How does RFID works?

Apr 29, 2024

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RFID (radio frequency identification technology) as a modern newborn a technology, in today's society has been can not be ignored its role, RFID is a kind of wireless communication technology, so that the object and the personnel can be automatically identified and tracked, RFID system includes a RFID reader and one or more RFID tags.

 

RFID reader to send radio signals to the tag, oh, the chip in the tag to receive signals, and from which to extract the information stored in the tag, and subsequently, the chip in the tag will return the information to the reader, the reader receives the returned information back to take relevant measures. Of course, the tag contains a chip and an antenna, which can be embedded, or placed on top of the object.

 

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RFID applications in a wide range of applications, such as inventory management, logistics tracking, video security, identity verification and so on a variety of applications, which itself carries high efficiency, scalability, and other characteristics, in tracking objects or assets, RFID also stands out.

Specific areas to prevent the deployment of RFID readers, everyone can track the movement or location of the tagged items, in general, RFID technology is used in supply chain management, inventory tracking, access control and so on. Need additional attention is that RFID as a passive technology, items or individuals themselves need to carry RFID tags, or RFID systems simply can not be tracked. Therefore, RFID cannot be used directly as a tool for tracking or monitoring items or personal activities.

 

So does RFID technology need to connect to the Internet? As stated above, RFID works between RFID tags and readers RF signals to propagate feedback, do not need to rely on the Internet or any network connection, but if the information collected by the reader needs to be passed on to the central database, then this time the need for Internet connectivity.

 

At the same time, we must be curious, RFID detection distance is how much? Usually, it is really between a few centimetres to a few metres, on the other hand, the reading distance of self-powered RFID tags can be as high as a few metres or even a few hundred metres, compared to ultra-high-frequency (UHF) RFID systems, which are usually even further away than high-frequency or low-frequency systems.

 

Performance, RFID tags will be in the tag itself, the quality of the environment, use, as well as processing methods lead to differences in service life, in general, are 3-20 years, such as whether or not with a power supply, which does not come with a power supply, that is, there is no built-in power supply RFID tags have a longer lifespan, this kind of RFID tags rely on the reader to transmit energy to power supply, so the life expectancy is even longer! The RFID tag relies on the energy transmitted by the reader to power it, so it has a longer life. In order to extend the service life, it is best to maintain RFID tags on a regular basis.

 

Our company also produces RFID products, if you have any demand, please contact us in time, we will provide high quality products and services, such as our LQ-MD S200 RFID Single Card Ink-jet Printing & Reading & Writing Detection Machine as above picture, The equipment integrates UV spray printing and RFID read-write verification, which shortens the production process, improves the production efficiency and saves labour.

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