{"title":"Wavelet-based power quantification approaches","authors":"J. Driesen, R. Belmans","doi":"10.1109/IMTC.2002.1006889","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006889","url":null,"abstract":"This paper presents alternative computing methods for power related quantities using wavelet transforms. First of all, two alternatives for classical reactive power quantities based on real wavelet transform are given, having advantages over the methods published in literature for the calculation of reactive power. They are based on the implementation of a time delay in the wavelet domain and an a method splitting the current in an active and reactive component. Secondly, a totally different method is presented using complex wavelet transforms, allowing the formulation of power definitions in the time-frequency domain itself, similar to Fourier-based power definitions, but theoretically yielding continuously varying power quantities. All approaches are illustrated with examples.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129248163","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":"Cycling verify: fault diagnosis for linear analog circuits based on symbolic calculus and interval algebra","authors":"F. Filippetti, M. Artioli","doi":"10.1109/IMTC.2002.1006908","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006908","url":null,"abstract":"This paper is intended to show the possibility of performing fault location and identification in the case of single or double faults in analog circuits with a symbolic algorithm that allows using few observable points. A group of test equations, obtained from the symbolic solution of the circuit, is cyclically solved in turn for each group of parameters under test, leaving the other ones at their rated value. A validation equation, still obtained from the same symbolic solution, has the task of validating the faulty or non-faulty situation for those parameters.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115981168","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. D'Antona, E. Carminati, M. Lazzaroni, R. Ottoboni, C. Svelto
{"title":"AC current measurements via digital processing of Rogowski coils signal","authors":"G. D'Antona, E. Carminati, M. Lazzaroni, R. Ottoboni, C. Svelto","doi":"10.1109/IMTC.2002.1006926","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006926","url":null,"abstract":"The main advantages of Rogowski coils are the high degree of galvanic insulation and low cost compared to shunts and current transformer measuring systems. Its typical application is in the field of high-amplitude and/or high frequency currents. The integration of the EMF induced at the end conductors of the coil is classically obtained by an analog integrator. We propose an original integration process, based on a simple digital signal processing, allowing for better accuracy in the integration procedure and higher stability of the output signal. In addition, the use of digital integration extends the use of Rogowski coils also to low-amplitude and low-frequency current measurements.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116728302","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":"Self-controlled PTC sensor for reliable overfill protection of liquids","authors":"M. Horn, L. Umar, H. Ruser","doi":"10.1109/IMTC.2002.1006877","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006877","url":null,"abstract":"The paper deals with the design of sensors with automatic self-control. A PTC thermistor was selected, which is used as a level sensor to prevent overfill of liquids in tanks. In self-heated mode, the I-U characteristic is basically dependent on the unloading resistance value R/sub T/ of the PTC sensor itself, the thermal resistance R/sub W/ and the temperature T/sub M/ of the medium that is surrounding it. This I-U characteristic of the sensor in thermally steady state in still air is modelled. Problems in detecting the liquid level occur for a soiled sensor surface or liquids with high temperature and/or high viscosity (e.g. crude oil). A solution to this worst-case scenario is to determine R/sub W/ continuously from the I-U characteristic of the PTC thermistor in function. The constant monitoring of the sensor parameters enables an automatic sensor self control, e.g. to identify slow changes of the sensor parameters due to corrosion and dust layers on the sensor surface or ageing.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114146774","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":"Modelling of high power automotive batteries by the use of an automated test system","authors":"B. Schweighofer, K. Raab, G. Brasseur","doi":"10.1109/IMTC.2002.1007217","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1007217","url":null,"abstract":"In order to estimate the field of application for an electrical energy storage, its performance at different operating conditions has to be measured and evaluated. An automated test system has been designed to speed up measurement and to ensure reproducible measurement conditions. The paper focuses on the performance of this test system and on measured data. Based on this data, a battery model of a NiMH cell is parameterized and the obtained results are discussed.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114590056","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":"Integrated CMOS optical microsystem for illuminating source identification","authors":"G. de Graaf, R. Wolffenbuttel","doi":"10.1109/IMTC.2002.1006855","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006855","url":null,"abstract":"An integrated silicon colour sensor system has been designed and fabricated in CMOS. The application is measurement of ambient light conditions e.g. for display control in portable instruments, or for testing the intensity or colour temperature of light sources. The system has bit-stream outputs. Signals proportional to the intensity and the spectral average of the impinging light are available at the output. No extra masks for colour filtering are needed It is demonstrated that daylight can be distinguished from other light sources, such as incandescent lamps and fluorescent lamps.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114599899","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}
I.S.S. Silva, R. Freire, J.F. Silva, J. Naviner, F. Sousa, S. Catunda
{"title":"Architectures of anemometers using the electric equivalence principle","authors":"I.S.S. Silva, R. Freire, J.F. Silva, J. Naviner, F. Sousa, S. Catunda","doi":"10.1109/IMTC.2002.1006874","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006874","url":null,"abstract":"Being an important parameter in the measurement of pulmonary function, the resistance of the respiratory tract is given by the relation between the pressure variation and the airflow variation measured near the patient's mouth. The airflow determination may be accomplished by measuring the velocity of the respiratory stream with the aid of a hot-wire sensor. Due to its small dimensions, this type of sensor does not produce significant increase of mechanical resistance to the patient's respiratory airflow. Furthermore, the sensor will be submitted to less contamination by the substances composing the respiratory fluid. In this paper, we present an evaluation of circuits employing constant temperature hot-wire sensors, in response to both fluid velocity steps and respiratory airflow in patients at rest.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116140829","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":"Computer aided texture alignment of Japanese kimono","authors":"T. Sano, H. Yamamoto","doi":"10.1109/IMTC.2002.1006891","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1006891","url":null,"abstract":"A yukata is a type of traditional Japanese clothing. An alignment of its texture pattern is an important factor of the yukata design. In the traditional design of the yukata, the calculation of the size, texture alignment and the development of the cutting pattern are manually performed. There are traditional rules for the texture alignment. Especially, the texture alignment depends on the experience and intuition of the skilled person. We have developed a CAD system for Japanese kimono. In this paper, we describe methods for automatic texture alignment. At first, image processing algorithms to detect the texture pattern in the kimono cloth are developed. Secondarily, methods of the texture alignment based on the traditional rules are developed. Finally, image processing algorithms for the texture alignment based on the traditional rules are proposed. By using this CAD system, designers can easily tailor the yukata regardless of their skill.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127142169","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":"Neuro-fuzzy network for flavour recognition and classification","authors":"S. Osowski, T. H. Linh, K. Brudzewski","doi":"10.1109/IMTC.2002.1007198","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1007198","url":null,"abstract":"The paper presents the neuro-fuzzy TSK network for the recognition and classification of flavour. The important role in this process fulfills the self-organizing process used for the creation of the inference rules. The self-organizing neurons perform the role of clustering the data into fuzzy groups with different membership values (the preprocessing stage). Applying the automatic control of clusters we have got the optimal size of the TSK network. The developed measuring system has been applied for the recognition of the flavour of different brands of beer. The fuzzy neural network is used for processing the signals obtained from the semiconductor sensor array. The results of numerical experiments have confirmed the excellent performance of such solution.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125563222","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 rangefinding approach by detecting the position and the incident angle of a light-stripe","authors":"K. Ohtani, M. Baba","doi":"10.1109/IMTC.2002.1007195","DOIUrl":"https://doi.org/10.1109/IMTC.2002.1007195","url":null,"abstract":"This paper describes a novel triangulation-based light stripe rangefinding approach which can measure 3-D shapes for both specular and Lambertian objects. Although triangulation-based light stripe rangefinders have been widely used for many industrial applications, generally only Lambertian objects can be measured with these rangefinders. In order to apply this type of rangefinder to specular objects, it is necessary for the image sensor to detect the incident position and the angle of the light stripe However, it is difficult to detect the incident angle of the light stripe using conventional image sensors. Thus, we previously made the indirect detection of the angle possible by limiting the path of the light stripe that passed through the lens with shield masks. While the previous rangefinding approach based on this idea realized 3-D shape measurements for specular objects, it took a long time to acquire the 3-D shape data using this approach. We here devised a sensor which has the capability of detecting the incident angle directly, and then proposed a novel rangefinding approach using this sensor.","PeriodicalId":141111,"journal":{"name":"IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126673226","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}