This article will focus on how to know RFID and NFC; what are the differences between them and their applications.
The so-called RFID technology is actually radio frequency technology ( Radio Frequency Identification, RFID) for short, the technology is mainly with the help of magnetic strip field or electromagnetic field principle, through the wireless radio frequency way to achieve two-way communication between devices, so as to achieve the function of exchanging data, the biggest feature of the technology is that no contact can be obtained The other party’s information, ETC is one of the more typical application scenarios, RFID technology commonly used radio wave frequency band mainly includes: low frequency, high frequency, ultra-high frequency and microwave frequency band.
NFC (Near Field Communication), or Near Field Communication, is a contactless identification and interconnection technology that enables near-field wireless communication between mobile devices, consumer electronics, and other devices. NFC Tag enables functions such as mobile payment, identity authentication, transportation card recharge, transportation card balance inquiry, data transfer, application sharing, etc.
What is the difference between RFID and NFC?
Generally speaking, the RFID and NFC technology is essential in the Internet of Things system of technology two, the two origins are closely related, similar function, then RFID and NFC technology what are the difference? Today, when the billion education will solve these problems, I hope the partners can give me a comment.
RFID belongs to the automatic identification technology, and its working principle is the reader and the tag between the non-contact data communication, to achieve the purpose of identifying the target, in short, through the wireless radio frequency way for non-contact two-way data communication.
NFC is the integration of RFID and interoperability technology that evolved from a short-range high-frequency wireless communication technology, mainly for mobile terminals such as cell phones, smart watches, etc. to provide electronic payment, identity authentication, data interaction, and other mobile functions.
Differences between RFID and NFC
1、Working frequency
RFID operates at three frequencies, namely low frequency(125 kHz), high frequency (13.56 MHz), and UHF(850-960 Mhz).
There is only one operating frequency for NFC, which is 13.56MHZ.
2、Working distance
Both are short-range wireless communication technology, but RFID because of its three operating frequencies, the working distance is a few centimeters to tens of meters ranging; NFC theoretical working distance of 0-20 cm, but most NFC products will adopt special power suppression technology, resulting in its working distance of only 0-10 cm.
3、Working mode
The reader and the contactless card in RFID exist independently and cannot switch modes.
NFC supports both read-write and card modes and can switch the working mode.
4、Point-to-point communication
RFID technology does not support peer-to-peer communication and allows for the rapid establishment of P2P (peer-to-peer) communication between Bluetooth devices.
NFC technology supports peer-to-peer communication.
5、Standard Protocols
The underlying communication protocol of NFC is fully compatible with the underlying communication standard of HF RFID, so NFC technology can also be used in the application area of HF RFID.
6、Application area
NFC technology is compatible with high-frequency RFID, so a wide range of applications, while RFID standards are more, unified more complex, and intelligent in special industries or special needs of the field on the use of the corresponding technical standards.
What are the practical application scenarios?
RFID animal management: the use of RFID animal ear tag reader to read animal ear tag, microchips do animal biological epidemic prevention management, slaughter back to the pen counting management, weighing management, growth monitoring management, nursery breeding management, etc., in the field of animal management applications, the establishment of the system, food safety monitoring to play an effective supervision and management work.
Industrial applications: Various production line management for production quality control and information collection, including food processing lines, manufacturing lines, warehouse material trucks, etc.
Common life applications: RFID self-service lending library, clothing RFID tags (mainly in the supply chain link), RFID electric car charging pile, RFID access control, ETC high-speed toll station.
NFC cell phone payment, cell phone swipe metro card/bus card, bank card, etc., wristband, etc., wireless charging.
In summary, despite of the differences between NFC and RFID technology, NFC technology, especially the underlying communication technology, is fully compatible with high-frequency RFID. Therefore, NFC technology can also be used in the application area of HF RFID.
