CN111859614A - Multifunctional advanced disk replication method for simulation system - Google Patents
Multifunctional advanced disk replication method for simulation system Download PDFInfo
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Abstract
The invention provides a multifunctional advanced disk copying method for a simulation system, which comprises the following steps: the simulation system is initialized, simultaneously an index file of a simulation object is loaded, an instruction is executed bidirectionally, a binary object data file is loaded, based on the file format, a bidirectional fast search algorithm is utilized to reversely sequence data into an object state, the simulation object is operated in a playback state, a decoding state and a mixed state mode, the real-time switching from the playback state to the decoding state of the data is optimized, a multi-disk parameter is configured, whether the simulation object records and plays back or not is configured according to the type, and the simulation object and a simulation event are subjected to multi-disk. By accurately managing and controlling the disk copying process and the disk copying content of the simulation system, the simulation system supports advanced functions of reverse-order disk copying, drag and drop of any disk copying position, local playback, dynamic switching of playback state and solution state and the like, and fully excavates the analysis effect and application value of data.
Description
Technical Field
The invention relates to the technical field of computer simulation, in particular to a multifunctional advanced disk copying method for a simulation system.
Background
The duplication (also called playback) is a common and practical function in simulation experiments or training, a simulation system with recording and duplication functions is equivalent to being provided with a camera and a video player, data generated by simulation calculation is recorded, and then duplication is performed when needed, so that repeated analysis and iterative application of a simulation process can be realized, and more opportunities are provided for finding problems and rules.
At present, the function of the copy disk commonly used by people is simple, and the data is mainly played back integrally according to the sequence. Due to the poor controllability of the playback mode, the functions of reverse playback, arbitrary multi-disk position drag and drop, local playback, playback state and solution state dynamic switching and the like are not supported, so that the analysis effect and the application value of simulation result data are not fully mined.
The simulation system is usually time or event driven, and in the case of time driving, each time point corresponds to a complete state space of the system, which makes the design of a record copying system of the simulation system more difficult than that of a non-time sensitive file system (such as a Word document).
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a multifunctional advanced replication method for a simulation system, which is achieved by the following specific technical means:
A multifunctional advanced disk copying method for a simulation system comprises the following steps:
s1, initializing the simulation system, loading the index file of the simulation object, and executing the instruction in two directions;
s2, loading a binary object data file, wherein the binary object data file is composed of a plurality of frames, and the format of each frame is designed as follows: time, len, dat, len.
S3, based on the file format, utilizing a bidirectional fast search algorithm to reversely sequence the data into an object state;
the bidirectional fast search algorithm flow is as follows:
1) initializing a current frame time Tc and a next frame time Tn;
2) judging the searching direction, namely if Ti > Tn, searching in the forward direction, if Ti < Tc, searching in the reverse direction, if Tc < Ti < Tn, directly matching the frame data, and finishing the searching;
3) if the file is searched in the forward direction, continuously reading the adjacent frame time in the forward sequence, namely continuously updating Tc and Tn until Tc < Ti < Tn is met, matching the frame data, and if the data is not searched at the end of the file, considering that the object does not exist in the Ti time, and deleting the object;
4) and if the data is not searched by the beginning of the file, the object is considered to be absent in the Ti time, and the object is deleted.
S4, operating the simulation object in a playback state, a solution state and a mixed state mode;
s5, optimizing the real-time switching from the playback state to the solution state of the data;
s6, configuring the copy parameters, configuring whether the simulation object records or plays back according to the category, and simultaneously supporting the configuration whether the single attribute of the simulation object records or plays back.
And S7, copying the simulation object and the simulation event.
As an optimization, in step S1, the index file records an operation instruction and parameters at each time point, where the operation instruction includes a creation instruction Item and a deletion instruction ItemEnd of the simulation object, and the parameters of the object creation instruction and the deletion instruction are: the model name, object name, file name, Item and ItemEnd are a pair of opposite operations, if the system is in a forward playback state, an Item instruction causes a create object operation, and an ItemEnd instruction causes a delete object operation; if the system is in reverse playback state (reverse mode), the Item instruction results in a delete object operation and the ItemEnd instruction leads to a create object operation.
In step S2, time represents the time of the current frame of the simulation object data, len represents the length of the current frame of data, and dat represents the content of the current frame of data. It can be seen that each frame includes length information of data at two positions, which is one of the keys of the present invention, and is mainly used for fast searching the starting position point of the previous frame from the end of the file in reverse when playing back in reverse order (rewind mode).
As an optimization, in step S4, two callback functions, namely, a computer function and a Play function, are loaded on the simulation object, and when the object driving parameter is set to 0, the object is in a solution state, and the computer function is called back; otherwise, when the object driving parameter is set to 1 and the playback file is specified, the object is in the playback state and the Play function is recalled.
As an optimization, in step S5, the running state of the object is switched by setting the driving flag of the object, when the simulation object is switched from the playback state to the solution state, only the driving flag of the object needs to be set from 1 to 0, the last frame data played back at this time will be used as the initialized data for solution, and when the whole simulation system is switched from the playback state to the solution state, all the objects in the playback state will be switched to the solution state.
As an optimization, in step S6, the configuration information is specified by an XML.
In step S7, the simulation system is optimized by using a strategy that the simulation object does not respond to the event that is copied and displays only the event.
The invention has the following beneficial effects:
1. according to the multifunctional advanced disk copying method for the simulation system, the disk copying process and the disk copying content of the simulation system are accurately managed and controlled, so that advanced functions such as reverse-order disk copying, drag and drop of any disk copying position, local playback, dynamic switching of playback state and resolving state and the like are supported, and the analysis effect and the application value of data are fully mined.
2. The multifunctional advanced multi-disk method for the simulation system is not only suitable for developing a simulation support platform or customizing a high-performance simulation application system, but also can be used as a design reference for other high-performance computing systems, and is wide in application range.
Drawings
FIG. 1 is a diagram of the relationship of a simulation system, a simulation object, an index file and a data file according to the present invention.
FIG. 2 is a diagram of a data file format according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a multifunctional advanced replication method for simulation system includes the following steps:
s1, initializing the simulation system, loading the index file of the simulation object, and executing the instruction in two directions;
the index file records an operation instruction and parameters of each time point, the operation instruction comprises a creation instruction Item and a deletion instruction Item of the simulation object, and the parameters of the object creation instruction and the deletion instruction are as follows: the model name, object name, file name, Item and ItemEnd are a pair of opposite operations, if the system is in a forward playback state, an Item instruction causes a create object operation, and an ItemEnd instruction causes a delete object operation; if the system is in reverse playback state (reverse mode), the Item instruction results in a delete object operation and the ItemEnd instruction leads to a create object operation.
S2, loading a binary object data file, wherein the binary object data file is composed of a plurality of frames, and the format of each frame is designed as follows: time, len, dat, len. time represents the time of the current frame of the simulation object data, len represents the length of the current frame data, and dat represents the content of the current frame data. It can be seen that each frame includes length information of data at two positions, which is one of the keys of the present invention, and is mainly used for fast searching the starting position point of the previous frame from the end of the file in reverse when playing back in reverse order (rewind mode).
S3, based on the file format, utilizing a bidirectional fast search algorithm to reversely sequence the data into an object state;
the bidirectional fast search algorithm flow is as follows:
1) initializing a current frame time Tc and a next frame time Tn;
2) judging the searching direction, namely if Ti > Tn, searching in the forward direction, if Ti < Tc, searching in the reverse direction, if Tc < Ti < Tn, directly matching the frame data, and finishing the searching;
3) if the file is searched in the forward direction, continuously reading the adjacent frame time in the forward sequence, namely continuously updating Tc and Tn until Tc < Ti < Tn is met, matching the frame data, and if the data is not searched at the end of the file, considering that the object does not exist in the Ti time, and deleting the object;
4) And if the data is not searched by the beginning of the file, the object is considered to be absent in the Ti time, and the object is deleted.
S4, operating the simulation object in a playback state, a solution state and a mixed state mode;
loading two callback functions of a computer function and a Play function to the simulation object, wherein when the object driving parameter is set to be 0, the object is in a solution state, and the computer function is called back; otherwise, when the object driving parameter is set to 1 and the playback file is specified, the object is in the playback state and the Play function is recalled.
S5, optimizing the real-time switching from the playback state to the solution state of the data;
the running state of the object is switched by setting the driving mark of the object, when the simulation object is switched from the playback state to the solution state, only the driving mark of the object needs to be set from 1 to 0, the last frame data played back at the moment is used as the initialized data for solution, and when the whole simulation system is switched from the playback state to the solution state, all the objects in the playback state are switched to the solution state.
The mode of switching the playback state to the solution state in real time can be used for optimizing the simulation process, namely when a certain simulation process is played back to a certain relatively optimized state, the simulation is switched to a normal operation mode, namely the simulation is started from a relatively ideal state, so that a good starting point is provided for searching the next optimized state; successive iteration is carried out, the optimization states of the local process can be continuously connected in series, and an optimization scheme of the whole process is formed.
S6, configuring the parameters of the copy, configuring whether the simulation object records or plays back according to the category, and supporting the configuration whether the single attribute of the simulation object records or plays back, wherein the configuration information is designated by an XML.
And S7, copying the simulation object and the simulation event, and copying the simulation system by adopting a strategy that the simulation object does not respond to the copied event but only displays the event.
The specific implementation scheme is as follows:
for example, in a military training red-blue simulation system, examples of instructions executed in both directions are: the following XML fragment describes that when the simulation Time is 5.0 seconds, the Plane model is used to create the red airplane 1 and the red airplane 2, and the corresponding data files are red001.dat and red002.dat, respectively; when the simulation Time is 300 seconds, the red airplane 1 and red airplane 2 objects are deleted.
<Scenario>
<Time Value＝"5.0">
< Item ItemClass ═ Plane "Name ═ Red Square aircraft 1 ═ RecFile ═ red001.dat"/>
< Item ItemClass ═ Plane "Name ═ Red Square aircraft 2 ═ red002.dat"/>, and
</Time>
<Time Value＝"300.0">
< ItemEnd ItemClass ═ Plane "Name ═ Red Square aircraft 1 ═ RecFile ═ red001.dat"/>, and
< ItemEnd ItemClass ═ Plane "Name ═ Red Square aircraft 1 ═ Red File ═ red002.dat"/>, and
</Time>
</Scenario>
an example of system driving in a mixed mode of a military red-blue simulation system is as follows: the following index file will bring airplane object number 001 into the playback state at the time of creation, and the data file played back is plane001. dat.
<Item ItemClass＝"Plane"Name＝"001"RecFile＝"Plane001.dat">
<Parameter Name＝"PlayMode"Value＝"1"/>
</Item>
The simulation system supporting the hybrid driving mode can realize the linkage calculation of the simulation object and the real data, for example, in the red-blue countermeasure simulation, the blue object is played back from the measured data, and the red data is calculated through the simulation model, and the continuous optimization of the red model can be realized through continuous iteration.
Examples of the multi-disk parameter configuration of a military simulation system are: although the aircraft motion model can be solved into six degrees of freedom, the user may only need to record the position information of the aircraft, and is not interested in the attitude information, and is only interested in the longitude and latitude of the ship, and the configuration parameters are as follows.
<RecordCfg>
<ItemClass Name＝"Plane"RecAttr＝"longitude,latitude,height"/>
<ItemClass Name＝"Ship"RecAttr＝"longitude,latitude"/>
</RecordCfg>。
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A multifunctional advanced disk replication method for a simulation system is characterized in that: the method comprises the following steps:
s1, initializing the simulation system, loading the index file of the simulation object, and executing the instruction in two directions;
S2, loading a binary object data file, wherein the binary object data file is composed of a plurality of frames, and the format of each frame is designed as follows: time, len, dat, len.
S3, based on the file format, utilizing a bidirectional fast search algorithm to reversely sequence the data into an object state;
the bidirectional fast search algorithm flow is as follows:
1) initializing a current frame time Tc and a next frame time Tn;
2) judging the searching direction, namely if Ti > Tn, searching in the forward direction, if Ti < Tc, searching in the reverse direction, if Tc < Ti < Tn, directly matching the frame data, and finishing the searching;
3) if the file is searched in the forward direction, continuously reading the adjacent frame time in the forward sequence, namely continuously updating Tc and Tn until Tc < Ti < Tn is met, matching the frame data, and if the data is not searched at the end of the file, considering that the object does not exist in the Ti time, and deleting the object;
4) and if the data is not searched by the beginning of the file, the object is considered to be absent in the Ti time, and the object is deleted.
S4, operating the simulation object in a playback state, a solution state and a mixed state mode;
S5, optimizing the real-time switching from the playback state to the solution state of the data;
s6, configuring the copy parameters, configuring whether the simulation object records or plays back according to the category, and simultaneously supporting the configuration whether the single attribute of the simulation object records or plays back.
And S7, copying the simulation object and the simulation event.
2. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S1, the index file records an operation instruction and parameters at each time point, where the operation instruction includes a creation instruction Item and a deletion instruction Item of the simulation object, and the parameters of the object creation instruction and the deletion instruction are: model name, object name, file name, Item and ItemEnd are a pair of opposite operations.
3. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S2, time represents the time of the current frame of the simulation object data, len represents the length of the current frame data, and dat represents the content of the current frame data.
4. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S4, two callback functions, namely, a computer function and a Play function, are loaded into the simulation object, and when the object driving parameter is set to 0, the object is in a solution state, and the computer function is called back; otherwise, when the object driving parameter is set to 1 and the playback file is specified, the object is in the playback state and the Play function is recalled.
5. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S5, the operation state of the object is switched by setting the driving flag of the object.
6. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S6, the configuration information is specified by an XML.
7. The multifunctional advanced disk replication method for the simulation system according to claim 1, wherein: in step S7, the simulation system is replicated by using a policy that the simulation object does not respond to the replicated event but displays the event.
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