Voice assistant: The "full voice control" in science fiction movies is becoming a reality

Many people are familiar with "Xiaodu", "Tmall Genie" or "Xiao Ai Tongxue". These are not the names of pets, but magical voice assistants. They apply the artificial intelligence technology mentioned in the previous section and can communicate with people smoothly. In addition, they also apply the Internet of Things (IoT), which is an indispensable technology around us today.

Voice assistant intelligent control

In science fiction movies, we often see a virtual image appearing in a high-tech spaceship, and passengers can communicate with it to control various facilities in the spaceship. This is people's original fantasy about the Internet of Things. Now with the development of science and technology, science fiction is slowly becoming a reality, and the Internet of Things technology is becoming popular. In the latest technology, people can turn on and off various electrical appliances by communicating with voice assistants, and it seems that it is not far from realizing complete "voice control" in the movie.

So how does the voice assistant act as the hub of the Internet of Things to control everything in the local area network? This is where Bluetooth and NFC technology come into play.

Bluetooth technology - get rid of the "wire" system

Bluetooth technology is a wireless data transmission method. It is based on short-range wireless connection and establishes a communication environment for fixed or mobile devices. This is very similar to the wireless network we mentioned earlier, but its signal transmission range is shorter and its production cost is lower, which meets the practical application needs of most people. Students usually have Bluetooth-connected devices at home. For example, Bluetooth headphones can be used to listen to music without connecting the headphone cable, and Bluetooth mice can be used without connecting the mouse cable. Bluetooth technology has greatly gotten rid of the limitation that traditional digital products need to use "wires" to transmit data, making people's lives more convenient.

NFC communication technology - fast identification and contactless

Near Field Communication (NFC) is an emerging technology that allows electronic devices to transfer data without contact. This sounds a lot like Bluetooth, but the effective working range of Bluetooth is mostly no more than 20 meters, while the effective distance of NFC is very short, only 10 centimeters. In addition, NFC has an advantage over Bluetooth - it does not require power, and it sends data through a magnetic field.

NFC is widely used in our lives. Mobile phones with NFC function can act as bank cards. The payment process can be completed during the NFC touch process, making the use process safer. It can also be used as a bus or subway card, or even directly recharge the bus or subway card to avoid problems such as "forgetting to bring" and it is safer.

Bluetooth technology and NFC technology are both important components of the Internet of Things. They are gradually making our lives smarter and bringing scenes from science fiction movies into reality...

Origin of the name "Bluetooth"

In history, there was a man named Harald Blatand who unified the whole of Denmark. Later, through expansion and war, he conquered the whole of Denmark and Norway and became king.

The king liked to eat blueberries and his teeth were often blue, so he was nicknamed "Bluetooth". Later, when Bluetooth technology was invented, after discussion among industry organizations, it was decided to use the king's nickname to name this high technology.