407 results about "Reliable transmission" patented technology

The invention relates to the technical field of wireless communication, in particular to a production line wireless communication system and method. The system comprises a multi-dimensional feature sensing module, an interference intelligent cognition and decision-making module, a communication opportunity decision-making module and a channel resource arrangement module. An expected action sequence, transient current features and spatial position topology of an interference source are collected through a multi-dimensional feature sensing module, and an interference source multi-dimensional feature set is generated through fusion; the interference intelligent cognition and decision-making module performs space-time spectrum joint modeling of an interference field based on the feature set, generates a workshop electromagnetic environment situation map, constructs a whole network link toughness map in parallel, and generates a conflict-free communication scheduling table through fusion analysis and multi-dimensional cost optimization; the communication opportunity decision module converts the dispatch table into an executable instruction; and the channel resource arrangement module executes the instruction and realizes closed-loop feedback. According to the method, the problem of communication uncertainty caused by industrial electromagnetic interference is solved, and reliable transmission of key services such as automatic guided vehicle scheduling and man-machine interaction is ensured.

The invention discloses an underground data reliable transmission method and system based on multipath redundancy, and relates to the technical field of drilling operation well control monitoring, and the method comprises the steps: building a channel state real-time monitoring and reliability evaluation mechanism for a plurality of communication channels from underground to ground, and taking an evaluation result as a drive, performing erasure redundancy coding and adaptive fragment distribution on a to-be-transmitted data packet to enable a channel with higher reliability to bear more coding fragments; parallel uplink transmission of the fragments is achieved through multi-channel scheduling, and the ground end carries out decoding reconstruction based on the arriving fragments to recover complete monitoring data. Therefore, when the channel is degraded or partially loses efficacy, the data can still be continuously available, so that the certainty and the real-time performance of underground monitoring data transmission are improved.

The invention discloses a satellite-based routing decision making method and device and a storage medium. The method comprises the following steps: determining a plurality of reference curves in each first sampling period; determining a first distribution curve in the current time period, and broadcasting the reference curve of the current time period, the first distribution curve and the channel capacity of each area in the current time period to each satellite; determining a reference curve of the next time period, calculating a deformation relation between the reference curve of the second sampling time period and the reference curve of the third sampling time period, and performing deformation processing on the first distribution curve to obtain a plurality of second distribution curves of the next time period; predicting the satellite congestion degree of each region in the next time period according to the channel capacity of each region in the current time period on the basis of the plurality of second distribution curves; and based on each region, constructing a plurality of corresponding routing paths, and determining an optimal routing path in the plurality of routing paths by using a genetic algorithm. Therefore, the technical effect of reliably transmitting data is achieved.

The invention relates to a flexible regulation and control load remote control terminal and method, and belongs to the technical field of power system automation and demand side management.The control terminal comprises an intelligent communication adaptation module, a coupling modeling module, a multi-scene self-adaption regulation and control module and a user interaction feedback module which are interconnected through an internal data bus; real-time interaction and cooperative work of data are realized; according to the invention, the breakthrough of the regulation and control mode from static presetting to dynamic optimization is realized, full-protocol compatibility and high-reliability transmission are realized, the real-time performance and interaction depth of user side response are improved, and the refinement and precision of control are improved.

The invention discloses an asynchronous processing method and device for business process data, and belongs to a distributed system data processing technology, and the method comprises the following steps: S101, receiving a business request message, and persistently storing the business request message in a main message queue; s102, acquiring a to-be-processed message from the main message queue, and locking an associated target data record before executing processing; s103, verifying data consistency based on the version number recorded by the target data, if the version number is matched, executing processing and updating the version number, and otherwise, discarding the message; s104, after successful processing, sending a confirmation instruction deletion message to the main message queue; through persistent storage of the main message queue, a version number verification mechanism and management of the dead message queue, the problem of data inconsistency caused by concurrent operation is effectively prevented, reliable transmission of messages is ensured, loss of service data is avoided, dead message processing efficiency is optimized, and the method has the advantages of ensuring data consistency, preventing message loss and improving system reliability.

The utility model relates to a detection system. The detection system comprises a plurality of control hosts; each slave unit comprises at least one slave, the at least one slave comprises a to-be-detected device and / or a detection device for detecting the to-be-detected device, the central repeater is in communication connection with each control host through an SPI communication link, and the central repeater is provided with a plurality of storage modules in one-to-one correspondence with the plurality of control hosts; and the plurality of edge repeaters are respectively in communication connection with the central repeater through SPI communication links, and each edge repeater is respectively connected with all slave machines in one slave machine set through communication interfaces. According to the utility model, signal attenuation and interference in long-distance transmission can be effectively relieved, and the reliable transmission distance of the SPI is expanded; the plurality of control hosts can realize independent and reliable communication with the to-be-detected devices in the different slave units or the detection equipment thereof, and the detection reliability of the to-be-detected devices can be improved.

The invention provides an end-network cooperative transmission system and method for a multi-mode network. The system comprises a terminal service demand layer which is used for identifying the service type of a terminal in a multi-mode network, generating structured service demand information and transmitting the service demand information to a network collaborative decision-making layer; the network cooperation decision-making layer is used for fusing the service demand information and the link state information, generating a transmission optimization strategy including path selection, priority mapping, bandwidth allocation and rate control, and transmitting the transmission optimization strategy to the transmission optimization strategy execution layer; and the transmission optimization strategy execution layer is used for executing a transmission optimization strategy, collecting link state information in the multi-mode network in real time through INT, and transmitting the link state information to the network cooperation decision layer. According to the method, efficient scheduling of heterogeneous network resources and high-reliability transmission guarantee of differentiated services are achieved, and the method is suitable for key service scenes sensitive to time delay and reliability, such as Internet of Vehicles and ultra-high-definition video transmission.

The invention discloses a metering inspection platform and method, and the method comprises the following steps: carrying out the extraction of communication parameters and function information of metering equipment, building a unified data model, distributing a unique identifier, and achieving the automatic access of different types of equipment. The platform automatically generates an adaptive inspection flow path according to equipment functions and inspection requirements, can temporarily cache and collect data when a network is abnormal in a flow execution process, and adds a timestamp and verification information to the data. And after the network is recovered, the system compares and verifies the cached data, updates the process state after ensuring the data consistency, records and archives the effective data, and generates a traceable record entry. According to the invention, the access flexibility of the metering equipment is improved, and automatic construction of a process and reliable transmission and storage of data are supported.

The invention relates to a method for optimizing data transmission in a multi-agent system, comprising: - obtaining raw data streams respectively from at least two agents; - classifying the received raw data streams based on predetermined characteristics; - obtaining requirements regarding end-to-end (E2E) latency and performance metrics from at least one node of the multi-agent system; - obtaining a set of interdependent QoS requests for the raw data streams suitable for data transmission via a a communication system; - computing a figure of merit for all the raw data streams based on the classified raw data streams, the node requirements, and the set of interdependent QoS requests; and - encoding the raw data streams and transmitting through the communication system the encoded data streams to the node according to the computed figure of merit. The invention ensures efficient and reliable transmission in the multi-agent communication system.

The invention discloses a satellite-borne equipment embedded system software on-orbit reconstruction method and a satellite-borne equipment embedded system. The method comprises the following steps: partitioning a FLASH memory of a microcontroller of satellite-borne equipment into a region, a BootLoader boot program region and an application program storage region; an independent BootLoader bootstrap program is solidified in the BootLoader bootstrap program area in advance; receiving a program file subpackage from a satellite service computer during on-orbit operation; a two-stage reliable transmission protocol including sequential receiving and packet supplementing receiving is adopted to receive a program file, wrong and missing packets are received and dynamically recorded in the sequential receiving stage, and only the wrong and missing packets are selectively retransmitted in the packet supplementing receiving stage; according to an instruction of the satellite service computer, the received complete program file is verified, the program file is written into the application program storage area after passing the verification, updating is completed, the BootLoader bootstrap program jumps to the updated application program, and on-orbit reconstruction is completed.

The invention discloses a wireless network data reliability transmission system, which is used in the technical field of data transmission and comprises a slave gateway deployment and data aggregation module. A scheduling protocol and priority management module; a hierarchical caching and breakpoint resuming module; and a trend prediction optimization decision module. According to the invention, in combination with priority-based scheduling, link quality evaluation, data caching and retransmission mechanisms, reliable transmission of data with different priorities in a wireless network can be ensured, and normal transmission can be recovered through an efficient data recovery mechanism when the network is unstable; through real-time environment state estimation and prediction, communication parameters and resource scheduling can be dynamically optimized, network performance is effectively improved, and communication delay is reduced. The hidden state of a communication environment is estimated in real time through comprehensive analysis of link quality, event records and cache state data, future hidden state changes are predicted through a time sequence convolutional network, and potential performance degradation risks are recognized in advance.

The invention relates to a satellite computing power task deterministic transmission path selection method, which comprises the following steps: according to a computing power task type, a computing power resource use type and a computing power task calculation amount, in combination with computing power resource state information of each satellite computing power node in a computing power resource state information base, determining that a computing power task is calculated through a satellite computing power node, the tasks are decomposed into a plurality of tasks for cooperative calculation through a plurality of satellite computing power nodes; and taking the access satellite computing power node as a source node, taking the target satellite computing power node as a target node, and calculating a deterministic transmission path of the computing power task or each computing power subtask according to the end-to-end delay of the computing task and the network state information of each satellite computing power node in the computing power network state information base. The computing power task dynamic decomposition and the computing power task deterministic scheduling are adopted, the optimal matching of the computing power task and the computing power resource is realized, the reliable transmission of the computing power task in the controllable time is ensured, and the efficient calculation of various satellite computing power tasks is realized.

The invention discloses a high-performance reliable transmission system implementation method, and relates to the related field of data transmission control, and the method comprises the following steps: a sending end fragments to-be-sent data according to a preset loading size, outputs a plurality of fragments of the to-be-sent data, and extracts a plurality of protocol heads; the sending end sends a plurality of to-be-sent data fragments to the receiving end in sequence, and the sent data fragments are stored in a sent queue of the sending end; the receiving end performs validity check on the received at least one data fragment, and replies a confirmation message to the sending end according to a check result; and configuring a transmission coordination mechanism, monitoring the transmission process of the plurality of to-be-sent data fragments by using the transmission coordination mechanism, and carrying out coordination construction on the transmission coordination mechanism through the sent queue of the sending end, the received queue of the receiving end and the to-be-sorted queue. The technical problems that an existing data transmission system is low in efficiency and insufficient in reliability are solved, and the technical effect of improving data transmission performance and reliability is achieved.

The invention belongs to the technical field of industrial measurement and control, and discloses a multi-case cascade vibration noise data acquisition clock synchronization method. A clock drift prediction model based on deep learning is constructed by acquiring local clock signals and environment parameters of all cases in real time, and accurate prediction of clock behaviors is achieved. A multi-mode communication strategy combining optical fibers and wireless radio frequency is innovatively adopted, reliable transmission mechanisms which are redundant to each other are formed, and the anti-interference capability is remarkably enhanced. A dynamic compensation mechanism based on the fuzzy logic controller can intelligently adjust compensation parameters according to clock states and environment changes, and accurate correction is achieved. A multi-level verification mechanism including local self-inspection, mutual inspection between cases and global optimization is established, a graph neural network technology is introduced to carry out system-level optimization, and the system has self-learning and self-optimization capabilities. According to the method, the time consistency of the vibration noise data is remarkably improved.

The invention discloses an electric vehicle transportation state real-time monitoring method based on multi-sensor fusion, and belongs to the field of electric vehicle transportation state real-time monitoring. A comprehensive state index is obtained through integration of the multi-source data fusion model; acquiring a data transmission priority in the comprehensive state index, and if the data transmission priority is higher than a communication bandwidth threshold, allocating an additional transmission time sequence to obtain a dynamic communication scheduling sequence; carrying out resource allocation on the vehicle-mounted communication system according to the dynamic communication scheduling sequence, and judging whether key safety data such as battery overheating early warning is in the first position of the sequence or not so as to determine a real-time transmission path; and monitoring a communication congestion index in the real-time transmission path, and if the communication congestion index exceeds a threshold value, activating a standby data compression mechanism to obtain a reliable transmission data packet, and sending the reliable transmission data packet to a monitoring center.

The invention provides an HTTP proxy implementation device based on a UDP protocol, and relates to the technical field of communication. Comprising a client, a first HTTP forwarding system, a second HTTP forwarding system and a server. An HTTP request is generated through a client and sent to a first HTTP forwarding system, the first HTTP forwarding system splits the HTTP request into a plurality of data segments, a reliable transmission message header containing a serial number and a check number is added to each data segment, and the data segments are packaged into a UDP data packet and then forwarded to a second HTTP forwarding system. And the second HTTP forwarding system receives and de-encapsulates the UDP data packet, generates a data group packet, sorts and recombines the data segments according to the serial number, performs integrity verification by using the verification number, and finally reconstructs an HTTP request and forwards the HTTP request to the server, thereby realizing reliable transmission of HTTP data under the UDP protocol.

The invention discloses a data network interaction system for rail transit data transmission, which relates to the technical field of data transmission and comprises a data acquisition module, an intelligent exchange scheduling module, a real-time processing module and a high-reliability transmission guarantee module. And high-speed and reliable transmission is ensured through a 10-gigabit point-to-point direct connection channel, and meanwhile, continuity is ensured by adopting a redundant link, so that efficient, stable and real-time processing of rail transit data is realized. According to the invention, a high-speed dedicated channel is constructed through direct connection of the 10-gigabit Ethernet, and hierarchical transmission of multi-source data is realized in combination with an intelligent scheduling strategy; meanwhile, hardware-level heartbeat detection and redundant links are deployed, and millisecond-level fault switching is guaranteed; and a dynamic threshold adjustment mechanism is introduced, the reliability and robustness of the system are adaptively optimized, and the high-real-time and high-reliability transmission requirements of rail transit are met.

The invention discloses an RFID data reliable transmission method and system based on multi-level cache, and relates to the technical field of Internet of Things data communication, and the method comprises the steps: collecting label data through an RFID reader-writer, adding a collection timestamp and a business semantic label to the label data, and generating original data; before the original data is written into the memory cache pool, a corresponding transaction log is recorded in the nonvolatile storage medium, and then the writing operation is executed; according to the aging priority identifier and the residence duration corresponding to the original data, executing cache level migration on the data meeting the degradation condition, moving the data from the memory cache pool to a Flash backup cache region, and synchronously updating a transaction log; high-priority original data is selected from the memory cache pool to form an upload packet, whether the upload packet is subjected to fragmentation processing or not is determined according to a historical transmission state, if not, the upload packet serves as a single transmission unit, and an overall transmission state record is created for the upload packet in a Flash backup cache region.

The invention belongs to the technical field of electrochemical water treatment, and provides an electrochemical water treatment equipment cluster monitoring method and system based on cloud collaboration, and the method comprises the steps of data collection and preprocessing, low-delay high-credibility data transmission, intelligent fault diagnosis, dynamic energy efficiency optimization and collaborative scheduling, and whole-process monitoring visualization. According to the method, through dynamic priority scheduling, multi-link backup and full-link encryption transmission mechanisms, low-delay and high-reliability transmission of key data is realized on the premise of ensuring data security. Especially in emergency scenes such as sudden water quality change, through 5G slicing and differential compression technologies, real-time performance and bandwidth cost are effectively balanced, millisecond response of a control instruction is ensured, through federal transfer learning and digital twinning scene adaptation, on the premise that privacy data of each water plant is not shared, diagnosis capability of small sample faults is improved, and fault diagnosis efficiency is improved. And rapid parameter optimization in an extreme water quality scene is realized.

The invention relates to the technical field of communication, and discloses an equipment input signal general broadcast communication method, which comprises the following steps that: a central coordination node broadcasts a synchronization frame to establish a global time sequence; the terminal equipment determines an exclusive sending time slot based on identity label hash mapping, and carries out conflict-free transmission in combination with carrier sensing and a dynamic back-off mechanism; the center node periodically evaluates a channel state and adaptively adjusts a time slot structure and a hash parameter; an acknowledgement response and enhanced retransmission strategy is introduced to guarantee reliability; the terminal adopts a low-power-consumption monitoring mode to reduce energy consumption. In combination with an adaptive scheduling strategy of channel state perception, the system can dynamically optimize time slot resource configuration according to a real-time communication environment, and the spectrum utilization efficiency is remarkably improved. And due to the fine design of the carrier sensing and back-off mechanism, the occurrence rate of residual conflicts is further reduced, and reliable transmission of key data is ensured.

The invention relates to the technical field of electric digital data processing, in particular to a charging pile remote verification method, system and equipment based on digital twinning and a medium, which are used for uniformly acquiring and processing various operating parameters and state information in the operating process of a charging pile to form standardized input; digital twin modeling is carried out, a virtual model corresponding to a real charging pile operation mechanism is constructed, and the state of the hardware logic and software protocol level is synchronously modeled; through real-time synchronization, alignment and mapping of time and variables are carried out on collected data and a virtual model, and timeliness and accuracy of virtual-real comparison are guaranteed; a state verification mechanism is adopted, operation deviation is calculated, potential faults are identified in combination with multi-period trends, and graded alarm information is generated; remote control is utilized, a control instruction is issued after abnormity is detected, reliable transmission is ensured by combining a secure channel, signaling compression and a receipt confirmation mechanism, feedback updating is completed through state verification and log archiving, and whole-process remote verification of the charging pile is achieved.

Systems, methods, and instrumentalities associated with reliable transmission of a set of protocol data units (PDUs) are disclosed herein. A network device may receive an indication that a set of PDUs is to be communicated in a reliable manner over a wireless communication network. The network device may determine reliability metadata associated with the set of PDUs based on the received indication. The network device may transmit reliability metadata associated with the set of PDUs to another device in the wireless communication network. The network device may perform one or more operations for the PDUs of the set of PDUs based at least on the reliability metadata associated with the set of PDUs.

The invention discloses a smart city-oriented multi-modal data transmission optimization method. The method comprises the following steps of collecting and preprocessing multi-modal original data generated in a city; performing joint feature extraction by using an improved CorrNet network and outputting an importance label; collecting operation data and carrying out regular analysis on the urban network to generate network state information; the multi-modal features, the importance labels and the network state information are associated and analyzed, and a coding control instruction is generated; performing differential compression and coding processing on the multi-modal data to generate a to-be-transmitted data queue; path calculation and resource allocation analysis are carried out, and a scheduling control instruction is generated and implemented through a tabu search method; and generating and uploading a transmission performance evaluation result based on the feedback index and the network state information. According to the method, multi-modal feature extraction, differential coding and intelligent scheduling technologies are fused, efficient and reliable transmission of urban data is realized, and the method has the advantages of high accuracy, controllable time delay and high resource utilization rate.

The invention relates to the technical field of wireless communication, in particular to an anti-interference data transmission method and system for an aviation ground service earphone. The method comprises the following steps: acquiring a multi-source scene data set, analyzing dynamic electromagnetic interference, differentiated wireless channels and multi-node service collaboration characteristics based on the multi-source scene data set, and generating a ground service communication multi-dimensional parameter set; based on the ground service communication multi-dimensional parameter set, analyzing a coupling deterioration effect of composite interference and a multipath channel and a restriction effect of a differential channel on multi-node cooperative scheduling, and obtaining a ground service communication anti-interference cooperative strategy set; and based on a ground service communication anti-interference cooperative strategy set, aiming at suppressing composite interference in real time, dynamically adapting differentiated channels and ensuring reliable transmission of high-priority instructions, executing layered anti-interference cooperative communication, and outputting a ground service operation communication state report. By executing layered anti-interference cooperative communication, the real-time performance and reliability of a communication system can be effectively improved.

The invention relates to a video transmission system using space-time dual importance, which belongs to the field of image transmission, and comprises a sending end: coding a video frame into a continuous semantic feature map through a feature extractor, then discretizing the continuous semantic feature map into a mark map through quantization, and dividing the mark map into a plurality of independent data packets, meanwhile, the importance weight of each data packet is calculated through a dual space-time importance modeling module; the physical layer is used for realizing a resource scheduling strategy based on semantic importance through three links of data packet admission, channel-semantic matching and power allocation; and the receiving end is used for carrying out reverse recombination of semantic features and generative reconstruction of video contents on the received data packet after channel decoding. According to the method, spatial significance and time innovation of video content are explicitly modeled, the semantic value of each data packet is quantified, allocation and protection of wireless resources are guided accordingly, and while reliable transmission of key semantic information is guaranteed, dual optimization facing machine tasks and human vision is achieved.

The invention discloses a flexible DC power transmission system grid following-grid construction hybrid control method, and the method comprises the following steps: obtaining the voltage and current of a receiving end MMC grid connection point, and carrying out the dq decomposition, thereby obtaining a d-axis component and a q-axis component under a dq rotating coordinate system; acquiring actual values and related reference values of direct-current voltage output by the receiving-end MMC, alternating-current voltage and frequency of a grid-connected point of the receiving-end MMC and average capacitance voltage of a sub-module; sequentially calculating a phase reference value of the receiving end MMC, a d-axis current reference value and a q-axis current reference value of the grid connection point, a d-axis voltage reference value and a q-axis voltage reference value of the differential mode voltage, a direct current reference value and a direct current modulation ratio reference value; and calculating the reference value of the modulation voltage of the receiving end MMC under the abc static coordinate system. The control method has the advantages of adapting to wide-range short-circuit ratio change of the receiving-end power grid, guaranteeing reliable transmission of power under the condition of wind speed change, and still maintaining synchronous operation when the receiving-end alternating-current power grid seriously breaks down.

The invention relates to a carrier rocket secondary reusable electrical system based on a modular TTE-TSN bus, and aims to solve the problems of reliability, light weight and maintenance efficiency in high-speed reentry and precise recovery of a secondary rocket. The system comprises a modular comprehensive control unit, a redundant TTE-TSN high-speed bus, a distributed thermal protection monitoring network and an intelligent health assessment module. Through the modular design, electrical equipment is greatly reduced, and the mass is obviously reduced; the redundant TTE-TSN high-speed bus realizes high-bandwidth and high-reliability transmission of messages on the rocket; the thermal protection monitoring network and the attitude coordination system dynamically optimize reentry thermal load distribution; the intelligent health assessment model predicts the structural life and reuse feasibility based on machine learning. According to the method, the reuse economy and reliability of the two-stage rocket are remarkably improved, and the method is suitable for commercial spaceflight and hypersonic flight vehicle tasks.

The invention relates to the technical field of subway security and protection monitoring and video transmission, in particular to a subway security and protection monitoring video quick calling and multi-channel transmission optimization system, which comprises an analysis module used for extracting a feature set of multi-source heterogeneous metadata in a subway station and carrying out matching calculation on the feature set and an abnormal event template to obtain a matching confidence coefficient; if the matching confidence exceeds a preset threshold, judging that an abnormal event occurs and outputting an event feature identifier; determining an influence range and an association path of the event by combining space and scene information in the metadata according to the event feature identifier; and based on the influence range and the association path, obtaining a target equipment calling list containing the equipment identifier, the space-time weight and the initial priority. Intelligent sensing is realized through multi-source data fusion, dynamic resource allocation is realized through scheduling and channelization, and stable delivery of streaming media is guaranteed through adaptive coding and reliable transmission, so that the emergency response capability of a subway security monitoring system is comprehensively improved.

The invention provides an adaptive high-performance consistent control method for a multi-agent system under denial of service (DoS) attack, and a sensing unit comprises a state sensing module carried on each agent, obtains body state information in real time, and shares information with other agents through an adjacent communication network; the information is used for error calculation and local control decision, and meanwhile, communication quality and whether interruption occurs are judged, so that the observability and anti-disturbance capability of the system are enhanced; a distributed control unit controller is deployed in each intelligent body, error mapping and performance constraint are carried out, a time-varying performance boundary is constructed, a control law and a self-adaptive estimation law are designed, a communication execution unit is responsible for transmitting a trigger signal, state estimation or control input generated by the controller among the intelligent bodies, intermittent DoS attacks can be tolerated, and the control law and the self-adaptive estimation law are designed. And an automatic retransmission and timeout judgment mechanism is provided, so that reliable transmission of key data is guaranteed. State estimation, performance recovery and efficient communication can be realized in a DoS attack environment.