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Ultra-lightweight true random number generators

ELECTRONICS LETTERS 2010年第14期46卷 988-989页

作者： Wu, J. O'Neill, M. Queens Univ Belfast ECIT Belfast Antrim North Ireland

A series of ultra-lightweight digital true random number generators (TRNGs) are presented. These TRNGs are based on the observation that, when a circuit switches from a metastable state to a bi-stable state, the resulting state may be random. Four such circuits with low hardware cost are presented: one uses an XOR gate;one uses a lookup table;one uses a multiplexer and an inverter;and one uses four transistors. The three TRNGs based on the first three circuits are implemented on a field programmable gate array and successfully pass the DIEHARD RNG tests and the National Institute of Standard and Technology (NIST) RNG tests. To the best of the authors' knowledge, the proposed TRNG designs are the most lightweight among existing TRNGs.

关键词： XOR gate circuit switches field programmable gate array field programmable gate arrays inverter lookup table multiplexer random number generation signal generators transistors ultralightweight digital true random number generators

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Stand-alone portable digital body sound data acquisition device

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INTERNATIONAL JOURNAL OF EMBEDDED SYSTEMS 2010年第3-4期4卷 292-297页

作者： Alouani, Ali Elkeelany, Omar Abdallah, Mohammed Tennessee Technol Univ Dept Elect & Comp Engn Cookeville TN 38505 USA

This paper discusses the design and implementation of a new generation of digital stethoscopes capable of collecting and processing body sound without the need of a personnel computer and hardware interface. The cost of the proposed device is a fraction of that of the data acquisition system used with current digital stethoscopes to collect body sound in a digital format. The new design uses system-on-chip technology and hardware- software co-design to integrate all the functions needed by this application into a single field programmable gate array (FPGA). The new design strategy saves hardware, space, and power consumption. It also allows for signal processing and data interpretation in the same device. The body sound device has been implemented and tested. Its performance compares very favourably to that of existing PC-based digital stethoscope.

关键词： stethoscope personnel computer integrated data acquisition network-ready medical device field programmable gate array FPGA flash memory

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Acceleration of feature extraction for FPGA based speech recognition

Acceleration of feature extraction for FPGA based speech rec...

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Conference on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2010

作者： Arminas, Vytautas Tamulevicius, Gintautas Navakauskas, Dalius Ivanovas, Edgaras Vilnius Gediminas Tech Univ Dept Elect Syst Naugarduko Str 41 Vilnius Lithuania Inst Math & Informat Recognit Proc Dept Vilnius Lithuania

ISBN: (纸本)9780819482358

The paper describes a field programmable gate array implementation of the main part of speech recognition system - feature extraction. In order to accelerate recognition the whole cepstral analysis scheme is implemented in hardware by the use of intellectual property cores. Two field programmable gate array devices are used for evaluation. Comparative experimental results of four different implementations are presented. They grounds achieved 29 times faster speech analysis in comparison with software based analysis subsystem.

关键词： field programmable gate array feature extraction cepstral analysis speech recognition

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FPGA-Realization of a Sensorless Speed Control IC for IPMSM Drive

FPGA-Realization of a Sensorless Speed Control IC for IPMSM ...

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36th Annual Conference of the IEEE Industrial-Electronics-Society (IECON)/4th IEEE International Conference on E-Learning in Industrial Electronics/IES Industry Forum

作者： Kung, Ying-Shieh Huang, Chung-Chun Huang, Liang-Chiao So Taiwan Univ Dept Elect Engn Taipei Taiwan Ind Technol Res Inst Green Energy & Environm Res Labs Hsinchu Taiwan

ISBN: (纸本)9781424452262

Based on FPGA (field programmable gate array) technology, the realization of a sensorless control IC for IPMSM (Interior Permanent Magnet Synchronous Motor) drive is presented in this paper. Firstly, a mathematical model for IPMSM is derived and an extended EMF (Electro-Motive Force) or EEMF is defined. Secondly, a rotor position is estimated by using a sliding mode observer (SMO). These estimated values are feed-backed to the current loop for vector control and to the speed loop for speed control. Thirdly, an FSM (Finite State Machine) method is adopted to describe the overall SMO-based rotor position estimator. Further, using novel FPGA technology, the realization of a sensorless speed control IC is also described. At last, an experimental system is established to verify the effectiveness of the proposed sensorless speed control IC, and some experimental results are confirmed theoretically.

关键词： FPGA realization IPMSM drive electric potential extended electromotive force field programmable gate array field programmable gate arrays finite state machine finite state machines interior permanent magnet synchronous motor permanent magnet motors rotor position estimator rotors sensorless machine control sensorless speed control integrated circuit sliding mode observer synchronous motor drives variable structure systems vector control velocity control

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Design of the data acquisition and real-time imaging system for UIRFPA

Design of the data acquisition and real-time imaging system ...

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5th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology

作者： Pan, Taoli Xie, Guangzhong Zhou, Yun Jiang, Yadong Wu, Zhiming Univ Elect Sci & Technol China Sch Optoelect Informat State Key Lab Elect Thin Films & Integrated Devic Chengdu 610054 Peoples R China

ISBN: (纸本)9780819480880

This paper presents a useful design of the time-series driving, data acquisition and real-time imaging system for the uncooled infrared focal plane arrays (UIRFPA). The field programmable gate array (FPGA) is used as the central processing unit (CPU) in the system, which can control and harmonize all functional modules. The Ping-Pong structure is employed to realize real-time imaging. The SDRAM is adopted for the data storage to fulfill the need of mass memory. And there are also some switches and keys to provide human-machine interaction. This system works for UIRFPA with resolution of 320x240 steadily and authoritatively. The noise doesn't merge in main signals, so the system can extract the signals of UIRFPA accurately and efficiently.

关键词： uncooled infrared focal plane arrays data acquisition real-time imaging field programmable gate array

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Real-Time Fault Diagnostics for a Permanent Magnet Synchronous Motor Drive for Aerospace Applications

Real-Time Fault Diagnostics for a Permanent Magnet Synchrono...

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IEEE Energy Conversion Congress and Exposition (ECCE)

作者： Odavic, Milijana Sumner, Mark Wheeler, Pat Li, Jing Univ Nottingham Univ Pk Nottingham NG7 2RD England

ISBN: (纸本)9781424452873

This paper describes the development and implementation of a permanent magnet synchronous machine controller for safety critical applications which embeds independent real-time mechanical-fault diagnostics into the drive controller. The drive is intended for aerospace applications and therefore must employ an ASIC or FPGA as the main control "processor" to provide a more suitable route to flight-product certification. Motor Current Signature Analysis (MCSA) is employed to indicate the development or existence of faults within the drive system and this is achieved by embedding a real-time frequency analysis of the motor current within the FPGA, operating independently of the motor control. Experimental results are provided to validate the proposed control and condition monitoring.

关键词： field programmable gate array permanent magnet motor fault diagnosis aircraft maintenance

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A LOW COMPLEXITY SOLUTION FOR INTEGRATING VIDEO SURVEILLANCE AND RFID IN REMOTE SCENE MONITORING

A LOW COMPLEXITY SOLUTION FOR INTEGRATING VIDEO SURVEILLANCE...

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20th Asia Pacific Microwave Conference (APMC 2008)

作者： Tsang, P. W. M. Yung, K. N. So, K. H. Cheung, K. W. K. City Univ Hong Kong Dept Elect Engn Kowloon Hong Kong Peoples R China

In this article, we reported for the first time, a low complexity field programmable gate array solution for integrating video surveillance into RFID units. The method is comprised of two major building blocks, namely a RFID transmitter operating at a maximum bandwidth of 250 kbps, and a near computation free image compression engine based on an enhanced Decomposed Adaptive Decimation scheme. (C) 2010 Wiley Periodicals, Inc. MIcrowave Opt Technol Lett 52 775-779, 2010.

关键词： RFID video surveillance decomposed adaptive decimation field programmable gate array

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A System on Chip approach to enhanced learning in interdisciplinary robotics

A System on Chip approach to enhanced learning in interdisci...

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IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Sorensen, Anders Stengaard Falsig, Simon Univ So Denmark Maersk Mc Kinney Moller Inst DK-5230 Odense M Denmark

ISBN: (纸本)9781424466757

To sustain advanced interdisciplinary teaching and learning in the rapidly growing and diversifying field of robotics, we have successfully employed FPGA based System on Chip (SoC) technology to provide abstraction between high level software and low level I/O- and control hardware. Our approach is to provides students with a simple FPGA based framework for hardware access, and hardware I/O development, which is independent of computer platform and programming language, and enable the students to add to, or change I/O hardware in accordance with their skills. We have tested the framework in an embedded systems course and various student projects, and have found that it greatly enhance the students abilities to control hardware from software, and dramatically reduce the time spent on software <-> hardware interfacing. As the framework is also scalable, it can support projects from controlling a single LED, to complex modular and aggregated robots with demands for high bandwidths and low jitter in the control loop.

关键词： FPGA control engineering education control hardware educational courses embedded systems embedded systems course field programmable gate array field programmable gate arrays hardware I-O development hardware access interdisciplinary robotics programming language robots student project system on chip system-on-chip teaching

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Accelerating Viola-Jones Face Detection to FPGA-Level using GPUs

Accelerating Viola-Jones Face Detection to FPGA-Level using ...

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18th IEEE Annual International Symposium on field-programmable Custom Computing Machines (FCCM)

作者： Hefenbrock, Daniel Oberg, Jason Nhat Tan Nguyen Thanh Kastner, Ryan Baden, Scott B. Univ Calif San Diego Dept Comp Sci & Engn La Jolla CA 92093 USA

ISBN: (纸本)9780769540566

Face detection is an important aspect for biometrics, video surveillance and human computer interaction. We present a multi-GPU implementation of the Viola-Jones face detection algorithm that meets the performance of the fastest known FPGA implementation. The GPU design offers far lower development costs, but the FPGA implementation consumes less power. We discuss the performance programming required to realize our design, and describe future research directions.

关键词： Graphical Processing Unit Face Detection field programmable gate array Acceleration

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FPGA-based Embedded System for Ultrasonic Positioning

FPGA-based Embedded System for Ultrasonic Positioning

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Sanchez, Alberto de Castro, Angel Glez-de-Rivera, Guillermo Garrido, Javier Univ Autonoma Madrid HCTLab Madrid Spain

ISBN: (纸本)9781424463916

This paper presents an FPGA-based ultrasonic location system. This system uses low-cost FPGAs and ultrasonic transducers to provide 3-D location to mobile nodes in an indoor environment. Synchronization is reached using the radiofrequency transducers that mobile nodes usually include. FPGAs have been used to sample ultrasonics and radiofrequency inside a custom peripheral which is attached to a MicroBlaze soft-processor. The calculus of the position of the mobile node is accomplished inside this processor.

关键词： field programmable gate array location ultrasonics trilateration

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