Context-Aware Technology of Disabled Health Service for Intelligent Community

With the rapid development of Ubiquitous computing, context-aware technology as one of the core contents of the former has made a series of research progress and achievements. Context-aware technology can automatically provide the corresponding services according to the strategy given by the inference engine through sensing the related context of the environment and tasks. It is because context-aware technology can significantly improve the intelligence of computer interaction, the application of this technology to "Intelligent community" which is a new concept built on the highly developed Internet and sensor networks has become more promising and meaningful. As an important part of the intelligent community, the technology is also of great use for the disabled health service. Based on the research of the theory of context-aware technology and the examples of international development applications, this paper designs an ontology based context-aware system framework named CA-DHS for disabled health service. The hierarchy based framework uses ontology to standardize and formalize context information and complete context modeling. This framework includes the collection and encapsulation of the original context information and constructs a formal reasoning model. Moreover, the framework provides query and subscription services as the external interface of the system. On the basis of this framework, the DHS-Protosystem (Disabled Health Service Protosystem) is designed and implemented. This paper introduces implementation of query and subscription service module.