With the continuous development of my country's RFID technology, RFID electronic tags have become increasingly common in our lives. RFID technology is similar to barcode scanning. It also saves data on a carrier in some way and reads it through a special reading device. Internal data.
Bar code is to print data on the surface of the object, although the cost is low, convenient and fast, but 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 that can be attached to a target object, and uses frequency signals to transmit information from the RFID electronic tag 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 label will not cause problems under the long-term and high-frequency use of RFID? If the RFID label fails, scanning and application will not be possible, then under what circumstances RFID electronics The anti-counterfeiting label fails?
1. The label is damaged
Usually labels are wrapped with industrial materials such as PPS, PVC, resin, ceramics, etc., but in extreme cases, the labels may be damaged. For example, when the external force exceeds the label's bearing capacity, the chip is damaged or the coil is broken, etc., high static electricity or high Piezoelectricity can also cause irreparable damage to the label.
The label protection grade produced by Chenkong Intelligent reaches IP68, and it is also waterproof, anti-high temperature, anti-chemical, anti-acid, anti-oil, etc. It can be used in most industrial environments and can be used normally, so just avoid it when installing the label. The label can be used normally when it is installed on the bearing surface and is subjected to external force extrusion and the power supply accessories prevent high voltage and high static electricity.
2. The label is not damaged
RFID technology uses a card reader to generate a magnetic field to transmit energy to the tag. The tag obtains energy from the reader’s magnetic field and returns the data to the card reader. Electromagnetic waves cannot completely penetrate the metal, so the tag is blocked by the metal. It will malfunction. Water can absorb electromagnetic waves. Although the tag is water-resistant, it will also be unreadable if the tag is working in liquid.
RFID transmits energy and information through a magnetic field, and strong magnetic field attachments such as motors and power supplies will disturb the magnetic field of the card reader and make it impossible to read the tag data. The sensing area of the card reader has a distance limit, and the tag 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 or strong magnetic fields, and it is likely to fail. phenomenon.
3. Type of label
Tags 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 determines whether the tag can communicate with the reader.
For example, a card reader that uses Modbus data type cannot correctly decode tags that use free protocols, and can only read a mess of garbled codes. Therefore, when Chenkong Smart develops RFID for each type of reader, a corresponding model of tag is developed. , Only the matching card reader and tag can decode the data normally and complete the data exchange.