Hrvoje Pandžid, Darjan Bošnjak, Igor Kuzle, Marin Boškovid, Damir Ilid
The smart metering system is used for the remote measurement of measurands for a purpose of billing, and to process and transmit measurement results. Generation and transmission of measurement information by electric impulses has already been used at summarizing billing meters where the base meter is equipped with the impulses generator which directly or indirectly emits impulse to a master summarizing meter. The application of more developed remote meter reading systems has intensified in the last decade of previous century. Today, most of distribution companies in Europe use remote meter...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Andrea Cataldo, Egidio De Benedetto, Emanuele Piuzzi, Giuseppe Cannazza
In this work, the feasibility of the adoption of microwave reflectometry (MWR) for diagnosing the status of structures made of composite materials is investigated. In particular, two different “sensing structures”, based on microstrip and coplanar configurations, are considered. The analysis focused on carbon fibre-reinforced composite structures, which are extensively used in aircraft industry. It goes without saying that, despite the widespread diffusion of this class of materials in the aircraft industry, there are two crucial requirements for which effective diagnostic methods are far...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Bittera Mikulas, Smiesko Viktor, Kovac Karol
Different method to calculate uncertainty of antenna factor measurement is presented in this paper. This approach does not break the rules of standard uncertainty calculation approach, but reduces the entire uncertainty. It is obtained by performing the measurement with two reference dipole antennas and considering frequency dependent contributions of the uncertainty as well as the possible covariance between them.
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
V. Afonso, L. Fiscarelli, J. García Pérez, G. Montenero, L. Walckiers
A flexible and easy-to-implement management structure for large amount of measurement and test data is proposed. Its main aim is to cope with industrial and research environment where the difficulty to make measurements requires to minimise the number of measurements campaigns and maximize the use of the data taken in these campaigns. This goal is achieved by providing well-defined structures for raw data storage and Data Base storage and clear separation between the analysis processes. A case study on test data of superconducting magnets for the Large Hadron Collider at the European...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Sergiej Taranow, Yurij Tesyk, Oleh Karasinskij, Stanislava Pronseleva
Transfer measurements from the standard of direct voltage to the standard of alternative voltage is widely used in measurement and instrumentation. Well known method is based on the usage of thermo converter of voltage. There are some drawbacks of this method such as instability of error, hand mode of calibration and inertia of reproduction process. The new method of reproduction AC (AV) value proposed by usage of inertia’s properties of links of the parallel-resonance circuit to transfer measurements from the standard of direct current to the standard of alternative current. The paper...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
A. Hariton, L. Nita, M. Cretu
This research project aims to minimize the time of accomplishing of a set of laboratory work using real measurement instruments with a virtual laboratory. Virtual laboratory users, usually students, will access the actual distance measurement system through a web interactive interface without expecting the system release when multiple users access at the same time measuring system. Using web application, information about each user is stored in a database which will contain also measurement results obtained by each work in laboratory. This project improves the system of e-learning and help...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Joan Gómez-Clapers, Ramon Casanella
In this work, a novel wireless easy-to-use measuring system is presented to acquire the Lead I ECG signal and the heart rate. The system presents a novel application of the dual ground configuration to dry electrodes, to reduce their level of power line interference. With this, a good quality Lead I EGC signal can be obtained simply by placing the right and left hands on the dual electrodes. Heart rate is obtained with a novel algorithm based on the continuous wavelet transform (CWT), especially designed to avoid the electromyographic noise that can be present when acquiring signals in the...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Emil Vremera, Luciano Brunetti
The paper presents the methods used for realizing and characterizing the insulating lines of twin broadband microcalorimeters. Both thermal and electrical measurements have been applied, together with electro-thermal modelling, to insulating coaxial line assemblies of different type from dc to 40 GHz.
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
José Santos, Pedro M. Ramos
This paper describes a device based on a dsPIC (Digital Signal Peripheral Interface Controller) as a processing unit, capable of making impedance measurements at multiple frequencies. A DDS (Direct Digital Synthesizer) stimulates the measurement circuit composed by the reference impedance and the unknown impedance. The voltages across the impedances are amplified by programmable gain instrumentation amplifiers and then digitized by analog to digital converters. To measure the impedance, a seven-parameter sine-fitting algorithm is used to estimate the sine signals parameters. The dsPIC is...
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download
Andrea Mariscotti
Low stray capacitance solenoids are air solenoids, possibly single layer, with significant turn-to-turn spacing. The problem of the correct estimation of the stray capacitance is relevant both during design and to validate measurement results. The expected value is so low that any stray capacitance of the external instruments is relevant; a simplified method is proposed that doesn’t perturb the stray capacitance of the solenoid under test. The method is based on the resonance with an external capacitor and on the use of a linear regression technique.
Instrumentation for the Information and Communication Technology Era
· TC4
· 2010
· Download