RFID electronic tag labels are becoming more and more common in our lives. RFID technology is similar to barcode scanning, which also saves data on a carrier in a certain way, and reads internal data through a special reading device.
Bar code is to print data on the surface of the object, although it is cheap in cost, convenient and fast, the data is easy to lose, and it is not suitable for harsh environments. RFID tag technology uses a dedicated RFID reader and an RFID electronic tag label that can be attached to the target, and uses frequency signals to transmit information from the RFID electronic tag label to the RFID reader.
The industrial production environment is complex and the frequency of reading and writing is high. How to ensure the normal reading and writing of the tag will not cause problems under the long-term and high-frequency use of RFID? If the RFID tag label fails, scanning and application will not be possible, then under what circumstances RFID electronic anti-counterfeiting tag label fails?
Usually the tag label uses PPS, PVC, resin, ceramics and other materials as the shell, but in extreme cases these materials may damage the tag label, such as encountering external pressure and exceeding the maximum bearing capacity of the RFID tag label, causing chip damage or coil breakage, etc. High static electricity or high voltage can also cause irreparable damage to RFID tag labels.
RFID technology uses a card reader to generate a magnetic field to transmit energy to the tag label. The tag label obtains energy from the reader's magnetic field and returns the data to the card reader. Electromagnetic waves cannot penetrate metal completely, so RFID is blocked by metal and the tag label may fail. Water can absorb electromagnetic waves. Although the tag label is waterproof, it will also be unable to read if the RFID tag label works in liquid.
RFID transmits energy and information through a magnetic field, and strong magnetic fields such as motors and power sources will disturb the magnetic field of the reader and make it impossible to read the tag label data. The sensing area of the card reader has a distance limit, and the tag label must enter the sensing area to read and write data normally. The distance of this sensing area depends on the device type and the on-site environment.
In summary, RFID technology can penetrate paper, wood, plastic and other non-metallic materials to read data and perform penetrating communication. However, it is difficult to work normally under metal barriers, water-wrapped conditions or strong magnetic fields, and it is likely to fail.
Tag labels can be divided into different types according to their own material and chip integration protocol. Except for physical characteristics, the working protocol of the tag label determines whether the tag label can communicate with the reader.