RFID (radio frequency identification) is an information identification technology based on radio. It can complete non-contact automatic identification without establishing mechanical or optical contact between the identification system and specific targets. How to quickly understand RFID technology for beginners? The following five questions can get you started quickly.
Question 1: how does RFID work?
Generally speaking, RFID system includes three parts: electronic tag, RFID reader, and data management system. When the tag enters the magnetic field, if it receives the special RF signal sent by the reader writer, it can send the information stored in the chip with the energy obtained by the induced current (passive tag), or actively send the signal of a certain frequency (active tag). The reader writer can read and identify the electronic data stored in the electronic tag without contact, and send the data to the computer host data management system for processing, So as to achieve the purpose of automatic object recognition.
Question 2: what are the advantages of RFID?
Compared with the traditional barcode recognition method, RFID has obvious advantages.
1. Fast scanning, multiple RFID tags can be recognized and read by readers and writers at the same time.
2. It is not affected by shape and size, and can be flexibly applied to different industries.
3. With high reuse rate, RFID tags can repeatedly add, modify and delete internal data.
4. With strong penetrability, RFID can penetrate non-metallic materials such as wood, plastic, paper, etc.
5. It is durable, and RFID has strong resistance to oil, water and chemicals.
6. Large data capacity. The maximum capacity of RFID tag is megabytes, which is much larger than barcode.
7. Safe and reliable. RFID data is password protected and is not easy to be forged and changed.
Question 3: what is the relationship between RFID and the Internet of things?
The Internet of things refers to a network that connects any object with the Internet through radio frequency identification (RFID), sensors, positioning systems and other information sensing devices in accordance with the agreed protocol for information exchange and communication, so as to realize intelligent identification, positioning, tracking, monitoring and management. Therefore, it can be understood that RFID is its bottom sensing layer, which is used for the data identification and collection of items.
RFID combines Internet, mobile communication and other technologies to transmit data to various information systems, so as to realize the interconnection between people and things, and between things. RFID makes the interconnection of everything no longer a dream.
Question 4: what are the application fields of RFID?
1. Anti counterfeiting: used for the anti-counterfeiting of valuable commodities (such as jewelry, tobacco and alcohol, high-end cosmetics, etc.) and tickets and important documents.
2. Military: used for identification and tracking of guns, ammunition, materials, trucks, personnel, etc.
3. Asset management: it is used for the management of all kinds of important assets (large quantity, valuable, highly similar or dangerous goods, etc).
4. Identification: it is mainly used for ID card, student card, e-passport and other electronic documents.
5. Animal identification: it is used for the identification and management of livestock, training animals, pets, etc.
6. Transportation: it is used for free parking at high-speed entrances and exits, bus operation hub management, taxi control, railway vehicle identification, etc.
7. Automobile: mainly used for manufacturing, positioning, anti-theft and identification of car keys.
8. Aviation: mainly used for manufacturing, passenger tickets, luggage and parcel tracking.
9. Medical treatment: mainly used for medical device management, patient identification, infant theft prevention.
10. Manufacturing: mainly used for real-time monitoring and quality tracking of automated production data.
11. Clothing industry: mainly used for automatic production, brand, single product, supply and marketing channels and inventory management.
12. Food: mainly used for the management of vegetables, fruits, fresh food and other commodities with high freshness.
13. Logistics: used for cargo tracking, information collection, warehouse management, port application, postal service, express delivery, etc. in the process of logistics transportation.
14. Retail industry: it is mainly used for real-time statistics, replenishment and theft prevention of the data of goods sold.
15. Book management: mainly used in book system management of bookstores, libraries and publishing houses.
16. Others.
Question 5: is RFID secure?
Generally speaking, the connection between the reader writer and the background database system is safe and reliable, but the data between the reader writer and the tag may have risks in confidentiality, integrity, availability and non repudiation. The tag data format and stored information of the RFID system can be encrypted, and the special processing technology can be used to improve the forgery cost of the tag. In addition, ensure that the recognizable reading range between readers and writers does not overlap as much as possible, and solve the collision problem by means of channel allocation, power control, time slot allocation and so on.
OPRFID Technology Online Website:
Click links for more information about RFID technolgy:
http://www.barberlife.com/read-blog/20960
https://likabout.com/blogs/179203/Logistics-Link-Of-Rfid-Tag-System-Of-Cainiao-Group
