130 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.

A system includes a scheduling device of a data distribution service (DDS) that determines bandwidth for communication of time sensitive communications between devices using the DDS in a time sensitive network (TSN). The scheduling device determines available bandwidth for communication of non-time sensitive communications of the control system using the DDS in the TSN, and controls communication of both the time sensitive and non-time sensitive communications in the TSN. The system also includes a traffic shaper of the TSN that receives a communication change from the control system at the TSN. The scheduling device changes one or more of the bandwidth for the communication of the time sensitive communications or the available bandwidth for the communication of the non-time sensitive communications in the TSN without restarting at least one network device of the TSN and while ensuring communications of both the time sensitive communications and the non-time sensitive communications.

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 discloses an aircraft data distribution service method and system, a medium and a program product, and relates to the field of data management.The method comprises the steps that after an aircraft data distribution service architecture is powered on and started, registration information sent by aircraft parameter service software is audited and verified through data collection and interface service software, and after audit verification is passed, the aircraft data distribution service architecture is started; the airplane parameter service software completes registration on the data acquisition and interface service software; the application software sends a registration message used for registration application to the aircraft parameter service software so as to audit information content of the registration message, after the audit is passed, a connection route is established through the aircraft parameter service software, and a random number is generated and sent to the application software; after receiving the random number, the application software sends a business application message to the aircraft parameter service software, the aircraft parameter service software audits the business application message, and after the auditing is passed, parameter distribution processing is executed according to business content in the business application message.

The invention provides a simulator networking method, system and device based on data distribution service and a medium, and the method comprises the steps: determining all interface data needed by simulator networking according to an interface definition language determination rule, and obtaining an interface definition language file; generating a publishing and subscribing communication template program of the data distribution service in the data distribution service unit according to the interface definition language file in combination with an interface definition language template program generation tool; according to the interface definition language file, a simulator interface definition rule is combined, and a simulator interface program is generated; and mapping simulator interface data and data distribution network data according to the publish-subscribe communication template program and the simulator interface program. Simulator networking is achieved by mapping simulator interface data and data distribution network data in a modular mounting mode, the development process during networking function implementation is shortened, time delay and bandwidth consumption are reduced, and high efficiency and communication real-time performance during networking function implementation are improved.

The invention provides a simulator networking interface code generation method and device, equipment and a medium, and the method comprises the steps: disassembling a nested structure body in a target interface definition language file, and obtaining the information of the disassembled structure body; generating a first interface control document corresponding to the data distribution service network according to the disassembled structure body information; generating a second interface control document corresponding to the simulator network according to the first interface control document and a simulator network data definition rule; and generating a simulator networking interface code according to the data distribution service data definition rule, the simulator network data definition rule and the second interface control document. According to the method, networking between the data distribution service and the simulator can be achieved, manual interface definition and butt joint do not need to be manually conducted in the whole process, the development speed and development efficiency of networking between the data distribution service and the simulator are improved, and human factor errors caused by manual interface processing are effectively avoided.

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 DDS-based simulation test method and device, a storage medium and an electronic device.The method comprises the steps that a source data distribution service DDS message sent by a to-be-tested service module is monitored; a pre-configured relation configuration table is read, and the relation configuration table is used for storing a first mapping relation between the source DDS message and the message structure of the response DDS message and a second mapping relation between the message structure and the test data; simulating and arranging a response DDS message of the source DDS message based on the relationship configuration table; and sending a response DDS message to the service module. Through the embodiment of the invention, the technical problem that the test data cannot be flexibly provided for the to-be-tested service module in the test process in the related technology is solved, and the flexible self-definition of the test flow and the test data in the DDS message simulation test process is realized.

The invention relates to a service state notification method and device, electronic equipment and a storage medium, and the method comprises the steps: calling a service initialization interface of an SOA interface layer through an application layer to initialize a target service, and calling a data distribution service interface through the SOA interface layer to initialize a data distribution service layer, executing a discovery process of the data distribution service through a data distribution service layer, matching a second data reader and a second data writer under the discovered target service with the first data reader and the first data writer which are created initially, marking a service state of the target service according to a matching result, and sending the target service to the data distribution service layer; the marking process conforms to the data distribution service standard, and the universality and accuracy of service state notification are 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.

The invention relates to the technical field of robots, and discloses a cross-platform robot operating system and method, a robot and a medium, the system comprises an operating system layer, a function library layer and a distributed node layer; the operating system layer is configured to provide an application programming interface for accessing system resources for the function library layer based on preset operating systems, and abstracts differences among different preset operating systems through the application programming interface; the function library layer is configured to access system resources through an application programming interface and realize distributed communication based on a data distribution service protocol; the distributed node layer is used for realizing development and operation of application nodes, and the application nodes are mutually identified in a network based on distributed communication and establish communication channels; and the distributed node layer performs data interaction with an external robot operating system through distributed communication. The problem that in the prior art, a robot operating system is poor in compatibility and adaptability is solved.

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.

The present invention provides a communication middleware for heterogeneous networks, belonging to the field of distributed communication technology, including a proxy module arranged on each drone in a drone cluster, the proxy modules on different drones realize inter-machine communication through a data distribution service NetDDS; the proxy module is used to receive a request sent by a communication entity of a drone in the drone cluster, establish a tunnel of a corresponding topic according to the request, so that the request is transmitted to the proxy module on the target drone through the tunnel via the data distribution service NetDDS, and the request is sent to the communication entity of the target drone through the proxy module on the target drone. By adopting such a proxy module and tunnel mechanism, the present invention effectively solves the challenge of inter-machine communication and provides an efficient and reliable communication environment for drone cluster applications.

The present invention discloses an unmanned vehicle data distribution method based on fast data path processing. Based on the fast data path processing module, packets are captured before they are received in the operating system kernel space; packets belonging to data distribution are verified through the fast data path processing module and forwarded from the kernel state to the user state; the program compiled by the fast data path processing module is loaded into the operating system kernel and mounted on a specified network interface; the user memory mapping mechanism of the fast data path processing module is utilized to create memory in the user state for data transmission between the kernel state program and the user state program; application programs are deployed in the user space, and data exchange is performed with the fast data path program in the kernel space through user memory mapping to receive and process packets; the communication process specified by the data distribution service protocol is processed in the user space.

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.

The present invention relates to the field of automobile software technology, and specifically provides a vehicle-side service communication configuration method, system, device and storage medium. It includes obtaining vehicle demand information to configure the usage scenarios and functions of vehicle-side services, and building a service-oriented architecture (SOA) service model of vehicle-side services based on this. The SOA service model configures the domain identity (DomainID) value and the topic (Topic) unit parameters based on the data distribution service (DDS) communication protocol. And the DomainID value and the Topic unit parameters are set as communication parameters between functional domains. The code automatic generation module of the vehicle-side code generator generates the communication code of the vehicle-side application corresponding to each functional domain according to the communication parameters. The present invention makes the communication between services more flexible by modeling the vehicle-side function SOA service, DDS becomes a service component, and the service interface communication is configured. On the basis of the DDS standard, a unified message structure is defined and the data transmission under the same topic is achieved through the publish / subscribe communication model.

The invention discloses a data communication method, device and equipment and a computer readable storage medium, which are applied to the technical field of data transmission, and comprise the following steps: receiving data distribution service data by using a first data distribution service, and sending the data distribution service data to a second data distribution service; the data distribution service data is data of an operating system; the first data distribution service and the second data distribution service are deployed on an operating system with a system-on-chip; performing inverse analysis on the data distribution service data by using the second data distribution service to obtain network data; sending the network data to the restricted operating system; the limited operating system is a resource-limited operating system. Compared with the situation that a current limited operating system and an operating system with a system-on-chip cannot communicate by utilizing a data distribution service, the method has the advantages that the data distribution service is arranged on the operating system, so that the limited operating system and the multi-core system can efficiently communicate by utilizing the data distribution service.

The present invention provides a simulator networking method, system, device and medium based on data distribution service, including: determining rules according to the Interface Definition Language (IDL) to determine all interface data required for simulator networking, and obtaining an IDL file; generating a publish-subscribe communication template program for data distribution service in the data distribution service unit according to the IDL file in combination with an IDL template program generation tool; generating a simulator interface program according to the IDL file in combination with simulator interface definition rules; mapping simulator interface data and data distribution network data according to the publish-subscribe communication template program and the simulator interface program. By mapping simulator interface data and data distribution network data in a modular mounting manner, simulator networking is realized, the development process for implementing the networking function is shortened, time delay and bandwidth consumption are reduced, and the efficiency and communication real-time performance for implementing the networking function are improved.

The invention provides a vehicle fault diagnosis method and architecture, and relates to the technical field of intelligent automobiles. Under the condition that the load of a first processor set in the at least two sets of processor sets is abnormal, a first data acquisition node of a second processor set with a normal load in the at least two sets of processor sets acquires working parameters of target function hardware associated with the first processor set by utilizing a first target data acquisition interface; and the first data acquisition node of the second processor set encapsulates the first parameter identifier on the working parameter of the target function hardware associated with the first processor set, and then releases the working parameter in the data distribution service. Therefore, even if the load of the first processor set is abnormal, the working parameters of the target function hardware associated with the first processor set can still be acquired, so that'dynamic scaling migration 'of parameter acquisition can be realized, and the working parameters of the target function hardware are encapsulated with the first parameter identifier and are published in the data distribution service; and safety island subscription is facilitated.

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 present invention discloses a vehicle remote diagnosis management method, which subscribes to first fault diagnosis information and obtains second fault diagnosis information based on a bus through a first master node, and publishes the first fault diagnosis information and the second fault diagnosis information; based on a data distribution service, subscribes to the first fault diagnosis information and the second fault diagnosis information published by the first master node through a second master node; and sends the first fault diagnosis information and the second fault diagnosis information subscribed by the first master node and / or the second master node to a terminal device through the first master node and / or the second master node. The present invention combines the network system of the vehicle to diagnose various traditional faults on the vehicle, as well as diagnose abnormalities of various embedded controller hardware, systems, and applications, completes the complete vehicle diagnosis of traditional diagnosis and vehicle applications, and the remote PC terminal and the cloud vehicle diagnosis management, thereby improving the ability to diagnose vehicle faults.

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.