K. Ogawa, Shin Suzuki, M. Sonehara, Toshiro Sato, K. Asanuma
{"title":"Optical probe current sensor module using the Kerr effect and its application to IGBT switching current measurements","authors":"K. Ogawa, Shin Suzuki, M. Sonehara, Toshiro Sato, K. Asanuma","doi":"10.1109/ICSENST.2011.6137050","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137050","url":null,"abstract":"An optical probe current sensor module using the Kerr effect has been fabricated and applied to switching current measurements for IGBT used for the DC-DC converter and the DC-AC inverter of EV/HEV. Since the sensor module using the Kerr effect of the single domain exchange-coupled magnetic thin film utilizes magnetization rotation only, the Barkhausen noise due to domain wall pinning can be excluded. The current sensor consists of a Laser-diode, a polarizer, a Fe-Si/Mn-Ir exchange-coupled film, a quarter-wavelength plate, a Glan-Laser polarizer, PIN Photodiodes and a differential amplifier. The optical probe current sensor has a current measurement range of ±60 A and a frequency range of DC - 200 kHz. The switching current of IGBT has been measured by it.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121720870","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}
E. J. Mohamad, O. M. Faizan Marwah, R. A. Rahim, Leow Pei Ling
{"title":"An analysis of sensitivity distribution using two differential excitation potentials in ECT","authors":"E. J. Mohamad, O. M. Faizan Marwah, R. A. Rahim, Leow Pei Ling","doi":"10.1109/ICSENST.2011.6137045","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137045","url":null,"abstract":"The investigation of this work is to analysis the sensitivity distributions using two differential excitation potentials, in order to improve the situation of: (1) non-uniform sensitivity distribution: (2) less sensitivity in the central area and (3) non-linear change in ECT (Electrical Capacitance Tomography) system. Simulation using COMSOL Multiphysics is developed in order to obtain the changes in capacitance inter-electrodes and the permittivity of the dielectric material when two differential excitation potentials were injected. The MATLAB simulation is used to obtain the sensitivity distribution inside the closed pipe from the sensor. Generated phantoms and measured values are presented. Simulation is verified using available experimental data through the existing system, 16- segmented ECT sensor electrodes by PROTOM Research Group UTM, MALAYSIA. By using this technique the linear relationship between the capacitances measured to inter-electrodes and the permittivity dramatically improved and the sensitivity distribution for an opposing electrode pair was increased thus gives the sensitivity distribution in the central area increased. The use of this technique does increase the level of detection signals and the SNR(signal noise to ratio) compared to those achieved using standard single-voltage source method.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130014236","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}
U. Guth, J. Zosel, J. Riedel, N. Tran, M. Berthold, C. Vonau, U. Sasum, P. Shuk, M. Paramasivam, V. Vashook
{"title":"Novel electrode materials for electrochemical sensors","authors":"U. Guth, J. Zosel, J. Riedel, N. Tran, M. Berthold, C. Vonau, U. Sasum, P. Shuk, M. Paramasivam, V. Vashook","doi":"10.1109/ICSENST.2011.6137070","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137070","url":null,"abstract":"Electrode materials are the key components for electrochemical sensors, which can be used for determination of gaseous and dissolved species. The sensitivity as well as the selectivity are mainly influenced by the kind and the structure of sensitive electrode material. In this paper two kinds of materials are described. Screen printed carbon electrodes can be modified by thin layers of conducting polymers like Poly(3,4-ethylendioxythiophene) (PEDOT). By means of differential pulse (DPV) and square wave voltammetry (SWV) it is possible to determine biogene amine like dopamine in liquids of human bodies and explosives in ground water in the μM und ppb level, respectively. Polyaniline (PANI) can be used not only at room temperature but also in high temperature sensors. For the first time we could show that zirconia sensors with Nb<inf>2</inf>O<inf>5</inf> or FeCl<inf>3</inf> and Co(NO<inf>3</inf>)<inf>2</inf> embedded PANI electrodes are suitable for the hydrogen and hydrocarbons sensing in oxygen containing atmospheres at 450 °C. The sensitivities of such electrodes are much higher than those of the usual applied oxide systems like Nb<inf>2</inf>O<inf>5</inf> or La<inf>0.75</inf>Ca<inf>0.25</inf>Mn<inf>0.5</inf>Ni<inf>0.5</inf>O<inf>3−δ</inf>. Due to the availability and compactness of electronic devices electrochemical sensors with modified electrodes can be applied in stationary (potentiometric) and non-stationary (SWV or DPV) mode in field application.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130267399","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":"Quantitative analysis of silver nanoparticle ink using laser-induced breakdown spectroscopy","authors":"S. Ikezawa, M. Wakamatsu, T. Ueda","doi":"10.1109/ICSENST.2011.6136963","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6136963","url":null,"abstract":"This paper describes the quantitative analysis of silver nanoparticle ink using laser-induced breakdown spectroscopy (LIBS). LIBS can be used to obtain information about the density and chemical composition of silver particles, even ultrafine particles. Metal particles have been attracting much attention because of their increased use in new micro-nano technologies. In this work, LIBS was used as a fine metal particle measurement system for nanometallic materials used in printing. This paper reports new developments for quantitative analysis of silver nano particles. Good spectral peak resolutions were obtained when the spectra were recorded at wavelengths of 328 nm and 338 nm.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"524 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116526768","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}
G. Tian, Yunze He, M. Alamin, Hong Zhang, P. Jackson
{"title":"Corrosion characterisation using pulsed eddy current sensor systems","authors":"G. Tian, Yunze He, M. Alamin, Hong Zhang, P. Jackson","doi":"10.1109/ICSENST.2011.6137030","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137030","url":null,"abstract":"Pulsed Eddy Current (PEC) has been applied to characterise atmospheric corrosion on steel samples. Coated and uncoated mild steel (S275) samples with different marine atmospheric corrosion have been supplied by International Paint®. After introduction of pulsed eddy current systems, different measurement on different samples have been undertaken. Experimental results using pulsed eddy current sensor systems and feature extraction on corrosion classification and corrosion progression are reported. In conclusion, PEC testing has potential for corrosion characterisation and monitoring in industrial fields where corrosion is an important problem, e.g. the marine industry.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125261328","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":"Synthesis,characterization of WO3 nanopowder and its gas sensing properties","authors":"S. Nahire, R. Patil, G. Jain","doi":"10.1109/ICSENST.2011.6136985","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6136985","url":null,"abstract":"Nanosized WO3 powders were synthesized from WCl6 using chemical co-precipitation method. The WO3 single crystal with mean particle size 68 nm was observed. Thick film resistors were prepared using screen printing technique for building ultra sensitive and selective gas sensors. The response at different temperature ranging from 100°C to 450°C were studied and presented for various gases. High sensitivity has been obtained towards H2S, revealing the capability of the material to detect concentration as low as 10 ppm, upto the Threshold Limit Value (TLV). The results highlight that the nano-material can be adopted for the development of gas sensors with performances suitable for practical applications.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132294685","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 23ppm/°C readout circuitry improvement for capacitive sensor acquisition platforms","authors":"R. Aragonés, J. Oliver, C. Ferrer","doi":"10.1109/ICSENST.2011.6137059","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137059","url":null,"abstract":"This paper presents a high performance analog front-end for conditioning and acquiring raw sensors signals for a frequency based converter platform, with very low power consumption aim.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130980167","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 sensor-assisted model for estimating the accuracy of learning retention in computer classroom","authors":"Jan-Pan Hwang, Ting-Ting Wu, Fu-Jou Lai, Yueh-Min Huang","doi":"10.1109/ICSENST.2011.6137063","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137063","url":null,"abstract":"Modern lifestyle is closely associated with information technology, and sensor technology is particularly used, especially in learning and education. This study proposed a sensor-assisted learning system using sensor technology, in order to determine the learning retention of learners in the learning process, and further provide assistance or feedback. The identification rule of this system is constructed based on decision tree algorithm ID3 (C4.5). The system determined the learning retention according to the learners' visual attention recognition, sitting position variability, and physiological signals analysis.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"116 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132335378","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}
S. Vunnam, Alekha Andolu, M. Kocanda, M. Haji-Sheikh, D. Ballantine, A. Bose
{"title":"Oxygen detection using nanoporous anodized aluminum oxide sensors","authors":"S. Vunnam, Alekha Andolu, M. Kocanda, M. Haji-Sheikh, D. Ballantine, A. Bose","doi":"10.1109/ICSENST.2011.6136943","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6136943","url":null,"abstract":"The objective of this work has been the analysis of the impedance variation of nanostructured sensors in the presence of several gases at different temperatures. This sensor employs platinum nanowires grown in anodic aluminum oxide to detect the gases. Silicon wafers were oxidized to form silicon dioxide and were sputter deposited with titanium tungstide and aluminum metal. The aluminum film was subsequently anodized to form nonporous anodic aluminum oxide. Platinum metal was filled in these pores by the process of electropolymerization to form encapsulated nanowires. Surface morphology characteristics were determined using atomic force microscopy and scanning electron microscopy. A subsequent metallization process using evaporation deposited gold metal to form electrical contacts. Variations in the electrical response of the sensor in the presence of hydrogen, nitrogen and oxygen at 5°C, 25°C and 40°C are presented in this work.","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115490414","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}
E. Basile, A. Brotzu, F. Felli, C. Lupi, G. Saviano, C. Vendittozzi, M. Caponero
{"title":"New magnetic connector for embedding of optical sensors in composite materials","authors":"E. Basile, A. Brotzu, F. Felli, C. Lupi, G. Saviano, C. Vendittozzi, M. Caponero","doi":"10.1109/ICSENST.2011.6137034","DOIUrl":"https://doi.org/10.1109/ICSENST.2011.6137034","url":null,"abstract":"Since the early '80s we begun to talk about the possibility of inserting the optical fiber within the next generation (composite) materials. At the time the optical fiber was used primarily to signals transportation, for communications, and therefore were used primarily multi-modal fibers, not suitable for use with fiber optical sensors, particularly Fiber Bragg Grating (FBG) sensors. It has been started to develop connectors that would allow the embedding of the fibers themselves, allowing an easier outgoing of the termination pigtails from the material itself, [1–3]. Several patents were developed for this purpose, focusing attention, given the almost complete immunity to magnetic fields of optical fiber, to connectors magnetized to facilitate the operation of plug-in. Over the years we have lost trace of these connectors. Today, given the enormous development perspective that the FBG sensors play in the field of real time structural health monitoring, we are turning our attention to the need for a connector easy, quick and effective to plug, that size does not interfere with the structure to be monitored, easy to make and assemble, in a word, practical, from all points of view. For this reason we have designed a miniaturized magnetic connector that is optimized for connecting the single-mode optical fiber, typically used for FBG sensors, which allows efficient transport of the signal, minimizing losses and allow seamless integration with the material, and the structure to be monitored, in other words, this connecting system has been designed in order to develop a product which solves the problem shown by commercial available connectors during their embedding inside materials‥","PeriodicalId":202062,"journal":{"name":"2011 Fifth International Conference on Sensing Technology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116288996","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}