The Internet of Things industry is growing stronger. In 2015, the scale of China's Internet of Things market will exceed 750 billion yuan. In the next five years, the market size is expected to exceed the trillion yuan mark. Then, as the mainstream technology of the Internet of Things, Bluetooth, Wifi, ZigBee, what kind of competition or cooperation pattern will be formed?
China's Internet of Things market is huge
How big is the Internet of Things market in China? In terms of market size alone, in 2012, China’s Internet of Things market reached 365 billion yuan. According to predictions from several third-party organizations, the scale of China’s Internet of Things market will exceed 750 billion yuan in 2015. In the next five years, The market scale is expected to exceed the trillion-dollar mark. In the future, the compound annual growth rate of the Internet of Things industry will exceed 30%, and the prospect of the Internet of Things can be described as limitless.
Through the information sensing devices such as radio frequency identification, infrared sensors, global positioning systems, laser scanners, etc., the Internet of Things connects any items with the Internet according to the agreed protocol, and exchanges information and communication to realize intelligent identification, positioning, and A network concept for tracking, monitoring, and management. Here, we can simply understand it as the application of various functions through the connection of objects and objects.
So what are the ways in which things are connected? Two ways, one is wired connection, such as connecting your computer to the Internet through a network cable or connecting the camera to the monitoring platform through a coaxial cable; the second is the wireless connection method, for example, your mobile phone can be realized by wireless WIFI. Internet and so on.
The advantages of wired connection are mainly reflected in stability, reliability and transmission speed, but because of its physical connection, convenience and practicability are fatal injuries. With the evolution of wireless technology in terms of stability, reliability and speed, in the future IoT applications, it should be said that there is not much room for development of wired connections (and certainly will not disappear). In the current IoT applications, wireless transmission technology can be described as numerous, but in the down number, I believe that the most widely used and most potential applications are Bluetooth, Wifi and ZigBee. These three wireless transmission technologies are in the Internet of Things. In the application, the big drama of the Three Kingdoms is staged, then who will unite the world together?
The Three Kingdoms Killer: Bluetooth
Although in the field of mobile phones and computers, the application of Bluetooth is not universal, almost almost forgotten, but like the Shuhan of the Three Kingdoms era, Bluetooth's bloodlines are noble, never knowing but never give up, constantly expanding the territory, nowadays It can be said that from version 1.0 to the latest version 4.2, the function is also more and more powerful. In version 4.2, Bluetooth greatly enhances the application characteristics of the Internet of Things, and can realize many new features such as IP connection and gateway setting.
Compared with WIFI, the advantage of Bluetooth is mainly reflected in power consumption and security. Compared with the maximum power consumption of WIFI of 50 mA, the power consumption of Bluetooth maximum 20 mA is much smaller, but the disadvantages in transmission speed and distance are also obvious. The maximum transmission speed and the longest transmission distance are 1 Mbps and 100 m, respectively.
Cao Wei of the Three Kingdoms: WIFI
WIFI wireless technology can be described as extremely wide in the current application. It can connect terminals such as personal computers, routers, and handheld devices wirelessly. WIFI is a high-frequency radio signal. It has the widest range of users and masses. Like the Wei Dynasty in the Three Kingdoms era, there are many people, strong and powerful.
In terms of technology, the main advantage of WIFI is reflected in transmission speed and transmission distance. Its maximum transmission distance can reach 300m, the maximum transmission speed can reach 300Mbps, and the weak point is reflected in power consumption. Its maximum power consumption is 50mA.
The Three Kingdoms Killing Dong Wu: ZigBee
Compared with WIFI and Bluetooth, ZigBee can be regarded as a new expensive. This new style is graceful and promising. Just like the Soochow in the Three Kingdoms, it is very young and ambitious! As a wireless communication technology, ZigBee is mainly used in the field of smart homes, and has a good cooperative relationship with many smart home equipment vendors.
As a short-range wireless communication technology, ZigBee's advantages are low complexity, self-organization, high security, low power consumption. In addition, ZigBee also has networking and routing features, which can be easily embedded in various devices. In terms of power consumption performance, ZigBee performs best among the three, and security is between WIFI and Bluetooth.
Who will "unify" the world?
It can be seen that the three wireless transmission technologies of Bluetooth, Wifi and ZigBee are based on their respective technical advantages, and thus play a role in the different applications of the Internet of Things, but their competition relationship is unquestionable. The so-called world trend, the long-term must be combined. So in Bluetooth, Wifi and ZigBee, as for which wireless transmission technology will "unify" the world, or there will be a fourth kind of wireless technology to participate in the world, this is waiting for the smart home to grow to give an answer.
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