Abstract: Event detection based on heterogeneous data sources is a typical application in the environment of internet of things.Existing technology can fulfill the collection,filtering and presentation of data from heterogeneous data sources,and also support some data’s fusion and analysis in low level.However,the obtainment of domain specific knowledge and automatically drawing hidden conclusions still require human intervention.For this case,this paper presented an intelligent method based on εL⁺⁺ to fulfill automatic detection of events in sensor networks.Firstly,we introduced speci-fic scene about the sensor network and described its domain knowledge with the lightweight description logic εL⁺⁺.Secondly,we definited event that is to be judged according to its complexity.Finally,we used an instance to check the proposed method.This method takes full advantage of description logic’s clear semantics and good reasoning ability and can give the right results with domain specific knowledge and concrete data.

Key words: Internet of things,Heterogeneous data sources,Sensor network,Description logic,Event detection