{"title":"Associated IDTs in surface acoustic wave devices for closed-loop control inkjet system","authors":"H. B. Thu, P. Sarro, T. B. Duc, T. C. Duc","doi":"10.1109/ICSENS.2014.6985410","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985410","url":null,"abstract":"This paper presents a novel associated interdigital transducers (A-IDTs) on Y-Z Lithium Niobate (LiNbO3) for detecting ink pressure at the nozzle during droplet generation. The device is composed of transmitter IDTs with arcs (Da = 1000) of concentric circles and conventional receiver IDTs with straight fingers. The nozzle orifice is etched through the wafer and is perpendicular to the surface acoustic wave (SAW) propagation path. Compared to conventional focused SAW devices, the proposed SAW device, which includes spectral content of the mechanical waves, output magnitude and attenuation per acoustic length unit due to the effect of flow rate at the nozzle orifice, is more effective. The advantages of the A-IDT structure include focused properties due to the input focused fingers and IDT fabrication simplification. Electrical and mechanical characteristic analysis is presented to determine the relation between ink pressure and output potential. The ink droplet is separated after the second pitch appearance of the output signal in the frequency-time domain.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"17 1","pages":"1936-1939"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72736754","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}
L. Navarrete, F. Toldra-Reig, J. M. Serra, S. Somacescu
{"title":"SnO2 and Ce modified SnO2 mesostructured for selective ethanol detection","authors":"L. Navarrete, F. Toldra-Reig, J. M. Serra, S. Somacescu","doi":"10.1109/ICSENS.2014.6984992","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6984992","url":null,"abstract":"SnO2 and Ce modified SnO2 mesoarchitectured have been prepared using an ionic surfactant (CTAB) as template for sensing applications. The procedure involves a versatile route based on hydrothermal treatment under autogenous pressure for obtaining mesoarchitectures built from nanoparticles. The structural, textural and morphological features of the resultant powders were investigated by scanning electron microscopy (SEM), while the surface chemistry was closely monitored by X-ray photoelectron spectroscopy (XPS). H2, CO and C2H6O responses are studied.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"11 1","pages":"297-300"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72779051","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":"Magnetically coupled resonators for rate integrating gyroscopes","authors":"P. Pai, H. Pourzand, M. Tabib-Azar","doi":"10.1109/ICSENS.2014.6985217","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985217","url":null,"abstract":"This work demonstrates for the first time the use of magnetic field to couple mechanical resonators that can be separated by long distances (8mm in this work) compared to coulombic/electrostatic coupling (~ 1 nm - 1 μm depending on the surface charge density or E-field). The resonators were composed of electroplated copper cantilevers with proof-mass resulting in 1 kHz resonant frequency when uncoupled. The coupling magnetic field was produced by 1 mT rare earth magnets mounted on the resonators. Electrostatic actuation and sensing was used to excite and sense the collective motion of the coupled resonators. The radial motion of the resonators in the presence of an in-plane rotation gives rise to the Coriolis force. Thus, the rotation changes the rate of energy exchange between the coupled resonators enabling rate integrating gyros.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"67 1","pages":"1173-1176"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73999265","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}
Yuxin Yan, Z. Zeng, Chao Chen, Hui Jiang, Z. Chang, D. Karabacak, M. Pertijs
{"title":"An energy-efficient reconfigurable readout circuit for resonant sensors based on ring-down measurement","authors":"Yuxin Yan, Z. Zeng, Chao Chen, Hui Jiang, Z. Chang, D. Karabacak, M. Pertijs","doi":"10.1109/ICSENS.2014.6984973","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6984973","url":null,"abstract":"This paper presents a novel readout circuit for micro-mechanical resonant sensors. To determine the sensor's resonance frequency and quality factor, the sensor is briefly excited, after which the exponentially-decaying ring-down current produced by a piezoelectric transducer is read out by an auto-zeroed trans-impedance amplifier (TIA). An auto-zeroed comparator then detects zero- and level-crossings for frequency counting and quality factor measurement. A new circuit topology is proposed to reduce errors due to leakage currents. Moreover, a reconfigurable TIA enhances the circuit's flexibility. A prototype chip has been implemented in a 0.35 μm CMOS process. Experimental results obtained using a silicon-nitride clamped-clamped beam resonator are in good agreement with results obtained using conventional impedance analysis. In a measurement time of 2 ms, the circuit achieves a 50 ppm detection limit in resonance frequency, 5 times better than prior work, while consuming only 31.5 μA from a 3.3 V supply.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"14 1","pages":"221-224"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79238087","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 fast tunable semiconductor laser for FBG sensor interrogation systems","authors":"J. Mo, Logan He, Chao Lu","doi":"10.1109/ICSENS.2014.6985261","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985261","url":null,"abstract":"We demonstrate a fast Quasi-Continuous frequency scanning semiconductor laser source for optical fiber sensor interrogation systems. The tunable laser covers a wavelength range of 32nm in C-band with tuning resolution of 8pm. The scanning time over the complete wavelength range in C band is less than 1ms while the switching time from one wavelength point to another point can be less than 100ns. A fast current driver controlled using FPGAs have been employed to drive a DSDBR laser for the realization of the fast tunable laser module. Experimental results have verified its possible application in optical sensor interrogation systems.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"48 1","pages":"1348-1351"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84257744","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}
D. Duraibabu, S. Poeggel, E. Omerdic, Kyricaos Kalli, Romano Capocci, A. Lacraz, G. Dooly, E. Lewis, T. Newe, G. Leen, D. Toal
{"title":"Novel miniature pressure and temperature optical fibre sensor based on an extrinsic Fabry-Perot Interferometer (EFPI) and Fibre Bragg Gratings (FBG) for the Ocean environment","authors":"D. Duraibabu, S. Poeggel, E. Omerdic, Kyricaos Kalli, Romano Capocci, A. Lacraz, G. Dooly, E. Lewis, T. Newe, G. Leen, D. Toal","doi":"10.1109/ICSENS.2014.6985017","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985017","url":null,"abstract":"A novel miniature sensor is proposed for accurate measurement of pressure (depth) and temperature changes in the ocean environment. The sensor is based on an optical fibre extrinsic Fabry Perot interferometer (EFPI) combined with a Fibre Bragg Grating (FBG). The EFPI provides pressure measurements while the Fibre Bragg Grating (FBG) provides temperature measurements. The FGB is post-inscribed into the EFPI using a femtosecond laser. The sensor is mechanically robust, corrosion resistant and suitable for use underwater. The combined pressure and temperature sensor system was mounted on-board a mini remotely operated underwater vehicle (ROV) in order to monitor the pressure changes at varying depths and compare with the reference pressure-depth sensor. The reflected optical spectrum of the sensor was monitored online and a pressure change caused a corresponding observable shift in the optical spectrum. The sensor exhibited excellent stability when measured over a 2 hour period underwater and its performance is compared with a commercially available reference sensor also mounted on the ROV. The comparison illustrates that the EFPI/FBG sensor is more accurate (~0.025m) with a resolution of ~0.005m, when compared to the reference sensor.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"190 1","pages":"394-397"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79524386","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":"Monitoring of disease-related volatile organic compounds in simulated room air","authors":"T. Itoh, T. Akamatsu, N. Izu, W. Shin, H. Byun","doi":"10.1109/ICSENS.2014.6985281","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985281","url":null,"abstract":"We have investigated the reduction in the influence of room air contamination on the monitoring of lung cancer-related volatile organic compounds (VOCs), namely, nonanal, n-decane, and acetoin, and sugar diabetes-related VOCs, namely, acetone and methyl i-butyl ketone. We have used a gas comprising a mixture of 300 μg/m3 of 31 kinds of VOCs as this has been proposed to resemble an indoor air-like gas. We have used six sensors comprising four commercially available sensors (TGS 2600, 2610, 2610, and 2620) and two Pt, Pd, and Au-loaded SnO2 sensors (Pt, Pd, Au/SnO2) to monitor the gases for detecting lung cancer-related VOCs and sugar diabetes-related VOCs. We analyzed sensor signals using principal component analysis. When a total of six sensors (TGS and Pt, Pd, Au/SnO2 sensors) was used, we could successfully discriminate between lung cancer- and sugar diabetes-related VOCs. The sensor that has small value for the difference in sensor response, which is the difference in sensor response between 1 ppm of target gases in pure air and those in simulated room air, should be selected from the array of six sensors for a more improved discrimination accuracy under simulated room air conditions.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"13 1","pages":"1427-1430"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79646121","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 multisensor data fusion approach for the volcanic ash granulometry classification","authors":"B. Andò, S. Baglio, V. Marletta","doi":"10.1109/ICSENS.2014.6985438","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985438","url":null,"abstract":"In this paper a methodology to be adopted for volcanic ash average granulometry estimation is presented. The main idea is to count the number of ash particles in a known volume. To this purpose a piezoelectric transducer was used to convert ash particles impacts into electrical signals, which provide information about the number of ash particles. Moroever, a couple of infrared (IR) diode-phototransistors allows for the monitoring of the ash level in the instrumented tank. Information from this sensor should be used in a multisensor data fusion approach with information on the ash granulometry gained by the methodology proposed by authors in a previous work. Experimental results showing the suitability of the proposed approach are presented.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"6 1","pages":"2050-2053"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79646644","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":"The use of a cosmic ray probe as a proxy of green vegetation biomass","authors":"Daniel V. Smith, R. Dutta, Cecil Li","doi":"10.1109/ICSENS.2014.6985425","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985425","url":null,"abstract":"A preliminary study is undertaken to determine whether the fast neutron counts of a cosmic ray probe can be used as proxy estimate of green biomass over its 40 hectare measurement area. The study was conducted using the Normalized Difference Vegetation Index (NDVI) product from NASA MODIS satellite imagery and pressure corrected fast neutron counts of a cosmic ray probe located at Tullochgorum in north-eastern Tasmania between October 2010 and December 2013. Machine learning based regression models, namely, Support Vector Regression (SVR), Generalized Linear Model (GLM), Regression Decision Tree, Multi Layer Perceptron (MLP) network and Radial Basis Function (RBF) network were employed to estimate the NDVI from the dependent variable of fast neutron counts across a range of input configurations. Results from this study showed the relationship between wet soil and increased vegetation density and greenness could be used to provide some form of proxy estimate of green biomass at a weekly time resolution. The model with the highest accuracy was an MLP network (Pearson's correlation coefficient of 0.86) with inputs composed of the previous 12 weeks of averaged fast neutron counts.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"300 1","pages":"1996-1999"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79698437","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":"An inline insertion microwave MEMS power sensor based on GaAs MMIC technology with ultra reflection losses","authors":"Zhiqiang Zhang, X. Liao","doi":"10.1109/ICSENS.2014.6985290","DOIUrl":"https://doi.org/10.1109/ICSENS.2014.6985290","url":null,"abstract":"This paper proposes an inline insertion microwave microelectromechanical systems (MEMS) power sensor based on measuring the power dissipated by intrinsic ohmic losses of a coplanar waveguide (CPW) signal line by thermopiles. In order to achieve ultra reflection losses, cold junctions of the thermopiles are covered with the CPW ground lines for depressing electromagnetic coupling effects and serving as hot sink. To increase the sensitivity, the CPW ground lines are suspended above hot junctions of the thermopiles for reducing thermal losses and the CPW dimension near the thermopiles is designed to increase the temperature of the hot junctions. This sensor is completely compatible with the GaAs monolithic microwave integrated circuits (MMIC) technology. Experiments show that this optimized power sensor has resulted in reflection losses of less than -24.3 dB up to 26 GHz, with insertion losses of less than 0.37 dB. For the input power of 0.5-300 mW, the good linearity of the output response is obtained and average sensitivities are more than 6.26 and 8.21 mV/W at 2 and 20 GHz, respectively.","PeriodicalId":13244,"journal":{"name":"IEEE SENSORS 2014 Proceedings","volume":"32 1","pages":"1463-1466"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85174593","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}