6results about How to "Guaranteed immutability" patented technology

This invention discloses a multi-tenant end-to-end data security isolation and control system and method, belonging to the field of vehicle network data security. It aims to solve the problems of easy data crosstalk, discontinuous isolation, unreliable trust benchmarks, and difficulty in compliance traceability in multi-tenant scenarios. The system generates a tenant root identifier (TID) for vehicle enterprise tenants, which, together with the device sub-identifier (DID), forms a tenant identifier chain. This chain is synchronized with a trusted authentication center to establish a vehicle-cloud hardware-level trust root. When the vehicle terminal accesses the system, it completes two-way identity authentication and allocates a dedicated message queue telemetry transmission MQTT topic partition and access permissions according to the TID. The terminal collects time-series vehicle control data and generates encrypted data frames with intrinsic identifiers and checksums for uploading. The access gateway performs dual isolation verification before transparent transmission. Data is forwarded to an independent logical storage partition for isolated storage according to the TID. This invention achieves strong hardware-level isolation, real-time verification, and full traceability throughout the entire end-to-cloud chain, effectively preventing cross-tenant data leakage.

This invention discloses a method, system, and computer equipment for electronic data forensics in police vehicles. The method includes: confirming whether the vehicle's onboard data storage device has read permissions; if read permissions exist, the investigating officer performs bidirectional authentication between the vehicle-mounted forensics equipment and the identity authentication module in the public security platform, activating and authorizing the secure, legal, and operable nature of the vehicle-mounted forensics equipment; if read permissions do not exist, data is directly read from the vehicle-mounted data storage device; and different data integrity checks and extractions are performed based on the two communication protocol types of the vehicle-mounted data storage device. This invention, in police enforcement scenarios, overcomes permission barriers and equipment damage constraints, enabling rapid acquisition and analysis of onboard data.

The application provides a product identification method based on space-time bearing capacity, and relates to the technical field of product production information identification.The method comprises the following steps: generating a target product space-time code of a current product in an initial product production stage; assigning a target commodity code to the current product and binding the target commodity code with the target product space-time code; judging whether the current product embedded with the target commodity code in a product packaging is an external product required in a next product production process in a product circulation stage; if not, recognizing the target commodity code embedded on the product packaging through a user terminal device in a product consumption stage to obtain the target product space-time code, and extracting space-time occupation unit information of each production link of the current product recorded in the target product space-time code.The application generates a target product space-time code based on space-time occupation information of a target product production process, binds the target product space-time code with the target commodity code, realizes unique identification of space-time occupation of the product production process, and provides a basis for space-time bearing capacity evaluation of a product production place.

The application discloses a kind of school canteen special fund use compliance intelligent verification method and system, it is related to financial audit and computer vision technical field.The method includes: obtaining the financial accounting data and business field image data of canteen;Through image recognition technology, the category and component of the dishes distributed by the special fund corresponding window are determined;Combined with the pre-stored recipe database, the theoretical food material consumption data is calculated;Theoretical consumption data is associated and compared with the actual delivery cost recorded in financial accounts;According to the comparison result, compliance verification report is automatically generated.The system includes data acquisition interface, visual recognition unit, recipe database, verification engine and report generation unit for realizing the above method.The application realizes the automation, traceable verification of financial compliance requirements such as "special purpose fund" by fusing multi-modal data and intelligent analysis, changes traditional post-event manual audit into in-process intelligent prevention and control, effectively improves the transparency, accuracy and efficiency of fund supervision.

The invention discloses a motor fault diagnosis method and system fusing order analysis and sparse sensing technologies, and aims at solving the problems that an existing model is poor in generalization ability and lacks interpretability, a vibration signal is resampled into an angular domain stationary signal, and an angle-order spectrum is generated; the method comprises the following steps of: constructing a gate control order Transform diagnosis model consisting of a Transform encoder containing an information bottleneck order gate control module (IB-OG) and a fault classifier, namely embedding the IB-OG module in a self-attention mechanism of the encoder, carrying out sparse screening on input order characteristics by utilizing a built-in microstochastic gate control mechanism, removing redundant noise and reserving key fault characteristics. In addition, class condition domain invariance constraints are introduced into the loss function, and the model is forced to align feature distribution of different working conditions in the same fault class. In conclusion, the diagnosis precision, the generalization ability and the physical interpretability of the model under the complex working condition are remarkably improved.

The application discloses a kind of blockchain security control system accident traceability method and system, by the modification and uploading data record in local traceability chain when each node of blockchain is carried out data modification and upload, using the asymmetric encryption mechanism and transaction traceability characteristics of blockchain, guarantee the unmodifiable and traceability of data, traceability chain can lock accident source data, accurately locate to fault node and then lock modification initiator and account book notary, guarantee the reliability of traceability, second, when accident traceability is carried out in the past, the relevant information of entire blockchain needs to be traced back, blockchain data is more and more miscellaneous with time running, the time complexity of entire information amount is big, possibly cause the jam of communication channel.After introducing traceability chain, after determining accident node by the block header data comparison of traceability chain, only need to call the account book information of accident node to confirm specific accident person in charge, greatly reduce the time cost of accident traceability.