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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： Aruna Chakraborty Amit Konar Anisha Halder Enjun Kim Dept. of Computer Science and Engineering St. Thomas' College of Engineering and Technology Calcutta - 700 023 Department of Electronics and Tele-Communication Engineering Jadavpur University Calcutta India Department of Computer Science University of North Dakota Grand Forks ND USA

The paper employs fuzzy automata for emotion control by audio-visual stimulus. In the proposed design, emotions are represented by states, and transition of emotions is controlled by selective audio-visual stimulus. Experiments are undertaken to determine the fuzzy membership for state transitions in the automata. A fuzzy relational algebra has been used to determine the current membership distribution of the emotions from their previous value and fuzzy state transition memberships. Experiments with fifty audio-visual stimulus and one hundred subjects confirm that automatic control of emotion to a desired state from a given state can be attained with a success rate of approximately 86%.

关键词： Automata Reliability theory Equations computer science Speech recognition Silicon Algebra

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Control communications with DDS using IEC61499 Service Interface Function Blocks

Control communications with DDS using IEC61499 Service Inter...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Isidro Calvo Federico Pérez Ismael Etxeberria Guadalupe Morán Dept. of Automatic Control and Systems Engineering University of the Basque Country (UPV/EHU) Spain Dept. of Computer Languages and Systems University of the Basque Country (UPV/EHU) Spain Electronics Division Faculty of Engineering Universidad Autónoma del Estado de Mexico Toluca Mexico Electronics Division Faculty of Engineering UAEM Toluca MEXICO

The IEC61499 is an open standard for distributed control and automation. The interface between control software and hardware or communications is achieved by means of the so-called Service Interface Function Blocks (SIFB). This paper presents the guidelines to build communication SIFBs based on the emerging OMG DDS (Data Distribution Service) middleware. This specification implements in a very efficient way the Publisher/Subscriber paradigm providing significant QoS configuration possibilities. These characteristics make DDS suitable for implementing the communications among time-critical devices. By using these DDS-SIFBs within IEC61499 code generation tools, the designers of the distributed applications will be allowed to use this powerful technology in the new distributed applications.

关键词： IEC standards Middleware Hardware Quality of service Distributed control Software Process control

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Energy-optimized secure remote fingerprint authentication in a mobile environment

Energy-optimized secure remote fingerprint authentication in...

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IEEE International Conference on Consumer electronics (ICCE)

作者： Seungwoo Hong Sungju Lee Yongwha Chung Hakil Kim Sungbum Pan Human ID Research Team Electronics and Telecommunications Research Institute South Korea Human ID Research Team Dept. of Computer and Information Science Korea University South Korea Dept. of Computer and Information Science Korea University Dent. of Information and Communication Engineering Biometrics Engineering Research Center Inha University South Korea Dept. Control Instrumentation and Robot Engineering Chosun University South of Korea

ISBN: (纸本)9781424443147

To optimize the energy consumption during transmission in a secure remote fingerprint authentication system, most approaches have considered a fixed-rate compression of WSQ(Wavelet Scalar Quantization). To balance the energy consumption and the recognition accuracy, however, we need to consider the total energy consumption during compression/encryption/transmission and the quality of the given image. In this paper, we first develop an energy-accuracy prediction model. Then, from the given image, we can evaluate the quality of it. Finally, from the user's minimum requirement of the recognition accuracy, the energy-optimized compression rate under the requirement can be derived adaptively. Based on the experimental result, we show that total energy consumption of the fixed approach can be reduced by 29%.

关键词： Fingerprint recognition Authentication Image coding Image matching Energy consumption Handheld computers Cryptography Power engineering and energy Image recognition Biometrics

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Edge-based Adaptive Directional Intra Prediction

Edge-based Adaptive Directional Intra Prediction

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Picture Coding Symposium, PCS

作者： Feng Zou Oscar C. Au Jingjing Dai Chao Pang Wen Yang Xing Wen Yu Liu Dept. of Electronics and Computer Engineering The Hong Kong University of Science and Technology Department of Electronics and Computer Engineering Hong Kong University of Science and Technology Hong Kong China MTI/ECE Hong Kong Applied Science and Technology Research Institute Company Limited Hong Kong China

H.264/AVC employs intra prediction to reduce spatial redundancy between neighboring blocks. Different directional prediction modes are used to cater diversified video content. Although it achieves quite high coding efficiency, it is desirable to analyze its drawbacks in the existing video coding standard, since it allows us to design better ones. Basically, even after intra prediction, the residue still contains a lot of edge or texture information. Unfortunately, these high frequency components consume a large quantity of bits and the distortion is usually quite high. Based on this drawback, an Edge-based Adaptive Directional Intra Prediction is proposed (EADIP) to reduce the residue energy especially for the edge region. In particular, we establish an edge model in EADIP, which is quite flexible for natural images. Within the model, the edge splits the macroblock into two regions, each being predicted separately. In implementation, we consider the current trend of mode selection and complexity issues. A mode extension is made on INTRA 16 × 16 in H.264/AVC. Experimental results show that the proposed algorithm outperforms H.264/AVC. And the proposed mode is more likely to be chosen in low bitrate situations.

关键词： Pixel Automatic voltage control Region 1 Encoding Region 2 Adaptation model Bit rate

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Phase modulated radio-over-fiber link with linearized electrooptic downconversion

Phase modulated radio-over-fiber link with linearized electr...

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International Topical Meeting on Microwave Photonics (MWP)

作者： Vincent R. Pagán Bryan M. Haas T. E. Murphy Laboratory for Physical Sciences College Park MD USA Dept. of Electrical & Computer Engineering Institute for Research in Electronics & Applied Physics College Park MD USA

We demonstrate a technique for optically relaying and downconverting microwave signals. The system uses phase modulation in the transmitter and re-modulation and optical filtering in the receiver. Intermodulation dist... 详细信息

关键词： Optical transmitters Optical filters Microwave filters Optical distortion Optical receivers Optical modulation Phase modulation

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Comparison of sliding mode observer and extended Kaiman filter for sensorless DTC-controlled induction motor drive

Comparison of sliding mode observer and extended Kaiman filt...

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International (EPE-PEMC) Power electronics and Motion Control Conference

作者： Zdenëk Sutnar Zdenëk Peroutka Miran Rodič Dept. of Electromechanics and Power Electronics University of West Bohemia in Pilsen Pilsen Czech Republic Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia

This paper deals with two different observers for sensorless DTC-controlled induction motor (IM) drives. First is sliding mode observer (SMO), second is extended Kalman filter (EKF). The main objective of this paper is experimental analysis of limits of these observers and their behavior in challenging low-speed region. Theoretical conclusions presented in this paper are verified by experiments made on designed IM drive prototypes of rated power of 250 W.

关键词： Stators Rotors Observers Induction motors Kalman filters Torque Sensorless control

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Automatic code generation for embedded systems: From UML specifications to VHDL code

Automatic code generation for embedded systems: From UML spe...

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8th IEEE International Conference on Industrial informatics, INDIN 2010

作者： Moreira, Tomás G. Wehrmeister, Marco A. Pereira, Carlos E. Pétin, Jean-François Levrat, Eric Informatics Institute Federal University of Rio Grande do Sul Porto Alegre Brazil Dept. Electical Engineering Federal University of Rio Grande do Sul Porto Alegre Brazil Department of Computer Science Santa Catarina State University Joinville Brazil Centre de Recherche en Automatique de Nancy University of Nancy Vandoeuvre-Lés-Nancy France

ISBN: (纸本)9781424473007

The design of modern embedded systems becomes more complex every day, due to the increasing amount of components and distinct functionalities incorporated into a single system. To address this situation, projects' abstraction level is continuously raised. In addition, techniques to speed up the code production process have emerged. These new trends lead to an important issue: the development of a consistent engineering process for systems co-design, from the requirements phase to the source code production. In this context, the UML is an interesting option for the embedded systems projects, leading to techniques to generate source code for both hardware and software. Currently, there are some works and commercial tools to generate source code from UML specifications to mainstream languages, such as C++ and Java. However, there are few works addressing the automatic source code generation for VHDL language, which is widely used in the embedded systems development. Thus, this work proposes a methodology to generate automatically VHDL source code from UML specifications. This methodology is supported by the GenERTiCA tool. A use case focused on the use of embedded systems for the maintenance systems is presented in this paper to demonstrate the feasibility of the proposed approach. © 2010 IEEE.

关键词： Embedded systems

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A Hardware-Efficient Frequency Domain Correlator Architecture for Acquisition Stage in GPS

A Hardware-Efficient Frequency Domain Correlator Architectur...

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International Conference on Reconfigurable Computing and FPGAs (ReConFig)

作者： E. Romero-Aguirre R. Parra-Michel O. Longoria-Gandara M. Aguirre-Hernández Dept. of Electrical Engineering Mexico Electronics Systems and Computer Sc. Department ITESO Mexico Comms. Research Center-Mexico Intel Corporation Jalisco Mexico Electronics Systems and Computer Sc. Department ITESO Mexico

A frequency domain correlator (FDC) with low-complexity architecture is proposed. This signal processing module is part of FFT-based acquisition stage of a global position system (GPS). The FDC is based on a single reconfigurable core capable of computing both decimation in frequency radix-2 (DIF-2) fast Fourier transform (FFT) and decimation in time radix-2 (DIT-2) inverse fast Fourier transform (IFFT). The proposed FDC reuses the reconfigurable core together with appropriate decimation choice, providing an improvement in resource management while avoiding any additional reorder data hardware. Additionally, the FDC architecture shows a great flexibility due to three levels of parameterization which allows to fix the number of complex input samples, data width and word format. The architecture has been implemented in Altera Cyclone II and Xilinx Virtex II Pro for N-points correlation with different word lengths. The simulation and synthesis results shows that the FDC is suitable for performing acquisition stage in GPS, enabling its utilization in software define radios.

关键词： Correlation Random access memory computer architecture Correlators Frequency domain analysis Discrete Fourier transforms Field programmable gate arrays

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Lightweight key renewals for clustered sensor networks

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Journal of Networks 2010年第3期5卷 300-312页

作者： Wang, Gicheol Kim, Seunghae Kang, Daewook Choi, Deokjai Cho, Gihwan KISTI/Dept. of Computing and Networking Resources Daejeon Korea Republic of Chonnam Nat'l University/School of Electronic and Computer Engineering Gwangju Korea Republic of Chonbuk Nat'l University/CAIIT Div. of Electronics and Information Engineering Jeonju Korea Republic of

In sensor networks, sensors are likely to be captured by attackers because they are usually deployed in an unprotected or even a hostile environment. If an adversarial compromises a sensor, he/she uses the keys from the compromised sensor to uncover the keys of others sensors. Therefore, it is very important to renew the keys of sensors in a proactive or reactive manner. Even though many group key renewal schemes have been proposed, they have some security flaws. First, they employ a single group key in a cluster so that the compromise of one sensor discloses the group key. Second, they evict the compromised nodes by updating the compromised keys with noncompromised keys. This eviction scheme is useless when the non-compromised keys are exhausted due to the increase of compromised nodes. In this paper, we propose a lightweight key renewal scheme, which evicts the compromised nodes clearly by reforming clusters excluding compromised nodes. Besides, in a cluster, each member employs a pairwise key for communication with its CH (Cluster Head) so that our scheme is tolerable against sensor compromise. Our simulation results prove that the proposed scheme is more tolerable against the compromise of sensors and it is more energy-saving than the group key renewal schemes. © 2010 ACADEMY PUBLISHER.

关键词： Energy efficiency

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Study on heterogeneous alert system cooperation

Study on heterogeneous alert system cooperation

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2010 International Conference on Services Science, Management and engineering (SSME 2010)

作者： Jinhee Park Hwijin Kang Jinwook Chung Dept. of Electrical and Computer Engineering Sungkyunkwan Univ. SuwonKorea Dept. of RFID/USN Convergence Researcher Center Korea Electronics Technology Institute SeongnamKorea Dept. of MIS Dongguk Univ. Graduate School Seoul Korea

According to complexity of society,disaster has been *** a variety of disasters including natural,man-made,and social disasters has been happened frequently due to climate changes by industrialization,carelessness and misuse of human,terror,and *** alert system is important for preventing and mitigating of human victims from disasters. But diverse alert systems have been developed by own closed technology due to a lack of *** alert systems don't interworking with each other,so blind spot is generated caused of *** paper proposes alert network infrastructure and intelligent alert protocol to cooperate among heterogeneous disaster alert systems including especially civil defense alert system in Korea.

关键词： Disaster Alert System,Disaster,Disaster Warning Blind Spot,Alert Cooperation Protocol

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