RF and ZigBee: two major communication protocols for smart home
If gateway is the heart of smart home, and equipment is the body of smart home, data flow is blood. There is no doubt that transport protocol is the connection of all blood vessels. The existing two communication protocol — — RFID (radio frequency identification) and ZigBee (ZigBee protocol) have been ported to the smart industry from the original Home Furnishing field, then this two protocols come from, and why the fight, please attention it down!
Based on the Internet of things, the traditional telecommunication network makes the general information interconnected to all the physical objects that can be addressed independently. The popular point is the wireless induction protocol which is advanced in order to eliminate bar code scanning. RFID has attracted much attention because of its long distance reading, high storage capacity and so on. It can not only help a company to substantially improve the efficiency of goods and information management, but also enable sales enterprises and manufacturing enterprises to connect to each other, so that they can more accurately receive feedback information, control demand information and optimize the entire supply chain. It is applied to the toll station, the logistics industry, the library management system and so on.
ZigBee: ZigBee protocol:
Why does the purplish bee agreement call ZigBee? It comes from the eight character dance of bees. Bees (bee) are &ldquo by flying and &ldquo, buzzing ” (Zig) wobbling wings; dance ” to transmit information about the orientation of pollen with their partners, and the way of ZigBee protocol is similar to the name of ZigBee. It is a low power local area network protocol based on IEEE802.15.4 standard. This protocol is a short distance and low power wireless communication technology. It was originally designed as an intelligent mechanical control solution for modern chemical plants.
RF and ZigBee for
RFID technology is intended to logistics management more efficient, while ZigBee is determined to optimize plant coordination, but because of its own advantages in intelligent communication, Home Furnishing today they have taken away from their original industry into intelligent Home Furnishing war, the advantage of RFID technology is very obvious, the identification zone based on the demand of logistics growth has the advantage of long identification distance, ultra wide, penetrating in diffraction capability makes its communication ability strong and stable signal, in the early development of intelligent Home Furnishing, instruction distribution technology is not mature for large amounts of data from the RFID era, the chain does become intelligent Home Furnishing only choice, but the problem is also very obvious expensive communication cost, energy consumption and large tracking, interference and long wavelength, so that the technology is not only difficult to enter the ordinary 100 Family name, more difficult to enter the complex signal high-rise residential area. The stunning appearance of the ZigBee agreement seems to have found a way for the future of the smart home.
But the higher ZigBee technology development and application of the threshold, difficult to develop, no technical strength of enterprises can not get involved, intelligent systems abroad are Home Furnishing trying to use this technology, currently only Haier, millet and a few other companies take this technology to the intelligent Home Furnishing, but also to achieve the intelligent and systematic functions, very comprehensive. High security of ZigBee technology, the design of its safety due to the system of using AES encryption (Advanced Encryption System), strict degree equivalent to 12 times the bank card encryption technology; secondly, ZigBee adopts honeycomb structure network, each device can not only through the multiple directions and guarantee the stability of the network gateway communication; each device also has wireless signal relay function, can transmit information to the wireless communication relay distance to 1000 meters away. In addition, the network capacity theory of nodes is 65300, can meet the demand of home network coverage, even the intelligent community, intelligent buildings, need only 1 hosts can achieve full coverage; finally, ZigBee has the capability of two-way communication, not only can send commands to the equipment, and equipment will also perform state and relevant data feedback back. In addition, ZigBee has a very low power consumption design that can be fully battery powered. In theory, a battery can be used for more than 2 years.