5results about How to "Flexible grouping" patented technology

This application proposes a configuration system and method for distributed power locomotives. The system includes an operation and display module for sending vehicle data of the distributed power locomotives to a central control module; sensors for measuring the weight of the dump trucks and the real-time tilt angle of the distributed power locomotives; a data acquisition module for collecting the weight and real-time tilt angle of the dump trucks; and a central control module for determining the required number of powered dump trucks and the required number of drive mechanisms based on the vehicle data, the weight of the dump trucks, and the real-time tilt angle, and configuring the distributed power locomotives based on the number of powered dump trucks and the number of drive mechanisms. The technical solution proposed in this application can quickly and accurately calculate the required number of powered dump trucks and the required number of drive mechanisms under the current construction environment, and can also flexibly group them based on the required number.

The invention provides a low earth orbit satellite communication and navigation integrated waveform design method based on downlink rate splitting multiple access. According to the method, a communication and navigation integrated system model based on a low-earth-orbit satellite constellation is established for a low-earth-orbit satellite internet scene in combination with a frequency spectrum sharing technology, communication and navigation positioning services are simultaneously provided for users by a group of satellites, and the utilization rate of frequency-earth-orbit resources is improved. According to the method, good self-correlation and cross-correlation characteristics of the ZC sequence are utilized, the ZC sequence serves as a positioning signal to be subjected to same-frequency-band power domain superposition with a communication signal, and accurate positioning can still be achieved even under the condition that the signal-to-noise ratio is extremely low. According to the method, the frequency track efficiency and the access density of the system are improved, and meanwhile, the complexity is low.

The invention discloses communication equipment and a communication system switching method, and belongs to the technical field of communication. The communication equipment comprises a digital signal processing and baseband processing unit, an antenna array and a plurality of groups of communication links, the antenna array comprises N antenna sub-arrays, one antenna sub-array corresponds to one group of communication links, each antenna sub-array is connected with the digital signal processing and baseband processing unit through the corresponding communication link, and the digital signal processing and baseband processing unit is connected with the antenna array. Each antenna sub-array comprises a plurality of antenna array elements, and N is an integer greater than 1; wherein the first number is smaller than the second number, and the first number is the number of antenna array elements used for communicating with the ground system in the N antenna sub-arrays when the communication equipment is in a working mode of communicating with the ground system; the second number is the number of antenna array elements used for communicating with the satellite system in the N antenna sub-arrays when the communication equipment is in the working mode of communicating with the first satellite system.

The invention discloses a FastFlood detection method and device based on an Flink flow processing engine, and the method comprises the steps: collecting flow data from various data sources in real time through the Flink flow processing engine, and distributing the flow data to a corresponding sliding time window; sliding the time window to allow the window to slide on the time axis, and capturing the flow change by setting the window size and the sliding step length; carrying out statistical analysis on the flow data in each sliding-out window; the statistical analysis result is compared with a preset threshold value, and whether typical features of the pulse type DDoS attack are presented or not is judged; and if the pulse type DDoS attack is identified, triggering a corresponding protection mechanism. According to the method and the device, the limitation of an operator-level network scale can be spanned, seamless coverage and efficient data acquisition can be realized, attack characteristics can be accurately extracted in a complex and changeable network environment, and a high-sensitivity real-time detection model can be constructed.

The invention relates to a marine battery system. The marine battery system comprises a set of quick-plug lithium ion battery pack, a set of high-voltage confluence cabinet and a set of battery energy management system, one set of high-voltage confluence cabinet is laid, mounted and fixed at the bottom of the battery cabin, and one set of quick-insertion type lithium ion battery pack is formed by stacking a plurality of layers of quick-insertion type lithium ion battery packs and is directly and quickly inserted and mounted on the high-voltage direct-current cabinet, so that the lithium ion battery packs are convenient to mount and compact in space, and wiring is not needed outside the battery packs. Besides the conventional battery BMS function, the battery energy management system also comprises multi-strategy mode battery grouping control. The marine battery system is convenient to install, free of maintenance space design, large in electric quantity configuration capacity in unit volume and flexible in battery pack grouping, and the installation, maintenance, unpacking and transportation time of the marine battery system is shortened.