A set of low-cost project schedule control system based on BIM technology is established. This paper discusses the requirements analysis, function design, architecture and data warehouse design. ARM7 SCM, LCD module, ...
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Ultra-high voltage power bushings are widely used in power systems. In the operation and maintenance process of the ultra-high voltage power bushings, testing and analysis are generally based on the equipment itself. ...
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ISBN:
(纸本)9781510668393
Ultra-high voltage power bushings are widely used in power systems. In the operation and maintenance process of the ultra-high voltage power bushings, testing and analysis are generally based on the equipment itself. If data is obtained from the equipment itself, there will be incomplete data transmission, and the obtained data is generally voltage, current, temperature and other sensing data that are easily obtained from outside power equipment. But for the internal data of power equipment, including online data information such as flow velocity field and pressure field. Therefore, this article attempts to establish the three-dimensional visual simulation model for the digital twin of ultra-high voltage power casing equipment, and further sets key tracking nodes on the three-dimensional configuration model to quantitatively track its multi-dimensional physical quantity change curves and trends. First of all, 3D modeling of large terrain of electric equipment is carried out. Virtual texture technology is used to block and fuse large area and multi resolution texture data. Different detail Hierarchical database model are used to block large area terrain, including texture image selection, ground surface background map selection, texture coverage and grid division. After determining the morphology of the terrain, digital twin 3D modelinganalysis was immediately conducted on the power equipment. In the 3D digital twin modeling, the converter transformer body and converter transformer bushing are taken as examples for analysis and explanation. The detailed structure of bushing equipment is considered in the twin model. At the same time, the electrical, thermal and mechanical Multi-physics simulation of converter transformer bushing are coupled and analyzed. Multi-physics simulation simulation results are associated with the key nodes in the 3D digital twin model to realize interaction of physical quantity information between the simulation model and the twin model. The
data fusion technology is an information processing discipline that just emerged in the 1990s, and its application range is very wide, while target tracking and recognition is still the most important subject of data ...
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Disentangled representation learning aims at obtaining an independent latent representation without supervisory signals. However, the independence of a representation does not guarantee interpretability to match human...
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Disentangled representation learning aims at obtaining an independent latent representation without supervisory signals. However, the independence of a representation does not guarantee interpretability to match human intuition in the unsupervised settings. In this article, we introduce conceptual representation learning, an unsupervised strategy to learn a representation and its concepts. An antonym pair forms a concept, which determines the semantically meaningful axes in the latent space. Since the connection between signifying words and signified notions is arbitrary in natural languages, the verbalization of data features makes the representation make sense to humans. We thus construct Conceptual VAE (ConcVAE), a variational autoencoder (VAE)-based generative model with an explicit process in which the semantic representation of data is generated via trainable concepts. In visual data, ConcVAE utilizes natural language arbitrariness as an inductive bias of unsupervised learning by using a vision-language pretraining, which can tell an unsupervised model what makes sense to humans. Qualitative and quantitative evaluations show that the conceptual inductive bias in ConcVAE effectively disentangles the latent representation in a sense-making manner without supervision. Code is available at https://***/ganmodokix/concvae.
Industrial control Systems (ICS) are specific systems that combine information technology (IT) and operational technology (OT). Due to their interconnection and remote accessibility, they become a target for cyberatta...
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ISBN:
(纸本)9798400707728
Industrial control Systems (ICS) are specific systems that combine information technology (IT) and operational technology (OT). Due to their interconnection and remote accessibility, they become a target for cyberattacks. As a result of their complexity and hetero-geneity in terms of devices and communication protocols, specific security controls and risk analysis methods need to be developed. In particular, in order to reduce the effort of deployment of risk analysis on such complex systems, automated methods need to be provided. This paper deals with automation of the risk identification process for ICS using the STRIDE threat modeling framework. We extend the well-known STRIDE modeling tool, namely Microsoft Threat modeling Tool (MTMT), with an incremental template dedi-cated to ICS and provide additional tools to automate the analysis using specific vulnerability extraction from Internet CVE databases.
Today, with the continuous development of technology, traditional power new energy engineering construction still involves a large number of manual tracking of project progress, manual collection of engineering data, ...
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The oil pipeline system faces numerous safety hazards and operational management challenges, such as leaks, blockages, and pressure fluctuations, which may lead to environmental pollution, economic losses, and even ca...
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In order to further achieve the moisture content at the outlet of the feeding process and stabilize the moisture content after cutting, and improve the production line process level, this paper studies a digital predi...
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ISBN:
(纸本)9798400716959
In order to further achieve the moisture content at the outlet of the feeding process and stabilize the moisture content after cutting, and improve the production line process level, this paper studies a digital prediction model for the cigarette silk feeding process. Based on data and various algorithmic models, a set of process parameter controlmodeling methods is formed. Establish a digital prediction model for the outlet moisture content of the feeding process, and obtain the minimum error range trained by the Gradient Boosting Decision Tree (GBDT) algorithm. The trend of the predicted value is basically consistent with the actual value. The prediction model for the outlet moisture content of the feeding process can well fit the actual situation. Substitute the test set data for validation and trial operation, with an error range of -0.0906 similar to 0.0942. Based on the prediction model of the Gradient Boosting Decision Tree (GBDT) algorithm, the outlet moisture content of the feeding process has a small error and error range, and the distribution and trend of the predicted values and error values are uniform. The method used in this article for predicting the moisture content at the outlet of the feeding process has good accuracy, stable testing results, and guiding significance. Based on digital prediction, adjust parameters in a timely manner, enhance scientific judgment, reduce complex communication and adjust processdata through experience, in order to improve process quality.
Human behavior could be represented in the form of a process. Existing processmodeling notations, however, are not able to faithfully represent these very flexible and unstructured processes. Additional non-process a...
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ISBN:
(纸本)9783031278143;9783031278150
Human behavior could be represented in the form of a process. Existing processmodeling notations, however, are not able to faithfully represent these very flexible and unstructured processes. Additional non-process aware perspectives should be considered in the representation. control-flow and data dimensions should be combined to build a robust model which can be used for analysis purposes. The work in this paper proposes a new hybrid model in which these dimensions are combined. An enriched conformance checking approach is described, based on the alignment of imperative and declarative process models, which also supports data dimensions from a statistical viewpoint.
This research extends the work from our previous study on utilizing digital technologies to turn short solid timber elements into framed timber systems designed for the rapid assembly and disassembly of cost-effective...
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ISBN:
(纸本)9789887891833
This research extends the work from our previous study on utilizing digital technologies to turn short solid timber elements into framed timber systems designed for the rapid assembly and disassembly of cost-effective, material-efficient, reusable gridshells. In a former paper, we developed an innovative reciprocally-reinforced topology of trivalent polyhedral frames, termed "ReciproFrame", enabled by the development of a CSV file to leverage the precision and speed of multi-axis robotic arms, which was then utilized in the construction of a small-scale, 7.5-meter research demonstrator. Although the multi-objective analysis confirmed the efficiency of the production method in constructing structurally-efficient catenary cross-sections without the need for any steel nodes-a feat not achievable with previous geodesic domes-we realized that the automated construction of larger structures in future timber industry would require an industrial-class production workflow featuring high-performance units equipped with powerful and efficient machining capacities for varied timber processing. As a solution, this paper presents a 24-hour industrial fabrication workflow, enabled by a self-developed data interface plugin that generates XML-based, industry-standard CAM data for the direct instruction of Hundegger K2 machines. It addresses the operational problems and technical challenges related to interoperability between the data interface programming and the operation of industrial joinery machines. Finally, the paper discusses the possible applications and limitations of the production workflow, while presenting the design-to-assembly process of a medium-scale research demonstrator with a maximum span of 15 meters, made of 768 industrially-fabricated Laminated Veneer Lumber (LVL) beams.
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