G. Betta, S. Esposito, M. Laracca, M. Pansini
In the last years there were widespread uses and applications of humidity sensors in many different fields. In response to this situation, various kinds of humidity sensors, based on different materials and sensing principles, have been developed. The paper proposes a novel resistive humidity sensor based on cobalt doped silica thin film deposited on a quartz support by means of a sol-gel technology. This represents a first step in the realization of an integrated sensor able to measure both umidity and gas in environmental pollution applications.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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D. Amicone, A. Bernieri, G. Betta, L. Ferrigno, M. Laracca
The measurement of the electrical energy and its billing for tax purpose are of great relevance. In the past a scarce attention was given to issues as the calibration and the traceability of the electrical energy meters (EEMs), so that, at least in Italy, more than 30 millions of EEMs operate and put a tariff without proper metrological characterization. This situation is caused by both the absence of specific laws and the high cost related to the traceability process. In this ambit, a new European Directive on measuring instruments (MID) was introduced in 2004 with the aim of providing a...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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P. Arpaia, M. Buzio, V. Inglese, G. Spiezia
The experimental qualification of a new platform for magnetic measurements at the European Organization for Nuclear Research (CERN) is presented. The platform was validated in comparison with the CERN standard test magnet system at warm conditions using the rotating coil method on a superconducting dipole of the Large Hadron Collider. Further characterization tests were carried out at cryogenic temperature (1.9 K) in order to analyze dynamic phenomena of superconducting magnets with a time resolution never reached before.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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D.Costineanu, C.Fosalau, C.Damian, O.Plopa
The 3D points of a surface can be calculated from images achieved from two CCD cameras using stereoscopic methods. Classical procedures based on matching algorithms give errors at the highly curved or stepped surfaces. In this paper, we present a method to achieve a very high precision of measurement for surfaces with steps or holes, using a 3D multibeam scanner laser.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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Corrado Florian, Pier Andrea Traverso
A technology-independent set-up for the full and direct characterization of short-circuit low-frequency noise currents in two-port electron devices is presented. It is based on the use of low-noise transimpedance amplifiers and a specially-designed active bias network, adopted at the collector/drain port of the device. The features of the set-up proposed allow for a fast and accurate estimation of LF noise current power spectra, within a wide range of DC current bias levels, without the need for any reconfigurations and by carrying out a single-step procedure to achieve each bias point of...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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M. Borsero, C. Pravato, A. Sona, M. Stellini, A. Zuccato
In this paper, some critical issues concerning the measurement of radiated emissions of products in an electromagnetic compatibility test stage are dealt with. In particular, an approach is proposed to evaluate the adequacy of anechoic enclosures that do not fulfil the requirements regarding the normalized site attenuation (NSA) factor. The purpose is to suggest a test method that can be used in order to define a way to know the limits of the chamber in terms of the frequency response over some critical radiations. To this aim, a number of simulation analyses and experiments have been...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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H. Geirinhas Ramos, A. Lopes Ribeiro, T. Rädil, M. Kubínyi, M. Paval
Nowadays, eddy current non-destructive testing requires highly skilled operators that using hand-operated eddy current testers are able to recognize defects in conductive materials. The objective of our work is to overcome this problem by implementing a microcomputer based system to detect and estimate the size of cracks and other defects in conductive non magnetic material, with minimum operator intervention. In order to reach the best solution different hardware implementations have to be investigated. This paper compares the results obtained with three techniques already tested: using a...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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D.Gallo, C.Landi, N.Rignano
In the paper, the characterization of designed and implemented high-performance real-time power quality measuring instrument is discussed. After a description of the hardware, firmware, power quality analyzer software and USB based data transfer mode, the paper continues with the discussion on a set of preliminary performances tests. In particular a set of test based on dip measurement and Total Harmonic Distortion measurement have been made and will be reported.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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Romuald Masnicki, Janusz Mindykowski
In this paper, some remarks concerning cable as well as wireless connections in measurement channel are inserted. The demonstration application managing wireless network was shortly described. The main focus of paper is placed in the recognizing of the data acquisition protocols used in demo application for data transfer from wireless network to PC. The implementation of wireless sensor network to the virtual instrument under LabVIEW environment is presented.
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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G. Crotti, D. Giordano
The behaviour of the low and medium frequency environmental magnetic field meters is investigated with reference to the possible approaches that can be implemented to evaluate compliance with the field exposure limits. The investigation is carried out both numerically and experimentally, in presence of sinusoidal and distorted waveforms, which are produced by the systems for the generation of reference magnetic fields up to 100 kHz set up at the Istituto Nazionale di Ricerca Metrologica of Torino. The adoption of different methods in the evaluation of the compliance to the exposure...
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
· TC4
· 2008
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