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This article mainly explains "what are the basic characteristics of the Internet of things". Interested friends might as well take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what are the basic characteristics of the Internet of things"?

The Internet of things is the third information technology revolution; the Internet of things, that is, the Internet of everything, is an extended and expanded network based on the Internet, which combines all kinds of information sensing devices with the network to form a huge network. to achieve the interconnection of people, machines and things at any time, anywhere.

Operating environment of this article: Windows7 system, DELL G3 computer

How many information technology revolutions is the Internet of things?

In 1999, the concept of Internet of things was formally put forward, and it is considered to be the third information technology revolution.

Define

The Internet of things (IoT, Internet of things), that is, the Internet of everything, is an extension and expansion of the Internet. It combines a variety of information sensing devices with the network to form a huge network to achieve the interconnection of people, machines and things at any time and place.

The Internet of things is an important part of the new generation of information technology, the IT industry is also known as: pan-Internet, which means that things are connected, all things are connected. As a result, "the Internet of things is the Internet connected to things." This has two meanings: first, the core and foundation of the Internet of things is still the Internet, which is an extension and expansion of the network on the basis of the Internet; second, its client extends and extends to any object to exchange information and communicate. Therefore, the definition of the Internet of things is through radio frequency identification, infrared sensors, global positioning system, laser scanners and other information sensing devices, according to the agreed protocol, connect any object to the Internet for information exchange and communication, in order to achieve intelligent identification, positioning, tracking, monitoring and management of a network.

Origin

The concept of the Internet of things first appeared in Bill Gates' book the Road to the Future in 1995. In the Road to the Future, Bill Gates already mentioned the concept of the Internet of things, but it was limited to the development of wireless networks, hardware and sensor devices at that time. It didn't attract the attention of the world.

In 1998, the Massachusetts Institute of Technology creatively put forward the idea of "Internet of things", which was then called EPC system.

In 1999, American Auto-ID first put forward the concept of "Internet of things", which is mainly based on object coding, RFID technology and Internet. In the past, the Internet of things was called a sensor network in China. The Chinese Academy of Sciences started the research on the sensor network as early as 1999, and has made some scientific research achievements and established some applicable sensor networks. In the same year, the International Conference on Mobile Computing and Internet held in the United States proposed that "the sensor network is another development opportunity for mankind in the next century."

In 2003, the American Technical Review proposed that sensor network technology will be the top ten technologies that will change people's lives in the future.

On November 17, 2005, at the World Summit on the Information Society (WSIS) in Tunis, the International Telecommunication Union (ITU) issued "ITU Internet report 2005: Internet of things", which formally put forward the concept of "Internet of things". The report points out that the ubiquitous "Internet of things" communication era is coming, and all objects in the world, from tires to toothbrushes, from houses to paper towels, can be actively exchanged through the Internet. Radio frequency identification technology (RFID), sensor technology, nanotechnology and intelligent embedding technology will be more widely used and concerned.

Features

The basic characteristics of the Internet of things from the perspective of communication objects and processes, the information interaction between things and things, people and things is the core of the Internet of things. The basic characteristics of the Internet of things can be summarized as overall perception, reliable transmission and intelligent processing.

Global perception-can use radio frequency identification, QR codes, smart sensors and other sensing devices to perceive and obtain all kinds of information of objects.

Reliable transmission-through the integration of the Internet and wireless networks, the information of objects can be transmitted real-time and accurately, so that information can be exchanged and shared.

Intelligent processing-use a variety of intelligent technologies to analyze and process the perceived and transmitted data and information, so as to realize the intelligence of monitoring and control. According to the above characteristics of the Internet of things, combined with the point of view of information science, around the flow process of information, we can sum up the functions of the Internet of things in processing information:

(1) the function of obtaining information. It mainly refers to the perception and recognition of information, which refers to the perception and sensitivity to the attribute state of things and the way they change; the identification of information means that the state of things can be expressed in a certain way. (2) the function of transmitting information. It is mainly the link of sending, transmitting and receiving information, and finally the task of transmitting the state information of things and their changes from one point in time (or space) to another, which is often called the communication process. (3) the function of processing information. Refers to the information processing process, the use of existing information or perceived information to produce new information, is actually a decision-making process. (4) the function of applying effect information. Refers to the process in which information finally comes into play, there are many forms of expression, it is more important to always make the object in a pre-designed state by adjusting the state of the object and its transformation.

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