{"title":"A design automation toolkit for virtual instrumentation","authors":"F.Z. Elorza, C. R. Allen, I.C. Leggett","doi":"10.1109/IMTC.1998.679799","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679799","url":null,"abstract":"This paper describes an electronic design automation (EDA) toolkit for Web page designers to produce a working virtual model of an instrument. The toolkit comprises an instrument workspace in which the instrument operates upon 2D active \"appliances\". The instrument software is encapsulated in a finite state diagram model which may be used hierarchically. The designer is also provided with a resource editor where the physical appearance of the instrument may be customized. The objective is to provide a fast track design route for new instruments to be designed and assessed by clients by providing an animated and graphical simulation accessible via the worldwide web network.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132038878","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":"Spatial localization of sound sources: azimuth and elevation estimation","authors":"Jie Huang, N. Ohnishi, N. Sugie","doi":"10.1109/IMTC.1998.679796","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679796","url":null,"abstract":"A model-based bio-mimetic sound localization method has been proposed for concurrent and continuous speech sources located in reverberant environment. However, the method only provides the estimation of azimuths of sound sources. The current paper is to extend the previous method to be available for sound sources existing in the 3D space by using a four microphone set. As the procedure of signal processing, arrival time differences of different microphone pairs are calculated at each available onset of sound components. The locus circles of different microphone pairs in the surface of Gaussian Sphere are then calculated and projected topographically to a horizontal plane, which consists the north pole, by the south pole projection. A two dimensional histogram in the projected plane corresponding to the source direction is created by summing all the projected maps of every onsets. Finally, the directions of sound sources are determined by the position of the major peaks in the two-dimensional histogram.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132187592","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. Goerlich, D. Bruckner, A. Richter, O. Strama, R. Thoma, U. Trautwein
{"title":"Signal analysis using spectral correlation measurement","authors":"J. Goerlich, D. Bruckner, A. Richter, O. Strama, R. Thoma, U. Trautwein","doi":"10.1109/IMTC.1998.676961","DOIUrl":"https://doi.org/10.1109/IMTC.1998.676961","url":null,"abstract":"The spectral correlation analysis of cyclostationary signals can be considered as a substantial extension of the well known time averaged periodogram spectral analysis since it detects periodically with time varying second order moments. The most general description of cyclostationary signals is based on the Wigner-Ville spectrum (WVS). The periodic structure of the WVS results in discrete slices of its Fourier transform, the bifrequent spectral correlation function that indicates spectral coherence. An efficient estimation procedure for the spectral correlation based on a FFT of a sequence of pseudo Wigner distributions is given including a search efficient procedure for discrete cycle frequency detection. An implementation based on a multi-DSP platform is described as well. The spectral correlation analysis can be preferably applied for signals that are produced by some periodic modification or modulation of stationary random noise. Therefore, many applications for signal analysis in technical fields can be found, especially for modulated signals in communications as well as for noise and vibration signals produced by rotating machines.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132274057","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":"Threshold error reduction in linear measurement devices by adding noise signal","authors":"B. Andò, S. Baglio, S. Graziani, N. Pitrone","doi":"10.1109/IMTC.1998.679651","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679651","url":null,"abstract":"The threshold error in electro-optical devices represents a serious problem in many applications and should be kept as low as possible for optimal system performance. In the past the authors have investigated the possibility of improving the performances of bistable systems by using Stochastic Resonance (SR) theory. In particular, the possibility of extending the threshold error reduction approach from bistable systems to a wider class of systems has been investigated for a significant improvement of the performances of several measurement devices such as optical sensors, environmental sensors, and proximity sensors. In this paper the reduction of threshold error in an optical transducer is taken into account. A methodology based on noise modulation of the input signal is presented. Experimental results are reported in order to emphasise the suitability of the proposed methodology.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"389 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133120127","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 VXI-based measurement apparatus in high efficiency variable speed drives dynamical characterization","authors":"C. De Capua, C. Landi","doi":"10.1109/IMTC.1998.679817","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679817","url":null,"abstract":"In order to characterize a drive tests are carried out under static and dynamic working conditions. The static tests verify the system performances in a pre-set number of working points in the speed regulation range and at the rated supply conditions provided for the specifications The dynamic tests verify the drive performances and operation continuity during electrical transients on the power supply network and the mechanical transients. In this paper, the authors accomplish a description of the implemented VXI-based measurement station for digital efficiency measurements on high and low power electrical drives. Then, the most significant quantifies for VSD performance evaluation are discussed and test procedures for VSD dynamic characterization are illustrated.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133266422","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":"Pollution dynamic monitoring system for city air quality control","authors":"A. Boscolo, C. Mangiavacchi","doi":"10.1109/IMTC.1998.679757","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679757","url":null,"abstract":"The paper describes the development activity of a mobile instrumentation devoted to city air quality monitoring. In particular the methods adopted for collecting and analysing the air samples, the preliminary processing of the raw data coming from a solid state sensors array and the developed dynamic on field calibration procedure are discussed and the preliminary results obtained also are reported.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"9 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044225","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":"Analog signal pre-processing for performance enhancement of a distance meter based on frequency-modulated continuous-wave interferometry","authors":"L. Rovati, U. Minoni","doi":"10.1109/IMTC.1998.676902","DOIUrl":"https://doi.org/10.1109/IMTC.1998.676902","url":null,"abstract":"A method for the processing of signal from an absolute distance meter based on a frequency-modulated continuous-wave (FMCW) interferometer is presented. FMCW is implemented using a laser diode driven by a current waveform obtained as the superposition of a triangular signal to a bias current kept well above the diode lasing threshold. The analog signal pre-processing includes a derivative block followed by the time-variant baseline restoration of the photodetector current. A high signal-to-noise ratio is ensured by avoiding the use of a resistive transimpedence preamplifier and subsequent voltage processing. The paper details the scheme of the pre-processing chain as well as the experimental results from an actual prototype of a distance meter.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114226234","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":"Delayless differentiation algorithm and its efficient implementation for motion control applications","authors":"Sami Väliviita, O. Vainio","doi":"10.1109/IMTC.1998.676851","DOIUrl":"https://doi.org/10.1109/IMTC.1998.676851","url":null,"abstract":"Acceleration feedback can improve the performance of motion control in motor drives. Acceleration control is, however, seldom implemented in practical drive systems due to the unsatisfactory results of most acceleration measurement methods. In this paper, we introduce a computationally efficient (Finite Impulse Response) filter-based algorithm which makes it possible to differentiate the polynomial-like velocity signal with optimal white noise attenuation. The proposed signal processing algorithm does not delay the acceleration signal but, instead, the prediction step can be freely adjusted to compensate for various delays in the physical implementation. Our algorithm can be implemented by utilizing recursive structure so that the amount of multiplications and additions required does not depend on the filter length. No additional hardware is required to implement the algorithm because it can be programmed as part of the control software. The performance of the new algorithm is evaluated by applying it to a simulated motion control application.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114429708","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":"Diagnosis of digital/analogue measurement system with application of test bus and distributed diagnostic subsystem","authors":"K. Badzmirowski, M. Gonera, J. Kern","doi":"10.1109/IMTC.1998.679834","DOIUrl":"https://doi.org/10.1109/IMTC.1998.679834","url":null,"abstract":"The article describes a method of diagnosis applied to the digital/analogue distributed measurement systems, based on a diagnostic subsystem with the distributed multilayer structure of hardware and software. The solution described, enables one to join independence of the diagnostic subsystem and possibility of using the diagnosed distributed measurement system resources, both of the equipment (JTAG diagnostic bus) and of the software (e.g. standard software modules working in the WINDOWS environment). To find limitations of IEEE 1149 Test Bus standard for parametric faults monitoring, we measured and presented some characteristics of the Programmable Acquisition Modules, including P1149.4 test chip. The developed Diagnostic Subsystem described herein, thanks to the flexible structure and universality of modules, interfaces and programming software, enables development of the additional virtual aids, adapted to needs of the particular applications.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114986170","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 reduction of metallic archeological finds by a technique of focusing ionic beam in an electrolytic solution","authors":"C. Bartoletti, M. Caciotta","doi":"10.1109/IMTC.1998.676882","DOIUrl":"https://doi.org/10.1109/IMTC.1998.676882","url":null,"abstract":"Restoration of an archeological artifact by an innovative instrument is dealt with. The operational principle consists in reduction current focusing on small regions of the artifact. Phenomena such as \"current pinching\" and interference between the potential of surfaces of items found, are considered and the analysis algorithm of voltage data for surface diagnosis is presented. Both analytical and reduction capabilities of the instrument are discussed.","PeriodicalId":160058,"journal":{"name":"IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128228502","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}