CN1154045C - A cross-platform co-simulation system - Google Patents

Abstract

A cross-platform co-simulation system consists of a simulation main control platform, a simulation signal source and N different computer simulation platforms connected through a computer network. The simulation main control platform includes the simulation main control platform body, the scheduling interface module and the main control module to realize system configuration and monitoring; each computer simulation platform includes its computer simulation platform body, scheduling interface module and simulation modules for completing various simulation tasks . The invention realizes cross-platform co-simulation (including remote). In addition, the flexible interconnection between different types of computer simulation platforms is realized, and the simulation efficiency is improved.

Description

A cross-platform co-simulation system

The invention relates to a cross-platform co-simulation system.

The development of modern communication systems makes communication systems and communication devices more and more complex. The increase in the complexity of the communication system makes the time and energy spent on analysis and design rise rapidly. In order to quickly adopt new technologies in commercial products, it is required that the design work can be completed in time and economically; at the same time, in order to make the system have the best performance under certain conditions, it is necessary to understand the influence of various parameters on performance and the complex interdependencies between them. To achieve the above goals, the use of computer simulation is a very effective method. Computer simulation can play an important role in all stages of communication system design and engineering realization. In the early concept definition stage, high-level technical conditions can be derived through simulation; during the design and development process, simulation and hardware development determine the final The technical conditions of the system and check the impact of the subsystem on the performance of the whole system; in the running situation, the simulation can be used as a tool for troubleshooting and predicting the life of the system. Now, due to the development of computer technology, the simulation of communication systems has become more and more common, and has become an important tool for designing and analyzing communication systems today. Many professional software companies have developed a large number of computer simulation modules (software) to help the modeling, analysis and design of communication systems. The more commonly used ones are HP's ADS, MathWorks' SIMULINK, and so on.

Different simulation software has its own characteristics and scope of application. At present, there is no simulation software that can meet all the simulation needs of a field. Sometimes it is necessary to implement a relatively complex system, and different parts of the system have different requirements on the simulation software, so the system may use a variety of different simulation software to cooperate with each other to realize the simulation. At the same time, an obvious shortcoming of the computer simulation method is the huge amount of calculation, especially for a complex communication system. Due to the limited computing power of the computer, sometimes it takes several months to perform a simulation. In order to shorten the simulation time, it is necessary to divide the simulation task into multiple modules and put them on multiple computers for parallel simulation to reduce the calculation amount of each computer and improve the calculation speed; in some cases, it is also necessary to connect different simulation software together , using the pipeline operation method to improve the simulation speed. However, since different simulation software is developed by different companies, there is not necessarily an interconnection interface between them, and these software are usually applied to different operating systems (such as Microsoft Windows, UNIX, etc.) and different types of computers (such as PCs, workstations, etc.), it is even more difficult to interconnect.

The purpose of the present invention is to provide a cross-platform co-simulation system, which can unite computer simulation platforms in different regions and use different types into a unified interface, and through the flexible configuration of computer network topology, different The simulation modules cooperate with each other to complete complex simulation tasks with high efficiency.

In order to achieve the above object, the present invention is a cross-platform joint simulation system, which is connected by a simulation main control platform, a simulation signal source and N different computer simulation platforms through a computer network, and the simulation signal source , is controlled by the simulation master control platform to generate the original data required for simulation; the simulation master control platform includes a simulation master control platform body, a scheduling interface module connected with the simulation master control platform body, and the scheduling interface module The realization of interconnection is the main control module for system configuration and monitoring; each computer simulation platform includes its computer simulation platform body, a dispatching interface module interconnected with the computer simulation platform body, and a dispatching interface module interconnected with the dispatching interface module. A simulation module that completes various simulation tasks. Wherein: the scheduling interface module includes: a data scheduling layer, which is located on the network service layer provided by the simulation main control platform body, and is connected with it, and is responsible for sending the data sent by the network service layer according to the data type and the main The configuration of the control module is processed, and the data and commands that need to be sent are received and sent; the simulation data unit is located on the upper layer of the data scheduling layer and is connected to it, and is used for data exchange with each simulation module. The processed data is sent to the simulation module or the data processed by the simulation module is sent to the next computer simulation platform of the simulation process; the control command unit is located at the upper layer of the data scheduling layer and is connected to it, responsible for the simulation control command Generate and interpret. The main control module includes: a simulation monitoring unit, which is used to complete the monitoring and control of the simulation process of each computer simulation platform, that is, the simulation start, interruption, end control and monitoring of the status of each computer simulation platform; the simulation structure setting unit, mainly according to different Simulation requirements, set the destination address and source address of each section of simulation data flow to determine the topology of the entire co-simulation system; simulation parameter configuration unit mainly determines the simulation parameters according to the simulation requirements.

In the above-mentioned cross-platform co-simulation system, the topology structure of the computer network is a tree structure.

In the above-mentioned cross-platform co-simulation system, the topology of the computer network is a ring structure.

In the above-mentioned cross-platform co-simulation system, the computer network may be a local area network, or a wide area network, or the Internet.

By adopting the above-mentioned technical scheme, simulation modules located in different regions can cooperate with each other to carry out joint simulation through computer network, which breaks the limitation of regions and realizes cross-platform joint simulation (including remote). In addition, by scheduling interface modules, flexible interconnection between different types of computer simulation platforms (that is, different host types, different operating systems, and different simulation software) is realized, and the flexible configuration of the co-simulation network topology is achieved. Data exchange between simulation modules, while the simulation process is like a pipeline operation, when a simulation data is processed by a simulation module, it is immediately transmitted to the next simulation module through the scheduling interface module, so that the simulation efficiency can be improved.

The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

Fig. 1 is the structural representation of a kind of cross-platform co-simulation system of the present invention;

Fig. 2 a is the logic block diagram when the topology structure of the network is configured as a tree structure in the present invention;

Fig. 2b is a logical block diagram when the topology of the network is configured as a ring structure in the present invention;

Fig. 3 is the structural block diagram of simulation main control platform of the present invention;

Fig. 4 is a structural block diagram of the computer simulation platform of the present invention.

As shown in Fig. 1, Fig. 2a, Fig. 2b, a kind of cross-platform co-simulation system of the present invention, it is by a simulation main control platform 1, a simulation signal source and N different computer simulation platforms 2～n (namely: Computers running on different operating systems such as Microsoft Windows or any kind of UNIX with different emulation modules) are connected through a computer network. Described simulation signal source 1 ', is subjected to the control of simulation main control platform 1 to generate the original data needed for simulation; Described simulation main control platform 1 comprises simulation main control platform body 11, and this simulation main control platform body 11 The dispatching interface module 12 that is connected, and the main control module 13 (realized by software) that is interconnected with this dispatching interface 12 modules to system configuration and monitoring; Described each computer simulation platform 2～n comprises its computer simulation respectively Platform body 21, 31...10N+1, the scheduling interface module 12 interconnected with the computer simulation platform body, and the simulation module (realized by software) 23 interconnected with the scheduling interface module to complete various simulation tasks , 33...10N+3. The computer network may be a local area network, a wide area network, or the Internet, and the topology of the computer network may be a tree structure or a ring structure.

As shown in Figure 4, the described scheduling interface module 12 includes: a data scheduling layer 112, which is located on the network service layer 211 provided by the simulation main control platform body 21, and is connected with it, responsible for network service The data sent by the layer is processed according to the data type and the configuration of the main control module 13, and the data and commands to be sent are received and sent; the simulation data unit 113 is located on the upper layer of the data scheduling layer 112 and is connected to it , used for data exchange with each simulation module 22, the data to be processed is sent to the simulation module or the data processed by the simulation module is sent to the next computer simulation platform of the simulation process; the control command unit 114 is located in the It is connected to the upper layer of the data scheduling layer 112 and is responsible for the generation and interpretation of simulation control commands.

As shown in Figure 3, described main control module 13 comprises: emulation monitoring unit 131, is used for completing the emulation process monitoring and control of each computer emulation platform, namely emulation start, interruption, end control and each computer emulation platform status Monitoring; the simulation structure setting unit 132 mainly sets the destination address and source address of each section of simulation data flow according to different simulation requirements, so as to determine the topology of the entire co-simulation system; the simulation parameter configuration unit 133 mainly according to the simulation requirements Determine the simulation parameters.

The present invention is based on the fact that most of the current operating systems and network types support the TCP/IP protocol stack, and most of the emulation software provides interfaces in C language, so that C language can be used for each simulation The interface module is developed by the software, and the data exchange between the simulation modules in the network is realized through the socket interface call in the C language library function.

Since the network layer of the TCP/IP protocol stack uniquely identifies the host through the IP address of the host, the computer network can be set as Arbitrary logical structure.

In summary, the present invention utilizes the TCP/IP protocol stack supported by various operating systems and various networks to realize the interconnection of simulation platforms, provides a parallel simulation structure or a pipeline simulation structure of multiple computers, and shares simulation operations It can speed up the simulation speed, realize the synchronous processing of the simulation data, and realize the flexible configuration of the topology by configuring the source address and destination address of each segment of the simulation data flow. The present invention can also realize remote joint simulation of computer simulation platforms in different regions through various computer communication networks.

Claims (4)

1. cross-platform combined simulation system is characterized in that: it is connected by computer network with N different computer simulation platform by an emulation master control platform, a dummy source,

Described dummy source is subjected to the control of emulation master control platform to generate the needed raw data of emulation;

Described emulation master control platform comprises emulation master control platform body, the dispatch interface module that links to each other with this emulation master control platform body, and with the realization of this dispatch interface module interconnects main control module to system configuration and monitoring;

Described each computer simulation platform comprise respectively its computer simulation platform body, with the dispatch interface module of this computer simulation platform body interconnection and with the emulation module of finishing various artificial tasks of this dispatch interface module interconnects; Wherein:

The dispatch interface module comprises:

The data dispatch layer, it is positioned on the web services layer that described emulation master control platform body provided, and links to each other with it, is responsible for data based this data type that web services layer is sent here and the configuration of main control module and handles, and receive data and the order that needs transmission, send;

The emulated data unit, it is positioned at the upper strata of described data dispatch layer and is attached thereto, be used for and each emulation module between exchanges data, the data that will handle send to emulation module or the data that emulation module disposes are sent to the next computer simulation platform of simulation flow;

The control command unit, it is positioned at the upper strata of described data dispatch layer and is attached thereto, and is responsible for the generation and the explanation of Simulation Control order;

Main control module comprises:

Simulation monitoring unit, the simulation process that is used to finish to each computer simulation platform monitor and control, i.e. emulation begins, the supervision of interruption, finishing control and each computer simulation platform state;

Simulation architecture is provided with the unit, and is main according to different emulation demands, sets the destination address and the source address of each section emulated data stream, to determine the topological structure of whole combined simulation system;

The simulation parameter dispensing unit is mainly determined simulation parameter according to the requirement of emulation.

2. a kind of cross-platform combined simulation system according to claim 1 is characterized in that: the topological structure of described computer network is a tree.

3. a kind of cross-platform combined simulation system according to claim 1 is characterized in that: the topological structure of described computer network is a loop configuration.

4. a kind of cross-platform combined simulation system according to claim 1 is characterized in that: described computer network can be a LAN (Local Area Network), also can be wide area network, or the Internet net.

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