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electronics, computer, Telecommunications and Information technology International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology

作者： Panyakora Sottip Toempong Phetchakul Chana Leepattarapongpan Naritchapan Penpondee Putapon Pengpad Arckom Srihapat Charndet Hruanun Amporn Poyai Department of Electronic Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Thai Microelectronics Center National Electronics and Computer Technology Center

ISBN: (纸本)9781424456062

This paper presents the low power magneto-transistor detect magnetic field density in vertical direction. The devices can detect magnetic field by Lorentz force act upon minority carrier in base and difference between base and collector current (ΔI_ (CB)) was occurred. The structure of the low power magnetotransistor consist of one emitter, one collector and one base contact and designed decrease emitter injection area was 5 μm and growth LOCOS oxide around emitter area. The structure was generated and simulated by TCAD Sentuarus simulation package and shows increase sensitivity of the low power magnetotransistor when compare the three terminals magnetotransistor. From the experiment, the low power magnetotransistor can operate at bias current less than 1 mA and high sensitivity is 20.64 mV/T. The device increase sensitivity 2.53 times at bias current 5 mA and decrease power consumption 85% when compare the three terminals magnetotransistor.

关键词： CMOS technology power Power (Psychology) magnetic field Lorentz force Power three-terminal emitters local oxidation of silicon Power Bias currents Energy sources Alkali Power consumption base contact

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Artificial hand control by myoelectric signals — reduced DFT approach

Artificial hand control by myoelectric signals — reduced DF...

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Przemysław M. Szecówka Anna Spyra Jadwiga Pçdzińska-Rzany Andrzej R. Wołczowski Faculty of Microsystem Electronics and Photonics Wrocław University of Technology Wroclaw Poland Institute of Computer Engineering Wroclaw University of Technology Wroclaw Poland

Smart hand prosthesis control, based on myoelectric signals, strongly depends on signal processing algorithms. This kind of application field forces specific requirements on computational complexity (for dexterity of prosthesis), processing speed (for fast reaction) and size (for portability). The paper presents a concept of reduction of DFT information extracted from EMG signals. Signals are acquisited from 8 channels with 1 kHz sampling frequency. Specialized digital hardware is proposed, capable of parallel processing of series of signals. The design was implemented in VHDL, verified and synthesized for FPGA. In-house developed floating point arithmetic was applied. Satisfying processing speed was obtained for implementation technique that enable embedding in prosthesis.

关键词： Discrete Fourier transforms Electromyography Hardware Artificial neural networks Prosthetics Radiation detectors Field programmable gate arrays

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An analysis of positioning and map-matching issues for GNSS-based road user charging

An analysis of positioning and map-matching issues for GNSS-...

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International Conference on Intelligent Transportation

作者： Rafael Toledo-Moreo Benito Úbeda Jose Santa Miguel A. Zamora-Izquierdo Antonio F. Gómez-Skarmeta Department of Information and Communication Engineering Faculty of Computer Science University of Murcia Murcia Spain Department of Electronics and Computer Technology Technical University Cartagena Spain

The time for new paradigms for pay-per-use road use charging (RUC) has come, and it is still unclear whether or not current Global Navigation Satellite Systems (GNSS) supply reliability enough to lead the technological deployment. It is the general belief for RUC stakeholders that GNSS is the most flexible and cost-efficient technology for such a large deployment. However, the German experience of Toll Collect shows that GNSS must be strongly complemented by road side equipments to reach the necessary charging reliability standards. This paper analyzes some significant points of a GNSS-based RUC schemes, with a special emphasis on relevant map-matching issues. This analysis is complemented by our proposals for supporting GNSS with aiding onboard sensors and maps, and discussions about how the charging reliability may result affected by that. The paper finishes with a summary of the most remarkable conclusions achieved in our investigations.

关键词： Roads Global Navigation Satellite Systems Global Positioning System Vehicles Availability Satellites Sensors

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Improvement of Square Ring Resonator with Lumped Compensation Inductors

Improvement of Square Ring Resonator with Lumped Compensatio...

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electronics, computer, Telecommunications and Information technology International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology

作者： Ravee Phromloungsri Pichai Arunvipas Mitchai Chongcheawchamnan Electronics Engineering Department Faculty of Technology Udonthani Rajabhat University (UDRU) Telecomraunication Engineering Department Mahanakorn University of Technology (MUT) Computer Engineering Department Prince of Songkla University (PSU)

ISBN: (纸本)9781424456062

In this paper, a simultaneous miniaturized and harmonics response suppression of square ring resonator based on inductively compensated microstrip parallel-coupled lines is proposed. The proposed topology with simple design equations is demonstrated with the design operating frequency of 0.9 GHz and less than 3.2 dB insertion losses. More than 26 and 22 dB of spurious suppression performance at the 2nd and 3rd harmonics frequencies are obtained from the experimental results.

关键词： Square Ring Resonator Parallel-coupled lines Inductive compensation and miniaturization technique Spurious suppression

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A novel 180° microstrip phase shifter based on cascaded branch-line couplers for direct QPSK modulation

A novel 180° microstrip phase shifter based on cascaded bra...

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作者： Youngthanisara, Narit Phudpong, Ravipat Rergmaneewan, Teera Booppha, Phaiboon Department of Electronic and Telecommunication Faculty of Engineering Kasem Bundit University 1761 Pattanakarn Rd. Suanluang Bangkok Thailand National Electronics and Computer Technology Center 112 Thailand Science Park Phahonyothin Rd. Pathumthani Thailand

ISBN: (纸本)9784902339222

This paper presents a design and construction of a microstrip QPSK modulator using a novel 180° phase shifter. This phase shifter consists of two cascaded branch-line couplers, thus having two input ports. By feeding an RF carrier to different input ports controlled by digital bits, 0 and 1, the phase of the RF carrier is shifted by 180°. The microstrip prototype of this modulator yields a good result. The insertion loss is lower than 11.7 dB. The phase and magnitude error is lower than 0.4 and 1.49% respectively. The image ratio is lower than 31 dBc and the carrier leakage ratio is lower than 21 dBc. The prototype was fabricated onto a hydrocarbon ceramic, RO4350B, with the dimension of 8.6 × 7.8 cm. © 2010 IEICE Institute of electronics Informati.

关键词： Quadrature phase shift keying

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Method and measurement setup for detection of the shape of optical power pulse in active thermography

Method and measurement setup for detection of the shape of o...

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International Workshop on Thermal Investigation of ICs and Systems (THERMINIC)

作者： Zbigniew Suszyński Michał Bednarek Mateusz Kosikowski Faculty of Electronics and Computer Science Koszalin University of Technology Koszalin Poland Faculty of Fire Safety Engineering The Main School of Fire Service Warsaw Poland

The method of measurement of the shape of optical radiation's energy pulse with wide frequency spectrum is described in the paper. The method consists in the measurement of temperature response of thermally thin gray body. Shape of the pulse is determined by differentiation of registered temperature signal. The paper presents thermal-wave model of measurement setup and the results of measurement of optical pulse shape for flash and halogen lamps.

关键词： Temperature measurement Shape Heating Cameras Thermal analysis Optical pulse shaping Frequency measurement

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Dipole localization of eeg and its application to detection of origin of epilepsy

Dipole localization of eeg and its application to detection ...

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Proceedings of the Biannual World Automation Congress

作者： Takahiro Yamanoi Toshimasa Yamazaki Department of Electronics and Information Engineering Faculty of Engineering Hokkai Gakuen University Sapporo Japan Department of Bioscience and Bioinformatics Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Iizuka Japan

The paper introduces a confidential region proposed by T. Yamazaki et al., which is equipped with the equivalent dipole source localization software; SinaPointPro (NEC Corporation). This confidence limit is defined on a direction of the radius. This method enables to detect the origin of the epilepsy. And also the paper treats a series of its applications by the present author. The author and his collaborators have recorded electroencephalograms (EEGs) from subjects viewing four types of Kanji and arrows representing directional meaning. Subjects were asked to read them silently. The equivalent current dipole source localization (ECDL) method has been applied to these event related potentials: averaged EEGs. ECDs were localized to the right and left frontal lobes at latency after 500ms in both cases. Polarities of ERPs were also opposite in the case of opposite directions, and the moments of localized ECDs at these latencies were opposite. Pathways of ECDs in silent reading are almost the same in cases of Kanji and arrow. In these cases, no ECD was localized to the Wernike's area and the angler gyrus those are related to the auditory language area, however, ECDs were localized to the Broca's area that is said to be the language area for speech.

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Novel liquid crystal tunable flat-top optical interleaver

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Progress In Electromagnetics Research B 2010年第19期 263-283页

作者： Alboon, S.A. Abu-Abed, A.S. Lindquist, R.G. Al-Zoubi, H.R. Hijjawi Faculty for Engineering Technology Electronics Engineering Department Yarmouk University Irbid 21163 Jordan Department of Engineering and Physics University of Central Oklahoma Edmond OK 73034 United States Electrical and Computer Engineering Department The University of Alabama in Huntsville Huntsville AL 35899 United States Hijjawi Faculty for Engineering Technology Computer Engineering Department Yarmouk University Irbid 21163 Jordan

In this paper, we propose tunable optical interleaver filters based on the combined Michelson interferometer (MI) and the Gires-Tournois interferometer (GTI) with polarization diversity. The tuning capability is achieved by integrating liquid crystals into the interleaver. In addition to the tunability, it is also shown that the response for this proposed interleaver has a flat-top. Various GTI-MI LC-based interleaver structures are discussed in this paper and their performance, in terms of the flat-top and the pass band ripple, are judged. These structures have the advantages of low operation voltage requirements and design simplicity. A GTI-MI interleaver hasbeen fabricated and tested. The experimental results show that the interleaver has tunable response.

关键词： Michelson interferometers

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esrcTool: A Tool to Estimate the Software Risk and Cost

esrcTool: A Tool to Estimate the Software Risk and Cost

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International Conference on computer Research and Development (ICCRD)

作者： Mohd. Sadiq Abdul Rahman Shabbir Ahmad Mohammad Asim Javed Ahmad Section of Electronics Engineering Faculty of Engineering and Technology University Polytechnic Jamia Millia Islamia University New Delhi India Department of Computer Science and Engineering AL-Falah School of Engineering and Technology Faridabad Haryana India Section of Computer Engineering Faculty of Engineering and Technology University Polytechnic Jamia Millia Islamia University New Delhi India

ISBN: (纸本)9781424469925;9780769540436

Function Point is a well known established method to estimate the size of software projects. There are several areas of the software engineering in which we can use the function point analysis (FPA) like project planning, project construction, software implementation etc. In this paper we have used the function point approach in order to develop the architecture of the esrcTool. This tool is used for two different purposes, firstly, to estimate the risk in the software and secondly to estimate the cost of the software. In the literature of software engineering there are so many models to estimate the risk in the software like Soft Risk Model, SRAM, SRAEM and so on. But in the esrcTool we have used SRAEM i.e. Software Risk Assessment and Estimation Model, because in this model FP is used as an input variable, and on the other hand side, in order to determine the cost of the software we have used the International Software Benchmarking Standards Group Release Report (ISBSG).

关键词： Software tools Costs Software engineering Programming Risk management computer architecture Software metrics Productivity Software systems Software quality

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Connectedness analysis of wireless relay placement with regular string topology by ordinary generating function

Connectedness analysis of wireless relay placement with regu...

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International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology, ECTI-CON

作者： Teerapol Silawan Jatuporn Chinrungrueng Chaodit Aswakul Department of Electrical Engineering Faculty of Engineering Chulalongkom University Bangkok Thailand National Electronics and Computer Technology Center Khong Luang Pathum Thani Thailand

ISBN: (纸本)9781424456062;9789746724913

In a wireless ad hoc network, relays are used for passing the data from a source to a sink when the source is too far to reach the sink due to their transmission-range limitation. To evaluate the reliability of data transmission from source s to sink t, this paper proposes a mathematical analysis to calculate the probability of s-t connectedness when there can be failed relays. By using the technique of ordinary generating function, a closed-form solution has been obtained for wireless ad hoc networks with a regular string topology. Based on the obtained formula, numerical examples have been given and a network design paradox has been highlighted. Specifically, increasing the number of relays inappropriately in the wireless ad hoc network with regular string topology may even reduce the probability of s-t connectedness. Careful determination of regular relay placement, where the formula derived herein is applicable, can thus be of most useful in practice.

关键词： Relays Mobile ad hoc networks Network topology Data communication Communication system traffic control Chaos Mathematical analysis Probability Closed-form solution Roads

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