CN104239631B - A kind of distributed emulation image synchronizing system based on HLA - Google Patents
A kind of distributed emulation image synchronizing system based on HLA Download PDFInfo
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- CN104239631B CN104239631B CN201410459403.2A CN201410459403A CN104239631B CN 104239631 B CN104239631 B CN 104239631B CN 201410459403 A CN201410459403 A CN 201410459403A CN 104239631 B CN104239631 B CN 104239631B
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Abstract
The invention discloses a kind of distributed emulation image synchronizing system based on HLA.The system mainly includes interactive agent module, image generation module, image sending module and system clock synchronization module.Image generation system can not limited the distributing emulation system accessed based on HLA by RTI bandwidth for the invention, overcome emulation data and generate the difficult problem that image cannot be consistent in time, it is ensured that image generation system synchronizes emulation with other units of emulation nation.
Description
Technical field
The present invention relates to a kind of distributed emulation image synchronizing system based on HLA, belongs to distributed simulation technology field.
Background technology
Emulation is economic Meta-Synthesis Method maximally effective so far, is the Strategic Technology for promoting scientific and technological progress.With
The development of science and technology, analogue system become increasingly complex, and the data interaction and communication accessed between each subsystem of analogue system is got over
Come more complicated, but the appearance of HLA solves this problem well.HLA (High Layer Architecture) can be by
Top layer system and the isolation of bottom run time infrastructure, make Design of Simulation System personnel by standard interface, realize that context is handed over
Mutually.
When at present, in vision simulation class software access HLA distributing emulation systems, due to the emulating image data volume for producing
Greatly, limited by the bandwidth of RTI (Run-Time Infrastructure), it is impossible to vision simulation class software is accessed based on HLA's
Distributing emulation system, causes emulation data be consistent in time with emulating image and cause phantom error even to go out
Existing mistake.
The content of the invention
Present invention solves the technical problem that being：Overcome the deficiencies in the prior art, there is provided a kind of distributed emulation based on HLA
Image synchronizing system, the invention solve as image generation system is produced that image data amount is big, cause imitative in analogue system
The problem that true data cannot be consistent in time with emulating image；Meanwhile, also solve and be subject to based on the analogue system of HLA
The restriction of RTI bandwidth, it is impossible to image generation system is accessed asking for emulation is synchronized based on the distributing emulation system of HLA
Topic.
The technical scheme is that：A kind of distributed emulation image synchronizing system based on HLA, including interactive agent mould
Block, image generation module, image sending module and system clock synchronization module；Interactive agent module is connect as a unit of emulation nation
Enter in HLA analogue systems, order the emulation data generated required for image of other unit of emulation nation generations in analogue system；Emulation
The unit of emulation nation of view data is needed to order the image attributes in interactive agent module in system；Interactive agent module is received to be ordered
Data is activation will be emulated after the emulation data of purchase to image generation module；Image generation module is corresponding according to Generation of simulating data
Image, and the attribute for generating image is extracted, described image attributes include time, image identifier, image size；Image is generated
Image attributes are sent to interactive agent module by module, while the image of generation is sent to image sending module；Image sends
The image that module cache image generation module sends；After interactive agent module receives the image attributes of image generation module transmission
Image attributes are issued, when other units of emulation nation carry out built-in function in analogue system, is generated according to present image attribute concurrent
Send " image request " event；" transmission image " instruction is generated and sent after interactive agent module response " image request " event to figure
As sending module；Image sending module response " transmission image " instruction, and the image of caching is passed through into high-speed video coffret
It is sent in analogue system in the unit of emulation nation for proposing " image request " event；
Before emulation starts, all emulation in analogue system of the system clock synchronization module into including interactive agent module
Unit of nation sends " starting emulation " instruction；After in each analogue system, unit of all emulation nations often completes once-through operation, all to system clock
Synchronization module sends " emulation propulsion " request, when system clock synchronization module receives what unit of all analogue system nations sent
After " emulation propulsion " request, in the analogue system into including interactive agent module, unit of all emulation nations sends " starting emulation "
Instruction, advances next step simulation operations；Whole this process of analogue system repetitive cycling is until emulation is completed.
The present invention is had the beneficial effect that compared with prior art：
One interactive agent module of first passage is issued image attributes and solves RTI bandwidth problems, indirectly generates image
System access is synchronous with emulation data clock based on the image for ensureing to generate in the distributing emulation system of HLA；By big data quantity
Image sendaisle isolate with the data exchange channels of HLA distributing emulation systems, improve simulation system data interaction effect
Rate；The interaction mechanism that ingenious utilization HLA is ordered/issued realizes that emulation data and image are generated, image is sent on clock and keeps
Unanimously, it is ensured that image generation system access is based on synchronous operation after the distributing emulation system of HLA, and simplifies clock synchronization
Development process.
Description of the drawings
Workflow diagrams of the Fig. 1 for image synchronizing system；
Fig. 2 is that image synchronizing system accesses the information exchange figure in HLA.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of distributed emulation image synchronizing system based on HLA, is generated by interactive agent module, image
Module, image sending module and system clock synchronization module composition.
1st, interactive agent module
Interactive agent module, accesses in analogue system based on HLA as a unit of emulation nation, complete with analogue system
The order of other unit of emulation nation interactive information and issue.Image generation module needs what each phantom was produced when image is generated
Emulation data, then image generation module orders the emulation data in distributing emulation system by interactive agent module.Interaction
Image generation module is given by emulation data is activation when proxy module receives the emulation data of each phantom；In order to overcome RTI
The restriction of bandwidth, interactive agent module only receive the image attributes of image generation module transmission, concurrent cloth image attributes, it is to avoid big
The view data of data volume enters the data exchange channels of analogue system.Other emulation in interactive agent module response analogue system
The image request event of unit of nation, generates " transmission image " instruction and is sent to image sending module.
Interactive agent module realizes in image generation module and analogue system other by calling the order issuing service of RTI
Emulation nation unit between data communication with interact, implement process as follows：
Increase the description object class relevant with interactive agent module and interaction first in federal member object factory file
Class is realizing the data flow and controlling stream of relevant image interaction between federal member.Object class ImageInfo correspondence emulating image
Essential information；Interactive class ImageReq correspondence image request event.The structure of object class and interactive class such as following table：
1 object category information of table
2 Interactive class information of table
Then, federation execution is created, interactive agent module is added federal.Federal establishment execution is called
Federation execution can be produced federation with federal member name, if completing federation, by interactive agent mould by DtExerciseConn
Block adds federal.
Finally, issue object class and interactive class are ordered.The order of object class and interactive class issues the service for calling RTI, orders
Purchase issue relation is as follows：
The order of 3 interactive agent module of table issues relation
2nd, image generation module
Image generation module receives the emulation data that interactive agent module sends, according to one width digitized map of Generation of simulating data
Picture；Image generation module extracts the base attribute (time, image identifier, image size) for generating digital picture, and by image
Attribute is sent to interactive agent module, while the image of generation is sent to image sending module.
3rd, image sending module
Image sending module receives image the cache image that image generation module sends；Image sending module Receiving Agent
" transmission image " instruction that interactive module sends, image is sent in analogue system by high-speed video transmission channel and orders imitative
The unit of emulation nation of true image so that the interaction data passage of analogue system is isolated with image transmission channel, it is ensured that not by RTI bandwidth
Limit and improve image interactive efficiency in analogue system.Image sending module mainly includes image buffer storage unit, image control
Unit and image transmitting element.
The image that image buffer storage unit can be received and cache image generation module sends；Image control unit is responsible for response
Image request event produces corresponding control command；Interface transmitting element realizes that high-speed video coffret is communicated, according to control
Order sends images to unit of corresponding emulation nation.
4th, system clock synchronization module
As shown in Fig. 2 being described in detail by a simulation process：Assume that unit of emulation nation 1 produces to generate for image
The emulation data that system needs, image synchronizing system generate emulating image, unit of emulation nation 2 and emulation nation according to emulation data-driven
Unit 3 carries out detection emulation using emulating image.
(1) system clock synchronization module issues " emulation starts " event；
(2) after in analogue system, other each federal members receive " emulation starts " event, bring into operation, it is ensured that in federation
All members start simultaneously at；
(3) emulate after unit of nation 1 updates emulation data and issue " propulsion request " event；
(4) image generation system passes through image generation module according to Generation of simulating data emulating image, and by interaction generation
Reason module externally issues more new image attributes；
(5) order the unit of emulation nation 2 of " image attributes " and emulate after unit of nation 3 receives new image attributes and externally issue
" image request " event, the image synchronizing system that have subscribed the event are received by interactive agent module and send " transmission image "
Image sending module, image sending module is instructed to send an image to emulate unit of nation 2 and imitate by high-speed video Transfer pipe
True unit of nation 3, after completing view data and transmitting, image synchronizing system, unit of emulation nation 2 and unit of emulation nation 3 externally issue that " propulsion please
Ask " event；
(6) after system clock synchronization module receives " propulsion request " event of all units of nation in addition to oneself, to outgoing
Cloth " emulation starts " event is advancing emulation next step.
Analogue system circulation carries out above step until whole simulation process terminates.
The non-detailed description of the present invention is known to the skilled person technology.
Claims (1)
1. a kind of distributed emulation image synchronizing system based on HLA, it is characterised in that：Including interactive agent module, image life
Into module, image sending module and system clock synchronization module；Interactive agent module accesses HLA emulation as a unit of emulation nation
In system, the emulation data generated required for image of other unit of emulation nation generations in analogue system are ordered；Need in analogue system
The unit of emulation nation of view data is wanted to order the image attributes in interactive agent module；Interactive agent module receives the emulation of order
Data is activation will be emulated after data to image generation module；Image generation module according to the corresponding image of Generation of simulating data, and
The attribute for generating image is extracted, described image attributes include time, image identifier, image size；Image generation module will
Image attributes are sent to interactive agent module, while the image of generation is sent to image sending module；Image sending module delays
Deposit the image of image generation module transmission；Interactive agent module receives issue figure after the image attributes that image generation module sends
As attribute, when other units of emulation nation carry out built-in function in analogue system, " image is generated and sent according to present image attribute
Request " event；" transmission image " instruction is generated and sent after interactive agent module response " image request " event to send to image
Module；Image sending module response " transmission image " instruction, and the image of caching is sent to by high-speed video coffret
During the unit of emulation nation of " image request " event is proposed in analogue system；Described HLA refers to High Level Architecture；
Before emulation starts, system clock synchronization module unit of all emulation nations in the analogue system into including interactive agent module
Send " starting emulation " instruction；After in analogue system, unit of all emulation nations often completes once-through operation, all to system clock synchronization mould
Block sends " emulation propulsion " request, when system clock synchronization module receive that unit of all analogue system nations sends " emulation is pushed away
Enter " after request, in the analogue system into including interactive agent module, unit of all emulation nations sends " start emulation " and instructs, and pushes away
Enter next step simulation operations；Whole this process of analogue system repetitive cycling is until emulation is completed.
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| CN101482828A (en) * | 2009-02-24 | 2009-07-15 | 中国运载火箭技术研究院 | Universal distributed vision simulation system based on HLA and its implementing method |
| CN101901150A (en) * | 2010-07-08 | 2010-12-01 | 北京航空航天大学 | Universal distributed airborne equipment health management simulation platform and implementation method thereof |
| CN102298331A (en) * | 2011-06-01 | 2011-12-28 | 哈尔滨工业大学 | Electromagnetic rail gun simulation system based on high level architecture (HLA) and realization method thereof |
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| CN101482828A (en) * | 2009-02-24 | 2009-07-15 | 中国运载火箭技术研究院 | Universal distributed vision simulation system based on HLA and its implementing method |
| CN101901150A (en) * | 2010-07-08 | 2010-12-01 | 北京航空航天大学 | Universal distributed airborne equipment health management simulation platform and implementation method thereof |
| CN102298331A (en) * | 2011-06-01 | 2011-12-28 | 哈尔滨工业大学 | Electromagnetic rail gun simulation system based on high level architecture (HLA) and realization method thereof |
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