60 results about "Data Distribution Service" patented technology

The invention provides a middleware system interacting with a soft bus based on a general publish-subscribe mode, which belongs to the technical field of communication, and comprises a protocol plug-in management module for dynamically loading a protocol plug-in; the soft bus interaction module receives the publishing / subscribing request message, creates a session service and calls a loaded protocol plug-in, and the protocol plug-in processes a data distribution service message; the message structure management module is connected with the protocol plug-in management module; the data mapping module is connected with the message structure management module; the session management module is respectively connected with the soft bus interaction module and the data mapping module; and the real-time scheduling engine is respectively connected with the protocol plug-in management module and the session management module. The method has the advantages that multiple protocols are supported through a plug-in mechanism, efficient interaction with a device soft bus is achieved, the soft bus is used for issuing capacity, session services are created, a general message structure is adopted, low-delay, high-reliability and efficient heterogeneous system communication is achieved, and the requirements of the Internet of Things and industrial control scenes are met.

The invention provides a forest fire fighting and rescue fire scene low-altitude meteorological monitoring service system and method. The system comprises a forest fire scene meteorological environment monitoring system, a data fusion analysis system and a data distribution service system. The forest fire scene meteorological environment monitoring system comprises an air-ground collaborative meteorological observation system and a forest fire scene space information remote sensing system, and is used for acquiring low-altitude meteorological environment, vegetation and terrain situation information in a forest fire scene boundary layer; the data fusion analysis system is used for observation data space-time normalization processing, observation data space-time scale expansion, three-dimensional fire scene situation construction based on terrain situation information, meteorological data fusion analysis and information visualization display; and the data distribution service system comprises a data link and data distribution service software and is used for distributing data of the forest fire scene meteorological environment monitoring system and the data fusion analysis system to different forest fire fighting rescue forces and hardware terminals. The overall efficiency and safety of forest fire scene fighting work can be effectively improved.

Systems and methods are disclosed for ensuring the integrity and security of data exchanges between mainframe systems and external channels. The invention includes a Data Distribution Service (DDS) that receives files from various channels and a Network Data Mover (NDM) that routes these files to a Gatekeeper Landing Zone (GK LZ) based on real-time server health and availability. A File Manager module detects new files, performs sanitization, converts files from EBCDIC to ASCII, and updates the Gatekeeper Control Database (GKC DB). The Validation module ensures data compliance, checks for duplicates, and logs exceptions. A Transaction Manager Resource Adapter (TMRA) splits data into transactions, identifies optimal processing paths, and converts data back to EBCDIC for transactions. The Reconciliation module verifies data accuracy and logs details, while the Backout module reverses transactions if discrepancies are found.

This application discloses a system architecture for implementing data distribution service (DDS) communication based on an automotive open system architecture (AUTOSAR), a communication method, and a device that may be applied to an intelligent agent (for example, an intelligent vehicle, an intelligent connected vehicle, or an autonomous vehicle) in intelligent driving.

Disclosed are a system and a method for training reservoir engineers based on digital twin technology. The training system includes a data operation workstation, a data distribution server and an intelligent terminal; trainees view initial data of reservoir geology by the intelligent terminal to form a preliminary understanding of the reservoir, and then issue reservoir development instructions; according to the development instructions, the reservoir numerical simulation operation module sends feedback data to the intelligent terminal after simulation calculation for the trainees to view, and the trainees analyze and determine reservoir feedback information, thereby forming a new understanding of the reservoir. After having updated understanding of the reservoir, the trainees issue a reservoir development instruction again by the intelligent terminal until the oil and gas field development is completed. After completion, the data operation workstation outputs recovery factor and profit amount of this development simulated by the trainees as simulation results.

The application relates to the technical field of vehicle terminal software debugging, in particular to a test method and device based on DDS communication, test equipment and a storage medium, wherein the method comprises the following steps: obtaining a test request of a tested device; running a test script according to the test request, starting a simulation client or a simulation server by using the test script, calling a data distribution service (DDS) by using the simulation client or the simulation server to communicate with the tested device, and simulating the calling of a target service function on the tested device; if it is detected that an execution result of the target service function on the tested device meets preset qualified conditions, it is determined that the DDS communication test of the tested device is qualified, otherwise, it is determined that the DDS communication test of the tested device is unqualified. Therefore, the problems of application limitations and the like caused by the fact that, in the related art, a traditional communication test equipment is improved but cannot realize the communication test of cross-domain equipment based on the DDS communication are solved.

The application discloses a kind of decentralized edge device resource sharing systems and methods, comprising: application layer is used for the execution and result processing of business logic, provides model inference service and mirror service;Business layer is used for service management and scheduling to business logic, provides service registration, service discovery, load balancing and task distribution function;Decentralized resource sharing communication layer is based on distributed data distribution service protocol and realizes the peer-to-peer communication and resource sharing between devices;The decentralized resource sharing communication layer includes resource pool node discovery module, resource pool state synchronization module, resource pool service calling module, dynamic member management module, resource detection module, resource scheduling module, resource pooling module.The application realizes resource sharing in decentralized environment, real-time detection, intelligent scheduling and virtualization pooling, effectively improves the resource utilization of edge device and collaborative work efficiency.

This application discloses a communication method, apparatus, device, medium, and product. The communication method includes: determining a main application running within a first control node, wherein at least one application runs within the first control node, and each application is a participant in a data distribution service; and communicating with a second control node through the main application running within the first control node. This technical solution, by determining a main application for the control node and using this main application to communicate externally on behalf of the control node for service discovery, effectively reduces the complexity and data volume of communication, alleviates the message processing pressure on the control node, and improves the operating performance of the control node. Other slave applications do not need to communicate externally.

The invention provides a distributed software system and a data transmission method, and relates to the field of distributed technologies. The distributed software system comprises a plurality of application nodes, the application nodes are matched to achieve the service function of a target application, the application nodes comprise a data sending node and a data receiving node, and the data sending node is used for responding to the detected target data to be transmitted between the data sending node and the data receiving node and sending the target data to the data receiving node. Serializing the target data to obtain a byte array corresponding to the target data, and sending the byte array to the data receiving node based on the data distribution service; and the data receiving node is used for receiving the byte array and performing deserialization processing on the byte array to obtain target data. The distributed software system has good compatibility to the application nodes, the maintenance difficulty and the maintenance cost are reduced, and the overall performance of the system is improved.

The invention discloses a power system distributed simulation method based on data distribution service, and belongs to the technical field of power system simulation modeling. The method comprises the steps that a power system model is decoupled mathematically and divided into subsystems which are connected with one another, and a unified mathematical interface between the subsystems is deduced; a data transmission scheme between subsystems is determined, and a data distribution service DDS is adopted to design and realize a communication interface; a synchronization scheme between subsystems of different time scales is determined; and meanwhile, data transmission and simulation among a plurality of devices are realized. And finally, a distributed joint simulation platform based on the DDS is constructed. According to the method, the contradiction between the simulation accuracy and the simulation efficiency of a traditional centralized simulation mode is overcome, and the multi-dimensional requirements of novel power system analysis on refined model accuracy, efficient simulation rate and general simulation architecture expansibility can be met.

The invention provides a satellite communication method and system. The satellite communication method comprises the following steps: acquiring a data object of a terminal; taking the data object as a specified micro-service instance in a core network application layer, and obtaining a corresponding data distribution service DDS theme according to the specified micro-service instance; acquiring a corresponding quality of service (QoS) strategy according to the data distribution service (DDS) theme; obtaining a subscriber micro-service instance subscribing the data distribution service DDS theme according to the data distribution service DDS theme; and distributing the data objects to the subscriber micro-service instances in parallel according to a quality of service (QoS) strategy. Through the method, the problem that the existing SBA architecture is difficult to meet the requirements of a future satellite-borne core network on light weight, low delay, high reliability and autonomous operation and maintenance is solved.

The application provides a DDS-based communication method and device and a storage medium, and relates to the technical field of vehicles.The method comprises the following steps: a first DDS AIDE establishes a data transmission channel between a first DDS node and a second DDS node through a second DDS AIDE, the first DDS node and the first DDS AIDE belong to a first component, the second DDS node and the second DDS AIDE belong to a second component, the first component, the second component, the first DDS AIDE and the second DDS AIDE support a DDS protocol, the first DDS AIDE corresponds to at least one DDS node including the first DDS node, and the second DDS AIDE corresponds to at least one DDS node including the second DDS node; and the first DDS AIDE assists the first DDS node in data transmission with the second DDS node based on the data transmission channel. The data transmission performance can be improved.

The utility model discloses an urban tunnel monitoring device for digital twinning. The urban tunnel monitoring device comprises a cloud server, a fixed monitoring module and an inspection monitoring module, the fixed monitoring module comprises a monitoring box and an electronic circuit board, a PLC module and a first communication module are integrated on the electronic circuit board, and the input end of the PLC module is connected with a positioning module, an anchor rod dynamometer, an osmometer, a soil pressure meter, a liquid level sensor and an illumination sensor; the inspection monitoring module comprises an inspection input module and a second communication module; the cloud server is further connected with a data distribution server, and the data distribution server is connected with a local area network communication module and a wide area network communication module. According to the utility model, the fixed monitoring module and the inspection monitoring module are combined for use, data acquisition of physical entities of urban tunnels is realized, input is provided for a digital twinborn model, and guarantee is provided for construction of the digital twinborn model; static and dynamic full-coverage monitoring is realized, and the use effect is good.

The embodiment of the invention provides a data processing method and device, equipment and a storage medium. The method comprises the following steps: constructing a streaming data processing pipeline to send data in a target data set to a data distribution service of a server; receiving a plurality of sets of data records from the streaming data processing pipeline using a plurality of data distribution units of the data distribution service; in response to a received data acquisition request from the data consumption end, sending at least one group of data records in the plurality of groups of data records to the data consumption end by using a target data distribution unit in the plurality of data distribution units; and in response to the consumption confirmation information received from the data consumption end for the plurality of data items in the at least one group of data records, updating the corresponding processing states of the plurality of data items indicated by the data state information based on the corresponding data identifiers of the plurality of data items indicated by the consumption confirmation information. Therefore, the flexibility and reliability of the data processing process can be improved.

The application relates to an ANTLR4-based code generator design method and belongs to the field of code generation. The application generates a lexical analyzer and a syntax analyzer corresponding to an IDL syntax rule file; an IDL file is pretreated, the pretreated IDL file is generated into a syntax analysis tree through the lexical analyzer and the syntax analyzer, and the syntax analysis tree is further generated into structured data; a public interface file for generating C / C++, JAVA files is defined; the C / C++, JAVA public interface file reads a project template file, and structured data in the template file is replaced with structured data in step S2 to generate C / C++, JAVA project files. The application realizes the application of cross-platform and cross-language data distribution services.

The present disclosure relates to a latency test method and device based on underlying communication and electronic equipment. A first time when a data packet starts to be written into a first tester is recorded, and the first time is written into the corresponding data packet. The first tester sends the data packet to a second tester based on a data distribution service. The second tester receives the data packet based on the data distribution service and immediately returns the received data packet to the first tester through the data distribution service. The first tester receives the returned data packet based on the data distribution service, records a timestamp when the data packet is received, obtains a second time, and obtains the first time according to the data packet. According to the first time and the second time, the communication latency of the data packet is calculated. The present disclosure can record the timestamp only through the first tester, avoid the time difference between the testers, improve the accuracy of the test results, and be suitable for continuous multi-packet data transmission, which conforms to the actual communication situation.

The application discloses an intelligent video monitoring system configuration implementation method for an ICU bed, which is characterized in that the video acquisition, behavior analysis and system management are decoupled through the configuration function division of the monitoring system, and a decentralized communication mechanism is constructed based on a data distribution service, so that the system can be deployed and run in a distributed manner on heterogeneous computing devices. Through frame-by-frame analysis of bedside camera video data on the edge side, continuous monitoring of the patient's local behavior is realized, and alarm information is generated when it is determined that there is a risk of extubation. The method supports dynamically configuring the monitoring scale and algorithm instances according to the number of ICU beds and monitoring requirements, thereby improving the scalability, stability and practical application adaptability of the system.

The invention discloses a data distribution service communication method based on multi-core rotation load balancing. The method comprises the following steps: adopting a resource pre-allocation and mapping mechanism at a publishing end and a subscribing end to realize publishing and subscribing resource initialization; efficient distribution and processing of network traffic among multiple cores are realized based on a dynamic round-robin distribution mechanism of data sent among multiple cores of a self-adjusting threshold value; and dynamic optimization of resource allocation is realized through monitoring of resource use conditions during operation and dynamic adjustment of rotation strategy parameters. According to the invention, through a task pre-distribution and dynamic round-robin scheduling mechanism, efficient balance processing of network traffic among multiple cores is realized, the data throughput in a high-density scene is significantly improved, and the transmission delay is reduced.

The invention provides a resource scheduling method and device of a vehicle terminal, equipment and a storage medium, and relates to the field of resource processing of the vehicle terminal. In the scheme, a task processing instruction is obtained; the task processing instruction is used for executing the target task. And determining a performance priority corresponding to the target task, and deploying the target task to a performance core corresponding to the performance priority. And according to a preset service quality strategy, deploying a plurality of threads which are bound with the preset data distribution service in advance into performance cores with different performance priorities respectively. Based on a preset load model, monitoring the plurality of preset indexes to generate actual data, and generating a resource scheduling strategy according to the actual data; and according to the resource scheduling strategy, deploying the performance core of the target task, deploying the performance core of the thread, and executing resource scheduling operation. Therefore, the technical problem that the responsivity of task execution of the vehicle terminal is low is solved.

The invention provides a vehicle data transmission method, device and equipment, a medium and a program product. According to the method, a data distribution service protocol is adopted between processors deployed by a vehicle communication system to realize communication, so that efficient deployment of a unified communication protocol of the vehicle communication system is realized; wherein the data distribution service protocols deployed by different processors are determined according to the computing power of the corresponding processors; in the data transmission process, different processors communicate with each other by adopting a data distribution service protocol, so that the data transmission efficiency is improved; a communication forwarding node does not need to be introduced for data format conversion and protocol adaptation, so that resource consumption is reduced; besides, before the first processor transmits the data, whether the data reaches the expiration time or not is judged, then whether the data is transmitted or not is determined, it is ensured that the data received by the second processor are all valid data within the time limit, the invalid transmission amount is reduced, and resource consumption is reduced.

The application provides a network control method, a user plane function network element and a network management server, and relates to the technical field of communication. The method comprises the following steps: acquiring a data distribution service (DDS) message sent by a robot through a multicast mode; the DDS message is sent by the robot through a protocol data unit (PDU) session attached to a first network slice; acquiring a reliability parameter and a topic parameter from the DDS message; searching in a first database according to the reliability parameter and the topic parameter to determine a corresponding target network slice identifier; the first database is a local database of the UPF network element; when the target network slice identifier is searched, sending an adjustment request to a network management server, wherein the adjustment request comprises the PDU session identifier and the target network slice identifier, so that the network management server adjusts the PDU session from the first network slice to a target network slice corresponding to the target network slice identifier. According to the application, the network slice can be dynamically adjusted according to the reliability parameter and the topic parameter in the DDS message.

The application provides a vehicle-mounted intelligent body communication optimization method and device, electronic equipment and a storage medium, comprising: in response to a communication request of a vehicle-mounted intelligent body, obtaining request information of an MCP client and identifying a target vehicle end service type; according to the target vehicle end service type, transmitting the request information by using a first transmission channel, the first transmission channel being an MCP protocol based on a data distribution service; receiving the request information through middleware, and performing semantic conversion on the request information according to the target vehicle end service type; and forwarding the request information after semantic conversion to a target vehicle end service through a second transmission channel, the second transmission channel being an SOA / IDL interface based on a data distribution service. The application has the beneficial effect of realizing concurrent, low-delay and high-reliability communication of multiple vehicle-mounted intelligent bodies.

The invention relates to the technical field of testing, in particular to a DDS-based testing method and device, equipment and a storage medium, and the method comprises the steps: displaying a testing interface comprising a service list; wherein the service list comprises service names of a plurality of DDS services; the DDS service is a component for realizing a business function through a theme in the data distribution service; obtaining a test rule set for a plurality of target DDS services in the service list through the test interface; the target DDS service is a selected DDS service in the plurality of DDS services; the test rule comprises a total number of cycles and a plurality of execution times in one-to-one correspondence with the plurality of target DDS services; based on the total number of cycles and the number of execution times, through the generated simulation client and simulation server, performing pressure test on the plurality of target DDS services to verify the performance of the plurality of target DDS services; wherein the simulation client is used for issuing data based on a communication rule of a data distribution service; and the simulation server side is used for subscribing and receiving data based on the communication rule of the data distribution service.

The invention discloses a DDS application deployment method and a DDS operation method based on data distribution service, which replace traditional dynamic key negotiation during operation by preposing application identity verification to an installation or starting stage. According to the specific scheme, the method comprises the following steps: in a packaging stage, binding a hash value of a DDS executable program with a permission list, and performing digital signature by using a private key to generate an application permission signature file; and when the terminal equipment starts the DDS application, verifying the legality of the signature by using the built-in RootCA and the public key, and calculating the Hash value of the executable program in real time and comparing the Hash value with the record in the signature file so as to ensure that the program is not tampered and the permission file is matched with the program. During operation, the DDS middleware strictly controls publishing and subscribing behaviors according to the Topic list in the signature file. According to the invention, the complexity of key management and the risk of private key leakage in the DDS network are greatly reduced, and the starting time of the DDS node is reduced from the second level to the millisecond level.

The invention belongs to the field of embedded software development, and particularly relates to a software dynamic reconstruction method based on data distribution service, functional nodes detect and publish communication abnormal information in real time, a center node subscribes to the communication abnormal information and makes a judgment, and if the corresponding functional node is judged to have a fault, the corresponding functional node does not have the fault. If yes, the communication abnormal information is sent to other related function nodes, and a communication link is updated; and the functional node with the fault is reset and releases reset information, and the central node subscribes to the corresponding reset information and notifies other related functional nodes to reset the communication link. According to the method, exception handling information is uniformly specified, all fault points of a processor, an operating system and an external interface are included, and all-around coverage from a bottom layer to application software is achieved in combination with fault information of software. And calling among functions of the embedded software is recorded through the second-level log codes, so that layer-by-layer tracing of abnormal information is realized, and the troubleshooting and positioning efficiency of fault points after abnormity is greatly improved.

The application discloses a data distribution service communication framework supporting pluggable distributed consensus algorithm, which comprises a distributed consensus algorithm module, a collection decision module, a data distribution service middleware and a data distribution service interface module. The consensus algorithm module is responsible for the consistency and availability guarantee of resolutions in a distributed system; the collection decision module is responsible for collecting distributed node information and intelligently adjusting a better consensus algorithm; and the data distribution service interface module is responsible for the interaction between the data distribution service middleware and the distributed consensus algorithm module. Through application of modern computer technology, the application proposes a framework flexibly integrating the data distribution service communication middleware and the distributed consensus algorithm, and intelligently adjusts the consensus algorithm of the consensus algorithm module according to the condition of the distributed system. Based on the application, a high-reliability distributed system capable of solving single-point fault, realizing remote backup and load balancing can be easily built on the data distribution service.

A sensor network for real-time monitoring of electric loads within a household includes multiple Smart Electricity Meter (SEM) processing boards mounted near electrical outlets. Each electrical appliance in the household connects to a corresponding SEM processing board, which receives actuator commands. The network also includes at least one subscriber processing circuitry positioned to subscribe to specific sensor data topics from these appliances, storing data and performing analysis of the sensor data to monitor electrical load of individual ones of electrical appliances. Each SEM processing board periodically monitors appliance sensor data, publishing any changes to an intermediate agent of a Data Distribution Service (DDS) processing circuitry located centrally in the household. The intermediate agent stores the published data and controls its transmission to the subscriber processing circuitry. The system ensures efficient data handling and analysis, enhancing real-time energy monitoring and management within the household.

The application relates to a DDS-based avionics multi-protocol conversion method and device and a readable storage medium, adopts the introduction of a mapping processing rule and is combined with a data distribution service DDS, realizes efficient subscription of information through fuzzy matching, and improves the management of idle threads in multi-thread-based multi-protocol data collection. In the application, the XML mode metadata mapping method and the data distribution service DDS are adopted to realize mutual communication between different bus devices, the universality and multiplicity are higher than those of the prior art, and excellent interactivity is also achieved. When data is distributed, in order to improve the data interaction efficiency of simulation members, the fuzzy theory is introduced and the efficient subscription organization mode of segmented complete coverage is adopted in combination with the content logic coverage of the subscription user.