Overview of the Internet of Things

This paper presents the definition of IOT(the Internet of Things) and the related technology required by the perception layer,network layer,and application layer.The application of IOT in real life is described,and several examples in public safety,environment and other fields are given to elaborate the value of IOT.This paper lists some problems faced by IOT,and discusses the bottlenecks in technical standards,security,and protocol etc.In addition,this paper gives a brief introduction of the current development of IOT industry chain,and based on this,it draws a conclusion that the development of IOT is a difficult process,but its bright future is worth further efforts.