A Metadata-Based Representation Method of the Internet of Things

摘要

In order to describe various IoT system consistently and efficiently, we propose a three-layer representation model for the IoT, including the conceptual model, the metadata model and the RDF model. In the conceptual model, we put forward the definition of entities, resources, services and devices in the IoT, and explain their functions and connections. In the metadata model, we propose the main data model of IoT, including virtual-entities, resources, services and devices. It provides virtual world of IoT the description based on metadata. In the RDF model, we describe the object of the IoT by the method of RDF (Resource Description Framework). It provides a unified grammar standard to format representations of the IoT. Based the above models, we propose a use case (i.e., a prototype IoT search system) to demonstrate their function.