检索结果-内蒙古大学图书馆

2023 Smart systems Integration Conference and Exhibition, SSI 2023

作者： Jotschke, Marcel Kumaraveeran, Prasath Buhl, Rene Zeugmann, Bjorn Fraunhofer IIS/EAS Fraunhofer Institute for Integrated Circuits Division Engineering of Adaptive Systems Dresden Germany Solutions Group Synopsys GmbH Aachen Germany

ISBN: (纸本)9798350325065

This paper presents a fully-digital delta-sigma digital-to-analog converter (DAC) for application in audio and hearing aid system-on-chips (SoCs). The slim design is initially synthesized and verified on field programmable gate array (FPGA) hardware, followed by first-time-right production of the integrated circuit in a modern 22 nm FDSOI CMOS technology. Compared to conventional mixed-signal DACs, time-to-product is low, iterative design cycles are reduced, and technology migration is eased and by the fully-digital topology. The circuit operates with a 20 bit input signal bit from serial I2S interface. Audio signal bandwidths up to 8 kHz are supported by the employed 3rd order delta-sigma modulator operating at a clock frequency of 1.024 MHz. We propose two versions of the DAC's interpolation filter with low interpolation ratio of 64. Version one is composed of two half-band filters and a sinc2 filter, and version two employs six half-band filters achieving higher accuracy. In measurements on wafer prober equipment, both design achieve signal-to-noise and distortion ratios of around 80 dBFS with an ultra-low power consumption of 48.8 μ W in best case at a supply voltage of 0.8 V. The data correlate with measurements on FPGA and simulation. The circuit is employed in a digital hearing aid SoC. © 2023 IEEE.

关键词： Hearing aids

来源：评论

学校读者我要写书评

暂无评论

A recommendation system for energy saving and user engagement in existing buildings

引用

Proceedings of the Institution of Civil Engineers: Smart Infrastructure and Construction 2022年第1期176卷 1-11页

作者： Pruvost, Hervé Calleja-Rodríguez, Gloria Enge-Rosenblatt, Olaf Jiménez-Redondo, Noemi Peralta-Escalante, Juan Jacobo Division Engineering of Adaptive Systems Fraunhofer Institute for Integrated Circuits Dresden Germany RandD Division Cemosa Málaga Spain

Ranked as the major energy-consuming sector, the building industry continuously introduces enhanced energy-management systems towards more energy efficiency. Despite technological progress, high amounts of resources are still wasted worldwide due to the wrong usage of energy systems in existing building stock. As a response, this paper proposes a recommendation system that is based on information and communication technologies and that provides building users with hands-on executable recommendations to reduce their energy consumption. Indeed, because of their lack of energy awareness and knowledge, people may need guidance in their daily usage of a building to change their energy behaviour and to save energy. For that purpose, the recommendation system analyses building operation data in real time to identify energy wastes as well as suitable energy conservation measures that shall help in saving energy. One main challenge is to provide a highly scalable solution that can be easily applied in a wider range of buildings, thus enabling resource saving at a large scale or even worldwide. For that purpose, the system relies on a model-based expert system for easy adaptation in any building regardless of its type, size and usage. © 2023 Published with permission by the ICE under the CC-BY 4.0 license. (.

关键词： Buildings

来源：评论

学校读者我要写书评

暂无评论

Green data, green future? How data spaces enable the product carbon footprint calculation for the automotive industry : A case study on Catena-X

Green data, green future? How data spaces enable the product...

引用

2024 Lock-in or log out? Wie digitale Souveranitat gelingt, INFORMATIK 2024

作者： Gieß, Anna Neumann, Jenny Jussen, Ilka Schweihoff, Julia Fraunhofer Institute for Software and Systems Engineering IT Service Providers Speicherstraße 6 Dortmund44147 Germany TU Braunschweig University Institute for Business Informatics Mühlenpfordtstraße 23 Braunschweig38106 Germany TU Dortmund University Joseph-von-Fraunhofer-Straße 2-4 Dortmund44227 Germany

ISBN: (纸本)9783885797463

Society and politics are increasingly demanding a shift to more sustainable behavior, especially from manufacturing companies. This can be a major challenge as they face technological, regulatory, economic, supply chain, and cultural hurdles when transitioning to more sustainable practices. However, data spaces offer new ways to sharing data can help to accurately calculate CO2 emissions and develop new business models based on it. To illustrate the impact of data spaces on sustainability we considered the example of the product carbon footprint. Doing so, we analyzed public data of the automotive network Catena-X and highlighted the added value for each actor in the ecosystem using the e3value modeling language. Supplementary, we transferred our findings into business model elements (value proposition, value creation and delivery, and value capture). © 2024 Gesellschaft fur Informatik (GI). All rights reserved.

关键词： Carbon sequestration

来源：评论

学校读者我要写书评

暂无评论

A Frequency Locked-Loop with Reduced Tuning Complexity for Single-Phase Grid-Tied System with Inherent DC-Offset Rejection Capability 4

A Frequency Locked-Loop with Reduced Tuning Complexity for S...

引用

4th IEEE International Conference on Sustainable Energy and Future Electric Transportation, SEFET 2024

作者： Hassan, Faridul Kumar, Amritesh Pati, Avadh Stickan, Benjamin National Institute of Technology Silchar Department of Electrical Engineering Assam India Fraunhofer Institute for Solar Energy Systems Ise Center for Power Electronics and Sustainable Grids Germany

ISBN: (纸本)9798350383997

To ensure the high performance of grid-connected systems, a synchronization unit plays a crucial role. The frequency-locked loop (FLL) has gained popularity for the synchronization and control of grid-tied converters in recent times. The presence of DC-offset in the measured grid voltage deteriorates the performance of the FLL and also affects system dynamics. The Second Order Generalized Integrator (SOGI)-FLL is widely accepted among researchers. However, achieving high performance with the SOGI-FLL depends on fine-tuned parameters. The SOGI-FLL involves trade-offs between gains, so attaining the optimal design of the gain parameters leads to more complexity. This paper proposes a simple FLL structure to enhance the performance of the FLL and grid-tied converter control under DC-offset and grid disturbances. The proposed FLL has reduced tuning complexity and robust DC-offset rejection capability with enhanced dynamic performance. © 2024 IEEE.

关键词： Locks (fasteners)

来源：评论

学校读者我要写书评

暂无评论

A Trust-based Framework for the Detection and Avoidance of Blackhole Nodes in Opportunistic Networks 9

A Trust-based Framework for the Detection and Avoidance of B...

引用

9th International Conference on Signal Processing and Communication, ICSC 2023

作者： Kundu, Protyasha Saha, Swarnadeep Kundu, Anindita Barai, Smritikona Department of Computer Science and Engineering Heritage Institute of Technology Kolkata India Department of Software Systems School of Computer Science and Engineering Vellore Institute of Technology Vellore India

ISBN: (纸本)9798350383201

An Opportunistic Network (OppNet), as opposed to a ubiquitous centralized network, relies on sporadic and opportunistic encounters between nodes to facilitate communication. The uncertainty about the node's nature presents challenges when nodes with malicious intents are present in the network. One category of malicious nodes includes blackhole nodes, which receive messages but drop them intentionally. In this paper, we introduce a novel trust function designed to detect blackhole nodes within the network. Our function has been widely tested and simulated to validate and increase the efficacy of transmission of messages in the network. We have performed a comparative analysis with various protocols (PROPHET, Epidemic and Spray And Wait) on several parameters such as Delivery Ratio, Overhead Ratio and Number of Messages dropped. The results demonstrate that our trust function is able to correctly detect and avoid blackhole nodes. We observed significant improvement in delivery ratio in Epidemic Routing (47%), Prophet (41%), and Spray And Wait Routing (17%) protocols when adjusting blackhole nodes while keeping the total network nodes constant. © 2023 IEEE.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Half space object classification via incident angle based fusion of radar and infrared sensors

引用

Journal of systems engineering and Electronics 2022年第5期33卷 1025-1031页

作者： HE Zhenyu ZHUGE Xiaodong WANG Junxiang YU Shihao XIE Yongjun ZHAO Yuxiong School of Electronic Information and Engineering Beihang UniversityBeijing 100191China Beijing Institute of Electronic System Engineering Beijing 100854China Beijing Institute of Astronautical Systems Engineering Beijing 100076China Shenzhen Institute of Beihang University Shenzhen 518038China School of Software Beihang UniversityBeijing 100191China

In this paper,we introduce an incident angle based fusion method for radar and infrared sensors to improve the recognition rate of complex targets under half space scenarios,e.g.,vehicles on the ground in this *** radar sensors,convolutional operation is introduced into the autoencoder,a“winner-take-all(WTA)”convolutional autoencoder(CAE)is used to improve the recognition rate of the radar high resolution range profile(HRRP).Moreover,different from the free space,the HRRP in half space is more *** order to get closer to the real situation,the half space HRRP is simulated as the *** recognition rate has a growth more than 7%com-pared with the traditional CAE or denoised sparse autoencoder(DSAE).For infrared sensor,a convolutional neural network(CNN)is used for infrared image ***,we com-bine the two results with the Dempster-Shafer(D-S)evidence theory,and the discounting operation is introduced in the fusion to improve the recognition *** recognition rate after fusion has a growth more than 7%compared with a single *** the discounting operation,the accuracy rate has been improved by 1.5%,which validates the effectiveness of the proposed method.

关键词： convolutional autoencoder(CAE) half space high-resolution range profile(HRRP) incident angle based fusion tar-get recognition

来源：评论

学校读者我要写书评

暂无评论

Tropical Cyclone Intensity Prediction Using Deep Learning Techniques- A Survey 4

Tropical Cyclone Intensity Prediction Using Deep Learning Te...

引用

4th IEEE International Conference on Applied Electromagnetics, Signal Processing, and Communication, AESPC 2024

作者： Ilayaraja, V. Rajamohana, S.P. Jagadeesan, S. Aishwarya, V. Rakesh, M. School of Computer Science and Engineering Vellore Institute of Technology Tamilnadu Vellore632 014 India School of Engineering & Technology Pondicherry University Department of Computer Science Puducherry Karaikal India School of Computer Science Engineering and Information Systems Vellore Institute of Technology Department of Software and Systems Engineering Tamil Nadu Vellore632 014 India

ISBN: (纸本)9798331528171

Tropical cyclones, characterized by strong winds and heavy rainfall, threaten human life in coastal regions crucial to the economy, including fisheries, agriculture, tourism, and infrastructure. Their frequent occurrence impacts communities reliant on these industries for livelihoods. Accurate estimation of tropical cyclone intensity is vital for disaster preparedness, risk assessment, and timely evacuations. Recent advancements in machine learning and deep learning have been applied to predict cyclone intensity from satellite images, providing insights into cyclone dynamics and enhancing disaster response. This paper analyzes recent research on intensity estimation using various machine learning algorithms and discusses future prospects for improving accuracy and reliability. © 2024 IEEE.

关键词： Tropical cyclone

来源：评论

学校读者我要写书评

暂无评论

THERMALLY ASSISTED PEELING AS A HIGH-QUALITY DISASSEMBLY PROCESS FOR THERMOPLASTIC TAPE WOUND COMPOSITES 23

THERMALLY ASSISTED PEELING AS A HIGH-QUALITY DISASSEMBLY PRO...

引用

23rd International Conference on Composite Materials, ICCM 2023

作者： Grenier, R. Imbert, M. Hohe, J. Balle, F. May, M. Fraunhofer Institute for High-Speed Dynamics Ernst-Mach-Institut EMI Freiburg Germany Fraunhofer Institute for Mechanics of Materials IWM Freiburg Germany University of Freiburg Faculty of Engineering Department of Sustainable Systems Engineering INATECH Freiburg Germany

来源：评论

学校读者我要写书评

暂无评论

Self-powered tactile sensor for real-time recognition of Morse code based on machine learning

引用

Nano Research 2025年第2期18卷 760-768页

作者： Shenxing Tan Yang Jiang Xujiang Chao Fei Liang Ripeng Li Tao Jiang Hai-Dong Yu Zhong Lin Wang Guangzhou Institute of Blue Energy Guangzhou 510555China Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics(IFE)and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China Beijing Key Laboratory of Micro-Nano Energy and Sensor Center for High-Entropy Energy and SystemsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China School of Computer Science(National Pilot Software Engineering School) Beijing University of Posts and TelecommunicationsBeijing 100876China

Developing lightweight,green,and flexible wearable electronics with high sensitivity and multifunctional sensing capabilities is of important significance in the field of outdoor sports,such as mountaineering,animal tracking and *** work proposes a silk fibroin fibers-based triboelectric nanogenerator(SF TENG)to harvest tiny energy from human fingertip tapping and act as a self-powered tactile *** SF-TENG adopts a green,efficient,and low-cost fabrication strategy,in which a breathable and electropositive silk fibroin fiber membrane and a silver conductive layer are prepared by electrostatic spinning and magnetron sputtering,and combined with a conductive cloth and a breathable tape to form a flexible sensor that can be attached to a human *** thin and soft portable TENG device,having a thickness of only 0.3 mm and a mass of 354 mg at the dimension of 4.5 cm×4.5 cm,can generate a maximum power density of 1.0 mW·m^(–2).Furthermore,the SF-TENG has excellent sensitivity of 1.767 mV·Pa^(–1) with good cyclic *** superior sensing characteristics provide new avenues for Morse code applications toward outdoor wearable autonomous *** proposed SF-TENG offers promising solutions in multi-scenario outdoor sport,human-machine interface interaction,and security systems.

关键词： flexible electronics triboelectric nanogenerator silk fibroin Morse code translation

来源：评论

学校读者我要写书评

暂无评论

Building-Integrated Photovoltaic Performance Modelling: Evaluation of the System Advisor Model (SAM) Based on Experimental Data from a Grid-Connected Rainscreen System 5th

Building-Integrated Photovoltaic Performance Modelling: Eval...

引用

5th International Conference on Building Energy and Environment, COBEE 2022

作者： Jazouli, Soukaïna Wilson, Helen Rose Eisenlohr, Johannes Kapsis, Konstantinos Department of Civil and Environmental Engineering University of Waterloo WaterlooON Canada Fraunhofer Institute for Solar Energy Systems Freiburg Germany

ISBN: (纸本)9789811998218

As global efforts on the electrification of the built environment intensify, buildings are expected to become energy-flexible and provide different services to the grid, including onsite electricity generation. Distributed energy sources such as building-integrated photovoltaics (BIPV) have a key role to play in this transition. Thus, it is essential for building professionals to use accurate and reliable tools to predict the energy performance of these installations. BIPV refers to photovoltaic systems that can replace conventional building components. The electrical performance of BIPV can differ from that of conventional PV due to their tilt angles, poorer rear ventilation, and partial shading by the surroundings. The objective of this study is to review existing performance models and evaluate their applicability to BIPV. In this study, the performance of a 5.3 kWp south-east facing BIPV rainscreen system of an institutional building was evaluated for one year on the basis of monitored data. High-resolution meteorological, electrical, and surface temperature data were collected and analysed. A model was created based on the BIPV system specifications using the NREL System Advisor Model (SAM). The analysis revealed that SAM can generate accurate and reliable data when it comes to predicting the electricity-generating and temperature behaviour of a BIPV façade, with an overall coefficient of determination (R2) ranging from 48 to 95%, depending on the simulation timestep used. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Specifications

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：