RFID Technology by Comprehensive Introduction
RFID Technology by Comprehensive Introduction
2021-04-02
RFID Fundamental
RFID is the abbreviation of Radio Frequency Identification. It is often called inductive electronic chip or proximity card, proximity card, non-contact card, electronic label, electronic barcode, etc. RFID is an automatic identification technology, which uses radio frequency signals to achieve contactless (wireless) information transmission to achieve the purpose of automatically identifying target objects.

RFID technology can complete the collection and transmission of item information without manual intervention, and is known as one of the top ten important technologies in the 21st century.




Under normal circumstances, after the RFID electronic label enters the electromagnetic field emitted by the reader, the induced current obtained from the antenna is converted into the power supply of the chip after the booster circuit, and the energy obtained by the induced current is converted into digital through the RF front-end circuit The signal is sent to the logic control circuit for processing, and the information that needs to be replied is sent from the label memory, sent back to the RF front-end circuit via the logic control circuit, and finally sent back to the reader through the antenna

The basic components of the RFID system include RFID electronic labels, readers, and application software.

It is an automatic identification system that uses radio frequency identification technology for data collection and transmission.


· EPC (Electronic Product Code) is an electronic product code, which is a coding system. It is built on the basis of bar coding to realize the marking of single products.
· EPC coding system includes SGTIN, SGLN, SSCC, GRA, GIAI, etc.
· SGTIN includes SGTIN64, SGTIN96, SGTIN198, etc.


RFID Label Classification
According to the power supply method, RFID electronic labels can be divided into:

-Active RFID electronic labels (Active labels)
-Passive RFID electronic labels (Passive label)
-Semi-active RFID electronic labels (Semi Active label)



RFID Frequency Performance


RFID Label Advantages
 

RFID

ETC

NFC

Barcode

QR Code

Concept

LF
HF
UHF
Microwave

Electronic Toll Collection

It is a short-distance HF wireless communication technology, evolved from the integration of RFID and interconnection technology

A barcode is a graphic identifier that arranges multiple black bars and blanks of varying widths according to a certain coding rule to express a group of information.

The QR code is a multi-line, continuous, variable-length, symbolic sign containing a large amount of data

Application

Warehousing logistics
file management
personnel management
asset management
commodity inventory
electronic fence
animal management, etc.

Highway toll station
parking lot toll

Mostly used for communication between consumer electronic devices, e-payment, identity verification, anti-counterfeiting.

Commodity traceability

Commodities
electronic payment

Semantide

RFID Label/label

ETC Label

NFC Chip

Traditionally paper carrier, but also plastic, cloth, etc.

Paper/electronic QR code

Corollary Equipment

Label
Antenna
Reader
Software

ETC electronic labels
auto vehicle identification systems central management systems
other auxiliary facilities

NFC Chip
NFC Terminal
Reader

Bar code label
bar code generating equipment

bar code reader & computer

QR Code
Reader

Capacity

Max. to several MB

/

/

50 Bytes

2000 – 3000 characters

Requirement/Feature

  1. Not restricted by the environment, can read more and blindly.

  2. Strong penetration

  3. Strong anti-interference ability

ETC system air transaction is about 200ms once, so the collection can be completed only when the vehicle speed is lower than 60km/h

Need to keep a distance of less than 10CM when acquiring data

  1. Requires a certain degree of clarity, avoids breakage and stains.

  2. The area is too small and sometimes difficult to identify

It can be used in a small space, but there are still requirements for its print size

Working Mode

Non-contact two-way data communication through radio frequency

Special short-range communication between ETC electronic labels and microwave antennas in ETC lanes

Non-contact point-to-point data transmission

One-to-one close-range unobstructed scanning

Security Level

Information is stored in the chip, and the data content is protected by a password, which is not easy to be forged, stolen, and altered

The system security encryption algorithm is the DES algorithm, not the standard secret algorithm of pure national independent intellectual property rights

/

Not encrypted

/

Information Characteristics

The information of the chip can be rewritten repeatedly, and the use cycle is long

ETC does not recognize the identity of the vehicle and can only be used for charging

Can be read and encoding

Information cannot be changed after printing

/


Compared with other identification technologies, the advantages of RFID are summarized as follows:

> Without visual or manual intervention, it can automatically identify data in batches quickly;

Longer recognition distance, more accurate and reliable data collection;
Larger information storage capacity, up to several megabytes;
The label can be rewritten repeatedly and has a long life cycle;
Strong anti-interference ability, suitable for extreme harsh environment or high-speed movement;
High security, data content is protected by password;
Capable of penetrating communication.
Partner & User
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
partner
Social Networks :
top
Product Catalog