Following the series of articles on the protocols that electrical and electronic engineers need to know when designing IoT applications, today plc247.com and you continue to learn about: NFC. This is a relatively “new” communication protocol for design / solution engineers.
What is NFC?
NFC (Near-Field Communications) is a technology that connects wirelessly in a short range within a distance of 4 cm. This technology uses magnetic induction to make connections between devices (smartphones, tablets, speakers, headphones …) when there is direct contact (touch).
What is NFC used for?
When both devices have NFC connectivity, you can touch them to activate this feature and quickly transfer files including contacts, music, photos, videos, applications or website addresses … In developed countries, NFC is also considered an electronic wallet when it can be paid online, conveniently and quickly.
In addition to helping transmit data as above, NFC also extends to the use such as you have to have a NFC tag on the table in the cafe, this card has pre-installed wifi, information of the shop … at this time you Get this NFC-enabled phone, it will turn on all the features that are built into that card without having to ask for staff. Or more advanced, maybe later when shopping in a large supermarket, swipe the NFC of your phone to pay money always.
-The specification of the NFC protocol:
+ Standard: ISO/IEC 18000-3
+ Frequency: 13.56MHz (ISM)
+ Range: 10cm
+ Data Rates: 100–420kbps