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A Communication Architecture for Inter-substation Communication

A Communication Architecture for Inter-substation Communicat...

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IEEE International conference on Computer and Information Technology Workshops, CIT

作者： Mahmood Qureshi Ali Raza Dileep Kumar Sang-Sig Kim Un-Sig Song Min-Woo Park Hyuk-Soo Jang Hyo-Sik Yang Department of Computer Software Myongji University Yongin si South Korea Department of Computer Engineering Sejong University Seoul South Korea

In the realm of substation automation (SA), communication infrastructure plays a vital role in mediating between physical and virtual worlds of substation. Specification of data exchanges through standardized communication stacks is therefore an important issue for all substation equipment manufacturers seeking to provide vendor interoperability. As communication arena is changing day by day, the need for efficient and reliable communication infrastructure to address SA is evident. In this respect, a communication network constitutes the core of the SA, thus the design of cost-effective and reliable network architecture is a crucial task. Most of the existing communication networks claim to address the need of communication architecture for SA but in some regard these claims just could not fulfill the constraints imposed by highly available environment for SA. this paper presents a survey and analysis of the current state-of-the-art communication infrastructure in the SA and proposes giga-bit Ethernet topology and E-PON based architecture.

关键词： Communication system control Protective relaying Substation protection Communications technology Satellite communication optical fiber communication Physics computing SCADA systems Control systems Remote monitoring

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Research on an optical system based on multi-camera imaging for TFT-LCD module defect detection

Research on an optical system based on multi-camera imaging ...

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IEEE Information Technology and Mechatronics engineering conference (ITOEC)

作者： Hangrui Yan Zhiyong Xiong Guiyang Yang Shaokun Li Department of Mechanical Automation School of Mechanical and Engineering Wuhan University of Engineering Science Wuhan China Wuhan Zhongguan Automation Technology Co. Ltd Wuhan China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China

In order to detect the defects of TFT LCD screens automatically, an optical system based on multi-camera imaging was established. the structure of TFT-LCD module and the causes of defects were analyzed, and different optical modules were designed to detect different types of defects. then, according to the inspection requirements, the optical analysis and design selection were carried out. Finally, the trend chart of detection curve of TFT-LCD module defect detection system in actual production line was given. the experimental results show that for TFT-LCD screens of mobile phone with 3-8 inches and HD, FHD or 2K resolution, the comprehensive misdetection rate of the proposed detection system is 0.88% and the inspection rate is 7.89%, which can meet the defect detection requirements of TFT-LCD modules on the current production line.

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Mechanical structure design and simulation of multi-physical field integrated pipeline internal inspection detector 4

Mechanical structure design and simulation of multi-physical...

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4th International conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2024

作者： Huang, Jie Chen, Pengchao Li, Rui Fu, Kuan Wang, Yanan Duan, Jingyao China University of Petroleum Beijing China Pipechina Research Institute Langfang China

ISBN: (数字)9781510679887

ISBN: (纸本)9781510679870

this paper addresses circumferential weld cracking in oil and gas pipelines, a primary form of pipeline failure. To achieve scientific and effective management of the entire process, all regions, and throughout the entire life cycle of the high-grade steel pipeline, a novel multi-physical field ultra-high-definition pipeline comprehensive condition inspection device has been designed and developed. the device incorporates a dual-array structured composite electromagnetic probe, operating at a 5K frequency, to real-time capture magnetic leakage and eddy current signals, enabling the detection of minute defects such as cracks and pinholes in circumferential welds. Additionally, integrated probes for diameter measurement, stress assessment, and orientation evaluation allow for a comprehensive assessment of pipeline deformation, stress, and orientation. Finite Element Analysis is applied to the mechanical structure of the detector to validate its design rationale and safety. Structural strength simulation results indicate that the design of the multi-physical field ultra-high-definition pipeline comprehensive condition inspection device is reasonable, enabling it to undertake inspection tasks for large-diameter, high-grade, high-pressure, long-distance pipelines with pressures ranging from 8 to 12 MPa. this device fills a technological gap in both domestic and international markets for the composite detection of minute defects in large-diameter, high-grade pipelines. © 2024 SPIE.

关键词： Inspection

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Organic sensors for explosive detection

Organic sensors for explosive detection

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International conference on Computers and Devices for Communication (CODEC)

作者： Ravishankar S. Dudhe Seena V. Soumyo Mukherji Anil Kumar Ramgopal Rao Department of Electrical Engineering Indian Institute of Technology Bombay Mumbai INDIA School of Bio-sciences & Engineering Indian Institute of Technology Bombay Mumbai INDIA Department of Chemistry Indian Institute of Technology Bombay Mumbai INDIA

Organic field effect transistors and polymer microcantilevers are two different classes of organic sensors with potential applications in biochemical sensing. Organic field effect transistors based on poly (3-hexylthiophene) and CuII tetraphenylporphyrin composite were investigated as sensors for detection of vapors of nitrobased explosive compounds. Significant changes, suitable for sensor response, were observed in transistor -on|| current (Ion) and conductance (S) after exposure. A similar device response was, however, not observed for oxidizing agents such as benzoquinone and benzophenone. Polymer microcantilevers offer a sensitive cost effective platform for explosive gas detection. these sensors with optical and electrical transduction mechanisms were designed and fabricated using SU-8 polymer and they are further functionalized with appropriate coating for explosive detection. optical and electrical responses of respective microcantilevers to TNT vapors are also reported here.

关键词： Explosives Biosensors optical sensors optical polymers OFETs Biomedical optical imaging Costs Particle beam optics optical design Polymer films

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Lightweight person re-Identification model employing symmetrical combination units

Lightweight person re-Identification model employing symmetr...

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2023 International conference on Algorithm, Imaging Processing, and Machine Vision, AIPMV 2023

作者： Cai, Dawei Tang, Qingwei Shenzhen Sunwin Intelligent Co. Ltd A101-15th Floor Saiwei Building No. 8 Lianli East Road Xiaolilang Community Nanwan Street Longgang District Shenzhen China Anhui Jianzhu University School of Electronic and Information Engineering Electronic Information No. 292 Ziyun Road Economic and Technological Development Zone AnHui Hefei230601 China

ISBN: (纸本)9781510672444

As an image retrieval problem, person re-identification (Re-ID) relies on robust features extracted by convolution neural models. Most current methods use large backbone models for feature extraction (e.g., ResNet50). However, these large backbone models have many parameters, which cause many problems when embedded in smart camera devices. For example, the device's computing resources are limited, the real-time operation speed is limited, etc. So it is necessary to construct models with low parameters and low complexity. this paper proposes a new lightweight baseline for Re-ID, which is SCL-net and all underlying modules of the model are reconstructed. In our work, we design a new convolution unit-symmetrical combination units (SC-unit), which construct features map of richer channels by reusing feature maps from different convolution layers. In addition, we redesigned all the base modules of SCL-net and proved the effectiveness of all modules. We joint training of shallow and deep features of the model respectively to improve the accuracy of the model. Our SCL-net has about 2.3M parameters, and it can achieve 95.2%/85.9% on Rank-1 and mAP without any pre-training. © 2024 SPIE.

关键词： Convolution

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Building information modeling (BIM) in energy, sustainability, and optimization

Building information modeling (BIM) in energy, sustainabilit...

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8th IET Smart Cities Symposium (SCS 2024)

作者： Saraa N. K. Alasadi College of Engineering and Computing American University of Bahrain Building 1350 Road 4225 Riffa 942 Bahrain

ISBN: (数字)9781837243105

this comprehensive review paper examines the multifaceted role of Building Information Modelling (BIM) in the realm of Energy Economics, Policy, Management Enhancement, and Optimization. the research investigates critical aspects, including interoperability challenges in BIM for energy analysis, the integration of advanced technologies like laser scanners and thermographic cameras, and the potential of BIM/GIS collaboration for urban-scale energy analysis. Real-time building monitoring, automation, and the development of BIM model-based tools for sustainable building design are explored, along with insights into hygrothermal design, energy certification processes, and the state of training in BIM for energy efficiency. the paper also delves into optimization algorithms, decision-making frameworks, and recent developments in BIM-based design processes for sustainability. By synthesizing these diverse research points, the review aims to provide a comprehensive understanding of the current landscape, challenges, and future directions in leveraging BIM to enhance energy efficiency in the built environment. Researchers, practitioners, and policymakers will find valuable insights to inform their endeavours in advancing energy-efficient practices through BIM applications.

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Wearable optical-digital assistive device for low vision students

Wearable optical-digital assistive device for low vision stu...

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Annual International conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Boris I. Afinogenov James. B. Coles Sailashri Parthasarathy Jessica Press-Williams Ralina Tsykunova Anastasia Vasilenko Jaya Narain Nevan C. Hanumara Amos Winter PremNandhini Satgunam Skolkovo Institute of Science and Technology Moscow Russia Massachusetts Institute of Technology Cambridge MA USA LV Prasad Eye Institute Hyderabad India

ISBN: (纸本)9781457702198

People with low vision have limited residual vision that can be greatly enhanced through high levels of magnification. current assistive technologies are tailored for far field or near field magnification but not both. In collaboration with L.V. Prasad Eye Institute (LVPEI), a wearable, optical-digital assistive device was developed to meet the near and far field magnification needs of students. the critical requirements, system architecture and design decisions for each module were analyzed and quantified. A proof-of-concept prototype was fabricated that can achieve magnification up to 8x and a battery life of up to 8 hours. Potential user evaluation with a Snellen chart showed identification of characters not previously discernible. Further feedback suggested that the system could be used as a general accessibility aid.

关键词： Cameras Image resolution Lenses optical imaging Batteries optical device fabrication

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design of a Domain-Specific Metamodel for Industrial Business Process Management

Design of a Domain-Specific Metamodel for Industrial Busines...

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IIAI International conference on Advanced Applied Informatics (IIAIAAI)

作者： Wilfrid Utz Faculty of Computer Science Research Group Knowledge Engineering University of Vienna Vienna Austria

ISBN: (纸本)9781728126289

Enterprises operate in fast-changing environments nowadays and experience the continuous need to adapt to changing circumstances and new strategical and technological developments. this observation impacts how enterprise information systems are analysed, designed, implemented and used. Focusing on the analysis and design phases, conceptual modelling methods in the field of enterprise architecture management experience a continuous evolution in research and practice. Existing methods are re-purposed for specific requirements, new methods are developed/evaluated in concrete industrial settings and coupling/integration techniques support holistic viewpoints. Nevertheless, current practices in the design and enactment of such methods, and more specifically their metamodels, are inefficient with respect to agile and iterative considerations. Within this paper, a novel design approach for modelling method engineering is discussed that builds on the notion of meta-models as conceptual structures. Syntactic and semantic operation on these structures aim to facilitate the design process following the design science research methodology. the approach is evaluated by introducing a case developed as part of the European research project GO0D MAN. In the context of the project an enterprise architecture metamodel has been designed, developed and deployed that supports an integrated viewpoint of conceptual model artefacts coupled with operational data visualisations to assess the effectiveness of design decisions.

关键词： Enterprise architecture management Modelling Metamodelling Conceptual structure Conceptual Architecture Modeling Industrial enterprises Construction management Business process management MEthODS engineering Process management Enterprise information system design phases meta-models design process Walker-A Motif design theory Metamodels Companies

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Study on the wind resistance of a certain commercial vehicle and its influence on fuel consumption 4

Study on the wind resistance of a certain commercial vehicle...

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4th International conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2024

作者： Ren, Xiaolong Zhao, Hongxia Liu, Minjie Automotive Engineering Institute Beijing Polytechnic Beijing100000 China

ISBN: (数字)9781510679887

ISBN: (纸本)9781510679870

this article focuses on the key modified components that affect air resistance of a certain commercial vehicle model, including the air deflector, rearview mirror, and front face assembly. through CFD numerical simulation method, multiple schemes of aerodynamic drag reduction optimization design are carried out for streamlined air deflector, rearview mirror, and front face assembly. At the same time, reserve schemes of aerodynamic drag reduction optimization design are also carried out for the modified vehicle model. On the one hand, the measured drag reduction effect of each optimized component was verified through actual vehicle wind tunnel tests. the results showed that compared to the current state, the new modified state had an effective drag reduction effect. Among them, the new modified state of the wide box model achieved a drag reduction of 16. 6%, the new narrow box model achieved a drag reduction of 7. 6%, and the new rearview mirror achieved a drag reduction of 8 counts, the new front exterior assembly (front bumper, front grille, corner panel, and headlights) achieved a drag reduction of 9 counts. In the reserve plan, the addition of tail wings, side skirts, and corrugated surfaces to the cargo compartment significantly reduced the drag, achieving a drag reduction of 20. 7%. Research and comparison were conducted on the effectiveness, weight, and cost of reducing wind resistance of the deflector components. A correlation study was conducted from CFD simulation analysis, wind tunnel testing, fuel consumption simulation analysis, sliding resistance testing, to fuel consumption testing. the power economy simulation results showed that under GVW4. 5T state, the wind resistance decreased by 1%, while the comprehensive fuel consumption of C-WTVC decreased by 0. 31%. © 2024 SPIE.

关键词： Wind tunnels

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A fast hardware implementation method of interrupt handling based on Armv8-M architecture 4

A fast hardware implementation method of interrupt handling ...

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4th International conference on Telecommunications, Optics, and Computer Science, TOCS 2023

作者： Ma, Jun Zhao, Hao Zhang, Xige Liu, Liang Guan, Yuan Wang, Chenxi Digital Chip Design Center Beijing Smartchip Microelectronics Technology CO. LTD Beijing China Electric Power Research Institute of Shaanxi Electric Power Company SGCC Shaanxi Xi'an China

ISBN: (数字)9781510679849

ISBN: (纸本)9781510679832

the interrupt response speed can reflect the CPU's processing speed for external events, and is a very important indicator for measuring CPU performance. In the field of real-time applications, interrupt response speed is an important manifestation of real-time performance and an important aspect of optimizing CPU implementation. When responding to interrupts, especially in CPU implementations that allow interrupt nesting, it usually involves saving the interrupt context. Only after saving the interrupt context can the CPU execute instructions related to interrupts in the interrupt handling function. this paper presents a hardware implementation scheme for backup registers. One application method is to quickly save interrupt context information to the backup registers when responding to an interrupt, and then save the contents of the backup registers to the stack parallel in the background when executing interrupt processing function instructions to improve interrupt response speed. Another application method is to restore the interrupt context from the backup register directly, or to obtain the current interrupt context information from the current interrupt stack position in the background in parallel during the execution of the interrupt processing function instruction to the backup registers. When the current interrupt returns, the interrupt context can be directly restored from the backup registers to improve the speed of interrupt return. Hardware stack identification can be used to indicate whether interrupt nesting can be performed or not. Whether interrupt context can be restored from the backup registers or not can be checked by the effective hardware identification for backup registers information. the process of parallel reading interrupt contexts from stack to backup registers in the background can be controlled by recording the stack position corresponding to each interrupt context in hardware. © 2024 SPIE.

关键词： Restoration

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