CN114201792A - Multi-space-time scale fusion method and system for digital twin model - Google Patents
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Abstract
The invention discloses a method and a system for fusing multiple space-time scales of a digital twin model, wherein the method comprises the following steps: step (1), performing digital twin model spatial scale fusion, and fusing different structure submodels forming an equipment model; step (2), performing time scale fusion of a digital twin model, and fusing submodels which form the equipment model and have shape and function changes caused by abrasion, stress and aging on the time scale; designing a space attribute interface for each model, wherein the interface defines a space coordinate interval of the model in a parent model; for models with different formats, firstly, carrying out format conversion by taking a target format as a reference, and secondly, adding a space attribute interface to the converted models; the time scale fusion mainly adds a time attribute interface to the model, completes calculation of abrasion, stress, aging and the like based on a pre-input equipment mechanism formula, and dynamically completes the assembly fusion of the real-time digital twin model according to the running time.
Description
Technical Field
The invention belongs to the field of electronic engineering and computer science, and particularly relates to a method and a system for fusing multiple spatiotemporal scales of a digital twin model.
Background
When a plurality of devices in a workshop construct a digital model, the traditional method generally completes the model construction in a building block mode by taking pictures and referring to CAD drawings and the like, and the method has the defects of low efficiency, low reuse rate and the like. Therefore, the invention discloses a multi-space-time scale fusion method of a digital twin model, which can realize the rapid construction and real-time evolution of the digital twin model to a certain extent through the fusion of the model on the time dimension and the space scale.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method comprises the design of a digital twin model space scale fusion module and the design of a digital twin model time scale fusion module, and can realize the rapid construction and the real-time evolution of the digital twin model to a certain extent through the fusion of the models on the time dimension and the space scale.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a digital twin model multi-space-time scale fusion method comprises the following steps:
designing a digital twin model space scale fusion module, wherein the module is mainly used for fusing different structure submodels forming an equipment model and is specifically realized as follows:
(1.1) equipment generally consists of a plurality of heterogeneous units, when a digital twin model is established, submodels of the plurality of heterogeneous units need to be fused and assembled, for the submodels with the same format, a spatial attribute interface is designed for each submodel, the interface defines the spatial position and the angular interval of the submodel in a father model, wherein the father model refers to the digital twin model of the equipment which is fused and assembled by each submodel; the space attribute interface comprises an x/y/z space coordinate interval and an x/y/z rotation angle interval of the sub-model in the parent model, and respectively represents the position and the angle of the sub-model in the parent model, wherein the position and the angle are interval values which indicate that a user can finely adjust the position and the angle in the interval according to the reality;
(1.2) for models with different formats, firstly, carrying out format conversion by taking a target format as a reference, namely, solidifying target format conversion logic in a microprocessor, inputting binary data of the model before conversion into a first-level cache in the microprocessor for caching, converting the data in the first-level cache by the conversion logic, storing the converted data into a second-level cache, and finally, outputting the data in the second-level cache into the target format model; aiming at the converted model, designing a space attribute interface according to (1.1);
designing a digital twin model time scale fusion module, wherein the module is mainly used for model fusion in appearance and function changes caused by abrasion, stress, aging and the like on a time scale, and is specifically realized as follows:
(2.1) designing a time attribute interface for the model, wherein the interface completes calculation of abrasion, stress, aging and the like based on a mechanism formula of each unit of equipment input in advance;
and (2.2) dynamically adjusting the sub-model parameters constructed in the step (1) according to the running time of each unit of the actual equipment and the calculation of the abrasion, stress, aging and the like of each unit of the equipment in the step (2.1), so that the sub-model parameters can represent the states of the abrasion, stress, aging and the like, and the assembly and fusion of the dynamic digital twin model of the equipment are completed.
Compared with the prior art, the invention has the advantages that:
the traditional method generally completes model construction in a building block mode by taking pictures and referring to CAD drawings and the like, and the method has the defects of low efficiency, low reuse rate and the like. The method can realize the rapid construction and real-time evolution of the equipment digital twin model to a certain extent through the fusion of the model on the time dimension and the space scale.
Drawings
FIG. 1 is a block diagram of a digital twin model multi-spatiotemporal scale fusion method and system according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
The invention relates to a digital twin model multi-space-time scale fusion method and a digital twin model multi-space-time scale fusion system.
The structural block diagram of the invention is shown in fig. 1, wherein 1 in fig. 1 represents a digital twin model space scale fusion module, and 2 in fig. 1 represents a digital twin model time scale fusion module. The specific implementation mode is as follows:
(1) designing a digital twin model space scale fusion module, wherein the module is mainly used for fusing all different structure submodels forming an equipment model and is specifically realized as follows:
(1.1) the equipment generally consists of a plurality of heterogeneous units, taking a common filament dropping machine in a textile workshop as an example, the structure of the equipment consists of the heterogeneous units such as a clamping mechanism, a belt conveying mechanism, a precise positioning mechanism, a feeding mechanism and the like. When a digital twin model is established, the submodels of a plurality of heterogeneous units need to be fused and assembled, for the submodels with the same format, a space attribute interface is designed for each submodel, the interface defines the space position and the angle interval of the submodel in a parent model, and the parent model refers to a digital twin model assembled by fusing all the submodels; the space attribute interface comprises an x/y/z space coordinate interval and an x/y/z rotation angle interval of the sub-model in the parent model, and respectively represents the position and the angle of the sub-model in the parent model, wherein the position and the angle are interval values which indicate that a user can finely adjust the position and the angle in the interval according to the reality;
(1.2) for models with different formats, firstly, carrying out format conversion by taking a target format as a reference, namely, solidifying target format conversion logic in a microprocessor, inputting binary data of the model before conversion into a first-level cache in the microprocessor for caching, converting the data in the first-level cache by the conversion logic, storing the converted data into a second-level cache, and finally, outputting the data in the second-level cache into the target format model; aiming at the converted model, designing a spatial attribute interface according to (1.1), wherein the interface defines the spatial position and the angle interval of the sub-model in the parent model;
(2) designing a digital twin model time scale fusion module, wherein the module is mainly used for model fusion in appearance and function changes caused by abrasion, stress, aging and the like on a time scale, and is specifically realized as follows:
(2.1) designing a time attribute interface for the model, wherein the interface can acquire the running time of each unit of equipment by a common data acquisition mode, such as RS485, Modbus, Ethernet and the like, and meanwhile, the interface finishes calculation of abrasion, stress, aging and the like based on a mechanism formula of each unit of the equipment input in advance;
and (2.2) dynamically adjusting the sub-model parameters constructed in the step (1) according to the running time of each unit of the actual equipment and the calculation of the abrasion, stress, aging and the like of each unit of the equipment in the step (2.1), so that the sub-model parameters can represent the states of the abrasion, stress, aging and the like, and the assembly fusion of the dynamic digital twin model of the equipment is completed.
In summary, the invention discloses a digital twin model multi-space-time scale fusion method and system, which comprises a digital twin model space scale fusion module design and a digital twin model time scale fusion module design, and can realize the rapid construction and real-time evolution of an equipment digital twin model to a certain extent through the fusion of the models on the time dimension and the space scale.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A multi-space-time scale fusion method of a digital twin model is characterized by comprising the following steps:
step (1), performing digital twin model spatial scale fusion, and fusing different structure submodels forming an equipment model;
and (2) carrying out time scale fusion on the digital twin model, and fusing submodels which form the equipment model and have shape and function changes caused by abrasion, stress and aging on the time scale.
2. The method for fusing the digital twin model with multiple spatio-temporal scales according to claim 1, wherein in the step (1), the digital twin model is fused with the spatial scales, and the method is implemented by fusing different structure submodels forming an equipment model as follows:
(1.1) the equipment comprises a plurality of heterogeneous units, when a digital twin model of the equipment is established, the submodels of the heterogeneous units need to be fused and assembled, for the submodels with the same format, a space attribute interface is designed for each submodel, the interface defines the space position and the angle interval of the submodel in a father model, and the father model refers to the digital twin model of the equipment which is fused and assembled by each submodel; the space attribute interface comprises an x/y/z space coordinate interval and an x/y/z rotation angle interval of the sub-model in the parent model, and respectively represents the position and the angle of the sub-model in the parent model, wherein the position and the angle are interval values which indicate that a user can finely adjust the position and the angle in the interval according to the reality;
(1.2) for submodels with different formats, firstly, carrying out format conversion by taking a target format as a reference, namely, solidifying target format conversion logic in a microprocessor, inputting binary data of the model before conversion into a first-level cache in the microprocessor for caching, converting the data in the first-level cache by the conversion logic, storing the converted data into a second-level cache, and finally, outputting the data in the second-level cache into a target format model; and (5) designing a space attribute interface according to the step (1.1) aiming at the converted submodel.
3. The method for fusing the digital twin model with multiple spatio-temporal scales according to claim 1, wherein in the step (2), the time scale fusion of the digital twin model is performed, and the fusion is performed on the submodels which form the equipment model and have shape and function changes caused by abrasion, stress, aging and the like on the time scale, and the method is specifically realized as follows:
(2.1) designing a time attribute interface for the sub-model, wherein the interface completes the calculation of abrasion, stress and aging based on a mechanism formula of each unit of equipment input in advance;
and (2.2) dynamically adjusting the sub-model parameters constructed in the step (1.1) according to the running time of each unit of the actual equipment and the calculation of the abrasion, stress and aging of each unit of the equipment in the step (2.1), so that the sub-model parameters can represent the states of the abrasion, stress and aging, and the assembly and fusion of the dynamic digital twin model of the equipment are completed.
4. A digital twin model multi-spatiotemporal scale fusion system, comprising:
the digital twin model space scale fusion module is mainly used for fusing all different structure submodels forming an equipment model and is specifically realized as follows:
(1.1) equipment generally consists of a plurality of heterogeneous units, when a digital twin model is established, submodels of the plurality of heterogeneous units need to be fused and assembled, for the submodels with the same format, a spatial attribute interface is designed for each submodel, the interface defines the spatial position and the angular interval of the submodel in a father model, wherein the father model refers to the digital twin model of the equipment which is fused and assembled by each submodel; the space attribute interface comprises an x/y/z space coordinate interval and an x/y/z rotation angle interval of the sub-model in the parent model, and respectively represents the position and the angle of the sub-model in the parent model, wherein the position and the angle are interval values which indicate that a user can finely adjust the position and the angle in the interval according to the reality;
(1.2) for models with different formats, firstly, carrying out format conversion by taking a target format as a reference, namely, solidifying target format conversion logic in a microprocessor, inputting binary data of the model before conversion into a first-level cache in the microprocessor for caching, converting the data in the first-level cache by the conversion logic, storing the converted data into a second-level cache, and finally, outputting the data in the second-level cache into the target format model; aiming at the converted model, designing a space attribute interface according to (1.1);
the digital twin model time scale fusion module is mainly used for model fusion in appearance and function changes caused by abrasion, stress, aging and the like on a time scale, and is specifically realized as follows:
(2.1) designing a time attribute interface for the model, wherein the interface completes calculation of abrasion, stress, aging and the like based on a mechanism formula of each unit of equipment input in advance;
and (2.2) dynamically adjusting the sub-model parameters constructed in the step (1) according to the running time of each unit of the actual equipment and the calculation of the abrasion, stress, aging and the like of each unit of the equipment in the step (2.1), so that the sub-model parameters can represent the states of the abrasion, stress, aging and the like, and the assembly and fusion of the dynamic digital twin model of the equipment are completed.
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| CN115270419A (en) * | 2022-06-30 | 2022-11-01 | 北京亚控科技发展有限公司 | Twin method, subscription method and system for real-time event current state |
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| CN115270419A (en) * | 2022-06-30 | 2022-11-01 | 北京亚控科技发展有限公司 | Twin method, subscription method and system for real-time event current state |
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