关键词：物联网；电子产品代码；网络架构；RFID系统
摘 要：The technology of the Internet of Things (IoT) has attracted highly attention of academia,industry,and news media.There are still many open issues in the definition,internal principles,architectures and system models of the IoT.Through the analysis of current technical materials,we first analyze three basic concepts and features of the IoT.Then we introduce the architecture composed of three layers of the IoT.Furthermore we summarize the key technologies of the IoT.Finally several development proposals are suggested for the loT.