{"title":"Least mean square method for LVDT signals processing","authors":"A. Flammini, D. Marioli, E. Sisinni, A. Taroni","doi":"10.1109/IMTC.2004.1351234","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351234","url":null,"abstract":"This paper describes an innovative approach for position, velocity and acceleration estimation using traditional inductive sensors such as LVDTs. These transducers have been considered thanks to their diffusions and performances; however, the same algorithm can be applied to any other kind of AC-excited sensor. It overcomes typical limits of traditional processing techniques, such as coherent demodulation or spectral analysis, implementing a least mean squares estimation of interesting variables. Some preliminary simulations have been conducted to evaluate algorithm functionalities. A working prototype, designed around a low-cost DSP from TI, has been realized to perform real world tests.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130383653","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":"Measurement of complex impedance at high AC voltages using waveforms","authors":"J. Obrzut, K. Kano","doi":"10.1109/IMTC.2004.1351479","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351479","url":null,"abstract":"We present the application of a waveform technique in determining the complex impedance of dielectric composite films at high AC voltages using a DAQ card and virtual instrumentation. Impedance characterization near dielectric breakdown conditions was performed for composites with enhanced dielectric properties. Dielectric hybrid materials made of organic resins and high dielectric constant modifiers under high AC voltages demonstrated fundamentally different behavior than the conventional fiber-glass reinforced epoxy resin laminates.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115390033","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":"Impacts on the accuracy of a capacitive inclination sensor","authors":"T. Bretterklieber, H. Zangl, G. Brasseur","doi":"10.1109/IMTC.2004.1351556","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351556","url":null,"abstract":"The measurement of inclination by evaluating changes of coupling capacitances caused by movements of a fluid in a circular tube is a well known approach. Based on a fluidic inclinometer with an accuracy of better 0.2/spl deg/ over full circle measurement range without calibration, the effects of axis tilt and fill level variation are studied. It is shown that changes of physical properties of the fluid over industrial and automotive temperature ranges, inaccurate fill level and sensor axis tilt are compensated by the evaluation algorithm whereas a tilt between sensor axis and system axis leads to a systematic difference between inclination measured by the sensor and true rotation around the system axis. This effect which is common to all inclination sensors can either be compensated by in-system calibration or corrected if the misalignment is known or avoided by precise alignment of the axis.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117177826","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":"Optimisation of a static nonlinear compensator for bilinear systems","authors":"M.F.L. Foo, A. H. Tan, T. Yap","doi":"10.1109/IMTC.2004.1351524","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351524","url":null,"abstract":"A static nonlinear compensator is proposed to reduce the effects of nonlinear distortion in bilinear systems. Optimisation of the compensator using a maximum length ternary signal is discussed. Since the signal contains only odd harmonic components, the optimisation is reduced to a minimisation of the ratio of the even to odd order components at the system output. The performance of the compensator is evaluated for both first order and second order bilinear systems. A significant reduction of nonlinear distortion is obtained using the compensator. It is also shown that the tuning of the proposed compensator is robust in the presence of noise.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117275548","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":"Automatic enhancement of noisy images using evaluation of image quality","authors":"F. Russo","doi":"10.1109/IMTC.2004.1351126","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351126","url":null,"abstract":"A new method for automatic enhancement of noisy images is presented. In the proposed approach the smoothing and sharpening effects provided by nonlinear functions are controlled by resorting to a measure of image quality that takes into account the histograms of the edge gradients. Thus, a well balanced compromise between smoothing and sharpening can automatically be found and applied to the image data. Experimental results show that the performance of the automatic enhancement system is very satisfactory.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116078769","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":"System design that minimizes both missed detections and false alarms: a case study in arc fault detection","authors":"K. Fowler, H. B. Land","doi":"10.1109/IMTC.2004.1351531","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351531","url":null,"abstract":"This paper considers several components in the architecture and design of systems to discriminate conditions and fuse the data. It focuses on the problems of missing detections and reducing the possibility of generating false positive alarms. It uses a case study of a protective system that detects arcing faults in power switchboards on board ships. The results in this paper can be used in many systems that must monitor and detect hazardous events both accurately and consistently while minimizing false positive alarms that can cause harmful results. Examples include power plants, hospitals, computer installations, web servers, military sensors that detect enemy vehicles, aircraft engine monitoring, and telecommunications.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"31 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123187752","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":"Adjustable 60Hz noise reduction by a notch filter for ECG signals","authors":"Ying-Wen Bai, Wen-Yang Chu, Chien-Yu Chen, Yi-Ting Lee, Yi-Ching Tsai, Cheng-Hung Tsai","doi":"10.1109/IMTC.2004.1351410","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351410","url":null,"abstract":"After the analog ECG signal is transferred into digital format, the digital filter can be used to suppress the 60 Hz embedded noise. In this paper, we propose the use of finite impulse response filters with a linear phase property to obtain the noise reduction without introducing the phase distortion. In our design, we use the notch filter with a pole/zero canceling method, the comb notch filter with a pole/zero canceling method and the equiripple notch filter with the usage of the Parks-McClellan algorithm. By the comparison of the transition bandwidth (/spl Delta//spl omega/), stopband attenuation gain (Astop) of these filters, we can learn the frequency response of these filters. Furthermore, we use the mean square error (MSE) to estimate the effect of the digital filters in order to reduce the embedded 60 Hz noise. We compute the mean square error with respect to the order, N, of these filters and plot the relationship of MSE and N. In addition, we find the relationship of the CPU time and N, and we also learn that the CPU time is in proportion to the order, N, of the filters. According to the relations among N, MSE and CPU time, we can find that the advantages and disadvantages of the proposed filters and then choose the best filter for the corresponding conditions.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123397559","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. Araújo, Raimundo C. S. Freire, Joao Paulo Fernandes da Silva, A. Oliveira, E. Jaguaribe
{"title":"Breathing flow measurement with constant temperature hot-wire anemometer for forced oscillations technique","authors":"G. Araújo, Raimundo C. S. Freire, Joao Paulo Fernandes da Silva, A. Oliveira, E. Jaguaribe","doi":"10.1109/IMTC.2004.1351149","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351149","url":null,"abstract":"Constant temperature hot wire anemometers are widely used in measuring fluid velocity. In this work it is shown that such system can be used to measure fluid flow in the forced oscillations technique applied to the human respiratory system, in substitution to the pneumotachograph. Experimental results are shown to compare the proposed system with the original one.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125003685","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}
J. del Río, E. Trullols, A. Mànuel, J. Mendez, G. Prados, R. Palomera
{"title":"ELVIS. A new tool for teaching and training","authors":"J. del Río, E. Trullols, A. Mànuel, J. Mendez, G. Prados, R. Palomera","doi":"10.1109/IMTC.2004.1351299","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351299","url":null,"abstract":"ELVIS (educational laboratory virtual instrumentation suite) is a LabVIEW based virtual instrument of National Instruments, a multifunction data acquisition device, a custom-designed bench top workstation and prototyping board. As a virtual tool it has a high potentiality in the education and training of basic electronics and circuit design, to engineering students. ELVIS has full testing, measurement, and data saving capabilities needed for such training. A removable prototype board offers students the ability to build circuits at home, thus using laboratory time more effectively. LabVIEW facilities as a Web, e-tool and VI server allow the configuration of ELVIS in order to be fully accessible remotely.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121848322","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. Baillon, J. Cogan, F. Ferri, G. Franzoni, A. Ghezzi, P. Govoni, P. Negri, M. Paganoni, N. Pastrono, A. Pullia, S. Ragazzi, N. Redaelli, C. Rovelli, R. Salerno, T. T. de Fatis, O. Teller
{"title":"Design and performance of the cooling system for the electromagnetic calorimeter of CMS","authors":"P. Baillon, J. Cogan, F. Ferri, G. Franzoni, A. Ghezzi, P. Govoni, P. Negri, M. Paganoni, N. Pastrono, A. Pullia, S. Ragazzi, N. Redaelli, C. Rovelli, R. Salerno, T. T. de Fatis, O. Teller","doi":"10.1109/IMTC.2004.1351446","DOIUrl":"https://doi.org/10.1109/IMTC.2004.1351446","url":null,"abstract":"For the physics program of the CMS experiment at the LHC to be carried out successfully, excellent electromagnetic calorimetry is required. Given the thermal properties of CMS ECAL, keeping the constant term of the energy resolution below 0.5% needs its temperature to be stabilized at 18/spl deg/C within 0.05/spl deg/C. A prototype module of ECAL with the final cooling system has been tested at CERN to check its integration with the read-out electronics and verify that it complies with the severe thermal requirements. The thermal performance of the cooling system is reported here.","PeriodicalId":386903,"journal":{"name":"Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121869137","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}