What technology provides the construction of smart city in essence

Internet of Things Technology

1. Definition of Internet of Things:

The Internet of Things (IOT) is a network that connects any item with the Internet through radio frequency identification (RFID), infrared sensors, global positioning system, laser scanner, gas sensors and other information sensing devices, and carries out information exchange and communication according to the agreement, so as to realize intelligent identification, location, tracking, monitoring and management. In short, the Internet of Things is the Internet of Things.

The Internet of Things (IOT) is a network of communication between people and things, between things and things, and a perception technology of intelligent cities. In the field of integration of industrialization and industrialization, Internet of Things technology has been applied in product informatization, production and manufacturing, management, energy saving and emission reduction, safety production and other fields. In the field of e-government, Internet of Things (IOT) technology has been initially applied to the competent government departments such as public security, land, environmental protection, transportation, customs, customs, quality inspection, security supervision, forestry and so on.

What technology provides the construction of smart city in essence

2. The technical framework of the Internet of Things:

The Internet of Things is mainly composed of perception layer, network layer and application layer.

1) The sensing layer consists of various sensors, including temperature and humidity sensors, two-dimensional code labels, RFID tags and reader, camera, infrared, GPS and other sensing terminals. The perception layer is the source of identifying objects and collecting information in the Internet of Things.

2) The network layer is composed of various networks, including the Internet, radio and television network, network management system and cloud computing platform. It is the center of the whole Internet of Things and is responsible for transmitting and processing the information acquired by the perception layer.

3) Application layer is the interface between Internet of Things and users. It combines with industry requirements to realize intelligent application of Internet of Things.

3. Key technologies of the Internet of Things:

There are four key technologies in the application of the Internet of Things:

1) Sensor technology, which is also the key technology in computer application. As we all know, up to now, most computers deal with digital signals. Since the computer came into being, sensors have been required to convert analog signals into digital signals, so that computers can process them.

2) RFID tag is also a kind of sensor technology. RFID technology is a combination of wireless radio frequency technology and embedded technology. RFID has broad application prospects in automatic identification and goods logistics management.

3) Embedded system technology is a complex technology which integrates computer hardware and software, sensor technology, integrated circuit technology and electronic application technology. After decades of evolution, intelligent terminal products featuring embedded systems can be seen everywhere; as small as MP3 around people, as large as Aerospace Satellite systems.

Embedded systems are changing people's lives and promoting the development of industrial production and national defense industry. If we use the Internet of Things as a simple analogy of the human body, sensors are equivalent to human eyes, nose, skin and other senses, the network is the nervous system used to transmit information, embedded system is the human brain, after receiving information to classify and process. This example vividly describes the position and role of sensors and embedded systems in the Internet of Things.

4) M2M: It transfers data from one terminal to another. It is a dialogue between machines.

4. Application of Internet of Things Technology in Smart City

At present, the Internet of Things technology has been applied in product informatization, production and manufacturing, management, energy saving and emission reduction, safety production and other fields. It has been initially applied in public security, land, environmental protection, transportation, customs, customs, quality inspection, security supervision, forestry and other government departments, and achieved good results.

1) Product informationization: In the automobile, household appliances, construction machinery and ship industries, the application of Internet of Things technology has improved the level of product intelligence.

2) Application in the field of production and manufacturing: application in production line process detection, real-time parameter acquisition, production equipment and product monitoring management, etc.

3) Application in the field of business management: application in logistics management, production management, etc.

4) In energy saving and emission reduction applications: mainly in iron and steel, non-ferrous metals, electricity, chemical industry, textile, paper and other high energy consumption, high pollution industries.

5) Application in the field of safety production: mainly in coal, iron and steel, non-ferrous and other industries to ensure safe production of important technical means, the use of Internet of Things technology to mine underground man, machine, environment monitoring

Cloud computing technology:

1. The definition of cloud computing technology:

According to the definition of the National Institute of Standards and Technology (NIST), cloud computing is a shared pool model that can access configurable computing resources (such as networks, servers, storage, applications and services) anytime, anywhere and on demand through the network. This pool can quickly configure and release resources through the lowest cost of management or service providers'meetings.

2. Characteristics of Cloud Computing Technology

1) Fast elasticity

Elasticity refers to the ability to use resources scalably according to needs. For consumers, the cloud seems infinite, and consumers can buy computing resources as needed.

2) Measurement services

In measurement services, cloud service providers control and monitor all aspects of cloud services. This is critical for billing, access control, resource optimization, capacity planning and other tasks.

3) On-demand self-service

This means that consumers can use cloud services as needed without human-computer interaction with cloud service providers.

4) ubiquitous network access

Ubiquitous network access means that users can access the capabilities of cloud service providers through the network.

3. The main types of cloud computing:

1) Classification by resource type:

Cloud computing can be considered a package

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