Context-aware service composition framework in web-enabled building automation system (original) (raw)
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Semantic Context-Aware Service Composition for Building Automation System
IEEE Transactions on Industrial Informatics, 2014
Service-oriented architecture (SOA) is realized by independent, standardized, and self-describing units known as services. This architecture has been widely used and verified for automatic, dynamic, and self-configuring distributed systems such as in building automation. This paper presents a building automation system adopting SOA paradigm with devices implemented by device profile for web service (DPWS) in which context information is collected, processed, and sent to a composition engine to coordinate appropriate devices/services based on the context, composition plan, and predefined policy rules. A six-phased composition process is proposed to carry out the task. In addition, two other components are designed to support the composition process: building ontology as a schema for representing semantic data and composition plan description language to describe context-based composite services in form of composition plans. A prototype consisting of a DPWSim simulator and SamBAS is developed to illustrate and test the proposed idea. Comparison analysis and experimental results imply the feasibility and scalability of the system.
Context modeling in owl for smart building services
Tagungsband zum, 2008
This article presents an approach to context-aware services for "smart buildings" based on Web and Semantic Web techniques. The services striven for are first described, then their realization using Web and Semantic Web services is explained. Finally, advantages of the approach are stressed.
A smart web service based on the context of things
ACM Transactions on Internet Technology, 2012
Combining the Semantic Web and the Ubiquitous Web, Web 3.0 is for things . The Semantic Web enables human knowledge to be machine-readable and the Ubiquitous Web allows Web services to serve any thing, forming a bridge between the virtual world and the real world. By using context, Web services can become smarter—that is, aware of the target things' or applications' physical environments, or situations and respond proactively and intelligently. Existing methods for implementing context-aware Web services on Web 2.0 mainly enumerate different implementations corresponding to different attribute values of the context, in order to improve the Quality of Services (QoS). However, things in the physical world are extremely diverse, which poses new problems for Web services: it is difficult to unify the context of things and to implement a flexible smart Web service for things. This article proposes a novel smart Web service based on the context of things, which is implemented usin...
Coordinating the web of services for a smart home
ACM Transactions on the Web, 2013
Domotics, concerned with the realization of intelligent home environments, is a novel field which can highly benefit from solutions inspired by service-oriented principles to enhance the convenience and security of modern home residents. In this work, we present an architecture for a smart home, starting from the lower device interconnectivity level up to the higher application layers that undertake the load of complex functionalities and provide a number of services to end-users. We claim that in order for smart homes to exhibit a genuinely intelligent behavior, the ability to compute compositions of individual devices automatically and dynamically is paramount. To this end, we incorporate into the architecture a composition component that employs artificial intelligence domain-independent planning to generate compositions at runtime, in a constantly evolving environment. We have implemented a fully working prototype that realizes such an architecture, and have evaluated it both in terms of performance as well as from the end-user point of view. The results of the evaluation show that the service-oriented architectural design and the support for dynamic compositions is quite efficient from the technical point of view, and that the system succeeds in satisfying the expectations and objectives of the users.
Service Ecologies for Home/Building Automation
Service ecologies are networks of services pervasively embedded in everyday environments, e.g., smart homes, where they are composed and orchestrated in order to provide advanced functionalities. In this paper, we show how the interplay of off-line and on-line composition of services can improve flexibility and adaptiveness.
A generic service oriented software platform to design ambient intelligent systems
Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers - UbiComp '15, 2015
Smart devices or smart things are widely deployed within environments and have to work in concert to assist users in many domains. The interoperability between things is achieved by the help of Internet and Web of Things. Despite this progress, a main challenge remains to fully manage the heterogeneity of the smart things: handling their dynamicity at runtime. In this paper, we present a three layers platform to address this challenge. The first layer monitors the appearance and disappearance of smart things in the environment. The second one provides mechanisms to dynamically compose the services provided by smart things. The third layer offers an autonomic context-driven composition mechanism based on a new software paradigm: 'application schemas'. This layer manage the interferences and conflicts that may occur during the autonomic composition process.
International Journal of Distributed Sensor Networks, 2018
This article presents an Internet of Things architecture for Smart Homes that specifically targets service composition and reconfiguration as enablers for the actuation and smart behavior capabilities. To this end, the main challenge that has to be addressed is the support to a seamless integration, composition, and reconfiguration of Internet of Things objects. Two enabling technologies are proposed here: a planning strategy based on a common-sense reasoning approach for service composition and a virtual-network protocol for Inter-Domain Messaging. The planner will identify the services that, properly connected, will cater for arisen, and therefore, unexpected needs. The virtual-network protocol will provide the support for this interconnection to take place in a transparent and orthogonal manner. This is particularly important to enable autonomous systems to instantiate composite services. To demonstrate the capabilities of the resulting framework, two use cases are presented, whi...
The Smart Home meets the Web of Things
International Journal of Ad Hoc and Ubiquitous Computing, 2011
In recent years, the merging of computing with physical things, enabled the transformation of everyday objects into information appliances. We propose to reuse the central principles of the modern Web architecture to fully integrate physical objects to the Web and build an interoperable Smart Home. We present an application framework that offers support for multiple home residents concurrently. We show that by using the Web as application layer we can build flexible applications on top of heterogeneous embedded devices with only a few lines of code, transforming home automation into a trivial task. We address many issues related to Web-enabling these devices, from their discovery and service description to the uniform interaction with them. Our evaluation efforts indicate that our framework offers acceptable performance and reliability.
Up in the Air: When Homes Meet the Web of Things
ArXiv, 2015
The emerging Web of Things (WoT) will comprise billions of Web-enabled objects (or "things") where such objects can sense, communicate, compute and potentially actuate. WoT is essentially the embodiment of the evolution from systems linking digital documents to systems relating digital information to real-world physical items. It is widely understood that significant technical challenges exist in developing applications in the WoT environment. In this paper, we report our practical experience in the design and development of a smart home system in a WoT environment. Our system provides a layered framework for managing and sharing the information produced by physical things as well as the residents. We particularly focus on a research prototype named WITS, that helps the elderly live independently and safely in their own homes, with minimal support from the decreasing number of individuals in the working-age population. WITS enables an unobtrusive monitoring of elderly peop...