The Internet of things refers to the networking between any things, also called M2M, and its specific definition is: ‘it connects the things and the internet with radio frequency identification (RFID) and other information sensing device, so as to realize the interconnection between human and human, between human and thing, and between thing and thing and to realize the intelligent identification management’. The main features of the internet of things is to obtain various information of physical world with information sensing device, conduct information transmission and interaction with internet, net and other network, and adopt intelligent computation technology for analysis and processing of various information obtained, so as to improve the sensing ability of material world and realize the intelligent decision-making and control. The internet of things mainly consists of sensing layer, network layer and application layer.