Gabor Vinci, Alessandro Sona
Radio Frequency Identification (RF-ID) is a key technology in today’s logistics and industrial scenarios, used for labelling and tagging items in warehouses and industrial production. In order to avoid unexpected faulty behaviours, some working conditions and setup parameters of RF-ID systems need to be carefully checked. To this aim, both measurements and numerical simulations can advantageously be performed. In this paper, some key working conditions are described and analyzed in terms of coupling between the reader device and RF-ID tags. In particular, the reading range in space of a...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Tommaso Addabbo, Ada Fort, Marco Mugnaini, Santina Rocchi, Valerio Vignoli
In this paper a theoretical approach for studying the effects of parameter perturbations on the chaotic statistics of piecewise linear expanding transformations is summarized, with reference to the chaotic Sawtooth map. On this basis, the authors prove that is possible, both from a theoretical and from an experimental point of view, to obtain almost uniform distributed and uncorrelated analog samples from the Sawtooth map.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Luciano Brunetti, Gian Carlo Bosco, Marco Sellone, Paolo Terzi
INRiM’s primary AC-voltage standard is realized by means of a set of AC-DC Thermal Voltage Converters from DC range up to 1 MHz. Above this frequency, an AC-voltage standard has not been normally implemented because of low technical interest. Indeed, in that range, electromagnetic power, a quantity that is always well definable and measurable also at higher frequencies, becomes more interesting than the AC-voltage. Power standard is realized by means of microcalorimetric technique that, however, lacks in precision under 10 MHz. The result is a metrological gap from 1 MHz to 10 MHz, in which...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
L. Oberto, N. De Leo, M. Fretto, A. Tartari, L. Brunetti, V. Lacquaniti
In this work we present preliminary results concerning the characterization, in terms of noise temperature, of a 94 GHz prototype receiver based on a superconductive SIS mixer developed at INRIM for the MASTER experiment. It is a tryple receiver for the 94, 225 and 345 GHz bands for astrophysical observations based on SIS Josephson junctions. A promising noise figure of 110 K (about 22 times the quantum limit) has been obtained and contribute in fixing an upper bound to the final overall receiver noise temperature that is compliant with the experiment requirements. Moreover it is not far...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Konrad Jędrzejewski
The paper is devoted to the methods of analysis of a new class of “intelligent” pipeline A/D converters (IP ADC). The conversion scheme used in IP ADC is based on the original approach to optimisation of adaptive estimation systems. Its application to the pipeline A/D converters design enables to improve their characteristics but requires changes in their architecture and principles of conversion. The paper focuses on the modelling and analysis of dependence of IP ADC performance on the parameters of their analogue components and conversion algorithm. The models, methods and simulation...
Zbigniew Czaja, Michał Kowalewski
An approach of self-testing of analog parts in mixed-signal embedded systems controlled by microcontrollers is presented. It bases on a dictionary method of detection and localization of single soft faults of passive components in analog electronic circuits. At the Measurement Stage the tested analog part is stimulated by a square impulse generated by the microcontroller, and its response is sampled by microcontroller’s ADC in moments exactly established by an internal timer. Fault detection is made by the two-layer feed-forward perceptron. If the analog part is classified as faulty, the...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Ivan Leniček, Damir Ilić, Alan Šala
In the Primary Electromagnetic Laboratory (PEL), which is a part of the Faculty of Electrical Engineering and Computing of the University of Zagreb and a part of the Croatian metrology system, the unit of resistance (ohm) is maintained by the group of reference and working standards of nominal decade values ranging from 1 mΩ to 100 GΩ. The group of high value resistance standards from 100 MΩ to 100 GΩ is the hindmost incorporated in the resistance traceability chain, and relies on laboratory developed measurement system for high resistance comparison, which is presented in this paper....
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Wojciech Toczek
The paper presents probabilistic model predestined to the evaluation, comparison and optimization of test architectures for fully differential (FD) circuits. The model have the form of analytical formulae that describe the probability density functions of the signal being measured during testing. The first density function is the generalized form of the Rayleigh distribution. It is relevant for representing a fault-free circuit. The second one is the generalized form of the Rician distribution. It is appropriate for modelling magnitude responses of a faulty CUT as well as a fault-free...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Jaroslav Strunc, Stanislav Dado
Studying of rotational components of ground movements belong among emerging approaches in recent geophysics. Rotations can be observed using the dense seismic arrays (microarrays, small aperture arrays) formed from classic three-dimensional seismic sensors. The aim of this project is a construction of portable, high-definition sensor of rotational movement around vertical axis. This sensor is based on measuring of changes of capacitance of differential capacitor.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download
Ana M. R. Franco, E. Tóth, R.M. Debatin, Rodrigo S. Ribeiro e Bruno C. Couto
The paper gives an account on a new power measuring system, based on digital sampling, which was developed by the National Institute of Metrology (INMETRO) of Brazil. The goal of the project was to achieve the highest possible accuracy at the presence of considerable harmonic distortions, to guarantee full traceability to national standards and to minimize the costs of obtaining a high quality reference system. The system facilitates the calibration of commercialized electronic wattmeters, watt-hour meters, as well as the analysis of non-linear loads, resulting harmonic distortions in power...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
· Download