What is Internet of Things

The Internet of Things (English: Internet of Things, abbreviated IoT) originated in the media field. It is an information carrier such as the Internet and traditional telecommunications networks, allowing all ordinary objects that can perform independent functions to achieve interconnection and interoperability.

On the Internet of Things, everyone can use electronic tags to connect real objects to the Internet, and their specific locations can be found on the Internet of Things. Through the Internet of Things, central computers can be used to centrally manage and control machines, equipment, and personnel. It can also remotely control home equipment and cars, search locations, prevent items from being stolen, etc., similar to automated control systems. At the same time, by collecting these small things The data can eventually be aggregated into big data, including major changes in society such as redesigning roads to reduce car accidents, urban renewal, disaster prediction and crime prevention, epidemic control, etc., to realize the connection of things and things. (Recommended learning: PHP video tutorial)

The Internet of Things digitizes the real world and has a wide range of applications. The Internet of Things brings dispersed information closer and integrates the digital information of things. The application fields of the Internet of Things mainly include the following areas: transportation and logistics, industrial manufacturing, health care, and smart environments (home, office, factory). , personal and social fields, etc., it has very broad market and application prospects.

Definition

The Internet of Things (IoT, Internet of things) is the "Internet where everything is connected". It is an extended and expanded network based on the Internet. A huge network is formed by combining various information sensing devices with the Internet to realize the interconnection of people, machines and things at any time and anywhere.

Ashton's original definition is: "Today's computers and the Internet are almost entirely dependent on humans to provide information. There are approximately 50 petabytes (petabyte is 1,024 terabytes) of data on the Internet, most of which was originally created by People acquire and create them by typing, recording, taking photos or scanning barcodes. The traditional Internet blueprint ignores the largest and most important nodes, people. The problem is that people’s time, energy and accuracy are all Limited, they are not suitable for intercepting information from the real world. This is a big problem. We live in the material world, and we cannot eat virtual information as food or burn it as firewood. Ideas and information are important, but The physical world is more essential. Today's information technology is so dependent on human-generated information that our computers understand thoughts better than matter. If computers can understand all kinds of information that can be obtained in the physical world without our help, , we will be able to track and measure those substances, reducing waste, loss and consumption. We will know when items need to be replaced, repaired or recalled, whether they are new or have expired. The Internet of Things has the potential to change the world, just like the Internet The same, even more profound."

Origin

Peter T. Lewis proposed this concept in 1985 [please refer to the source]. Bill Gates mentioned the Internet of Things in his book "The Road to the Future" published in 1995. In 1998, MIT proposed the concept of the Internet of Things, which was then called the EPC system. In 1999, Auto-ID proposed the concept of the Internet of Things in terms of item encoding (RFID) technology. On November 17, 2005, at the World Information Summit, the International Telecommunications Union released the "ITU Internet Report 2005: Internet of Things", which pointed out the advent of the "Internet of Things" era.

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