In the future, IoT applications will move from simple state detection and automation to high-level integrated management scheduling and intelligent development decision-making in different enterprise industries and different fields in China.

The relationship between Internet of Things and Internet

The Internet of Things is also a link network, qcm6125 which also has many characteristics of the original Internet and mobile Internet, and the general MQTT protocol is also run on the basis of TCP/IP of the Internet. Therefore, the Internet of Things is an Internet-based network, developed and expanded from the Internet, and its simplified high-rise building relationships are as follows:

1. The Internet of Things is the interconnection of things, qualcomm qcm6490 which is the further extension and development of the computer-based Internet.

2. Participants in the Internet of Things (iot) have expanded to include all sentient devices and objects

3. many development channels and operations of the Internet of things still need to be supported by the Internet, especially China's mobile application Internet

4. Internet of Things technology has many different scenarios due to the research fields and characteristics of management work, so it coexists through a variety of mainstream protocols and networking methods

Overall architecture and hierarchical structure of the Internet of Things

The Internet of Things is usually divided into four layers: perception, network, platform, application layer; Another common approach is to merge the platform layer into the application layer, thus defined as the perception layer, the network layer, and the application layer. The composition and corresponding relationship of each layer are as follows:

The sensing layer is usually executed by the terminal device, which, like the terminal nerve, enables the intelligent network and the central control system to sense the terminal state and execute commands. A sensor that is not independently addressed and is connected to the Internet of Things through a gateway, or to a device that has independent addressing and connectivity capabilities, is generally considered part of that device and exists as a peripheral device.

The main connection technology of the Internet of Things

The network layer is divided into two kinds, one is the connection between the gateway and the sensor, called the LAN connection, there are corresponding protocols; One is to directly access and connect the central control platform or cloud platform of the data center, that is, WAN connection. At present, there are many kinds of access technologies for WAN, but no matter what kind of access technology, it needs to establish the dialogue through the standard transport protocol. The mainstream MQTT is developed by IBM and is based on the TCP IP protocol.

It can be seen that the main LAN network access and WAN access information technology has advantages and disadvantages in different development indicators such as speed and power consumption:

It can be seen that the connection protocols of LAN and wans respectively have high (> 10M) and low (> 1M) speed, high speed usually means high power consumption. These two characteristics determine that different connection protocols have different purposes. High-speed protocols are often used in external power scenarios that require a lot of video or image interaction or other large amounts of data; Low-speed protocols are commonly used in battery-powered, low-information density sensor data reading, automatic device control, and other scenarios.