6results about How to "Improve real-time" patented technology

The application relates to a novel power system grid fault feature analysis method, first, four-dimensional data of alternating current side electrical quantity, direct current side conversion parameter, equipment operation state and environmental meteorological parameter are integrated, and the integrated data is subjected to noise reduction, normalization, missing value completion and abnormal value elimination treatment, so that a standardized feature sample set is formed, then, an improved wavelet packet transform is adopted to decompose a transient signal, time domain, frequency domain and time-frequency domain features are extracted, so that a high-dimensional fault feature matrix is constructed, then, a fault feature secondary verification is realized in a mode of combination of cosine similarity and dynamic time warping; meanwhile, a graph convolution network is introduced, fault contribution degrees of each node are calculated in combination of a power grid topological structure and a power flow distribution, a fault source is accurately positioned, a fault propagation path is combed, and a fault influence range is quantified; and the application has the advantages of comprehensiveness, high efficiency, accuracy and strong adaptability.

The application discloses a trajectory similarity judgment method and system, which realizes fast and accurate similarity judgment between trajectories by using corner points of the trajectories, and provides strong support for full use of user motion information. The Douglas-Poke method is used to realize extraction of trajectory corner points (bending points, turning points, etc.), so as to provide basis guarantee for trajectory similarity judgment. Shape features, angle features and geometric features of the trajectories are constructed based on the trajectory corner points, similarity judgment between the trajectories is realized, and a perfect trajectory similarity judgment scoring mechanism is formulated based on the judgment. The method can not only quickly obtain the similarity between the trajectories, but also can get rid of the demand for calculation and memory resources due to large calculation amount in conventional trajectory similarity judgment, and improve the possibility of real-time application of user motion information.

The invention discloses a low-delay inter-core communication system and method, and belongs to the technical field of multi-core processor inter-core communication. The system comprises a dual-core processor, an inter-general processor communication module GPIC and a shared memory, the dual-core processor is connected with the communication module GPIC between the general processor and the hardware transmission interrupt signal, and the shared memory is provided with a data interaction area containing control information and a data storage area. Through system initialization, data interaction areas in the dual-core processor, the GPIC module and the shared memory are configured; in the communication preparation stage, dual cores configure parameters and establish connection; when data are sent, the sending core writes the data into the data interaction area and sends an interrupt signal through the GPIC module; the receiving core reads the processing data and sends a confirmation signal after receiving interruption; and finally completing communication. The communication efficiency and reliability are improved through dual-core cooperation, bidirectional communication is supported, the flexibility is high, and the method is suitable for the fields of industrial control, automotive electronics and the like with high real-time requirements.

The invention relates to a multi-channel phase calibration method and system based on detection target echoes, belongs to the technical field of radar processing, and solves the problem that phase inconsistency of multiple channels of a radar caused by hardware difference cannot be efficiently solved in the prior art. The method comprises the specific steps that a radar system is triggered online to enter a real-time phase calibration mode; the method comprises the following steps: sequentially opening each emission channel of a radar system by using a time-sharing emission mechanism, radiating a radar pulse signal to a detection target, and respectively receiving an echo signal of the detection target to obtain an echo phase of each emission channel; performing phase calibration inversion based on each echo phase to obtain final compensation phases of each transmitting channel, and respectively issuing the final compensation phases to phase shifters of the corresponding transmitting channels; and recovering the calibration mode to a normal working mode, and taking the final compensation phase of each transmitting channel as the initial phase of the corresponding channel to perform phase adjustment, thereby realizing high-precision multi-channel online phase calibration.

The application belongs to the technical field of circuit breaker testing, and particularly relates to a circuit breaker mechanical property testing system and method based on a star flash SLB, which comprises a communication-connected handheld terminal master module, a three-phase property testing terminal slave module, a dynamic property testing terminal slave module and a control terminal slave module, wherein the communication connection is specifically wireless communication connection through a star flash SLB network complying with the star flash wireless communication system standard; the handheld terminal master module is a management node of the testing network, is used for distributing a time synchronization reference, scheduling network resources and uniformly distributing testing instructions; the three-phase property testing terminal slave module, the dynamic property testing terminal slave module and the control terminal slave module are terminal nodes of the testing network, are used for receiving the instructions of the handheld terminal master module, synchronously executing data collection or control operation based on a unified time reference, and returning result data to the handheld terminal master module. The problems of complex wiring, low efficiency and insufficient synchronization accuracy in traditional testing are solved.

The application relates to a cross-system data synchronization method and system of a cake electronic coupon mall docking system, which comprises a local operation monitoring module and an interface adapter of each cooperative system deployed in the mall, captures heterogeneous data streams and sends the data streams to a message middleware; a pre-trained analysis model is used for intelligent analysis of the data streams, static templates and dynamic parameters are identified through the deep learning capacity of the analysis model, and a structured data stream in a unified format is output; based on a distributed stream computing framework, staged incremental calculation is performed on the structured data, including non-blocking merging and compression of DML operations and fusion calculation with DDL operations to generate an incremental data snapshot; and the snapshot is routed and synchronized to a target system according to a data source, so that stable and efficient bidirectional data synchronization between the cake electronic coupon mall and the cooperative system is realized, cross-system data collaboration capability is effectively improved, and data support is provided for core businesses such as electronic coupon state synchronization and inventory updating.