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Effects of freshwater flooding on the properties of the accelerated thermally aged CSPE

Transactions of the Korean Institute of Electrical Engineers 2014年第3期63卷 367-370页

作者： Kang, Myeong-Gyun Lee, Jung-Hoon Lee, Seung-Hoon Jeon, Jun-Soo Kim, In-Yong Shin, Yong-Deok Dept. of Electrical Engineering Wonkwang University Korea Republic of Expert Group Instrumentation and Electric Control Department Korea Institute of Nuclear Safety Korea Republic of

The accelerated thermal aging of a CSPE were carried out for 0, 80.82, 161.63 days at 100°C, which are equal to 0, 40 and 80 years, respectively. The volume electrical resistivities of the non-accelerated thermally aged CSPE and the accelerated thermally aged CSPE for 40y and 80y were 9.620×10 12˜1.246×1013Ω • cm, 5.066×1012˜7.576×1012Ω • cm and 7.195×1012˜9.208×1012Ω • cm at room temperature, respectively. The dielectric constant of the non-accelerated thermally aged CSPE and the accelerated thermally aged CSPE for 40y and 80y were 3.355.030, 2.996 3.963 and 3.020 ˜4.776 at room temperature, respectively. After seawater and freshwater flooding, the volume electrical resistivity of the CSPE trend slightly upward according to drying day at room temperature. After seawater flooding, the dielectric constant of the accelerated thermally aged CSPE were not measured. After seawater flooding, bright open pores of the accelerated thermally aged CSPE were partly transferred to dark close pores due to salinity. After freshwater flooding, dark close pores of the accelerated thermally aged CSPE were partly transferred to bright open pores because salinity of them is decreased. An insulation property of a cable in NPPs was decreased because of the seawater flooding, and an insulation property of them was recovered through the freshwater flooding. As a result, it is considered that an insulation property of a contaminated cable through Tsunami can be recovered if it is cleaned quickly.

关键词： Floods

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3D motion analysis of national rider athletes by riding types in horse simulator

3D motion analysis of national rider athletes by riding type...

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2013 3rd International Conference on Innovative Computing Technology, INTECH 2013

作者： Lee, Myung-Won Kwak, Keun-Chang Dept. of Control and Instrumentation Engineering Chosun University Gwangju Korea Republic of Dept. of Control Instrumentation and Robot Engineering Chosun University Gwangju Korea Republic of

ISBN: (纸本)9781479900473

This paper presents a three-dimensional (3D) motion analysis, motion database construction, and 3D motion visualization of national rider athletes under horse simulator environments. The 3D motion database captured from national rider athletes are constructed by four riding types such as walking, trotting, cantering, and galloping. Finally we cover the motion analysis and evaluation based on the flexion angle of elbow, knee, and backbone, the y-axis position of hip by each riding type for 3D motion analysis of national rider athletes in horse simulator. © 2013 IEEE.

关键词： Simulators

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Frequency-domain least-squares support vector machines to deal with correlated errors when identifying linear time-varying systems

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IFAC Proceedings Volumes 2014年第3期47卷 10024-10029页

作者： J. Lataire D. Piga R. Tóth Dept. ELEC (Fundamental Electricity and Instrumentation) Vrije Universiteit Brussel Pleinlaan 2 1050 Brussels Belgium Control Systems Group Dept. of Electrical Engineering Eindhoven University of Technology Postbus 513 5600 MB Eindhoven The Netherlands

A Least-Squares Support Vector Machine (LS-SVM) estimator, formulated in the frequency domain is proposed to identify linear time-varying dynamic systems. The LS-SVM aims at learning the structure of the time variation in a data driven way. The frequency domain is chosen for its superior robustness w.r.t. correlated errors for the calibration of the hyper parameters of the model. The time-domain and the frequency-domain implementations are compared on a simulation example to show the effectiveness of the proposed approach. It is demonstrated that the time-domain formulation is mislead during the calibration due to the fact that the noise on the estimation and calibration data sets are correlated. This is not the case for the frequency-domain implementation.

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Respiratory rate, heart rate and continuous measurement of BP using PPG

Respiratory rate, heart rate and continuous measurement of B...

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International Conference on Communications and Signal Processing

作者： Nivedita Daimiwal M. Sundhararajan Revati Shriram Dept. of E&CE in the Sathyabama University Dept. of Instrumentation & Control in Cummins College of Engineering for Women Pune INDIA Lakshmi Narain College of Technology Indore INDIA

Measurement of blood volumetric changes in human body by photoplethysmographic sensors is used in present study. Objective is to measured different parameters that are heart rate, respiratory rate, BP. PPG signal is acquired by PPG sensor, microcontroller and RS 232. The acquired PPG signal is displayed in MATLAB. Frequency domain analysis of PPG signal shows a two peaks first at around 0.25 to 0.35 Hz and second at around 1 to 1.5 Hz. FFT at 1Hz relates to 60 BPM and FFT at 0.25 Hz relates to 15 respiratory cycles per minute. For BP Measurement, the pulse height of PPG is proportional to the difference between the systolic and the diastolic pressure in the arteries. The standard blood pressure monitoring instrument is used to calculate correlation coefficient. The arterial blood pressure is calculated based on these coefficients. PPG signal is used to detect blood pressure pulsations in a finger and achieved an accuracy of (0.8 ± 7) mmHg and (0.9 ± 6) mmHg for systolic and diastolic pressure, respectively. The developed PPG based method can be used as a noninvasive alternative to the conventional occluding-cuff approaches for long-term and continuous monitoring of blood pressure, heart rate and respiratory rate.

关键词： Sensors Biomedical measurement Heart Frequency measurement Clocks Fingers Indexes

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Simultaneous estimation of sea level and underwater vehicle location

Simultaneous estimation of sea level and underwater vehicle ...

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OCEANS - Europe

作者： Nak Yong Ko Sung Woo Noh Hyun Taek Choi Dept. Electronics Engineering Chosun University Gwangju Korea Dept. Control and Instrumentation Eng. Chosun University Gwangju Korea Korea Institute of Ocean Science and Technology

ISBN: (纸本)9781479936472

This paper proposes an UKF (unscented Kalman filter) method for localization and sea level estimation of an underwater vehicle. The method uses the information of both the seabed geometry and dept. of the vehicle from sea surface. Since the sea level fluctuates with time due to tide, wave, and precipitation, dept. of the vehicle and range data to seabed sometimes mislead the location estimation. If sea level is estimated simultaneously, the ambiguity of location estimation will be reduced and the dept. and range data become sufficient for localization of an underwater vehicle.

关键词： Sea level Vehicles Sea measurements Estimation Underwater vehicles Sensors Trajectory

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Comparative analysis of LDR and OPT 101 detectors in reflectance type PPG sensor

Comparative analysis of LDR and OPT 101 detectors in reflect...

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International Conference on Communications and Signal Processing

作者： Nivedita Daimiwal M. Sundhararajan Revati Shriram Dept. of E&CE Sathyabama University Pune INDIA Lakshmi Narain College of Technology Indore INDIA Dept. of Instrumentation & Control Cummins College of Engineering for Women Pune INDIA

Detection of blood volume change in the skin by using Photoplethysmogram (PPG) sensor is based on the principle that hemoglobin in the blood absorbs infrared light than the other tissue. Favorable optical window is around 990 nm range. The reflectance type photoplethysmographic sensor is designed using two different detectors. Objective is to compare the response of PPG sensor by using Light Dependent resistors (LDR) and OPT101 as a detector. Signal is recorded by placing the sensor on a finger tip for wavelength ranging from visible to near IR (400 to 1000 nm) range. It is observed that the PPG signal captured using LDR is around 660 nm wavelength but for the OPT101 response is 500 nm to 1000 nm. That is OPT 101 can be used to capture PPG in visible and infrared region. Brain mapping using optical sensor OPT101 is preferable for the measurement of blood volume and blood flow. For source of 660 nm, LDR or OPT 101 can be used to detect the peripheral pulse. LDR is not suitable for the measurement in infrared range.

关键词： Light emitting diodes Detectors Optical detectors Optical reflection Optical pulses Optimized production technology

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Navigation control for an exploration rover with microwave Doppler sensors (Fabrication of third prototype rover and experiments)

Navigation control for an exploration rover with microwave D...

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International Symposium on Micromechatronics and Human Science (MHS)

作者： Masahiro Isogai Yasuhiko Nawa Toru Iijima Dept. of Electronic Control and Robot Engineering Aichi University of Technology Gamagori JAPAN College of Environmental Technology Muroran Institute of Technology Muroran JAPAN

Microwave Doppler sensors commonly used in automatic-door systems have been used in a rover navigation system. A collimated microwave beam with an angular width of ±3° at a frequency of 24 GHz was emitted from a sensor (A) on a dish antenna 30 cm in diameter. Another sensor (B), which works as a detector, was installed on the rover. The rover was programmed to make a right turn when the microwave signal was above a specified level and to make a left turn when the signal was than that level. In this study, we fabricated the third prototype rover. To confirm the effectiveness of the proposed method, we performed the experiments on the strength distribution of the microwave beam, and on the navigation control with the fabricated rover..

关键词： Sensors Microwave circuits Microwave antennas Navigation Base stations Microwave amplifiers

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Design and evaluation of real-time GNSS attitude determination systems using low cost receivers

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Transactions of the Korean Institute of Electrical Engineers 2014年第9期63卷 1259-1265页

作者： Chae, Jeong Geun Lee, Dong Sun Kang, In-Suk Park, Chansik Dept. of Control and Robot Engineering Research Institute of Computer Information and Communication Chungbuk National University Korea Republic of SAMYUNG ENC Co. Ltd. Korea Republic of

In this paper, the real-time attitude determination based Matlab using low-cost receivers was designed and evaluated. The GNSS attitude determination system was implemented to operation in real-time by TimerCailback in MATLAB. The TTM(Transniission Time Misalignment) of U-blox receiver was confirmed through zero baseline tests and this problem was revised, The computed attitude by the high-cost NovAtel receiver was compared to the computed attitude by the low-cost U-blox receiver. As a result of this, the performance of attitude determination systems by low-cost receiver was confirmed. To determine baseline, LAMBDA and BC-LAMBDA for integer ambiguities search methods were used. To confirm suitable integer ambiguity search method in real-time attitude determination algorithm, determined baselines by two methods were compared, and it was confirmed that BC-LAMBDA is more suitable. As a result of this, the operation of real-time attitude determination system was confirmed using 3 low-cost receivers.

关键词： Costs

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Effective evaluation of tumour region in brain MR images using hybrid segmentation

Effective evaluation of tumour region in brain MR images usi...

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International Conference on Computing for Sustainable Global Development (INDIACom)

作者： Kimmi Verma Shabana Urooj Rituvijay Dept of Instrumentation & Control Engineering Galgotias College of Engineering & Technology Greater Noida India Department of Electronics Banasthali Vidyapith Banasthali India Electrical Engineering Dept. Gautam Buddha University Greater Noida India

The aim of this work is to validate a quantitative technique to extract different attributes from MR images. A method known as hybrid segmentation that combines threshold segmentation, watershed segmentation, edge detection and morphological operators is considered jointly. This combined technique is experimented with MR scanned images of human brains to detect tumour. Exact size and location of tumour is detected using present hybrid segmentation technique.

关键词： Image segmentation Tumors Biomedical imaging Image edge detection Magnetic resonance imaging Maximum likelihood detection Finite impulse response filters

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Face recognition using local features by LPP approach

Face recognition using local features by LPP approach

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International Conference on Circuits, Communication, control and Computing

作者： M. E. Ashalatha Mallikarjun S. Holi Praveen R. Mirajkar Dept. of Biomedical Engineering Bapuji Institute of Engineering & Technology Davanagere Karnataka India Dept. of Electronics & Instrumentation Engineering University B.D.T. College of Engineering Davanagere Karnataka India Microelectronics and Control Systems PES Institute of Technology Bangalore Karnataka India

In the present work, appearance-based face recognition method called the Laplacian face approach is used. The face images are mapped into a face subspace for analysis by using Locality Preserving Projections(LPP). The technique is different from Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) which effectively see only the Euclidean structure of face space. The main goal of LPP is to preserve neighbourhood structure of the data set optimally and hence obtain a face subspace that best detects the essential face manifold structure. The Laplacian faces are the optimal linear approximations to the Eigen functions of the Laplace Beltrami operator on the face manifold. Hence, by using this approach undesired variations because of facial expression, changes in lighting conditions, and pose may be eliminated or reduced. Performance analysis of face recognition is carried out on standard databases using both LPP technique and PCA technique. For comparison purpose, PCA with ANN classifier based on Back Propagation Feed Forward Neural Network is also developed and being used for training the input face images and then testing. LPP approach outperforms PCA with ANN, and provides better face representation and also achieves lower error rate.

关键词： Face Principal component analysis Face recognition Covariance matrices Vectors Manifolds Databases

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