What are the functions of the four levels of the Internet of Things?

The four levels of the Internet of Things: 1. Perception layer, responsible for the collection and acquisition of IoT information; 2. Network layer, transmits the information collected by the perception layer to the IoT cloud platform; 3. Platform layer , mainly solves the problems of data storage, retrieval, use and data security and privacy protection; 4. Application layer, mainly used to process information.

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

The Internet of Things can be roughly divided into the following four layers: perception layer, network layer, platform layer and application layer.

(1) Perception and identification layer: The perception layer is responsible for the collection and acquisition of IoT information and is the foundation of the overall architecture of the IoT. At the perception layer, the sensor senses the object itself and surrounding information, so the object also has the ability to "speak and publish information".

(2) Network construction layer: The network layer transmits the information collected by the perception layer to the IoT cloud platform, and is also responsible for transmitting commands issued by the IoT cloud platform to the application layer, which has a link effect. The network layer mainly transmits large amounts of information through the Internet of Things, the Internet and mobile communication networks.

(3) Platform management: Platform management mainly solves issues such as data storage, retrieval, use and data security and privacy protection.

(4) Comprehensive application layer: The ultimate goal of the Internet of Things is to be applied in various scenarios. After processing the information transmitted by objects on the Internet of Things cloud platform, the valuable information excavated will be applied to smart logistics , smart medical care, food safety, etc. in real life and work.

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