Understanding RFID in 10 point

With the massive development of RFID products, it is important to understand how the technology works and how to use it in the most efficient way. How does the technology work? What is the most effective support in terms of how it is used? What chip to choose? To best find your way among the wide range of media and chips, here are a few simple points to which SBE responds:

1.RFID Definition

étiquette-antenne

Every day we use RFID products without knowing: via transport cards, anti-theft labels in stores, security badges or more recently contactless keys for our car.

This technology has the advantage of saving users time and allowing quick reading of data. But do you really know what RFID is?

 

RFID or Radio Frequency Identification is a method to remember and recover remote data. The system is activated by a transfer of electromagnetic energy between a radio label and an RFID transmitter. The radio label, also called RFID tag, is made up of an electronic chip and an antenna which receives the radio signal emitted by the reader also equipped with RFID technology. The components allow both reading and responding to the signals.  

 Fonctionnement-RFID

 


2. The various media

 

Today RFID is developing in different media:

 

Types of surface

Lenses

Cards and badges

décompositition-carte-rfid

Identification of people

Contactless payment

Control of access to business premises

Transport

Loyalty cards

Labels and stickers

 Etiquette-rfid

Identification of assets

Stock and inventory

Fight against forgery

Traceability of products

Promotion at events

Bracelets

 bracelet-rfid

Identification of people

Contactless payment

Promotion at events

Key rings and RFID tags

porte-clés-et-tags

Access to residences, premises and car parks

Company access badges

 

Subcutaneous chips

 puce-sous-cutanés

 

Identification

 

For each different surface, the chip may be for single use (reading only) or rewritable (reading and writing with memory). To choose the chip type, you must first choose the frequency according to the desired use.

 

3. Communication by the chip.

 

Frequency is the feature that allows communication between the chip and the antenna. But all chips on the market do not have the same functionality.

The chips differ largely in their operating frequency and the reading distance. The higher the frequency, the greater the reading distance. Depending on these elements, the chip will be more or less powerful and more or less expensive.

Three types of frequencies are used for RFID chips:

Low frequency (125 Khz),

High frequency (13.56 Mhz)

Very high frequency (UHF).

 

Type of frequency

Frequncy of function

Reading distance (m)

Transfer rate

Standards

Bass frequency

< 135 kHz

0.5

1kb/s

ISO 14223/1, 

ISO 18000-2

High frequency

13.56 Mhz

1

25kb/s

ISO 14443, 

ISO 15693, 

ISO 18000-3

Very high frequency

863 to 915 Mhz

3 to 6

28kb/s

ISO 18000-6

 

A number of manufacturers share the market, offering chips with increasingly high performance . This technology is now standardized and present in many everyday objects.

 

4. The capabilities of the RFID chip.


This technology has three versions:

  • Passive RFID
  • Semi-Passive RFID
  • Active RFID

 

Passive RFID works in read only since the chip does not have a battery and must be moved towards the reader to be read. A powerful electromagnetic signal is sent to it, enabling the RFID chip to be activated and the information contained in it to be read.

 

On the other hand, active RFID works with an energy source such as a battery or mini battery, which allows the card to be read over longer distances. This technique is mainly used for the traceability of people, vehicles or logistical traceability.

 

Like active RFID, semi-passive RFID is powered by an energy source. However, the battery feeds the RFID chip at regular time intervals. It does not send out a signal. This technology is useful for food traceability, especially to record changes in temperature during transport.

Posted By Deborah Dos Santos, On

Continue reading...
These articles too might interest you.

Sunday Monday Tuesday Wednesday Thursday Friday Saturday January February March April May June July August September October November December