物联网被视为继计算机、互联网和移动通信网络之后的第三次信息产业浪潮,因其广阔的行业应用前景而受到了各国政府的重视.本文首先介绍了物联网的概念及其演进历程,然后分析了物联网的架构体系和关键技术,并具体分析了射频识别技术、传感器技术、网络通信技术和云计算等,最后以智能电网、智能交通、物流管理等应用案例说明了物联网广泛的应用前景.%The internet of things (IoT) is seen as the third wave of the information industry after the computer, internet and mobile communication network. IoT has been paid more and more attention by the many countries because of its application prospect. This paper introduces the concept of IoT and its evolution. It also describes the system structure and the key technologies of IoT. Then the paper analyzes RFID, wireless sensor, the communication network and the computing of data transmission. The application prospect of IoT were illustrated by its use in smart grid, intelligent transportation and logistics management.
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