Research On Entity Information Description And Search Technology For Internet Of Things Based On Web

With the Internet of Things has got much attention of community, It is widely used in many aspects. Internet of Things system contains many entities, the physical entity of information collected by sensor can be shared on the Web, which makes the control sensor or physical entity become a new application based on Internet of Things of Web. For the Internet of Things, search service will sort the information that perceive objective physical world, which can help people find the content or information more quickly and make the resources of Internet of Things more efficient. Internet of Things combine with Web technology achieve Web query function for Internet of Things entity is a research direction. The main search service needs research for Internet of Things include : data description, semantic annotation, data storage and query.In this paper, accessing entity data with real-time and searches is studied for Internet of Things. First, Web systems based on Internet of Things is built for lab environment and physical data source, the static properties of each sensor is described by microdata, the dynamic data upload to the Website through Zigbee wireless and complete structures page, providing the experimental environment for accessing event data with real-time and search for Internet of Things. Secondly, using the way of the Watir, Nokogiri and Rufus-scheduler achieve event information for Internet of Things with real-time and continuous. Using the Nokogiri parse obtained HTML document and get the HTML content, combined with the structure and parsed content of Web pages to add event, then save the event data under certain conditions to meet application needs. Finally, Internet of Things for entity attribute and event information is searched. In this paper, search framework is established based on Lucene and the entity attributes include static and dynamic properties. In the process of static resources, using microdata named Itemid identify each specific entity information and search out all the static resources within Itemscope; In the process of dynamic properties, using Watir position dynamic data and establish indexing of dynamic library. Meanwhile, achieve search event data with real-time through the obtained data. In this paper, the following search contents were completed: search for a specific physical entity which include all attribute information; search a property for a specific physical entity; search event attribute value of physical entity based on semantic information.