Information transmission method and device for distributed joint simulation system

Abstract

The invention provides an information transmission method and device for a distributed joint simulation system, and the method comprises the steps: determining a plurality of communication modes according to the communication demands of the distributed joint simulation system in different simulation scenes, and designing a corresponding communication protocol for each communication mode, generating a mapping relation among a simulation scene, a communication mode and a communication protocol in the simulation main node; establishing communication middleware, generating an object agent of the node in each simulation work node, establishing a unified communication protocol between the communication middleware and the object agents, and distributing the mapping relation to each object agent; and issuing the simulation scene or the communication mode determined by the user to the object agent through the communication middleware, so that the agent determines a corresponding communication protocol according to the mapping relationship, and converts the communication mode and the communication protocol of the node. According to the invention, the efficiency and reliability of information transmission are improved, and efficient and reliable information transmission support is provided for a joint combat simulation test.

Description

Technical Field

[0001] The present invention relates to the field of distributed simulation technology, and in particular to an information transmission method and device for a distributed joint simulation system. Background Art

[0002] With the continuous development of simulation technology, joint simulation systems are increasingly widely used in military, industrial, scientific research and other fields. Joint simulation systems usually need to connect simulation systems, facilities, devices and personnel distributed in different geographical locations and using different technical architectures through a network to achieve collaborative simulation. Existing distributed simulation mechanisms (such as HLA, etc.) are mainly based on data communication. In addition to the underlying communication infrastructure, joint simulation must also provide interconnection support for the application layer on the basis of communication.

[0003] In the field of military simulation, the existing distributed combat simulation systems have different responsibilities and different system architectures, making it difficult to complete cross-system joint simulation. At the same time, the existing joint simulation standards are limited to specific industries or specific tools, and lack unified standards for integration, resulting in the inability of distributed heterogeneous combat simulation systems to be fully integrated into a larger test and exercise simulation system. In addition, since the simulation mechanisms and communication methods of each system are different, the simulation system resources are self-contained, making the existing distributed joint combat simulation system insufficient in terms of heterogeneous system interconnection, data communication efficiency, and real-time performance, making it difficult to meet the needs of complex joint combat simulation scenarios. Summary of the invention

[0004] In view of this, the embodiments of the present application provide an information transmission method and device for a distributed joint simulation system, which solves the problem of information interaction between heterogeneous and remote systems through the object interoperability technology of the multi-mode communication mechanism and the external access gateway design, improves the efficiency and reliability of information transmission, and provides efficient and reliable information transmission support for joint combat simulation experiments.

[0005] The embodiment of the present application provides the following technical solution: an information transmission method for a distributed joint simulation system, comprising: According to the communication requirements of the distributed joint simulation system in different simulation scenarios, multiple communication modes are determined, corresponding communication protocols are designed for each communication mode, and a mapping relationship between the simulation scenario, the communication mode and the communication protocol is generated in the distributed joint simulation master node; Constructing a communication middleware for distributed joint simulation communication management, generating an object proxy of each distributed joint simulation working node in each working node, establishing a unified communication protocol between the communication middleware and each object proxy, and distributing the mapping relationship to each object proxy through the communication middleware; The simulation scenario or communication mode determined by the user in the distributed joint simulation master node is sent to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

[0006] According to an embodiment of the present application, the method further includes: While sending the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object proxies through the communication middleware, the communication protocol conversion start time and conversion duration are sent to each of the object proxies; If the current working node fails to complete the conversion of the communication protocol within the conversion time, the object agent of the current working node sends a conversion incomplete message to the distributed joint simulation master node through the communication middleware.

[0007] According to one embodiment of the present application, the method also includes: each of the object agents registers the attribute information of the working node to the communication middleware, so that other distributed joint simulation working nodes call remote objects according to the node registration information in the communication middleware; wherein the attribute information includes the node instance, naming and specified unique identification information.

[0008] According to one embodiment of the present application, the method also includes: when the communication middleware receives a remote call request to other working nodes sent by the object agent of any working node, the registration information of the working node is queried in the communication middleware to determine whether the working node has registered information and whether the registration information is complete, so as to verify the security of the working node.

[0009] According to one embodiment of the present application, the method also includes: designing an external access gateway, defining an interface of the external access gateway in the communication middleware, registering the external access gateway in the communication middleware, and configuring gateway parameters in the communication middleware to integrate the external access gateway into the communication middleware.

[0010] According to an embodiment of the present application, the method also includes: a heterogeneous system accesses the external access gateway through a loading unit, and transmits system data information in the form of a service interface or background transit; the service interface includes: WebService or RESTful API, and the background transit method includes a message queue or file transfer transit method.

[0011] According to an embodiment of the present application, the communication modes include a data publish / subscribe mode, a distributed object communication mode, a point-to-point communication mode and a broadcast communication mode.

[0012] The present application also provides an information transmission device for a distributed joint simulation system, comprising: A mapping relationship generation module is used to determine multiple communication modes according to the communication requirements of the distributed joint simulation system in different simulation scenarios, design a corresponding communication protocol for each communication mode, and generate a mapping relationship between the simulation scenario, the communication mode and the communication protocol in the distributed joint simulation master node; A communication middleware construction module is used to construct a communication middleware for distributed joint simulation communication management, generate an object proxy of each distributed joint simulation working node in the working node, establish a unified communication protocol between the communication middleware and each object proxy, and distribute the mapping relationship to each object proxy through the communication middleware; An instruction issuing module is used to issue the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

[0013] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification include at least the following: The embodiments of the present invention construct the communication relationship between the communication middleware and the object proxy through a multi-mode communication mechanism and an external access gateway design, which can realize the efficient interconnection of heterogeneous and remote systems, solve the shortcomings of the traditional distributed simulation mechanism in the interconnection of heterogeneous systems, and improve the reliability of the interconnection between the systems. In addition, the embodiments of the present invention design an external access gateway, which supports the external system to access the gateway component through the loading part, transmit system data information in the form of a service interface, and also supports the transmission of information such as databases or files in the form of background transfer, which improves the scalability and reliability of the system, enhances the user interaction experience, and supports a variety of data formats and protocols, which can easily access new simulation systems or devices and has good scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic flow chart of an information transmission method for a distributed joint simulation system according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of an information transmission device for a distributed joint simulation system according to a first embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of an information transmission device for a distributed joint simulation system according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0016] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0017] The following describes the implementation methods of the present application through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0018] like Figure 1 As shown, an embodiment of the present invention provides an information transmission method for a distributed joint simulation system, comprising: S101. According to the communication requirements of the distributed joint simulation system in different simulation scenarios, multiple communication modes are determined, corresponding communication protocols are designed for each communication mode, and a mapping relationship between the simulation scenario, the communication mode and the communication protocol is generated in the distributed joint simulation master node; S102. Construct a communication middleware for distributed joint simulation communication management, generate an object proxy of each distributed joint simulation work node in each work node, establish a unified communication protocol between the communication middleware and each object proxy, and distribute the mapping relationship to each object proxy through the communication middleware; S103. Send the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

[0019] The embodiment of the present invention is aimed at a complex distributed joint simulation system. In order to realize efficient interconnection between various systems, a communication middleware is constructed, and an object agent is set for each system working node, and a unified communication protocol and communication interface are established between the communication middleware and the object agent. Before interconnection, a mapping relationship between simulation scenarios, communication modes and communication protocols is first formed in the system master node, and the mapping relationship is pre-issued as a cache file to each object agent. When the system master node receives a communication mode switching instruction or a simulation scene switching instruction, it only needs to forward the corresponding communication mode or simulation scene to each object agent through the communication middleware, and does not need to perform complex data processing and analysis and calculation processes, etc., which will not affect the operating efficiency of the system master node; when each object agent receives a communication mode or simulation scene switching message, it obtains the corresponding communication protocol from the mapping relationship table cached locally and completes the switching of the communication mode and the conversion of the communication protocol in the local node, thereby realizing efficient and reliable intercommunication.

[0020] The communication middleware in this embodiment is the core component of the multi-mode communication mechanism, which is responsible for managing communication modes, protocols, data transmission, etc. In specific implementation, the construction process of the communication middleware mainly includes: (1) setting up a communication mode manager, which is responsible for registering, managing and scheduling different communication modes; (2) setting up a data transmission engine, which is responsible for data encapsulation, transmission and decapsulation, and can support multiple data formats (such as JSON, XML, binary, etc.); (3) setting up a message queue, which is used to cache and schedule data to be transmitted to ensure the order and reliability of data transmission; (4) setting up a load balancer. Since the communication middleware is responsible for the transmission and management of multiple data, it is necessary to set up a load balancer to dynamically allocate communication resources according to the network load to avoid network congestion.

[0021] The present embodiment sets object proxy for each working node in each distributed joint simulation system, which is used to simplify the complexity of data transmission, control management and remote object calling. The main purpose of its setting is to provide an intermediate layer between working nodes and working nodes, and between working nodes and master nodes, so that each node can call remote objects or interact with remote objects like calling local objects, without having to care about the network communication details of the bottom layer. Moreover, each node interacts with remote objects through object proxy, which reduces the coupling degree between nodes. On the other hand, object proxy can also provide guarantee for the security of this node, verify the identity and authority of the interactive node, and object proxy can also provide data caching function to reduce repeated calls to remote objects.

[0022] In some embodiments of the present invention, the communication modes include data publish / subscribe mode, distributed object communication mode, point-to-point communication mode and broadcast communication mode. In specific implementation, the data publish / subscribe mode is suitable for large-scale data distribution scenarios, where simulation nodes can publish data and subscribe to data of interest; the distributed object communication mode is suitable for low-latency, high-real-time interactive scenarios, and supports direct object calls between simulation nodes; the point-to-point communication mode is suitable for direct communication between two nodes; the broadcast communication mode is suitable for one-to-many data broadcast scenarios; the appropriate communication mode is determined according to the communication requirements of the system simulation scenario.

[0023] In order to ensure the reliability and real-time performance of the interconnection between nodes in the simulation system, in some embodiments of the present invention, the method further includes: sending the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, and sending the start time of the communication protocol conversion and the conversion duration to each of the object agents; if the current working node fails to complete the conversion of the communication protocol within the conversion duration, the object agent of the current working node sends a conversion incomplete message to the distributed joint simulation master node through the communication middleware.

[0024] In the specific implementation, the master node in the simulation system generates the communication protocol conversion start time and conversion duration while sending the communication mode or simulation scenario to each object agent, and at the same time sends the communication protocol conversion start time and conversion duration to the object agent of each working node through the communication middleware, so that each working node performs the communication protocol conversion action at the unified communication protocol conversion time, thereby ensuring the unity and real-time performance of the system. On the other hand, the object agent of each working node determines whether the current node completes the protocol conversion within the conversion duration. If the current node fails and the conversion is not completed after the conversion duration, the object agent of the node sends a conversion incomplete message to the master node of the system through the object agent of the node, so that the node can be further tested and maintained; if the system master node does not receive the conversion incomplete message fed back by the working node after the conversion duration, it is considered that the working node has successfully completed the mode switching and communication protocol conversion. This embodiment further improves the unity and reliability of the system by setting the communication protocol conversion start time and conversion duration, thereby improving the efficiency and reliability of information transmission.

[0025] In order to facilitate remote calls between nodes, in some embodiments of the present invention, the method further includes: each object proxy registers the attribute information of the working node with the communication middleware, so that other distributed joint simulation working nodes can call remote objects according to the node registration information in the communication middleware; wherein the attribute information includes node instance, naming and specified unique identification information. Each working node registers the attribute information of the node in the communication middleware to ensure that other working nodes can find and call it. In specific implementation, the node instance refers to a specific object created according to a class or template of the node; the naming is intended to facilitate other simulation nodes to find and access the node by name; the specified unique identification information is so that other simulation nodes can find it accurately. Specifically, the identification information can be a string that can contain the function description, location information, etc. of the node.

[0026] When making mutual calls between nodes, in order to ensure the security of data calls, in some embodiments of the present invention, the method further includes: when the communication middleware receives a remote call request to other working nodes sent by the object agent of any working node, the registration information of the working node is queried in the communication middleware to determine whether the working node has registered information and whether the registration information is complete, so as to verify the security of the working node. Through the above-mentioned verification method, the security of mutual calls between nodes is guaranteed, ensuring that only legitimate simulation nodes can register and access remote objects.

[0027] In some embodiments of the present invention, the method also includes: designing an external access gateway, defining an interface of the external access gateway in the communication middleware, registering the external access gateway with the communication middleware, and configuring gateway parameters in the communication middleware to integrate the external access gateway into the communication middleware.

[0028] In this embodiment, an external access gateway is designed, which is responsible for connecting external systems (such as heterogeneous simulation systems, databases, file systems, etc.) to the joint simulation platform to achieve data interaction and sharing.

[0029] In the specific implementation, before designing the external access gateway, it is necessary to first clarify the type of external system to be accessed, such as database, file system, Web service, other simulation system, etc.; determine the data transmission method and data format according to the type of external system, such as real-time data stream, batch data transmission, file transmission, etc., and the data format is JSON, XML, binary data, etc. Then, according to the above-determined content, design the architecture of the external access gateway, and the gateway architecture may include the following components: protocol adapter: support multiple communication protocols, such as HTTP, WebSocket, FTP, TCP / IP, etc., to achieve communication between external systems and gateways; data format converter: convert the data format of the external system into the standard format within the joint simulation system; service interface: provide a unified API interface for external system calls; background transfer service: support database or file transfer transmission; security module: implement identity authentication, data encryption and access control.

[0030] In specific implementation, the method also includes: the heterogeneous system accesses the external access gateway through the loading unit, and transmits system data information in the form of a service interface or background transit; the service interface includes: Web Service or RESTful API, and the background transit method includes a message queue or file transfer transit method.

[0031] like Figure 2 As shown, the present application also provides an information transmission device for a distributed joint simulation system, comprising: A mapping relationship generation module is used to determine multiple communication modes according to the communication requirements of the distributed joint simulation system in different simulation scenarios, design a corresponding communication protocol for each communication mode, and generate a mapping relationship between the simulation scenario, the communication mode and the communication protocol in the distributed joint simulation master node; A communication middleware construction module is used to construct a communication middleware for distributed joint simulation communication management, generate an object proxy of each distributed joint simulation working node in the working node, establish a unified communication protocol between the communication middleware and each object proxy, and distribute the mapping relationship to each object proxy through the communication middleware; An instruction issuing module is used to issue the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

[0032] In specific implementation, the instruction issuing module is also used to issue the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, and at the same time issue the start time and conversion duration of the communication protocol conversion to each of the object agents; if the current working node fails to complete the conversion of the communication protocol within the conversion duration, the object agent of the current working node sends a conversion incomplete message to the distributed joint simulation master node through the communication middleware.

[0033] When implementing it, Figure 3 As shown, the device also includes an information registration module, which is used for each object agent to register the attribute information of the working node with the communication middleware, and for other distributed joint simulation working nodes to call remote objects according to the node registration information in the communication middleware; wherein the attribute information includes the node instance, naming and specified unique identification information.

[0034] When implementing it, Figure 3 As shown, the device also includes a verification module, which is used to query the registration information of the working node in the communication middleware when the communication middleware receives a remote call request to other working nodes sent by the object agent of any working node, and determine whether the working node has registered information and whether the registration information is complete, so as to verify the security of the working node.

[0035] When implementing it, Figure 3 As shown, the device also includes: an external access gateway design module, which is used to design an external access gateway, define the interface of the external access gateway in the communication middleware, register the external access gateway with the communication middleware, and configure gateway parameters in the communication middleware to integrate the external access gateway into the communication middleware.

[0036] The embodiment of the present invention constructs the communication relationship between the communication middleware and the object proxy through a multi-mode communication mechanism and an external access gateway design, which can realize the efficient interconnection of heterogeneous and remote systems, solve the shortcomings of the traditional distributed simulation mechanism in the interconnection of heterogeneous systems, and improve the reliability of the interconnection between the systems. In addition, the embodiment of the present invention designs an external access gateway, which supports the external system to access the gateway component through the loading part, transmits system data information in the form of a service interface, and can also support the transmission of information such as databases or files in the form of backend transfer, which improves the scalability and reliability of the system, enhances the user interaction experience, and supports a variety of data formats and protocols, which can easily access new simulation systems or devices and has good scalability.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An information transmission method for a distributed joint simulation system, characterized in that: include: According to the communication requirements of the distributed joint simulation system in different simulation scenarios, multiple communication modes are determined, corresponding communication protocols are designed for each communication mode, and a mapping relationship between the simulation scenario, the communication mode and the communication protocol is generated in the distributed joint simulation master node; Constructing a communication middleware for distributed joint simulation communication management, generating an object proxy of each distributed joint simulation working node in each working node, establishing a unified communication protocol between the communication middleware and each object proxy, and distributing the mapping relationship to each object proxy through the communication middleware; The simulation scenario or communication mode determined by the user in the distributed joint simulation master node is sent to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

2. The information transmission method for a distributed joint simulation system according to claim 1, characterized in that: The method further comprises: While sending the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object proxies through the communication middleware, the communication protocol conversion start time and conversion duration are sent to each of the object proxies; If the current working node fails to complete the conversion of the communication protocol within the conversion time, the object agent of the current working node sends a conversion incomplete message to the distributed joint simulation master node through the communication middleware.

3. The information transmission method for a distributed joint simulation system according to claim 1, characterized in that: The method further comprises: Each object agent registers the attribute information of the working node with the communication middleware, so that other distributed joint simulation working nodes can call remote objects according to the node registration information in the communication middleware; wherein the attribute information includes the node instance, naming and designated unique identification information.

4. The information transmission method for a distributed joint simulation system according to claim 3, characterized in that: The method further comprises: When the communication middleware receives a remote call request to other working nodes sent by the object agent of any working node, the registration information of the working node is queried in the communication middleware to determine whether the working node has registered information and whether the registration information is complete, so as to verify the security of the working node.

5. The information transmission method for a distributed joint simulation system according to claim 1, characterized in that: The method further comprises: An external access gateway is designed, an interface of the external access gateway is defined in the communication middleware, the external access gateway is registered in the communication middleware, and gateway parameters are configured in the communication middleware to integrate the external access gateway into the communication middleware.

6. The information transmission method for a distributed joint simulation system according to claim 5, characterized in that: The method also includes: the heterogeneous system accesses the external access gateway through the loading unit, and transmits system data information in the form of a service interface or background transfer; the service interface includes: Web Service or RESTful API, and the background transfer method includes a message queue or file transfer transfer method.

7. The information transmission method for a distributed joint simulation system according to claim 1, characterized in that: The communication modes include data publish / subscribe mode, distributed object communication mode, point-to-point communication mode and broadcast communication mode.

8. An information transmission device for a distributed joint simulation system, characterized in that: include: A mapping relationship generation module is used to determine multiple communication modes according to the communication requirements of the distributed joint simulation system in different simulation scenarios, design a corresponding communication protocol for each communication mode, and generate a mapping relationship between the simulation scenario, the communication mode and the communication protocol in the distributed joint simulation master node; A communication middleware construction module is used to construct a communication middleware for distributed joint simulation communication management, generate an object proxy of each distributed joint simulation working node in the working node, establish a unified communication protocol between the communication middleware and each object proxy, and distribute the mapping relationship to each object proxy through the communication middleware; An instruction issuing module is used to issue the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, so that the object agent determines the communication protocol corresponding to the simulation scenario or communication mode according to the mapping relationship, switches the communication mode of the working node, and converts the communication protocol of the working node.

9. The information transmission device for a distributed joint simulation system according to claim 8, characterized in that: The instruction issuing module is also used to issue the simulation scenario or communication mode determined by the user in the distributed joint simulation master node to each of the object agents through the communication middleware, and at the same time issue the start time and conversion duration of the communication protocol conversion to each of the object agents; if the current working node fails to complete the conversion of the communication protocol within the conversion duration, the object agent of the current working node sends a conversion incomplete message to the distributed joint simulation master node through the communication middleware.

10. The information transmission device for a distributed joint simulation system according to claim 8, characterized in that: The device also includes: An information registration module is used for each object agent to register the attribute information of the working node with the communication middleware, and for other distributed joint simulation working nodes to call remote objects according to the node registration information in the communication middleware; wherein the attribute information includes the node instance, naming and specified unique identification information.

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