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The editor will share with you which three layers of the Internet of things are divided. I hope you will gain something after reading this article. Let's discuss it together.

The Internet of things is divided into three layers: the network layer, the application layer and the perception layer; the network layer is equivalent to the human nerve center and brain, responsible for transmitting and processing the information obtained by the perception layer, and the application layer is the interface between the Internet of things and users. the perception layer is composed of various sensors and sensor gateways.

The Internet of things can be divided into three layers: network layer, application layer and perception layer.

The network layer consists of a variety of private networks, Internet, wired and wireless communication networks, network management systems and cloud computing platforms, which are equivalent to human nerve centers and brains, and are responsible for transmitting and processing the information obtained by the perceptual layer.

The application layer is the interface between the Internet of things and users (including people, organizations and other systems). It combines with the needs of the industry to realize the intelligent application of the Internet of things.

The sensing layer consists of various sensors and sensor gateways, including carbon dioxide concentration sensors, temperature sensors, humidity sensors, QR code tags, RFID tags and readers, cameras, GPS and other sensing terminals.

The function of the perceptual layer is equivalent to the nerve endings of human eyes, ear, nose, throat and skin. It is the source of the Internet of things to identify objects and collect information. Its main function is to identify objects and collect information.

Extended data:

Related technology

1. Address resources

The implementation of the Internet of things requires each object to be assigned a unique identity or address. The earliest idea of addressability was based on RFID tags and unique coding of electronic products.

Another idea from the semantic Web is to use existing naming protocols, such as uniform resource identifiers, to access all items (not limited to electronics, smart devices and items with RFID tags). These items themselves cannot talk, but in this way they can be accessed by other nodes, such as a powerful central server.

2. Artificial intelligence

Autonomous control does not depend on the network architecture. However, the current research trend is to combine autonomous control with the Internet of things. In the future, the Internet of things may be an indecisive and open network, in which self-organized or intelligent entities and virtual objects can interact with the environment and operate independently based on their respective purposes.

3. Architecture

In the Internet of things, an event information is probably not a pre-determined message with a definite syntactic structure, but a self-expressive content, such as the semantic Web.

Accordingly, information does not need to have a definite protocol to regulate all possible content, because it is impossible to have an "ultimate specification" that can predict all information content.

That kind of top-down standardization is static and can not adapt to the dynamic evolution of the network, so it is impractical. Information on the Internet of things should be self-explanatory, conform to some standards, and evolve at the same time.

4. System

Not all nodes in the Internet of things have to run at the global level, such as the TCP/IP layer. For example, many end sensors and actuators do not have the ability to run the TCP/IP stack and instead access them through ZigBee, fieldbus, and so on.

These devices usually have limited address translation and information resolution capabilities, and in order to connect these devices to the Internet of things, some kind of agent devices and programs are needed to communicate with the devices in the subnet in "local language".

Translate the "local language" and the upper network language to make up for the lack of access capacity of the equipment. Therefore, this kind of agent device is also one of the important components of the hardware of the Internet of things.

After reading this article, I believe you have a certain understanding of "which three layers of the Internet of things". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for your reading!

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