Wireless technology is the key to intelligent connectivity
In 2014, CeBIT was divided into eight segments: Enterprise Resource Planning and Data Analysis, Enterprise Content Management, Network and Mobile Device Solutions, IT Services, Security, Communications and Networks, Infrastructure and Data Centers, and Research and Innovation. With the popularity of the network environment, smart home applications with smartphones and tablets as the control center have become an important development direction. It covers intelligent air conditioners, refrigerators, washing machines and other appliances that are connected to the network. Security monitoring remote controls, switches, sockets, LED lights, and video door mirrors, smoke detectors, thermostats, curtains, and many small ones. Wear the device.
Connect all possible everything to the network through wireless technology, enabling data connectivity and control anytime, anywhere, based on the slogan of “smartâ€, such as smart home, smart grid, smart logistics and even smart city. . In CeBIT in 2014, taking the application of smart home as an example, you can see that various wireless technologies such as Bluetooth, Zigbee, Z-wave, standard WiFi, and embedded low-power WiFi are in a state of contending.
Due to its low power consumption and the natural interconnection with smartphones, Bluetooth technology plays an important role in many wearable devices and wireless audio applications. Through mobile phone relay, Bluetooth devices can also link to the Internet for remote communication. Zigbee (based on IEEE802.15.4 standard) as a wireless personal area network technology, with its low-speed, low-power and wireless ad hoc network features, widely used in wireless meter reading, building control and other fields. Z-wave is a wireless networking specification (private agreement) led by the Danish company Zensys. The Z-wave Alliance has more than 160 companies worldwide and is widely used in home energy control and lighting.
WiFi (based on IEEE802.11b/g/n protocol) is one of the most widely used wireless technologies in the world. It has fast transmission speed and wide coverage. Unlike zigbee and z-wave technologies, WiFi can be used with smartphones and tablets. Directly connected, and because of the current high level of WiFi in the home, WiFi devices have the ability to seamlessly connect to the Internet. However, the traditional WiFi products have higher requirements on the hardware and system of the device, and require a relatively powerful CPU and operating system support to operate, and the power consumption is large, and the startup time is long (nearly 30 seconds), which limits the application of the WiFi technology in the Internet of Things.
The embedded low-power WiFi technology integrates the embedded operating system and the network protocol required for WiFi communication, which can get rid of the limitation of the upper computer (self-contained system), the startup time is less than 1 second, and the standby power consumption can reach micro-amp. level. At the same time, it retains the advantages of fast transmission rate and seamless connection with smart phones and the Internet, so it shows great competitiveness in IoT applications.
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