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FPGA processing technology on impact signal

FPGA processing technology on impact signal

引用

international conference on Advanced Computer Theory and Engineering, ICACTE

作者： Xiao-feng Li Ming-jie Liu Long Chen Shihu Wang Department of Electromechanical Engineering Beijing Institute of Technology China

The paper chooses the penetration impact signal as the research object. The matched filtering algorithm has been used to process the impact signal according to its frequency. On the analysis of the correlation algorithm and radix-4 FFT algorithm, the paper puts forward an implementation algorithm on FPGA of the fixed geometric structure addressing. By using fixed geometry addressing, pipeline design and block floating point structure, the data has the greater precision and dynamic range. The results show that the design is efficient, strong extensive and occupies less resource. It is an effective method to meet the high-speed digital signal processing requirements.

关键词： Random access memory

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A Convolution Theorem for the Two Dimensional Fractional Fourier Transform in Generalized Sense

A Convolution Theorem for the Two Dimensional Fractional Fou...

引用

international conference on Emerging Trends in Engineering and Technology, ICETET

作者： Vidya D. Sharma P.B. Deshmukh Department Mathematics IBSS College of Engineering Amravati Maharashtra India

The two dimensional fractional Fourier transform (FrFT), which is a generalization of the Fourier transform, has many applications in several areas including signal processing and optics. signal processing and pattern recognition algorithms make extensive use of convolution. In pattern recognition, convolution is an important tool because of its translation invariance properties. Also convolution is a powerful way of characterizing the input-output relationship of time invariant linear system. In this paper the convolution theorem for two dimensional fractional Fourier transform in the generalized sense is proved.

关键词： Fourier transforms Convolution Optics data mining

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A data acquisition system design for solid-state nanopore biosensor

A data acquisition system design for solid-state nanopore bi...

引用

international conference on BioMedical Engineering and Informatics (BMEI)

作者： Zhihu Cai Hongwen Wu Xiaojuan Wang Yan Zhang Xin Li Quanjun Liu State key laboratory of Bioelectronics South-East University Nanjing China

A data acquisition system is designed for biosensor based on nanopore, used the chip of TI TMS320VC5509A and Cypress Cy7C68013A. The major goal for our system is to convert analog data to digital data and transfer data to computer. Our system can be used in biological signal data convert already. The experimental results already proved the availability of the system. Because of using of the DSP chip and USB2.0 protocol, some image and signal processing can be made in the hardware, as well as quickly communicating with the computer is available.

关键词： Nanobioscience Nanoparticles Microcontrollers Universal Serial Bus Biosensors Computers Random access memory

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Electrocardiogram analysis based on the Karhunen-Loève Transform

Electrocardiogram analysis based on the Karhunen-Loève Tran...

引用

international conference on BioMedical Engineering and Informatics (BMEI)

作者： Hong Yan Yanjun Li China Astronaut Research and Training Center Beijing China

Karhunen-Lo32;ve Transform (KLT) is the statistically best block transform. In terms of decorrelation of the signal samples and repacking energy distributing, the signal dependent transform of KLT was used in noise... 详细信息

Karhunen-Loève Transform (KLT) is the statistically best block transform. In terms of decorrelation of the signal samples and repacking energy distributing, the signal dependent transform of KLT was used in noise eliminating, data compression and features extraction for ECG. Experimental results proved that KLT was proper for suppressing noise of low self-correlated property, e.g. white noise, but has little use for noise of high self-correlation such as power line interference. KLT got high compression ratio at the cost of low information fidelity, though the coding procedure might remove certain noise. KLT was more remarkable for its role in feature extraction, e.g. to distinguish between normal sinus beats from abnormal waveform morphologies. In conclusion, KLT is well suited in ECG processing of noise canceling and data compression, especially a good candidate for robust feature extraction.

关键词： Electrocardiography Transforms signal to noise ratio Feature extraction data compression Interference

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引用

international conference on BioMedical Engineering and Informatics (BMEI)

作者： Shiliu Lian Gang Zheng Laboratory of Biological Signal and Intelligent Processing Tianjin University of Technology Tianjin China

One similarity measurement strategy for bio-signal waveform is presented in this paper. A tunnel morph is introduced to describe the waveform. It measures the waveform not only by a value, but considers the curve feature of waveforms. Then a set of integrity definitions are presented in the paper. It contains segmentation, measurement function selection, tunnel morph width, and best partition point assigning. A case study on AECG (Ambulatory Electrocardiogram) is also presented to give a proof for the similarity measurement strategy. Through experiment, the sensitivity and positive prediction of the strategy is higher than city block, Euclidean distance and correlation coefficient. data used in the paper is from MIT/BIH.

关键词： Electrocardiography Correlation Weight measurement Cities and towns Biomedical measurements Turning

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Prestack seismic data enhancement with the common-offset common reflection surface (CO CRS) stack

Prestack seismic data enhancement with the common-offset com...

引用

international conference on BioMedical Engineering and Informatics (BMEI)

作者： Dong Li Zhenchun Li Xiaodong Sun Ning Qin Xuefeng Zhou College of Geo-resources and Information China University of Petroleum Qingdao China

A new partial common-offset common reflection surface (CO CRS) stacking method is developed in this paper to enhance the quality of sparse low fold seismic data. A multiparameter CO CRS traveltime formula is applied to compute partially stacked CRS supergathers, which have improved signal-to-noise ratio compared with the original data and are regularized by filling the gaps in cases of missing traces. These improved prestack data can be used in many conventional processing steps, e.g., velocity analysis or prestack depth migration instead of the original data. Application on model data reveals that comparing with the image section obtained from the original seismic data, the image section by the application of depth migration with the CO CRS supergathers improves not only the signal-to-noise ratio but also the continuity of reflection events, which has better imaging results.

关键词： Reflection Stacking data models Imaging Surface topography Geophysics Noise

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Analytic model of a silicon nanowire pH sensor

Analytic model of a silicon nanowire pH sensor

引用

IEEE international Nanoelectronics conference (INEC)

作者： Yun Seop Yu Hyung-Kun Park Sung Woo Hwang Doyeol Ahn Department of of Information & Control Engineering Hankyong National University Anseong Gyeonggi South Korea Information and Communication Engineering Department Korea University of Technology and Education Chungnam South Korea Research Center of Time domain Nano functional Devices and Department of Computer & Electronics Engineering Korea University Seoul South Korea Institute of Quantum Information Processing & Systems University of Seoul Seoul South Korea

An analytic model of silicon nanowire (Si-NW) pH sensor is presented. The model is based on the solution of the cylindrical Poisson equation and the nonlinear Poisson-Boltzmann equation in the Si-NW and the electrolyt... 详细信息

ISBN: (纸本)9781424435432

关键词： Silicon Sensor systems Poisson equations Nanobioscience Biosensors Circuit simulation signal processing Biological system modeling Quantum computing Dielectric constant

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Communication system for the underwater platform poseibot

引用

12th international conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines, CLAWAR 2009

作者： Alves, Richard Ruella, Carlos Cabrera, Maria Eugenia Fermín, Leonardo Cappelletto, José Díaz, Miguel Grieco, Juan Carlos Fernández-López, Gerardo Armada, Manuel Mechatronics Research Group Simon Bolivar University ELE Bldg 3rd floor Lab 302 Caracas Venezuela Industrial Automation Institute CSIC Madrid Spain Department of Automatic Control Institute of Industrial Automation - CSIC Ctra Campo Real 28500 Arganda del Rey Madrid Spain

ISBN: (纸本)9814291269

The Mechatronics research group of Simon Bolivar University has been designing and building a robotics platform, a lab prototype, intended for rescue labors, recovery issues, and mainly for ship and underwater pipelines inspection. In order to facilitate the operability of the platform some kind of autonomy or, at least, wireless connection is required for the robot control. Radiofrequency is not suitable for underwater applications and a buoy had to be developed in order to communicate with operation and control central panel. From the buoy, a wireless access point connects the robot electronics with the control laptop through an Ethernet Serial converter. A video system consisting of an IP camera and software has been developed in order to have visual information from the robot work environment. A lightning system has been added to improve underwater visibility. All the software and control system of the platform was developed and adapted for the new communication tools using LabView®. data safety has been implemented using checksum verifications and the employed bandwidth has been optimized according to the signal boost. Some tests for the video system where developed and some image processing tasks were implemented in order to show the goodness and stability of the system. A multidisciplinary team has been working for several years to develop this robot.

关键词： Robots

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DSP image process with optimized data schedule model

DSP image process with optimized data schedule model

引用

international conference on Computer Science and Information Technology (CSIT)

作者： Si-Cong Yao Zhi-Jiang Zhang Wen Wei Dan Zeng Key Laboratory of Specialty Fiber and Optical Access Networks Shanghai University Shanghai China

This paper introduces a DSP optimization model based on data structure transformation and memory schedule for real-time image process. This model implements 4 critical methods: image block, image dimension reduction, DMA transfer and ping-pong cache, which makes use of DSP hardware feature and optimizes the data schedule among the external and internal memory and CPU, while processing 2D digital signal such as images and video frames. This model provides a common strategy which can be used in the most of linear image process circumstances. Based on this model, this paper optimized a grayscale image matching algorithm and improved its efficiency, in order to verify the effectiveness of this model.

关键词： Correlation Image segmentation

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Research of end effects in Hilbert-Huang transform based on genetic algorithm and support vector machine

Research of end effects in Hilbert-Huang transform based on ...

引用

international conference on Information Sciences and Interaction Sciences (ICIS)

作者： Hong Jiang Jinghui Ma Qiang Li Yanchao Yang Information Institute of Southwest University of Science and Technology MianYang CN 621010 Mian Yang China

The end effects of Hilbert-Huang transform are produced in the Empirical Mode Decomposition(EMD) and the Hilbert transform for Intrinsic Mode Functions(IMF), which have a badly effect on Hilbert-Huang transform. In order to overcome this problem, the multi-objective allocation Genetic Algorithm (GA) to solve the kernel parameters selection of Least Squares Support Vector Machine (LSSVM)(GLHHT) is presented in this paper. Then the LSSVM is used to predict the signal before EMD. The scheme can effectively resolve the end effects, and obtain the EVIFs with explicitly physical sense and Hilbert spectrum. The simulation results from the typical definite and practical signals demonstrate that the end effects of Hilbert Huang transform could be resolved effectively, and its effects are better than prediction methods by RBF neural network and SVM, respectively.

关键词： Genetic algorithms Support vector machines signal processing Neural networks signal resolution Time frequency analysis Fault diagnosis Optimization methods data analysis Kernel

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