1,720,964 research outputs found
Un'architettura virtuale scalabile per telerilevamento distribuito
No full textIl sempre maggior interesse nei confronti di problematiche ambientali quali, ad esempio, quelle legate all’inquinamento dell’aria oppure all’inquinamento elettromagnetico, ha portato alla necessità di disporre di adeguati strumenti di monitoraggio del territorio, strutturati per offrire, in modo efficiente ed automatico, l’immagine dell’evoluzione temporale di un insieme di parametri di interesse opportunamente definito. In particolare, risulta importante l'adozione di metodologie di misura il più possibile indipendenti dai dispositivi fisici effettivamente utilizzati. Inoltre, il monitoraggio deve poter interessare, in uguale misura, situazioni territoriali di dimensioni piccole o comunque localizzate, ma anche aree di vaste proporzioni sino a considerare un sistema distribuito su scala nazionale. Ciò presuppone l'utilizzo di un'architettura di rete tale da soddisfare requisiti di scalabilità. Ulteriori informazioni di carattere generale sono riportate in "Un modello three-layer per telerilevamento distribuito". Nella presente memoria vengono affrontate le problematiche relative alla virtualizzazione del sistema di misura e alla scalabilità di rete
An advanced distributed architecture for telemonitoring services
No full textThis paper presents the results of the European Community research project ADA, Advanced Distributed Architecture for Telemonitoring Services. The project main purpose is to provide a framework for the development of a distributed sensor network. Main elements of the system architecture are identified and their functions are discussed. An outline of a possible implementation based on the Jini™technology is provided
A Multi-thread Virtual Instrument for Intensive Spectrum Analyser Training
No full textThe scanning spectrum analyser is a particularly complex instrument, which requires careful
understanding of its operating principles and a good deal of
training to be employed properly. In this paper the
development of a spectrum analyser virtual instrument, that
can be offered as intensive self-study laboratory exercises, is presente
Virtual environment for fast development of distributed measurement applications
No full textThis paper deals with a virtual environment that allows automatic measurement systems to be easily developed by accessing programmable instrumentation, which can be located either in a local or in a remote laboratory. The environment, which is based on a client-server application that runs on a single personal computer or over the Internet, is designed to hide most of the details connected to the setup of a complex measurement system to the users. Client and server applications have been developed in Java™ language so that they can be used on different platforms and are easily extensible to accommodate new processing tasks, interfaces, and instruments
E-learning in instrumentation and measurement courses
No full textE-learning is the one possible evolution of traditional teaching techniques and is becoming a mature technology. Several commercial suites are available to author multimedia courses either to be distributed in physical form (e.g. on CD or DVD) or to be used on-line. However the application of these suites to the instrumentation and measurement courses and in general to courses that require students to learn the use of real devices is difficult and sometime useless. In this paper, some peculiar aspects of the instrumentation and measurement courses are discussed, focusing on the impact of e-learning techniques in laboratory activities. Practical hints coming from the authors' experience in several years of in-the-field trials are reported and discusse
Platform Independent Architectures for Cooperative Remote Control of Automated Test Laboratories
No full textVirtual environment for fast development of distributed measurement applications
No full textThis paper describes a virtual environment that allows efficient development of distributed measurement applications. Most of the details associated with the set up of complex measurement systems are hidden to the programmers, so that most programmable instrument can be easily integrated and managed. The environment is based on the Java language so that it can be used on different platforms and is easily extensible to accommodate new processing tasks, interfaces and instrument
Platform independent architectures for cooperative remote control of automated test laboratories
No full textThis paper presents solutions for the development of test procedures that require remote control of instrumentation through the network. At first, a brief critical summary of some existing technologies is reported and commented. Then, an architecture based on a multiserver-multiclient paradigm is described. The architecture provides instrumentation management in a device-independent manner, fast development of user applications and supports different network configurations
E-learning in instrumentation and measurement courses
No full textE-learning is the one possible evolution of traditional teaching techniques and is becoming a mature technology. Several commercial suites are available to author multimedia courses either to be distributed in physical form (e.g. on CD or DVD) or to be used on-line. However the application of these suites to the instrumentation and measurement courses and in general to courses that require students to learn the use of real devices is difficult and sometime useless. In this paper, some peculiar aspects of the instrumentation and measurement courses are discussed, focusing on the impact of e-learning techniques in laboratory activities. Practical hints coming from the authors' experience in several years of in-the-field trials are reported and discussed
Un modello three-layer per telerilevamento distribuito
No full textIl rilievo di parametri ambientali sta acquisendo un'importanza crescente in molteplici campi di interesse tra i quali, ad esempio, la salute pubblica, il monitoraggio di agenti a rischio di incolumità in insediamenti industriali, o del livello di inquinanti dovuti al traffico in aree urbane, la salvaguardia di aree idrogeologiche. La diffusione delle problematiche legate all'ambiente ha introdotto la necessità di disporre di una rete integrata di sensori per telerilevamento. In particolare, un sistema di monitoraggio deve soddisfare numerosi requisiti. In primo luogo, esso deve essere geograficamente distribuito. Di conseguenza è opportuno che utilizzi, per quanto possibile, un cablaggio preesistente e tecnologie basate su Internet al fine di consentire un'adeguata scalabilità di rete e facilità di accesso al sistema. Inoltre, esso deve prevedere il supporto di una adeguata varietà di sensori anche di natura diversa, e deve essere facilmente espandibile e riconfigurabile. Infine, deve essere in grado di gestire sia livelli di accesso alle risorse distinti per utenza, tipologia di sensore, politiche di leasing dei dati acquisiti, sia eventi che richiedono interventi rapidi come in situazioni di allarme
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