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Fingerprint singular points extraction based on the properties of orientation model

The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 98-104页

作者： SU Fei SUN Peng WANG Bo-tao CAI An-ni School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Department of Automation Tsinghua University Beijing 100084 China College of Electronic Information and Control Engineering Beijing University of Technology Beijing 100124 China

A novel method for fingerprint singular points extraction including location and orientation is proposed based on some properties of the orientation field models. Singular points are located by clustering the results of corner detection. Then, through examining the sub-block orientation fields at a number of selected positions on concentric circles centered about the located singular point, an iterative method based on the orientation differences is proposed to compute the orientation of the core point. Experimental results on NIST4 and FVC2002 four databases demonstrate the proposed method can consistently locate singular points with the high accuracy. The location and orientation of the detected singular points can be used for alignment （translation and rotation） parameters in fingerprint matching.

关键词： fingerprint orientation model singular points core delta

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Design of low cost wireless sensor network for Health Monitoring of larger structures

Design of low cost wireless sensor network for Health Monito...

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5th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII-5 2011

作者： Devendra, Chougule Prasad Plascencia, Alfredo Chavez Department of Civil Engineering Aalborg University Aalborg Denmark Department of Electronic Systems Automation and Control Aalborg University Aalborg Denmark

ISBN: (纸本)9781450323307

To monitor the structural health of civil and mega mechanical structures, a wired sensor system is been used traditionally. From an economical and a maintenance point of view, the traditional wired SHM systems have limitations when used in offshore wind turbine, wave energy devices and other civil structures. Wireless sensor is getting importance because of its low price and suitability for mentioned applications. Commercially the available wireless sensor systems for SHM are expensive;hence there is a need of cheap wireless sensor network. A low cost wireless sensor network (WSN) for a Health Monitoring of these structures is proposed in this work. This work is divided into two tasks one, design of wireless sensor units (WSU). To measure the response of the system a WSU is designed by using available standard electronic components. This WSU consists of one acceleration senor, micro-controller, a radio frequency (RF) transceiver, and a battery power supply. The second part of the work consists of acceleration measurements for a four starry shear frame which is excited by shaker. Then the Autoregressive (AR) model coefficients are determined remotely for measured data at each starry of the shear frame. These coefficients are transferred to the master WSU which is connected to the computer using USB port for comparison with stored data base to recognize the pattern. In the extension to this work a Damage Index calculations could be performed at remote WSU.

关键词： Wireless sensor networks

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Predicting flow rate of V-shape custom tank using derivative free recursive algorithm

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Journal of Applied Sciences 2011年第7期11卷 1279-1284页

作者： Tawfeig, H. Asirvadam, Vijanth S. Saad, N. Department of Electrical and Electronic Engineering Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Malaysia Department of Electrical and Electronic Engineering Intelligent Signal and Umaging cluster Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Malaysia Department of Electrical and Electronic Engineering Intelligent Automation and Control Clusters Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Malaysia

One of the basic elements that any plant process facility consists of is control tank system. Custom tank is one type of these control tank systems. Proper controlling of this element will help the facility to work smoothly and it will increase the reliability of the whole system. This study is looking into predicting the state of variables that completely represent the dynamics the custom tank (height of fluid or output flow rate). This prediction can be used in controlling the custom tank (predictive control). The study invoSlve MATLAB SIMULINK simulation program for the custom tank along with different prediction models. The obtained results showed that introducing Multilayer Perceptron (MLP) Neural Network architecture improve the prediction significantly where different algorithms, Recursive Kalman Filter (RKF) and Extended Kalman Filter (EKF) have been used simultaneously to estimate fluid height and output flow. It further shows that introducing centered finite difference or derivative free with EKF improve the performance of the network. © 2011 Asian Network for Scientific Information.

关键词： Tanks (containers)

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Forward Modeling to Study topography Effects on EM Signal Using FEM

Forward Modeling to Study topography Effects on EM Signal Us...

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National Postgraduate Conference

作者： Nazabat Hussain M. N. Karsiti Asif Iqbal Automation and Control System Group Department of Electrical & Electronic Engineering Universiti Teknologi PETRONAS

ISBN: (纸本)9781457718823

In electromagnetic (EM) geophysical surveys the most revealing description of EM distortion occurs due to heterogeneity of medium. Prior to determine EM field behavior for stratified earth model, there is need to understand EM field behavior for topography and single interface model. This study involve ingle interface model which embodies two very different situations of conductive and non-conductive half space using finite-element (FE) method. The efficient and accurate modeling is used to calculate the EM field at interface with topography of layered media. The finite element algorithm is implemented in MATLAB and results obtained are also discussed in this chapter.

关键词： Finite-elements Glarkian scheme Electromagnetic geophysical surveys

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Sensorless Variable Speed Single-Phase Induction Motor Drive system

Sensorless Variable Speed Single-Phase Induction Motor Drive...

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IEEE Interantional Conference on Industrial Technology

作者： M. Caruso V. Cecconi A.O. Di Tommaso R. Rocha Department of Electrical Electronic Telecommunications and Automation Engineering University of Palermo Vialle delle Scienze Ed. 9 90128 Palermo Italia Department of Control and Automation Engineering School of Mines Federal University of Ouro Preto Campus Morro do Cruzeiro 35400-000 Ouro Preto Minas Gerais Brazil

ISBN: (纸本)9781467303408;9781467303422

It is usual find single-phase induction motor (SPIM) in several house, office, shopping, farm, and industry applications, which are become each time more sophisticated and requiring variable speed drives. Considering the low cost of this machine, the adoption of sensorless speed control is the more reasonable option for SPIM drives. This paper presents a proposal for sensorless variable speed SPIM drive based on direct rotor field orientation techniques. An observer based on two independent linear close-loop control systems provides the estimation of the rotor flux and speed from the measurements of the stator currents and voltages. These estimatives are used by close-loop systems for speed control and flux regulation in order to determine the voltages to be applied in the main and auxiliary windings by a three-legs VSI inverter. None variable transformation is used in this proposal in order to eliminate the asymmetry of the stator windings of the SPIM. The performance of the proposed sensorless speed control is satisfactorily demonstrated from computer simulations considering two situations: variations on rotor speed reference and the application of mechanical load.

关键词： Sensorless Variable Speed Drives Single-Phase Induction Motor Direct Field Orientation

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Interoperability platform for virtual and remote laboratories

Interoperability platform for virtual and remote laboratorie...

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2012 9th International Conference on Remote engineering and Virtual Instrumentation, REV 2012

作者： Fernandez, J. Bragós, R. Cabrera, M. Abelló, A. Arroyo, N. González, D. Garófano, F. Cortés, A. Fabra, A. Escola Tècnica Superior d'Enyineria de Telecomunicacions de Barcelona/Telecom-BCN Universitat Politècnica de Catalunya - BarcelonaTech Barcelona Spain Facultat d'Informàtica de Barcelona Universitat Politècnica de Catalunya - BarcelonaTech Barcelona Spain Everis Av. Diagonal 605 E-08028 Barcelona Spain Department of Automatic Control Universitat Politenica de Catalunya - BarcelonaTech C/ Jordi Girona 1-3 E-08034 Barcelona Spain Department of Electronic Engineering Universitat Politenica de Catalunya-BarcelonaTech C/ Jordi Girona 1-3 E-08034 Barcelona Spain Department of Signal Theory and Communications Universitat Politenica de Catalunya-BarcelonaTech C/ Jordi Girona 1-3 E-08034 Barcelona Spain Department of Service and Information System Engineering Universitat Politenica de Catalunya-BarcelonaTech C/ Jordi Girona 1-3 E-08034 Barcelona Spain

ISBN: (纸本)9781467325424

This communication describes the interoperability platform that has been developed at the Technical University of Catalonia (UPC) to integrate the access to different virtual and remote laboratories. Up to eleven laboratories that belong to the GilabViR group of interest in virtual and remote laboratories in our University have been analyzed to generate a set of specifications and develop the architecture and the applications that would allow its access through the university LMS system. Although the current LMS platform (Atenea) is implemented over Moodle 1.9, the new modules have been developed using Moodle 2.2.1 given that the migration to this version will be done in the next months. The interoperability platform defines new Moodle modules that allow the interconnection between the LMS system and a set of laboratories and provide the intrinsic LMS features (user identification, activity recording, educational materials repository, ...). There are modules that allow the interaction with a web service interface giving access to the laboratory, with Java applet virtual laboratories and others that make possible the link with LabView based remote laboratories, all of them with recording of experiment parameters in SQL databases placed in the experiment servers. © 2012 IEEE.

关键词： Interoperability

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Estimation of transition range bin in clutter edge for space time adaptive processing

Estimation of transition range bin in clutter edge for space...

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6th International Conference on Radar, RADAR 2011

作者： Tang, Bo Tang, Jun Peng, Yingning Lu, Junjiang National Key Laboratory of Information Control Technology for Communication System of China China Department of Electronic Engineering Tsinghua University Beijing 100084 China Electronic Engineering Institute Hefei 230037 China

ISBN: (纸本)9781424484416

In this paper, clutter suppression and target detection in clutter edge is discussed. Firstly the statistical model of the clutter edge is established, based on which maximum likelihood estimation for the transition range bin of the clutter edge is derived. Simulations illustrate that by carefully choosing the secondary samples based on the estimation result of the transition range bin, the signal to inference plus noise ratio (SINR) can be improved significantly. © 2011 IEEE.

关键词： Space time adaptive processing

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The emergence of cooperative leadership from homogenous random networks

The emergence of cooperative leadership from homogenous rand...

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作者： Pan, Liming Rong, Zhihai Wang, Zhijie Li, Xiang Department of Automation Donghua University 201620 Shanghai China Adaptive Networks and Control Lab. Department of Electronic Engineering Fudan University Shanghai 200433 China

ISBN: (纸本)9783902661937

We investigate the game learning skeleton on homogeneous random networks, where an individual plays the Prisoner's Dilemma game with neighbors and the learning frequency during the steady state is counted as edge weight. The learning skeleton is defined as a communication kernel where each individual directs to the most frequently followed neighbor. We show that with the increase of the temptation to defect, the in-degree distribution of the learning skeleton varies from an exponential distribution to a power-law distribution, i.e., the scale-free property can emerge from underlying homogeneous random interaction networks. Moreover, we find that the longer the individual holds on the cooperative strategy, the more followers the individual has, and the easier the leader diffuses its behavior. Therefore, our work will shed some insight into designing reinforcement learning mechanisms in the social system to promote the emergence and persistence of cooperation. © 2011 IFAC.

关键词： Network topology

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Effectiveness research of deep brain stimulation operation for patients with Parkinson's disease based on polar coordination system with varied origin

Effectiveness research of deep brain stimulation operation f...

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2011 4th International Conference on Biomedical engineering and Informatics, BMEI 2011

作者： Wang, Min Wang, Bei Zou, Junzhong Zhang, Jian Nakamura, Masatoshi Department of Automation School of Information Science and Engineering East China University of Science and Technology Shanghai 200237 China Department of Advanced System Control Engineering Saga University Saga 840-8502 Japan

ISBN: (纸本)9781424493524

Parkinson's disease (PD) is a common disease of central nervous system among the elderly, and its complex symptoms bring up some difficulties for the clinical diagnosis. And Deep Brain Stimulation (DBS) is an effective treatment method for patients with Parkinson's disease. In this study, a method based on polar coordination system with varied origin was proposed to quantitatively evaluate the availability of DBS operation for patients with Parkinson's disease. Totally, seven patients with Parkinson's disease were participated in the spiral drawing experiment and their scores under Unified Parkinson's disease Rating Scale (UPDRS) were also recorded. According to the characteristics of hand movement in spiral drawing, a set of parameters were defined and calculated before and after DBS operation. Compared with the UPDRS scores, experimental results showed that this method of evaluation was consistent with the clinical diagnosis. The proposed method based on polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment. © 2011 IEEE.

关键词： Coordination reactions

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Quantitative evaluation of hand movement in spiral drawing for patients with Parkinson's disease based on modeling in polar coordinate system with varied origin

Quantitative evaluation of hand movement in spiral drawing f...

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IEEE/Institute of Complex Medical engineering International Conference on Complex Medical engineering

ISBN: (纸本)9781424493241

Parkinson's disease is one of the most common neurodegenerative disorders, and its complex symptoms bring some difficulties for the clinical diagnosis. In this study, a method based on mathematical modeling of hand movement in spiral drawing was proposed to quantitatively evaluate the performance of patients with Parkinson's disease. Unlike the previous works, the hand movement data in spiral drawing were analyzed and modeled under the polar coordinate system with varied origin. Experimental results gained from the model showed that this method of evaluation was consistent with the clinical diagnosis before and after deep brain stimulation operation. The proposed method based on mathematical modeling in polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment. © 2011 IEEE.

关键词： Diagnosis

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