The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011最新文献
{"title":"A highly linear CMOS temperature sensor","authors":"C. Lin, Sheng-Feng Lin","doi":"10.1109/ECTICON.2011.5947774","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947774","url":null,"abstract":"In this work, we proposed a linear CMOS temperature-to-current converter as a temperature sensor, which especially benefit on enhancing the accuracy of thermal monitoring. The proposed design achieves highly linear relationship between temperature and current by annulling the most critical nonlinear square terms of it. Through utilizing a compensation scheme among two current sources driven in saturation region with different bias voltages, the nonlinear effect originated from the temperature dependence of both mobility degradation and threshold voltage drift is cancelled. The experiment results demonstrate competitive performance. The maximum temperature error and average power consumption of temperature sensor are merely ±0.022°C and 137.6µW respectively while the die area is about 27.1µm*18.3µm under the implementation of TSMC 0.35µm CMOS process with 3.3V power supply.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134524050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Selective image smoothing and feature enhancement using modified shock filters","authors":"A. Bini, M. S. Bhat","doi":"10.1109/ECTICON.2011.5948009","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5948009","url":null,"abstract":"Shock filters are widely used for image enhancement and deblurring. These filters make use of nonlinear hyperbolic Partial Differential Equations (PDEs) in order to sharpen the edges. However, in many practical cases images are corrupted by noise and other kind of degradations. Convensional shock filters are not suitable in such cases as they enhance the noise present in the image. Hence, the idea of combining shock filters with diffusion yield good results. In this paper we propose a modified “diffusion coupled shock filter.” The proposed method makes use of an ‘adaptive diffusion term’ which limits the extent of smoothing on important edges making them more sharper. The experimental results demonstrate the efficiency of the proposed method to control diffusion and to make the reconstruction more reliable.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133376461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reliability and economic analysis of a stand-alone PV system to electrify three Islands in Taiwan","authors":"J. Ling, A. Khuong","doi":"10.1109/ECTICON.2011.5947961","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947961","url":null,"abstract":"Photovoltaic-battery system is a sustainable option for isolated electrical power generation at locations receiving abundant sunshine. This paper presents an optimization method for calculating the optimal capacity planning of stand-alone photovoltaic (SPV) system installed at three Islands of Taiwan with high reliability and minimum cost. The Genetic Algorithm (GA) for investigating the optimal capacity planning of SPV system was conducted. The total cost of the initial cost, installed cost, replacement cost, operation and maintenance cost was used to define the objective function. The capacity allocation problem based on GA is to find global optimal solution within a satisfied computational time. Different degrees of the system reliability are investigated to achieve the long-term planning requirement.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"405 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124318012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study of maximum power conversion of a switched-reluctance generator","authors":"P. Kerdtuad, S. Kittiratsatcha","doi":"10.1109/ECTICON.2011.5947919","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947919","url":null,"abstract":"This paper presents the study of maximum power conversion of a Switched Reluctance Generator (SRG). The SRG is operated in single pulse mode where the rotor speed is above base speed. The turn-on and turn-off angle are varied to study the shape of the phase current which is directly related to the power conversion. A 4 Phase, 2kW, 8/6 SRG is used to collect the experimental results. The converter is the conventional 2-switched per phase and a TMS320F2812 Digital Signal Processing (DSP) is a main controller.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129079141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of multivariable series LSQ and differential equation based techniques for fault location on transmission lines","authors":"P. Bedekar, S. Bhide","doi":"10.1109/ECTICON.2011.5947937","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947937","url":null,"abstract":"This paper presents the comparison of differential equation (DE) based algorithm and multi-variable series least squares (MVS-LSQ) based algorithm used for location of fault on transmission lines. A single pi section model of transmission line has been used to generate the samples of voltage and current at relay location. These samples have been utilized in the said algorithms to locate the fault i.e. to find the resistance (R) and inductance (L) between relay location and fault point. Samples of voltage and current were obtained using simulation in PSCAD. Programs have been developed in MATLAB, for obtaining the value of R and L using DE based algorithm and MVS-LSQ based algorithm.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132113107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A novel two-step TOA estimation for transmitted-reference receiver in UWB systems","authors":"Patcharanee Sangbumrung, Wilaiporn Lee","doi":"10.1109/ECTICON.2011.5947854","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947854","url":null,"abstract":"In this paper, we proposed a novel two-step type on time of arrival (TOA) estimation for transmitted-reference (TR) transceiver for impulse radio Ultra-wideband (IR-UWB) systems. Two-step method includes two parts: initial signal acquisition (ISA) and finite timing estimation (FTE). We propose the threshold selection method at ISA section. This method give the short time and can be applied in TR transceiver technique. At FTE part, we use the maximum energy selection (MES) for finding TOA estimation value. The simulation results show that the proposed method out-performs than the conventional technique when we use TR transceiver.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"875 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133728889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust digital control for boost DC-DC converter","authors":"Y. Ohta, K. Higuchi, T. Kajikawa","doi":"10.1109/ECTICON.2011.5947891","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947891","url":null,"abstract":"If the duty ratio, load resistance and input voltage in boost DC-DC converter are changed, the dynamic characteristics is varied greatly, that is, boost DC-DC converter has non-linear characteristics. In many applications of DC-DC converters, the load cannot be specified in advance, and it will be changed suddenly from no load to full load. In the boost DC-DC converter system used a conventional single controller cannot be adapted to change dynamics and it occurs large output voltage variation. In this paper, the robust digital controller for suppress the change of step response characteristics and variation of output voltage in the load sudden changes is proposed. Experimental studies using micro-processor for controller demonstrate that this type of digital controller is effective to suppress variations.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131825674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Phatiwuttipat, Waree Kongprawechon, K. Tungpimolrut, Sumeth Yuenyong
{"title":"Cardiac auscultation analysis system with Neural Network and SVM technique","authors":"P. Phatiwuttipat, Waree Kongprawechon, K. Tungpimolrut, Sumeth Yuenyong","doi":"10.1109/ECTICON.2011.5948018","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5948018","url":null,"abstract":"The system of this study is aimed to support doctors with an analyzed Cardiac auscultation. Extract the information from the heart sound signal obtained from stethoscope mobbed on the robot arm control is used in the further signal processing. Due to time consuming and accuracy, Support Vector Machine is introduced to replace Neural Network for better performance.With the proposed technique, the high classification performances were achieved 96.4% accuaracy for classifying normal and abnormal heart sound while shortening the training time almost 300%. As the result, multi-classifier was introduced for advance development. This paper shows the comparison work between Neural Network and Support Vector Machine.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132147563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Passaranon, S. Wongsa, D. Koolpiruck, A. Khantachawana
{"title":"Online fatigue detection of a SMA-based control valve using CUSUM algorithm","authors":"P. Passaranon, S. Wongsa, D. Koolpiruck, A. Khantachawana","doi":"10.1109/ECTICON.2011.5947895","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947895","url":null,"abstract":"This paper describes a functional fatigue detection system for nonlinear SMA-based control valve. Any drift from the normal behavior of the valve is revealed using a model-based residual generator by means of a nonlinear auto-regressive with eXogenous input (NARX) model. Based on the optimisation property of cumulative sum (CUSUM), an online system for detecting changes in statistical properties of residuals due to fatigue of the valve is developed. The experimental results suggest that the variance of one step ahead (OSA) error and model predicted error (MPE) is a good indicator of fatigue states of the valve.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132697056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeera Gosalvitr, C. Mahatthanajatuphat, P. Akkaraekthalin, S. Chaimool
{"title":"CPW-fed slot antenna with fractal tuning stub for wideband circular polarization","authors":"Jeera Gosalvitr, C. Mahatthanajatuphat, P. Akkaraekthalin, S. Chaimool","doi":"10.1109/ECTICON.2011.5947810","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947810","url":null,"abstract":"Based on the use of the fractal tuning stub and slot radiator, a wideband circularly polarized coplanar waveguide (CPW)-fed slot antenna with fractal tuning stub is presented. The fractal tuning stub has been designed to enhance widely the impedance bandwidth. Moreover, in order to achieve the extended axial ratio bandwidth, the slot radiator is etched and verified on the upper slot. The proposed antenna attains an overlapped bandwidth (axial ration ≤ 3 dB and return loss ≤ 10 dB) of 45% (2.25–3.57 GHz) in measurement.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"635 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132937262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}