Internet of Things "unknown" secret

Smart home networks generally contain two layers of meaning. The first means that all kinds of information terminals and various household appliances in the home can be automatically discovered, shared intelligently, and coordinated through smart home networks. For example, a smart phone can be used to remotely control all household appliances without the need for an overnight search for televisions, set-top boxes, and air conditioners; even future smart kitchens such as cookers, refrigerators, range hoods, and electric ovens. Can control each other. The second is to extend public network functions and applications to homes through home gateways, connect various information terminals through the network, provide integrated voice, data, multimedia, control and management functions, and realize information within the home terminal and the external public network. Full circulation and sharing. In other words, the home appliances are connected to the Internet or the Internet of Things through a gateway, so that a remote network can be used to control, regulate and monitor various home appliances using a tablet or smart phone, such as a microwave oven, a washing machine, and an air conditioner. , lighting, electric curtains, temperature and humidity controllers, air volume regulators, etc.

Internet of Things

The Internet of Things is a network for the purpose of perceiving human beings, people and things and things and things. Its outstanding feature is to obtain various kinds of information in the physical world through various sensing methods, combine information transmission and interaction with the Internet, mobile communication networks, etc., and then use intelligent computing technology to analyze and process information, thereby enhancing people’s understanding of the material world. Perceived ability to achieve intelligent decision-making and control.

1 ) The perception layer. Comprehensive perception is a feature of the Internet of Things technology. It uses radio frequency identification (RFID), two-dimensional codes, GPS, cameras, sensors, etc. to capture and sense the objects at any time and place. Obtain. In smart homes, the perceived objects are divided into the family environment in which people live and the people themselves. The eight subsystems in the traditional smart home can be used as the implementation device of the perception layer. In addition, the Internet of Things smart home system also applies a number of typical sensory technologies, such as wireless temperature and humidity sensors, wireless door sensor, window magnetic, wireless gas leak sensors.

2) Network layer . The network layer in the Internet of Things includes a converged network formed by various communication networks and the Internet. In addition, it also includes the intelligent processing of massive information such as the home IoT management center, information center, cloud computing platform, and expert system. In the smart home, the network layer must not only have the ability to operate the network, but also improve the ability to operate information, such as the application of the database. In the network layer, especially the two issues of reliable transmission and intelligent processing are handled.

3) Application layer. The application layer is a set of solutions that combine the Internet of Things technology and smart home professional technology to achieve intelligent home applications. The IoT finally realizes the deep integration of information technology and traditional homes through the application layer. This is mainly reflected in smart grid applications, home medical applications, multimedia entertainment applications, home security applications, and home control applications. In addition, the application layer also provides home service providers with third-party interfaces to provide various services that facilitate people's life.

At present, strictly speaking, the application of the Internet of Things in smart homes is still mainly focused on the application of the perception layer. It can only be said that a certain technology in the Internet of Things has been applied. It is a truly ubiquitous Internet of Things. There is still a long way to go in the home, especially in the integration of the application layer. It also requires in-depth cooperation among multiple industries to provide a full range of smart homes.

cloud computing

The cloud is a metaphor for the Internet and the Internet. Cloud computing is an Internet-based computing method. Its computing power is 10 trillion times per second. Through cloud computing, shared hardware and software resources and information can be provided on demand to computers and other devices. For example, users can access data centers through desktop computers, notebook computers, tablet computers, smart phones, or other smart terminals, according to their own needs. Perform calculations.

Typical cloud computing providers often provide general-purpose network service applications that can be accessed through software such as browsers or other Web services, while software and data are stored on the server. Cloud computing services typically provide a common online business application accessed through a browser. Software and data can be stored in the data center.

Smart home is actually a home-use small-scale internet of things. It needs to pass through various types of sensors to collect relevant information, and through the analysis and feedback of these information, relevant functions can be realized. Therefore, the stability and reliability of smart homes are largely based on good hardware. Without storage devices with large enough capacity, information will be difficult to store, and even a large amount of data will be lost. Naturally, it is even more difficult. Targeted query analysis and calculations. Remote video surveillance and remote dialogue, for example, require a lot of capacity. If critical data is lost, it is very likely to cause great losses. The cloud is a low-cost virtual computing resource. Cloud computing centralizes these resources and manages it automatically. Users can apply for some resources anytime and anywhere, support the operation of various applications, and save a lot of maintenance work. Naturally, Can reduce costs, improve work efficiency, and obtain better services.

Therefore, in order to meet the various needs of smart homes, cloud computing has become the best partner for smart homes. Through cloud computing, building a cloud home, you can achieve more accurate and rapid control of smart home devices, and users get better At the same time, cloud services are also cheaper. For example, Lenovo Group’s launch of the Watchdog HD Network Camera is a cloud-based video service product. It incorporates cloud computing and wireless video technology, and stores all real-time video recordings on Lenovo's secure servers. Users can view everything that happened in the past. Even if someone unplugs the camera, they can see the saved video data. And the use of secure encryption used by online banking to protect video information, so that the saved video information is safe, private, and is unlikely to be seen by anyone else.