84 results about "Data Distribution Service" patented technology

The invention relates to a DDS communication-based robot and a multi-robot obstacle avoidance method, and the robot comprises a sensing module which is used for obtaining self state information and surrounding environment information; the communication module and the communication network are used for sharing state information and surrounding environment information among multiple robots; the decision module comprises a local planner and a conflict manager, the conflict manager is used for generating a global obstacle avoidance path according to an obstacle avoidance strategy when a conflict risk exists, and the local planner is used for generating a local obstacle avoidance path based on an artificial potential field algorithm in the walking process according to the global obstacle avoidance planning path; and the control module is used for controlling the robot according to the path generated by the decision module. The characteristics of a communication network constructed by using a data distribution service protocol are utilized, the communication transmission delay among the robots is reduced, the real-time performance of an obstacle avoidance strategy is ensured, and meanwhile, distributed cooperative obstacle avoidance among the multiple robots is realized, so that the defect of centralized control is avoided.

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 relates to an unmanned aerial vehicle cluster task dynamic recombination system and method. The system comprises a task control program, a module engine, a program API interface, a task upgrading program, an ROS2 data distribution service and a plurality of task modules. The task control program controls the starting, stopping and running state monitoring function of each module, the module engine is responsible for managing the starting, stopping and running states of the modules, the program API interface is responsible for receiving an external task upgrading request or task configuration request, the task upgrading program receives a platform external request, and the module engine is responsible for managing the starting, stopping and running states of the modules. The upgrade package information is sent to a program API interface of the task control program, the task module is a specific task processing unit, and the ROS2 data distribution service is used for realizing data interaction among the task modules. The problem that an unmanned aerial vehicle cluster system lacks the capability of performing dynamic adjustment according to actual conditions in the task execution process is solved, the flexibility, expandability and task execution efficiency of the system are remarkably improved, and effective application in a complex task environment is achieved.

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.

The invention provides a static discovery configuration method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the information of a subscriber and / or a publisher corresponding to a domain participant of a data distribution service domain through a dynamic discovery mechanism of the data distribution service domain; generating a static identifier of the domain participant according to the information of the subscriber and / or the publisher corresponding to the domain participant; static identifiers of the domain participants are configured in static discovery messages of the domain participants, and the static discovery messages are used for notifying other domain participants in the data distribution service domain of position information of the domain participants and identity information identified by the static identifiers; according to the method, static configuration information of a publisher and a subscriber of a data distribution service domain is exported from dynamic discovery, the deployment difficulty of static discovery is reduced, and a new static discovery message format is designed, so that a small amount of message information is carried in the static discovery process.

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.

A data distribution server includes a first interface for communicating with a plurality of content providers and a second interface for comminating with a plurality of wireless transceivers. The data distribution server includes memory storing operational instructions and processing circuitry operably coupled to the first and second interfaces and to the memory, where the processing circuitry is configured to execute the operational instructions to receive a portion of a data object from a content provider of the plurality of content providers, generate a plurality of data slices from the portion of the data object, distribute the plurality of data slices between the plurality of wireless transceivers for temporary storage and facilitate transmittal of the plurality of data slices to a user device that is adapted to wirelessly communicate with each wireless transceiver of the plurality of wireless transceivers.

The invention discloses a parameter adjustment method and device for a data distribution service, electronic equipment and a readable storage medium. The method comprises the steps that the network state of a vehicle-mounted network of a vehicle is obtained in response to the operation stage of the vehicle, and the network state is used for indicating the operation state of the vehicle-mounted network; based on the network state of the vehicle-mounted network, determining an adjustment strategy for adjusting an initial service quality parameter of a target data distribution service in the vehicle, the initial service quality parameter being pre-configured and completed according to a target service type to which the target data distribution service belongs when the vehicle is in a development stage; and adjusting the initial service quality parameter based on an adjustment strategy to obtain a target service quality parameter of the target data distribution service. According to the invention, the technical problem that a fixed service quality parameter configuration strategy is difficult to adapt to the dynamic change of a vehicle-mounted network environment is solved.

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.

Methods performed by a host platform operable in a Mobile User Objective System (MUOS) network are provided herein. A method according to some examples may include monitoring for outgoing data from a client, parsing the outgoing data to determine a priority level associated with the outgoing data, and queuing the outgoing data based on the priority level. Some methods may include monitoring for Secure Network Management Protocol (SNMP) traps to determine a floor status associated with an over-the-air interface. In some methods, if an SNMP trap is received indicating that the floor status associated with the over-the air interface is available, the queued outgoing data may be forwarded to a terminal for transmission via the over-the-air interface.

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.

Embodiments of the present application provide a data playback method and device, a vehicle and a storage medium. The method comprises: reading a plurality of types of data distribution service data queried on the vehicle to obtain structured data; the structured data at least comprises a topic and a corresponding original timestamp; determining a reference timestamp based on the original timestamp; determining data of the topic not exceeding the reference timestamp as playback data; and playing back the playback data. Embodiments of the present application directly read a plurality of types of data distribution service data queried on the vehicle to play back the data, without rewriting the data distribution service data into the memory, thereby improving the efficiency of data playback; and the reference timestamp is determined based on the original timestamp to adjust the rate of data playback.

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 relates to a cloud platform-oriented heterogeneous device management method and system, and the method comprises the steps: converting the original data of a physical device into standard format data through a standard hardware interface, and publishing the standard format data to a specified type of theme based on a real-time data distribution service; the physical equipment comprises perception type equipment and execution type equipment; the standard format data is found in a theme subscription mode, the found data is verified, format conversion is carried out on the verified data to obtain data in a target format, and the data in the target format is registered to a cloud platform; wherein the target format is a format which conforms to custom resources of the cloud platform; and creating a standardized instance of the physical equipment according to the data in the target format and a predefined standardized description template of the physical equipment, and managing the physical equipment based on the standardized instance of the physical equipment. Based on the scheme, unified management of the real-time heterogeneous equipment and the non-real-time heterogeneous equipment can be realized through the cloud platform.

The invention discloses a peer-to-peer distributed excitation system based on ATS and DDS fusion. The peer-to-peer distributed excitation system comprises a five-layer architecture and a redundancy control module, wherein a driving layer provides a hardware resource access interface; the network layer supports a physical network protocol and a communication link; the transmission layer realizes distributed data exchange through cross-layer fusion of ATS asynchronous traffic shaping and DDS data distribution service; the control layer dynamically coordinates multi-node resources and executes cross-layer strategy adjustment; the application layer deploys an excitation control and limit protection algorithm; the redundancy module adopts a full redundancy mode and comprises a heartbeat probing mechanism and fault switching of a main controller and a standby controller; the method aims to improve the reliability of the system, and eliminates the single-point fault risk through a completely peer-to-peer distributed architecture. Real-time data transmission is optimized; ATS and DDS are fused to realize microsecond deterministic communication; and the distributed cooperative control of the adjusting cabinet, the power cabinet and the field suppression cabinet is supported, and each controller has an independent priority and a seamless switching function.

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 discloses a service configuration method, device and system, and relates to the technical field of edge computing. The service configuration method is applied to a data distribution service device, and comprises the following steps: receiving service version information sent by a first electronic device; sending the service version information to a second electronic device, so that the second electronic device generates a version identification result based on the service version information; in response to service feedback information sent by the second electronic device, sending the service feedback information to the first electronic device, so that the first electronic device acquires service configuration information based on the service feedback information; and in response to service configuration information sent by the first electronic device, sending the service configuration information to the second electronic device, so that the second electronic device updates the service version based on the service configuration information. According to the embodiment of the application, the first electronic device and the second electronic device are interacted, the interaction pressure of a configuration center is distributed to the first electronic device, and the pressure of the configuration center can be reduced.

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 data transmission method, device and equipment. In the data transmission method, a data acquisition request sent by a first host through first data distribution service middleware is received, and the data acquisition request is used for acquiring target data in a second host; the data acquisition request comprises a first physical address; determining a second physical address according to the data acquisition request and a first mapping relation; the first mapping relationship comprises a mapping relationship between the first physical address and the second physical address; obtaining target data from the second host according to the second physical address; and sending the target data to the first host. Through the method, data transmission is carried out among different hosts which communicate by using the DDS communication middleware in a memory sharing manner, and compared with a scheme of carrying out data transmission by using a network communication protocol, data copying and data transmission protocol conversion can be reduced, so that the data transmission efficiency is greatly improved.

The application provides a DDS-based simulation test method and device, a storage medium and an electronic device, and the method comprises the following steps: listening to a source data distribution service (DDS) message sent by a service module to be tested; reading a pre-configured relationship configuration table, wherein the relationship configuration table is used for storing a first mapping relationship between a source DDS message and a response DDS message, and a second mapping relationship between a message structure and test data; simulating and arranging a response DDS message of the source DDS message based on the relationship configuration table; and sending the response DDS message to the service module. Through the embodiment of the application, the technical problem that the related art cannot flexibly provide test data for the service module to be tested in the test process is solved, and the flexible customization of the test process and test data in the DDS message simulation test process is realized.