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2023 International Conference on Computer, Internet of Things and Smart City, CIOTSC 2023

作者： Zhang, Yuqi Technology Co. Ltd Artificial Intelligence R&D Department ShangHai China

ISBN: (纸本)9798350306569

Electric power is an important basic industry in social development and the production and living structure of the people, and plays an important role in the national economy and people's livelihood. As the cornerstone of national operation, the power system bears the basic mission of supporting national economic and social development. How to effectively protect the power system automation data and realize the stable operation of the system has become a huge challenge for the development of power enterprises. In order to solve this dilemma, based on the research of power system structure, data type and the development status of security protection, combined with computer electronic technology, this paper carried out in-depth research on data security protection in power system automation, and built a security protection model based on its theoretical basis. In order to verify the effectiveness of the model, this paper tested it from three dimensions: data security protection degree, risk processing efficiency and response time, and compared it with the traditional security protection model. The test results showed that under different test cases, the maximum protection degree of the data security protection model in this paper has reached 95.16%, and its average protection degree was about 91.88%. From the specific test results, it can be seen that the application of data security protection in power system automation based on computer electronic technology has strong operability. © 2023 IEEE.

关键词： Power systems computer aided design

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degradation Analysis of Aged Fuel Cell Stack via Polarization Change Curve

Degradation Analysis of Aged Fuel Cell Stack via Polarizatio...

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2024 Vehicle Powertrain diversification technology Forum, VPd 2024

作者： Pan, Chenbing Wu, Hailong ruyi, Wang Anhui Ruihypower Technology Co. Ltd. China Anhui Ruihypower Technology Co. Ltd. R&D Department China

A 20-cell self-humidifying fuel cell stack containing two types of MEAs was assembled and aged by a 1000-hour durability test. To rapidly and effectively analyze the primary degradation, the polarization change curve is introduced. As the different failure modes have a unique spectrum in the polarization change curve, it can be regarded as the fingerprint of a special degradation mode for repaid analysis. By means of this method, the main failure mode of two-type MEAs was clearly distinguished: one was attributed to the pinhole formation at the hydrogen outlet, and another was caused by catalyst degradation only, as verified by infrared imaging. The two distinct degradation phases were also classified: (i)conditioning phase, featuring with high decay rate, caused by repaid ECSA change from particle size growth of catalyst. (ii) performance phase with minor voltage loss at long test duration, but with rH cycling behind, as in MEA1. Then, an effective H2-pumping recovery is conducted, and MEA performance rejuvenated to the level of phase transition time (218h). It indicated the voltage loss at the performance phase is reversible, while the conditioning phase is not as expected. Therefore, there are few perquisites for the durability test, including proper selection of current density point as a baseline, test duration beyond the conditioning time, and effective recovery procedure;otherwise, the lifetime of the stack would be extremely underestimated. As massive voltage loss is from catalyst degradation in the conditioning phase for all MEAs and featuring irreversible, more understanding about catalyst degradation at the conditioning phase is suggested for further durability improvement. © 2025 SAE International.

关键词： Infrared imaging

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Iterative weakly supervised semantic segmentation network with fused superpixel clues 19

Iterative weakly supervised semantic segmentation network wi...

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19th International Conference on Natural Computation, Fuzzy Systems and Knowledge discovery, ICNC-FSKd 2023

作者： Xiaoning, Wu ruixin, Li Xinli, Zhu Siyan, Zhu daowang, Cui North Automatic Control Technology Institute Third R&d Department Taiyuan China

ISBN: (纸本)9798350304398

Most weakly supervised semantic segmentation networks lack semantic information between pixels, resulting in incomplete segmentation of targets. In this paper, we propose an iterative weakly supervised semantic segmentation network with fused superpixel clues. First, we generate attention class activation maps from the intermediate layers of the classification network, then use superpixel clues to optimize the class attention region and generate pseudo-labels with pixel correlations. After training the semantic segmentation network on these pseudo-labels, we continue to input the predicted pixel map iteratively into the superpixel network and the semantic segmentation network until the entire process is complete and the final semantic segmentation map is obtained. results on PASCAL VOC 2012 demonstrate that the proposed method has superior segmentation performance compared with other weakly supervised semantic segmentation methods. © 2023 IEEE.

关键词： Superpixels

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A Novel Parasitic Mushroom-Like Structure with High Gain Microstrip Patch Antenna for Broadband Applications

A Novel Parasitic Mushroom-Like Structure with High Gain Mic...

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International Conference on Machine Learning and Big data Analytics, ICMLBdA 2023

作者： Sahaya Sheela, M. Syam Sudheer Babu, G. Sai durga Prasad, S.N.V. Vasanth Kumar, M.d. Department of Electronics and Communication Engineering Vel Tech Rangarajan Dr Sagunthala R&D Institute of science and Technology Chennai India

ISBN: (纸本)9783031513374

In this research, a design for a microstrip patch antenna loaded with a parasitic mushroom-like structure is proposed. Antenna components include a rectangular microstrip patch as the main radiating element and one or more metallic patches as parasitic elements, separated by a dielectric layer. The parasitic patches are arranged in a pattern that resembles a mushroom growth, and their dimensions are optimized to improve the antenna’s performance. According to simulation results, the suggested antenna has a bandwidth of up to 20% and a high gain of up to 10dBi, which is much broader than that of a typical microstrip patch antenna. The radiation characteristics of the antenna are also improved, with a more uniform radiation pattern and higher front-to-back ratio. The suggested antenna design is appropriate for a variety of uses, including wireless communications, radar systems, and satellite communications, which call for high gain and broad coverage. The simplicity and low profile of the antenna make it easy to manufacture and integrate into various systems. Overall, the proposed parasitic mushroom-shaped microstrip patch antenna, which has broadband and high gain, is a promising solution for achieving improved antenna performance without increasing the antenna’s size or complexity. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Slot antennas

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5G ready: A Compact Two-Port Antenna for Sub-6GHz Applications

5G Ready: A Compact Two-Port Antenna for Sub-6GHz Applicatio...

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2025 International Conference on Multi-Agent Systems for Collaborative Intelligence, ICMSCI 2025

作者： Murugan, C. Kavitha, T. Vel Tech Rangarajan Dr. Sagunthala R&d Institute of Science and Technology Department of Electronics and Communication Chennai India

ISBN: (数字)9798331509828

ISBN: (纸本)9798331509828

The new design is proposed based on Two-port antenna and Simulation outcome with an operating frequency range of 3.3-5.,5GHz, which covers N77, N78, N79 and Wireless Local Area Network (WLAN) bands. The newly coined antenna design achieves gain of 3dB and ensure trustworthy and effective communication in 5th Generation networks. Multiple Input and Multiple output (MIMO) parameters like Envelope Correlation Coefficient (ECC), Total Active reflection Coefficient (TArC)., diversity gain, Channel Capacity Loss (CCL) and radiation Efficiency which are measured in a multi-antenna system. The proposed antenna design illustrates excellent MIMO performance which achieves 5G Privileges likeenhanced mobile broadband (eMBB), ultra-reliable low-latency communications (UrLLC), and massive machine-type communications (mMTC). The Compact Size and Antenna radiation which makes it fit into 5G devices, like smartphones, tablets, and laptops. © 2025 IEEE.

关键词： Wireless local area networks (WLAN)

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A Lightweight Approach for Large CAd Models Based on Lazy Loading 18

A Lightweight Approach for Large CAD Models Based on Lazy Lo...

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18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Tang, ruiHeng Liu, Fei Xiao, Xu Caxa Technology Co. Ltd. R&d Department Beijing China

ISBN: (纸本)9798350312201

In response to the challenges of slow loading speed and the difficulty of computer performance when handling large assemblies in 3d CAd environments, we propose a lightweight solution based on lazy data loading. This approach involves hierarchical and structural data division, and an efficient lazy data system that avoids premature loading of redundant data. This approach not only enhances the loading speed, but also improves the computer's ability to handle large assemblies efficiently. After implementing our proposed solution in CAXA 3d, our tests show that loading speed is improved, memory usage is reduced, and overall system performance is significantly enhanced. © 2023 IEEE.

关键词： Computer aided design

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Improving Energy Efficiency in Wireless Sensor Network with Intelligent Energy Prediction Using Machine Learning Approach

Improving Energy Efficiency in Wireless Sensor Network with ...

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2024 International Conference on Computational Intelligence for Green and Sustainable Technologies, ICCIGST 2024

作者： Panneerselvam, Bhuvaneswari devarasu, Neelamegam Pasupulati, Baburao Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Department of Electronics and Communication Engineering Chennai India Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Department of Electrical and Electronics Engineering Chennai India

ISBN: (纸本)9798350381887

In our day-to-day life, one of the emerging roles of green energy in wireless sensor network shoves the investigations of recent technological and economical solutions for solar energy. Saving external energy is one of the fundamental factors in any wireless sensor network with limited storage capacity. due to different environmental conditions, the energy conversation is too fast in the solar system and unconstrained atmospheric resource energy leads to operate the rechargeable batteries in the outdoor systems. However, some fluctuations occur in the environmental side. It is very crucial to predict the unnecessary errors in the sensing devices. Also, to examine the future energy and to maintain the system reliability in the solar powered wireless sensor network, the accurate prediction models are required. In this work, the Energy Efficient Nonlinear Autoregressive (EENA) algorithm using Machine Learning approach is proposed. With this approach, the algorithm effectively predicts the future energy status with respect to different time slots. The proposed algorithm gives a promising solution to prolong a battery life and the accurate predictions in the outdoor energy harvesting network. © 2024 IEEE.

关键词： Energy Harvesting Error Prediction Machine Learning Sensor network Solar

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Virtual Instrumentation under Supervisory Control for Safe Water Level Monitoring 5

Virtual Instrumentation under Supervisory Control for Safe W...

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5th International Conference on Circuits, Control, Communication and Computing, I4C 2024

作者： Ezilarasan, M.r. Gnanaprakash, V. Sreelakshmy, r. Preethi, d. rajesh, G. rahul, S.G. Vel Tech Rangarajan Dr. Sagunthala R&d Institute of Science and Technology Department of Electronics and Communication Engineering Chennai India Vel Tech Rangarajan Dr. Sagunthala R&d Institute of Science and Technology Department of Computer Science Engineering Chennai India

ISBN: (纸本)9798331528539

Water supplies are essential to farming and agriculture productivity as well as to our standard of living. Traditional water supply and quality monitoring systems need a large workforce in addition to complicated infrastructure. Agriculture depends heavily on the ability to control the level of water of a water supply, such as a water tank, bore well, etc It is difficult to monitor water tanks in real time using traditional water distribution methods. We can adjust to the newest technology in order to remove the complexity and streamline the system. For the water level monitoring system, a PId Control scheme that is solely software-oriented is thus created using *** Internet of Things (IoT) concept is used for continuous monitoring. In addition to tracking usage and gathering data via Wi-Fi and LAN, the server also keeps an eye on how much water is wasted at each outlet due to overuse. An alert is mailed to the user to let them know when water usage exceeds a predetermined level. With the help of this, customers can utilise a laptop or mobile device with an internet connection to continuously monitor water levels To prevent hacking, it additionally offers verified user access to this system. The government and authorities may monitor and manage the water supply with the help of this suggested water level monitoring system, which also enables individuals, schools, hospitals, businesses, department stores, malls, and agricultural areas to keep track of how much water they waste. © 2024 IEEE.

关键词： Water tanks

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A Feature Selection Technique–Based Approach for Author Profiling Using Word Embedding Techniques 8th

A Feature Selection Technique–Based Approach for Author Pro...

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8th International Conference on Computers, Management and Mathematical Sciences, ICCM 2022

作者： Kavuri, Karunakar Kavitha, M. CSE Department Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai India

ISBN: (纸本)9783031511660

Textual data are tremendously increasing on the World Wide Web through different social networking platforms, such as blogs, review sites, Facebook, Instagram, Twitter, etc. Crimes or frauds are also growing with the development of text in these platforms. Most of the users on these platforms create accounts with false information and send harassing and threatening messages. Knowing the details or basic information of text posted on these platforms is a very important task to control fraud. Author profiling (AP) is one technique used by the research community and social network administrators to know the author’s information related to messages posted on social networking platforms. Author profiling is a method of detecting demographic profiles such as age, gender, education, etc., of authors based on their written texts. Author profiling techniques are used in various applications of text processing, such as marketing, forensic analysis, and security-related fields. Most author profiling techniques use the content information of text to differentiate the writing styles of authors. The dataset contains a huge number of content words and, the identification of relevant words for differentiating the writing style of different authors is one challenging task to the research community. Feature selection algorithms are proposed by the researchers to find relevant features in the dataset. In this article, we developed a feature selection technique–based approach by using word embedding techniques for predicting the gender and age from the selected dataset. The PAN competition author profiling datasets are considered in this article for experimentation. In the proposed approach, word embedding techniques are used for converting words into word vectors. The similarity measure is used for finding the similarity among the word vectors. Similar words are grouped into clusters. Select the most important words from these clusters and consider them for experimentation. Selected w

关键词： Embeddings

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Boosting ultra-wide temperature dielectric stability of multilayer ceramic capacitor through tailoring the combination types of polar nanoregions

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Journal of Materiomics 2024年第4期10卷 751-761页

作者： Jiacheng Liu Kaibiao Xi Beibei Song Huarong Cheng Xiaole Yu Mupeng Zheng Mankang Zhu Yudong Hou College of Materias Science and Engineering Key Laborutory of Advanced Functional Materials Education Ministry of China Beijing University of TechnologyBeijing100124China Materials R&D Department Beijing Yuanliu Hongyuan Eletronic Technology CompanyLtdBeijing102600China

With the rapid development of space exploration and new energy vehicles,it is urgent to build ultra-wide temperature multilayer ceramic capacitors(UWT MLCCs)to match electronic circuits that can withstand harsh environmental *** ferroelectrics with diffuse phase transition feature are potential dielectrics for the construction of UWT ***,how to ensure high dielectric constant together with low dielectric loss in the wide temperature region is still a big ***,the above difficulties are addressed by tailoring the combination types of polar nanoregions(PNrs)in the(1-x)(0.8Na_(0.5)Bi_(0.5)TiO_(3)-0.2K_(0.5)Bi_(0.5)TiO_(3))-xNaTaO3(NBT-KBT-xNT)*** with PNrS types of P4bm+r3c and P4bm+Pbnm,the combination type of P4bm+Pbnm+r3c PNrs in NBT-KBT-0.31NT is the most beneficial to obtain comprehensive excellent dielectric performance because it can balance the relationship between high dielectric constant and temperature stability over a wide temperature ***,by optimizing the laminating pressure and co-firing temperature to realize a tight interfacial structure between the dielectric layer and the Pt inner electrode,a record-high dielectric constant(er=(907%±15%))together with low dielectric loss(tan δ≤0.025)is achieved over an ultra-wide range from-61℃ to 306℃ for NBT-KBT-0.31 NT MLCC,demonstrating that tailoring the combination types of PNrs is a powerful strategy in designing UWT MLCC dielectrics.

关键词： Lead-free dielectrics Ultra-wide temperature Multilayer ceramic capacitor Polar nanoregion

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