The prospect of smart home is widely recognized, but many problems in the development process have hindered the progress of smart home. The experiment that was done on the scene of the past 315 nights must be sure that you still have the impression: everyone joins a free public WIFI, the phone connects to the on-site wireless network signal, and opens the consumer software. Then amazingly found that orders and consumption records are all extracted! Including your phone number, home address, ID number, bank card number, and even what movie you watched in a few days... are also missing. The use of WiFi has become commonplace, especially for smart homes, because wireless communication technology lacks a unified protocol and has to use WiFi, but the phenomenon of easy disclosure of privacy has been criticized by the industry for a long time.
The emergence of ZigBee has made the industry happy because it is an emerging short-range, low-complexity, low-power, low-data-rate, low-cost wireless network technology. It is a kind of wireless tag technology and Bluetooth. Technical proposal between the two, mainly used for short-range wireless connections.
Throughout the development of smart homes, we can easily find that the development of smart homes from wired to wireless is a huge leap. The application of wireless communication technology to smart homes not only changes the first step of smart home in the home, but also avoids the complicated opening of walls and holes in the installation. It is possible for families who want to use smart home system products after the decoration is completed. And greatly simplify the connection and scheduling mode between product devices, the advantages and disadvantages of wireless communication technology also directly affect the stability and security of the entire smart home system.
Limited wired technology, wireless Zigbee hot
In addition to X-10 and PLC-BUS, there is almost no communication technology specifically developed for the smart home industry . What is interesting is that X-10 power line carrier technology has been successfully applied and home automation as early as the 1970s. In the field, it was introduced and promoted in our country around 2000. However, the market situation has been difficult to open. The main reason why it is difficult to widely promote is that in addition to the mismatch between equipment costs and people's needs, it also lies in various problems of the technology itself. Therefore, although power line carrier technology has been produced very early, people are still looking for suitable wired technologies to develop smart home products from other fields, and even create proprietary technology agreements for product development. Of course, because various wired technologies have their advantages. Disadvantages, so it has always been a battle for the world, and perhaps because of this, the smart home industry has been ignorant, no breakthrough progress, the industry has also been small.
Wireless technology, like the development of voice communication technology, from the initial telegram to the wired telephone that realizes real-time voice communication; then to the wireless "big brother" and GSM mobile phone, it is now out of control and now "hands-on". Starting from the weakest RF433/315MHz and other point-to-point technologies, we are trying to find a stable and inexpensive wireless smart home technology solution, by comparing RF technology, Bluetooth, Wi-Fi, Zigbee, Z-wave and other five wireless technologies. Later, we found that Zigbee technology flexible networking, intelligent network repair, mutual relay, low power consumption, low cost and other features are the best wireless communication system that can meet the characteristics of stable, flexible and safe performance of smart home systems. technology.
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