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Service-Oriented Distributed Measurement and Control Systems: A Case Study
Viegas, Vítor; Girão, P. Silva; Pereira, J. M. DiasThe paper presents a Distributed Measurement and Control System (DMCS) applied to a physical process equipped with all the instrumentation needed to run control loops for temperature, level, flow and pressure, quantities widely found in the process industry. The system is supported by a service-oriented middleware platform based on the IEEE 1451.1 std and the Windows Communication Foundation (WCF). Tests were m...
Performance Evaluation of a Web-Service-Based DMCS
Viegas, Vítor; Girão, P. Silva; Pereira, J. M. DiasThe paper describes a set of experiments conducted on a service-oriented middleware infrastructure in order to evaluate its performance and applicability in the context of Distributed Measurement and Control Systems (DMCS). The infrastructure, entirely based on Web Services, was built using the Windows Communication Foundation (WCF), a software package released by Microsoft to develop distributed applications. ...
Open Controller for Distributed Instrumentation Systems
Viegas, Vítor; Girão, P. Silva; Pereira, J. M. DiasThe paper presents a controller designed to be highly interoperable in the context of distributed instrumentation systems. Interoperability is achieved by adopting strong standards – the IEEE 1451.1 Std to be more precise – and by using cross-platform, manufacturer-independent technologies such as Web Services. The 1451.1 Std contributes with its information model to represent data and organize functionalities ...
Next Generation Application Processor Based on the IEEE 1451.1 Standard and Web...
Viegas, Vítor; Pereira, J. M. Dias; Girão, P. SilvaOver the last decade, the 1451.1 Std has been a reference model to develop smart and open distributed measurement and control systems. Now, that the 1451.1 Std is about to be revised, there is the opportunity to enrich it with emergent and successful technologies as is the case of Web Services. Following this idea, we present a prototype of Network Capable Application Processor (NCAP) that runs on the .NET Fram...
IEEE 1451.1 Standard and XML Web Services: a Powerful Combination to Build Dist...
Viegas, Vítor; Pereira, J. M. Dias; Girão, P. SilvaIn 2005, we presented the NCAP/XML, a prototype of NCAP (Network Capable Application Processor) that runs under the .NET Framework and makes available its functionality through a set of Web Services using XML (eXtended Markup Language). Giving continuity to this project, it is time to explain how to use the NCAP/XML to build a Distributed Measurement and Control System (DMCS) compliant with the 1451.1 Std. This...
Using a Commercial Framework to Implement and Enhance the IEEE 1451.1 Standard
Viegas, Vítor; Pereira, J. M. Dias; Girão, P. SilvaIn 1999, the 1451.1 Std was published defining a common object model and interface specification to develop open, multi-vendor distributed measurement and control systems. However, despite the well-known advantages of the model, few have been the initiatives to implement it. In this paper we describe the implementation of a NCAP – Network Capable Application Processor, in a well-known and well-proven infrastruc...
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