1. McDerwin: the perception layer related technology Internet awareness layer solves the problem of data acquisition in the human world and the physical world, including various physical quantities, logos, audio, video data. The perception layer is at the lowest level of the three layers structure, which is the foundation of the development and application of the Internet of things, and has the core capacity of the comprehensive perception of the Internet of things. As the most basic layer of the Internet of things, the perception layer is very important to use. It is like the eyes and ears of people to see the information that needs to be monitored in the world. Perception layer generally includes data acquisition and data close two parts, namely, first by smart sensors, camera equipment external physical world of data, and then through the blue tooth, infrared, ZigBee, industrial field bus short cable or wireless transmission technology to transfer data. You can also use only the short distance of the data to transmit this part, especially if only the unique identifier of the item is passed. In fact, the two parts of the perceptual layer are sometimes difficult to distinguish. The key technologies needed for the sensing layer include detection technology, medium and low speed wireless or wired proximity transmission technology. Specifically, perception layer integrated intelligent sensor technology, embedded computing technology, intelligent network technology and wireless communication technology, distributed information processing technology, etc., through all kinds of integrated micro sensor collaboration to real-time monitor, sense and set various environmental or monitoring object information, through the embedded system in information processing, and through random self-organizing wireless network with multiple hops relaying mode will perceive information sent to the access layer of the base station node and access gateway, and finally reach the user terminal, so as to truly achieve & other; Everywhere ” The idea of the Internet of things.
2, MaiDeSheng: network layer related technology Internet network layer is established on the basis of the existing communication network and the Internet, is the fusion and extension of existing network, to achieve a more extensive connection function. Internet network layer can perceive the perception layer of information accessibility, high reliability and high security, it is to solve the perception layer data within a certain range, especially in long distance transmission problems. These data can be transmitted through mobile communication network, international Internet, Intranet of enterprises, various specialized networks, small local area network and so on. At the same time, the cable network can also take on the function of the Internet of things network, which is conducive to the accelerated development of the Internet of things. So, the establishment of a national, a huge, integrated business management platform, the various sensor information collection and management, conduct a directional transmission, this is the Internet of things is an important problem in the process of building. The key technologies needed for the iot network layer include long-distance cable and wireless communication technology, network technology, etc. The network layer will combine 2G/3G/ 4G, wired broadband, PSTN, wi-fi and other communication technologies to realize the combination of wired and wireless, the combination of broadband and narrowband, and the combination of perceptual network and communication network. At the same time, the perception data management and processing technology in the network layer are the core technologies of the data - centered Internet of things. Perceived data management and processing technologies include the storage, query, analysis, mining, understanding, and theories and techniques based on perceived data decisions and behavior based on the data of the Internet of things.
3. Madsheng: application layer related technology is the driving force and purpose of the development of the Internet of things. The main function of application layer is to analyze and deal with the information of perception and transmission, make correct control and decision, and realize intelligent management, application and service. This layer solves the problem of information processing and man-machine interface. The application of Internet of things can be classified as monitoring (logistics monitoring, pollution monitoring), type a query (intelligent retrieval, remote meter reading), control, intelligent transportation, smart home, street lamp control), brush stroke type (mobile wallet, highway, parking fees), etc. Iot application layer to provide users with rich business experience, however, how to reasonably and efficiently handle huge amounts of data coming from the network layer, and extract effective, iot application layer is a key problem to solve. The key technologies needed for the iot are M2M (MachinetoMachine) business research, cloud computing, etc. The M2M business realizes automatic acquisition and automatic control of machine equipment information by combining communication technology, intelligent control technology and software intelligent processing technology. The goal of M2M technology is to make all machine devices networked and communicable, and the core idea is network. Cloud computing is the development of distributed processing, parallel processing and grid computing. Cloud computing because it has strong processing power, storage capacity, bandwidth and high cost performance, naturally becomes an important part of the Internet of things, is also the foundation of the application layer can provide many services. It can be for a variety of iot applications provide a unified service delivery platform, can provide the Internet of things application with vast amounts of computing and storage resources, can also provide a unified method, data storage formats and data. Using cloud computing greatly simplifies the delivery of applications, reduces delivery costs, and improves efficiency. At the same time, the Internet of things will also be the biggest user of cloud computing, driving cloud computing to greater commercial success.
Author: wang yuan, zhao bingchen, Chen ji-fang, liu yinlong
