At present, “wireless replacement of cable†has become an irreversible trend on a global scale, and this trend is more obvious in the field of home Internet of Things. It can be said that home automation, also known as " smart home ", has become an arena for advanced wireless technology. Different companies have adopted different technical solutions, and the effects are also very different. The most popular in the smart home industry are four wireless technologies, namely WiFi, Z-Wave, ZigBee, and SmartRoom. Among them, WiFi technology and ZigBee are the two most worthy of competition.
The advantage of WiFi technology is that the technology research and development threshold is low and the product cost is low. Usually, a college graduate completes the development of a WiFi item in about 30 days. Due to the difficulty in technology development, many start-ups develop smart home products based on WiFi, but their shortcomings are also obvious.
The biggest problem with WiFi is that security is very low, the wireless stability of the product is also poor, and the user experience is not good. Recently, foreign media reported that smart home products of companies such as Belkin in the United States were easily attacked by hackers. CCTV recently reported that US hackers have demonstrated how to use the Snoopy unmanned remote control aircraft to easily obtain all the information of users who turn on WiFi-enabled mobile phones.
It's hard to imagine that if your neighbor can easily get all the information about your home, you can know if someone in your home, whether you sleep, or even what film you are watching. He knows everything, how can you sleep peacefully? The security of WiFi has become a lingering shadow in the smart home field.
The high power consumption of WiFi is also a great weakness, which also leads to its limited application in the smart home field. Due to its high power consumption, WiFi will not be used in products such as smart door locks, infrared forwarding controllers, and various sensors, but smart door locks are one of the indispensable products for smart homes , while temperature and humidity sensors, lighting Sensors, smoke detectors and other sensors are also an essential part of smart home systems .
WiFi has low networking capabilities and limited expansion space. At present, the actual size of the WiFi network generally does not exceed 16 devices, and the number of switches, lights, and home appliances in the ordinary home has far exceeded 16. The number of devices that can be connected to the smart home system based on WiFi technology is very limited, and the future development Space is limited.
Compared to WiFi technology, the advantages of ZigBee technology are very obvious. ZigBee technology has accumulated a lot of valuable experience in the industrial field. As we all know, the requirements of the industrial field are usually much higher than the civilian field, and the ZigBee technology is born in the industrial environment with complex application environment and has been sold in the market for a long time in the world. test.
　　 ZigBee technology has several advantages:
High security. The security of ZigBee technology stems from its systematic design. So far, ZigBee technology has not cracked a precedent in the world, and wireless technologies such as WiFi, Bluetooth and Z-Wave have frequent security incidents. This shows its security position in the field of short-range wireless communications.
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