The wireless form is gradually becoming mainstream, and there is no doubt that the performance of this technology will become more and more perfect over time, and its application will become more and more complicated, Imagine you. In the future, without any “line†connection, in a freely mobile space, people can freely control the equipment in the home environment and carry out daily life. What a wonderful world.
For example, many consumers today have digital movies, TV shows, music, and photo libraries, and they are eager to access them from anywhere in the home via wireless devices. The wireless smart home approach not only supports multiple concurrent users and devices, but its superior features ensure quality of service, ensuring that all devices in the home provide a better user experience in real time while providing intelligent content management and publishing.
Through the above introduction, it can be seen that a new generation of wireless smart home network will establish a new experience and enjoyment for wireless home devices without the need for wiring and relative freedom. It has flexible networking, low cost, eliminates cumbersome work procedures such as slotting and wall penetration, and has low overall cost; strong mobility and strong expansion, which can get rid of the limitation of “lineâ€, within the set coverage, users Easy access to home equipment network systems.
To sum up, the wireless home network has the following advantages:
(1) Environmental awareness network
It has the ability to perceive the external environment and objects, and is the key to successfully realize the information interaction between “objects and things, people and things†in the future intelligent home life, and to connect the sensory information to the backbone of the perception network, which is the future. The nerve endings of a networked smart home environment.
(2) Wireless self-organizing network
It can realize wireless short-distance communication transmission, and the information is transmitted through self-organized networking. The wireless self-organizing network has the ability of self-management and self-repair.
(3) cost-effective
The wireless home mobile is flexible, expandable and free of disassembly. In addition, it has the characteristics of low cost and low power consumption, and conforms to the green home concept of “low carbon lifeâ€.
Domestic wireless technology standards are different, ZigBee technology is globally standardized:
In 2005, the Ministry of Information Industry approved the "E Jiajia" and "IGRS" smart home recommended standards, but they have not been well popularized. The various standards actually used by foreign and domestic manufacturers are diverse in the Chinese market and do not form the most mainstream and commonly used technical standards.
ZigBee is a set of technical standards related to networking, security and application software developed based on the IEEE802.15.4 wireless standard. IEEE 802.15.4 only defines the MAC layer and the physical layer protocol, while the ZigBee Alliance standardizes its network layer and application layer. The ZigBee Alliance has also developed a layer of security to ensure that such portable devices do not accidentally leak their identity, and that such long-distance transmissions over the network are not available to other nodes.
Nanjing IOT sensor adopts ZigBee wireless technology, which is easy to install and operate:
Most of the smart home products have problems of setting and operation, and there are many fancy and unnecessary functions. In many cases, the smart home system is more like a professional control system than a home appliance that ordinary people can operate. It is the key to the popularity of smart home systems to make the system easier to operate and more humane.
How to remove the above obstacles is the real popularity of smart homes? ZigBee technology provides us with a good solution.
ZigBee wireless technology is a short-range wireless network technology that emphasizes extremely low power consumption and low cost, and complies with the IEEE802.15.4 standard. It focuses on low-rate transmission control, large network capacity, short delay, and provides data integrity check. The encryption algorithm uses AES-128, and the network has strong scalability. The effective coverage is 10~75m, depending on the actual transmit power. Depending on the application mode, it can basically cover the ordinary home environment, and the communication frequency uses the 2.4GHz license-free band.
"You see, ZigBee wireless technology is good, as long as you hold a mobile phone, you can get a day to eat and drink, Lhasa sleep, smart home has brought me a lot of convenience and speed, I really can't think of it." With the development of the times, people have paid more attention to the safety, comfort and convenience of the living environment, and the concept of smart home has emerged. The smart home control system enables people to digitally control any electrical appliance in the home. It uses computer technology and network communication technology to organically combine various equipment related to home life to centrally manage and make home life more comfortable and safe. ,effective.
Source: Electromechanical online
Wonke Electric CO.,Ltd. , https://www.wkdq-electric.com