What is RFID and how does it work?

What is RFID and how does it work?

There will probably be many of you who know what RFID is and by the way, RFID technology is not much new technology. Just because of its many applications, it has caught everyone’s attention.

Such as computer network technology, which was invented in the 1960s or 1970s, but its widespread adoption only occurred with the advent of the Internet. Likewise, the use of RFID technology is becoming more and more popular with the advent of the IOT (Internet of Things). Then, we know how people started using RFID in every part of our lives nowadays.

Due to the popularity of RFID so much, today I thought why not provide complete information to our readers on topics such as what is RFID, what technology is used in it and how this RFID works, so that they can also access any RFID devices. Before using it, learn how it works.

If you really want to understand this technique, you should read the entire article because perhaps many of you will learn something new. Then let’s start without delay and find out what is the definition of radio frequency in Hindi.

What is RFID

The full form of RFID is Radio Frequency Identification and this acronym refers to small electronic devices consisting of a small chip and an antenna. This chip is usually capable of holding 2,000 bytes of data.

These RFID devices also work in the same way as a barcode, magnetic stripe attached to a credit card, or an ATM card attached to the back that provides a unique identifier for that object.

Just like scanning a barcode or magnetic stripe to get information, in the same way an RFID device is also scanned to retrieve identifying information.

When and who was the first to introduce RFID technology?

The first use of RFID technology January 23, 1973 in Mario W. Cardolo was made by. who also holds the first US patent to his name in which he invented a rewritable memory in an active RFID tag. The same year Charles Walton who was an entrepreneur from California, obtained a patent in which he used a passive transponder to open a door without any key.

RFID Frequencies: What are the types of RFID systems?

By the way, there are many types of RFID systems. But there are three main types of them

1. Low Frequency (LF)
2. High Frequency (HF)
3. Ultra Frequency (UHF)
4. Microwave RFID

Frequencies vary according to country and region.

Low-frequency RFID systems have a range from 30 kHz to 500 kHz, with a typical frequency of 125 kHz. LF RFID has short transmission ranges, which can generally range from a few inches to six feet.

High frequency RFID systems have a range of 3MHz to 30MHz, while their typical frequency is 13.56MHz. It has a standard range from a few inches to several feet.

RFID UHF systems have a range of 300MHz to 960MHz, with a typical frequency of 433MHz and a standard range of 10 feet to 25 feet.

RFID microwave systems operate at a frequency of 2.45 GHz and can be read from over 30 feet away.

How does RFID work

Before understanding RFID technology, we have to understand what its different parts are and what their functions are.

The RFID system consists of three parts:

  • Scan antenna
  • transceiver, while it also comes with a decoder. through which the data is interpreted
  • A transponder – an RFID tag – is programmed with some information.

In this, the scanning antenna propagates the radio frequency signals in a relatively short range. This radiation does two types of work:

  • Provides a means to communicate with the transceiver (RFID tag).
  • Provides power for RFID tag to communicate. (especially in passive RFID tags).

This is the main part of this technology, RFID tags do not require any batteries and thus can be used for many years.

In this scanning antennas are permanently fixed to the roof; There are also portable antennas for use. It can take any shape or size to suit your needs; For example, you could also make them inside a door frame so that they can accept data from all the people who pass through that door.

When the RFID tag passes through the field of the scanning antenna, it detects the activation signal from this antenna. Which wakes up the RFID chip, and they start sending information from their chip which is picked up from the scanning antenna.

How many types of RFID tags are there?

If there are different types of RFID tags, however, there are two more important ones among them.

1. Active
RFID Tags 2. Passive RFID Tags

Active RFID Tags

These signs have their own energy sources; The big advantage of this is that even if the reader is far away at these tags, they can still receive the signal. The lifespan of these devices is 10 years, which indicates that they have limited life spans.

Passive RFID Tags

However, there are no batteries required at these tags, and they are also very compact. If we talk about their ages, then their lifespan is almost unlimited. RFID tags can be read in a variety of conditions, where barcodes and other optical reading techniques are useless.

  • In this, it is not obligatory that the mark be on the surface of the body, so that it does not deteriorate too quickly.
  • The reading time is usually less than 100 milliseconds .
  • In this, a large number of tags can be read simultaneously, not element by element.
    This is how RFID technology works.

Where can RFID technology be used?

RFID technology is only used in their RFID tags. These tags come in many varieties, and their shapes and sizes vary greatly, encapsulated together in many different types of materials:

  • Animal tracking tags , which are inserted under the foreskin to track their movements. Its size is the size of a grain of rice.
  • Some markers also have spiral shapes that are used to trace trees and other wooden objects.
  • Credit card format RFID tags are used in access applications.
  • These tags are kept in many merchandise stores as hard plastic anti-theft tags.
  • Heavy duty 120 x 100 x 50mm transceivers are used for tracking shipping containers, heavy machinery, trucks and railcars.
  • RFID devices are used in dogs to identify them.
  • Also, to prevent the theft of many expensive musical instruments, RFID tags are cleverly installed in them, so that the thief is not aware that the stolen item can also be tracked by him.

Where are RFID tags placed on vehicles?

RFID tags can be installed in many places in vehicles. Also, they have many uses too, if we are to be honest. So let’s know about her.

1. In Automated Percussion : If we talk about the induction of transfer, then the introduction of FASTag has made a big change in the automated fee, it is the RFID tag that is used to implement the automated fee.

In this, the driver of any vehicle can pay toll easily, just by going through this RFID which enables toll gate. In this, they do not need to stop anywhere nor do they have to do any actual transaction. Now imagine how much benefit they might get in busy traffic lanes.

2. AVI (Automatic Vehicle Identification): RFID AVI tags are used to fetch all information about the vehicle. This is why it is not necessary to have physical papers for any vehicle. You just have to scan this tag and you will get all the information about all the vehicles.

3. For genuine verification : Some companies release vehicles that are already compatible with RFID tags, so they can be verified for authenticity. The same goes for their spare parts as well. Both clear signs of tampering and tampering are available to do the same job.

4. In terms of RFID photo tags : It is not only about reading tire origins information, but also many things can be traced from it.

5. For automated parking and entry systems : Parking spaces can be easily automated using RFID technology. For this, just scan the windshield tags with RFID technology and then it will start working automatically.

6. In Logistics Through its use, transportation vehicles can be automated and easily identified.

What is the difference between RFID and barcode

Although RFID tags and barcodes both carry information about products. But there is a big difference in using these two techniques. So let’s know more about the differences between RFID and Barodes:

Barcode readers A direct line of sight Those printed barcodes are required; Whereas, RFID readers do not need a direct line of sight. Whether it is active RFID tags or passive RFID tags.

RFID tags easily from a distance RFID reader which can be read, which reaches a height of about 300 feet. At the same time, the barcode reading range is very short, usually less than 15 feet.

RFID readers can quickly interrogate and read RFID tags; which are at 40 or more marks per second. Whereas, barcodes take longer to read, as they require a direct line of sight. On the other hand, if the items are not oriented correctly, it will also take longer (a few seconds) to read the barcode.

Because line of sight is required to read barcodes correctly. Having these requirements limits the rigidity of the barcode and with it the reusability of barcodes (in simple language, a line of sight is required for the barcode, so the printed barcode must remain on top of the product so that it is more exposed yes to the barcode reader.

At the same time, there is the possibility of further cuts and damage to this barcode). In contrast, RFID tags are more rigid, as the electronic components must be contained in a plastic cover coil that is protected from. RFID tags are often implanted into the product itself, ensuring that it is more durable and reusable.

Barcodes do not have the ability to read / write; This means that you cannot add any additional information to it in a printed barcode. Whereas RFID tags are, but can be easily read/written by devices, RFID readers can easily communicate with the tag, and the information on it can also be changed according to the tag’s design.

Whereas RFID tags are more expensive than barcodes.

What did you learn today

I hope you like my article What is RFID You MUST have liked it. It has always been the endeavors of the readers to identify radio frequencies in Hindi. Complete information about this article should be provided so that there is no need to search for that article on any other website or internet.

This will also save their time and they will also have all the information in one place. If you have any doubts about this article or if you want there to be some improvement in it, you can write low comments on it.

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