What are the main layers of the Internet of Things architecture?

The architecture of the Internet of Things is mainly divided into: 1. Perception layer, which is the basis for the development and application of the Internet of Things; 2. Network layer, a converged network based on the existing communication network and the Internet; 3. The application layer integrates IoT technology and professional technology, and uses analyzed and processed sensory data to provide users with rich specific services.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The architecture of the Internet of Things can be divided into three levels: perception layer, network layer and application layer.

Perception layer. It is the basis for the development and application of the Internet of Things, including data collection equipment such as sensors or card readers, and the sensor network before data is accessed to the gateway. The perception layer uses RFID, sensing and control, short-distance wireless communication, etc. as its main technologies. Its task is to identify objects and collect relevant information in the system, so as to realize the understanding and perception of "things".

Network layer. It is a converged network built on the existing communication network and the Internet. The network layer is connected to the mobile communication network and the Internet through various access devices. Its main task is to realize information through the existing Internet, radio and television networks, communication networks, etc. transmission, preliminary processing, classification, aggregation, etc., used to communicate between the perception layer and the application layer. At present, domestic communication equipment and operators are relatively strong and are the most mature part of my country's Internet technology field.

Application layer. It integrates IoT technology and professional technology, and uses analyzed and processed sensory data to provide users with rich specific services. The application layer is the purpose of the development of the Internet of Things. The applications of the Internet of Things can be divided into control type, query type, management type and scanning type, etc. A wide range of intelligent application solutions can be realized through existing mobile phones, computers and other terminals.

Data expansion:

The entire structure of the Internet of Things can be divided into two parts: the radio frequency identification system and the information network system. The radio frequency identification system mainly consists of tags and readers, which communicate through the RFID air interface. After the reader obtains the product identification, it uploads the product identification to the middleware of the information network system through the Internet or other communication methods, and then obtains the object name of the product through ONS parsing, and then obtains various aspects of the product information through various interfaces of the EPC information service. related services. The operation of the entire information system will rely on the Internet network system and the communication protocols and description languages ​​developed on the basis of the Internet.

So we can say that the Internet of Things is the sum of information services about various physical products based on the Internet. From an application point of view, three levels in the Internet of Things deserve attention. In other words, the Internet of Things consists of three parts: First, the sensor network, which is mainly based on QR codes, RFID, and sensors to realize the detection of "things" identification. The second is the transmission network, which realizes data transmission and calculation through the existing Internet, radio and television networks, communication networks, etc. The third is the application network, that is, the input and output control terminal.

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