What are RFID tags? Everything you need to know

What are RFID tags? Everything you need to know

Time:2023-2-18 Author:Frank Chung

An improved technique for tracking equipment is RFID tagging. With so many industries already using it, it is rapidly gaining popularity. Using RFID tags has several advantages over barcoding, including the ability to capture data in bulk as compared to one item at a time with barcodes.

Without being in the direct line of sight of an RFID tag, RFID readers may also recognize objects from a distance. As a result, RFID tagging is a great option for high-value assets because it makes it simple to find hidden goods and create tighter control over them.

What are RFID tags? Everything you need to know

We will go through the main uses of RFID tags and their numerous varieties in order to help you learn more. Additionally, we will provide examples of real-world applications to assist you comprehend how you may apply your own RFID solutions. Because it can help many company operations run more smoothly, RFID technology is gaining popularity. Let’s get going!

What is RFID Tag?

Radio frequency interaction with RFID readers allows RFID tags, which are small electrical devices, to wirelessly identify and monitor physical objects. At the very least, each tag has an antenna and an integrated circuit.

What are RFID tags? Everything you need to know

How do RFID tags perform?

The RFID tags are electronic data tags that serve as labels for identifying objects. Tags help to identify, classify, and track particular assets. Compared to barcodes, they are more informational and data-capable. In contrast to barcodes, information is read from and sent to tags using an RFID system, which reads many tags at once.

RFID tags can be grouped in several ways depending on their form factor, power supply, and frequency. All tags require power for energizing chip, transmit data, receive the data in order to operate. Whether a tag is semi-passive, active or passive depends on how its power is delivered.

Most passive tags make use of EEPROM memory. And Some have silicon-level laser programming. SRAM with a battery backup is used by several active tags. Nonvolatile memory in passive tags usually ranges from 64 bit to 1 kb. Active tags with memory up to 128 kilobytes are utilized in the military tag.

What are the types of RFID Tags?

After talking about how crucial RFID tagging is, it’s time to examine the various types of RFID tags to determine which ones work best for your company. Active and passive RFID tags are the two main categories.

Active RFID Tags

When businesses need to track the locations of multiple objects in real time, active RFID tags are preferred. The power source used by active RFID tags is typically a battery. The “real-time” component is made possible in this way. As a result, RFID tags have the ability to continuously broadcast signals.

Additionally, active tags provide a wider area for scanning objects. Therefore, if you need to always track high-value commodities, you could choose to choose active RFID tags.

Usually, active tags are bigger than passive tags in size. Additionally, they are built toughly, so you won’t have to worry about them ripping off.

Passive RFID Tags

Due to their more widespread use and lower implementation costs, passive RFID tags are increasingly frequently used by businesses. They are a cost-effective option for numerous sectors.

Additionally, they are considerably smaller than active RFID tags, which is advantageous for businesses that deal with small-scale goods.

The best option for tracking expensive items is to use active tags. Passive RFID tags are a better option if high costs are a concern for you.

What purpose do RFID tags serve?

Any object may be identified and tracked using RFID tags. They aid in increasing efficiency because they can read many tags at once or the ones that might be concealed or in a box.

RFID tagging makes manufacturing more responsive, streamlines distribution, makes it easier to predict demand, and gives visibility into the flow of products.

RFID’s greatest benefits have been put on display in asset -level installations at clothing retail establishments. Retailers’ problems with inventory accuracy, out-of-stock levels and assisting customers in easily and quickly locating the style, color, and size they are searching for are being addressed by item-level tagging, in which small, unassuming RFID tags are typically embedded in already-existing apparel hang tags.

Tags can be utilized in the healthcare industry for patient identification, specimen, laboratory, pharmacy, document, and records management.

How can you read RFID tags?

A vital part of the RFID solution is a RFID Reader. Tag data is collected after readers that are within a tag’s range activate it. The ability to write to or encrypt the RFID tag is also available on readers. Although readers can analyze many tags at once, it can also identify and priorities all the information it has gathered.

To read incoming data, readers use algorithms and tag data filtering. They can isolate specific tags depending on specific logic and their significance to a given operation. A reader, for instance, has the capacity to focus on a specific tag to more effectively facilitate locating or finding that specific item while still processing all tags in a given area.

Fixed and passive UHF readers are two types of RFID readers that are available in a range of sizes, designs, and pricing points. Knowing the environment and application will help you make decisions more easily.

For instance, a little retail warehouse would employ a fixed reader at the backroom transition door to scan products moving in and out, but a shipping or receiving dock may use an industrial fixed reader in a dock door portal installation to read boxes moving onto it and from a truck.

A ceiling-mounted fixed reader may be used to cover a large store’s sales floor. Antennas are also a component of solution for fixed readers. The antenna is what transmits power to the tag and collects data to return to reader.

When reading an asset available, handheld readers are frequently used. They serve the same purpose as constant readers but offer greater workplace freedom. Handheld readers are by definition a more affordable option for RFID reading because they may work in a wider variety of settings and are focused on the target asset.

Active and passive tags: what are the differences?

RFID tags that are active must have some power source, typically a battery, also a transmitter in order to transmit a signal to an RFID reader. These are a great option for the highest accuracy solutions that need real-time tracking and have a larger data storage capacity and read range. They are often more expensive and bulkier because a battery is required. The receivers are able to pick up one-way signals from active tags.

An integrated circuit and an antenna are used in passive RFID, which lacks a power source (IC). When the IC is in the reader’s zone, the reader emits radio waves that power it. These tags can be of small size, have a lengthy lifespan of 20+ years. But are typically only able to provide minimal identification information.

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