality, the dynamism and the data integrity of digital modeling of the petroleum and natural gas pipeline are ensured.

The invention relates to the technical field of databases, and discloses a database table foreign key association reconstruction method and device. The method comprises the steps that columns of multiple target data tables are combined in pairs to generate column pairs, and a first set is constructed based on all the column pairs; pruning the first set based on the target unique key through the target large language model; constructing a second set based on column pairs reserved after pruning; performing foreign key association detection on the column pairs in the second set through the target large language model to obtain a detection result; traversing all the column pairs with foreign key association, and deleting at least one column pair with foreign key association through the target large language model under the condition that foreign key conflicts exist between the column pairs so as to eliminate the foreign key conflicts; under the condition that foreign key conflicts do not exist between the column pairs, foreign key association is reconstructed for the multiple target data tables. By adopting the method, the accuracy and generalization of foreign key association reconstruction of the database can be improved, and the reconstruction quality is improved.

The invention discloses a trusted digital twin cloud native network architecture based on a block chain. A virtual twinborn entity is constructed for a physical entity through a digital twinborn technology, and a cloud native network is adopted to bear operation of the digital twinborn entity, so that state perception, control and optimization of the physical entity are more convenient and effective; different components (such as data and function modules) of the digital twin are deployed in different positions of a cloud native network in a distributed architecture, so that dynamic scheduling and efficient utilization of resources are realized. And in combination with a block chain technology, a trusted security guarantee is provided for task scheduling, component interaction and data sharing of the digital twin through an intelligent contract and a distributed account book mechanism. The block chain ensures data integrity and operation transparency in the task execution process, and provides reliable support for resource allocation, authority verification and operation traceability in task scheduling. Benefited from the combination of the cloud native and the block chain, the method not only has the capability of dynamically adjusting the task execution strategy, but also can effectively guarantee the security and transparency of system operation, thereby realizing more intelligent and efficient operation.

The invention discloses a UDS-based vehicle ECU security access and firmware online upgrading method. The method comprises the following steps: establishing a diagnosis communication link with a target ECU; executing a security access unlocking process based on an external configurable security algorithm component by diagnosing the communication link; after the security access is unlocked, the target ECU is controlled to enter a programmable session state and complete storage area preparation by diagnosing a communication link; analyzing the firmware file to be upgraded into a plurality of data blocks; sequentially transmitting the plurality of data blocks to a prepared storage area of the target ECU based on the diagnostic communication link; and after the plurality of data blocks are all transmitted and all pass the verification, executing a reset operation for the target ECU. Security access unlocking is executed through an external configurable security algorithm component, and flexible configuration of a security mechanism and compatibility of multiple manufacturers are achieved; and through block transmission verification and a failure retransmission mechanism, the data transmission robustness and the firmware upgrading reliability are improved.

The invention provides a hydropower engineering design data modeling system based on a BPRS method, which comprises a process object enumeration library, a design semantic library, a geometric feature library, a design parameter library, a business process library, a visual modeling module, a data modeling engine, a database structure generation module, a data exchange standard generation module and a collaborative interface module, unification of design data, business processes and system structures is realized, and multi-specialty collaboration, parameter association, semantic modeling and automatic generation of data standards are supported. According to the method, efficient collaboration, parameterized management, semantic modeling and standardized generation of hydroelectric engineering design data can be realized, the problems of data islands, flow breakage, semantic deficiency and the like in traditional design are solved, and the design efficiency and the intelligent level are improved.

This invention discloses a condition monitoring and control system for a permanent magnet motor driven by an oil drilling rig, relating to the field of permanent magnet motor condition monitoring technology. It includes a data acquisition and construction module, a data preprocessing and feature extraction module, a dynamic monitoring and trend analysis module, a deep learning evaluation module, and a fuzzy control and real-time compensation module. The data acquisition and construction module first acquires real-time operating data of the inverter during operation through data acquisition equipment. The acquired real-time data is stored in a time-series format, and a dataset is established to provide complete and accurate basic data for subsequent analysis and model evaluation. This invention improves the stability, reliability, and energy efficiency of the permanent magnet motor driven by the oil drilling rig through real-time data acquisition, deep learning evaluation, fuzzy control optimization, and error compensation, adaptively adjusting the dead time, reducing short-circuit risk, energy loss, and harmonic damage, optimizing system performance, and improving operating efficiency.