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Network based on the theory of material and technology, industry practice, observation, CNNIC analyst Li Changjiang, the object network system is divided into three levels: perception layer, network layer, application layer, and accordingly a general object network system architecture described . Perception layer address is the human world and the physical world of data acquisition problems. Can be further divided into two sub-layers, the first through the sensor, digital cameras and other equipment outside the physical world data collection, and then through RFID, bar code, industrial field bus, Bluetooth, infrared and other short-range data transmission technology transfer. Can also only a short distance data transmission this layer, especially when the only unique identifier delivered goods situations. In fact, these two sub-layer is sometimes difficult to clearly distinguish. Perception level, including the key technologies needed to test technology, wired and wireless short-range communication technology. Network layer address is the perceived level of data obtained within a certain range, usually long-distance transmission problems. These data can be mobile communication network, the Internet, corporate intranet, various types of special network, small LAN network transmission. Especially when three are integrated, the cable network can assume the functions of network layer Internet of things, help accelerate networking thing. Network layer, including the key technologies needed for long-distance wireline and wireless communication technology, network technology. Application layer solution is information processing and human-machine interface problems. The data from the network layer transport layer, to enter all this information processing system, and through a variety of devices to interact with people. This layer can also form directly divided into two sub-layers. One is the application layer, data processing, it covers every sphere of national economy and society, including electric power, medical, banking, transportation, environmental protection, logistics, industry, agriculture, urban management, home life, including the payment, monitoring , security, location, inventory, forecasting, etc., can be used for government, enterprises, social organizations, families and individuals. This is the Internet of Things as an important manifestation of the depth of information. Another is the terminal device layer, to provide human-machine interface. Although the Internet of Things "are connected to the network thing," but the ultimate is to people-oriented, and ultimately require human operation and control, but here are far beyond current human-machine interface between man and computer interaction concept but pan- means connected with the application of various equipment and human feedback. Between the layers, not one-way transmission of information can have interaction, control, the message varied items of which the key is information, including specific applications in the context of recognition can uniquely identify items code and static and dynamic information items. In addition, layers of software and integrated circuit technology are the key technologies required. I am an expert from steelslittingmachine.com, while we provides the quality product, such as steel slitters , sheet metal slitter, slitting and rewinding machine,and more.
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