Here are a few things you should know about RFID on metal
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Here are a few things you should know about RFID on metal

Views: 1     Author: Site Editor     Publish Time: 2023-03-22      Origin: Site


Using RFID technology on or around metal surfaces is one of the biggest challenges. RFID anti-metal tags cannot be read when metal interferes with the radio waves used to transmit information.

It is possible, however, to improve the performance of RFID tags on metal surfaces. RFID tags should not be used on or near metal surfaces in this article due to the effects of metal on RFID.

Why Is RFID on Metal Tricky?

RFID tags contain a chip that stores information about the object they are attached to. Radio waves transmit this information to an RFID reader. The reader then uses this information to track the item or perform other tasks.

Metal surfaces can interfere with the radio waves used to transmit information from an RFID tag to the reader. The reader may have difficulty receiving and interpreting information from the tag due to this interference.

Metal causes interference for a few reasons:

  • A metal surface can reflect radio waves, making it difficult for the waves to reach the tag.

  • Radio waves can be absorbed by metal surfaces, preventing them from reaching tags.

  • The signal from the tag can be interfered with by electrical noise created by metal surfaces.

Due to these reasons, RFID tags may not work on metal surfaces. Using a few hacks, you can circumvent the problem.

How to Improve RFID Performance on Metal Surfaces

It is not possible to make RFID work perfectly on metal surfaces, but there are some things you can do to improve performance. Among them are:

  • RFID tags with metal mounts should be used

Metal surfaces can be used with some RFID tags. Metal interference is reduced by a special mounting system on these tags.

Several manufacturers offer RFID Anti-Metal tags with a gap between the tag and the metal surface. By allowing radio waves to pass through without being reflected or absorbed by the metal, this gap reduces interference.

  • Low-frequency RFID systems can be used

Low-frequency RFID systems can reduce the effects of metal interference. Metal surfaces are less likely to affect these systems because they operate at frequencies that are less sensitive to them.

Low-frequency RFID systems, for example, operate at 125 kHz or 134.2 kHz. Due to their longer wavelengths, these frequencies are less likely to be affected by metal surfaces than higher frequencies.

Although they have a lower data transfer rate, they may not be suitable for all applications. HF or UHF metal-mount RFID tags offer high data transmission. As a result, you can still benefit from the long wavelength while maintaining a high data transfer rate.

RFID Anti-Metal Tags: What are they?

RFID anti-metal tags function best on or around metal surfaces. Other tags would fail in harsh or difficult environments. Therefore, these tags are designed to be durable. Their features include:

  • Tolerance to high temperatures. Tags made from these materials can withstand temperatures of up to 200°C. In applications such as foundries, where tags will be exposed to extreme heat, this property will be useful.

  • Resistance to corrosion. RFID anti-metal tags are also corrosion-resistant. When tags are exposed to corrosive materials, such as chemicals or salt water, this resistance is crucial.

  • Adaptability. Also, these tags are flexible, making them ideal for curved surfaces.

  • A high level of stability. Even after exposure to extreme conditions, RFID anti-metal tags retain their properties.

  • Readability is good. The read performance of anti-metal RFID tags is good. Because most of these tags are used outdoors or in difficult environments, this is crucial.

  • A superior level of protection. RFID anti-metal tags provide superior protection against physical and environmental damage. In applications such as construction sites, where tags will be exposed to harsh conditions, this protection is crucial. IP63 to IP68 protection is available.

RFID Anti-Metal Tags: How Do They Work?

RFID anti-metal tags can be used in a wide range of applications. Here are a few of the most common:

  • Tracking assets. Assets, such as equipment or tools, are tracked with these tags. Equipment location tracking is especially useful in construction or manufacturing.

  • Management of inventory. RFID anti-metal tags can be used in warehouses and retail stores to track metallic inventory. As a result, you will be able to see what's in stock and where it is located.

  • Tracking of vehicles. Vehicles can be tracked using these tags. For fleet management or security, this is useful.

What is the best way to attach RFID tags to metal surfaces?

It depends on the type of RFID tag you are using how you attach it. The adhesive on some RFID tags is designed to adhere to metal surfaces, for instance.

The environment in which the tag will be used should also be considered. Using a method that can withstand high temperatures, for example, is necessary if the tag will be exposed to high temperatures.

Attachment methods include:

  • The adhesives. RFID tags are commonly attached to metal surfaces using adhesives. It is important to note, however, that not all adhesives are suitable for use on metal. A metal-compatible RFID tag must have a special adhesive.

  • The welding process. RFID tags can also be attached to metal surfaces by welding. When the tag will be exposed to high temperatures, this method is often used.

  • The bolting process. RFID tags can also be attached to metal surfaces using bolts. In applications where the tag will be exposed to high temperatures, this method is often used.

You must test the tag before using it in your application regardless of the attachment method you choose. By doing so, any potential problems will be eliminated.

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