Supporting a reconfigurable real-time service-oriented middleware with FTT-CORBA

Calvo, Isidro; Almeida, Luís; Pérez, Federico; Noguero, Adrian; Marcos, Marga

doi:10.1109/etfa.2010.5641098

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…Another example [9], presents an approach for dynamically reconfiguring a system based on a real-time variant of CORBA. This approach uses a networked video system as a case study and relies on a loose coupling between the components and timing aspects of the underlying network.…”

Section: B Resultsmentioning

confidence: 99%

Non-disruptive large-scale component updates for real-time controllers

Wahler

Richter

Kumar

et al. 2011

2011 IEEE 27th International Conference on Data Engineering Workshops

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Real-time controllers handle safety-critical environments such as power grids in a continuous way. Controllers are only updated during the same maintenance periods as the plant they control. As a consequence, old software versions are usually used longer than necessary, which can have a negative impact on performance, reliability, or security. This paper presents a solution for updating component-based controllers at runtime in a non-disruptive way -there is no "bump" in the control cycle. This solution allows for simultaneous updates of real-time components with arbitrarily large states.The solution is validated by demonstrating a large-scale dynamic software update on an embedded controller with a 1 kHz control cycle on RT Linux. As a corollary, we show that an arbitrary number of components can be simultaneously updated in a nondisruptive way.

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Section: B Resultsmentioning

confidence: 99%

Non-disruptive large-scale component updates for real-time controllers

Wahler

Richter

Kumar

et al. 2011

2011 IEEE 27th International Conference on Data Engineering Workshops

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“…In order to validate the proposed middleware architecture, the authors implemented FTT-MA using CORBA/CORBA-RT as underlying technology, the so-called FTT-CORBA [9]. It has been built on top of ACE and TAO [46].…”

Section: Ftt-ma Implementation and Use Casementioning

confidence: 99%

FTT-MA: A Flexible Time-Triggered Middleware Architecture for Time Sensitive, Resource-Aware AmI Systems

Noguero

Calvo

Pérez

et al. 2013

Sensors

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There is an increasing number of Ambient Intelligence (AmI) systems that are time-sensitive and resource-aware. From healthcare to building and even home/office automation, it is now common to find systems combining interactive and sensing multimedia traffic with relatively simple sensors and actuators (door locks, presence detectors, RFIDs, HVAC, information panels, etc.). Many of these are today known as Cyber-Physical Systems (CPS). Quite frequently, these systems must be capable of (1) prioritizing different traffic flows (process data, alarms, non-critical data, etc.), (2) synchronizing actions in several distributed devices and, to certain degree, (3) easing resource management (e.g., detecting faulty nodes, managing battery levels, handling overloads, etc.). This work presents FTT-MA, a high-level middleware architecture aimed at easing the design, deployment and operation of such AmI systems. FTT-MA ensures that both functional and non-functional aspects of the applications are met even during reconfiguration stages. The paper also proposes a methodology, together with a design tool, to create this kind of systems. Finally, a sample case study is presented that illustrates the use of the middleware and the methodology proposed in the paper.

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“…In this scenario, some middleware architectures based on the Flexible Time-Triggered (FTT) paradigm [22] like [9] and [11] provide some mechanisms to deal with the passage of time and concurrency in a flexible way in distributed real-time systems. Even though there are some differences between these middleware architectures, they are essentially based on a central component, the so-called Orchestrator, which is aimed at coordinating the execution of applications distributed over a LAN.…”

Section: Introductionmentioning

confidence: 99%

A Model for System Resources in Flexible Time-Triggered Middleware Architectures

Noguero

Calvo²,

Almeida

et al. 2012

Information and Communication Technologies

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Middleware has become a key element in the development of distributed Cyber Physical Systems (CPS). Such systems often have strict nonfunctional requirements, and designers need a means to predict and manage non-functional properties. In this work, the authors present a mathematical model for the most relevant resources managed by FTT middleware architectures; namely, (1) processor, (2) memory, (3) energy and (4) network. This model can be used both off-line for simulation and designing purposes of a Cyber Physical System (CPS), or in run-time within an admission test or inside the algorithm of a specific scheduling policy executed by the middleware. In such case, the admission test is aimed at predicting whether a system fulfils the non-functional requirements or not before carrying out any modification in its execution plan at run-time.

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Supporting a reconfigurable real-time service-oriented middleware with FTT-CORBA

Cited by 9 publications

References 10 publications

Non-disruptive large-scale component updates for real-time controllers

Non-disruptive large-scale component updates for real-time controllers

FTT-MA: A Flexible Time-Triggered Middleware Architecture for Time Sensitive, Resource-Aware AmI Systems

A Model for System Resources in Flexible Time-Triggered Middleware Architectures

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