epc gen2 is the communication protocol for rfid uhf products
EPCglobal organization has been working hard to advance the process of data synchronization and RFID data exchange, and has now adopted the second generation UHF for RFID tag manufacturing Standard (Gen2).
First, let's discuss what changes the existing tag standards have brought us. There are currently 4 different label manufacturing standards: the ISO-180006A standard of the British Technology Group (BTG), the 180006B standard of the American Intermec Technologies Corp., and the American Matrics Company (recently adopted by the American Symbol Technology Company). Acquisition)'s
Class 0 standard, Alien Technology's Class 1 standard. Each company has the intellectual property rights (technical patents) of its own label products, and Gen2 integrates and expands the above four label standards.
One issue with the Gen2 standard is the privileged licensing and distribution associated with Gen2 technology. To date, Intermec Technologies has suspended any other privileges to encourage enforcement of standards and advancement of technology; BTG, Alien, Matrics and approximately 60 other companies have signed EPCglobal's non-franchise licensing agreements. This means that although the Gen2 standard and its use are royalty-free, UHF RFID products (such as tags, readers, etc.) will not necessarily be so. Intermec Technology claims that products based on the Gen2 standard include several of its own patented technologies.
Gen2 tags have several advantages based on customer-driven concepts:
1. Open standards. This means that labels are available through multiple channels, which will lead to rapid price reductions.
2. Storage and password. Gen2 tags have 96 bytes of storage space in the chip, and a unique password. The larger storage capacity and better security performance can effectively prevent the chip from being illegally read.
3. Size. The chip will shrink to 1/2 to 1/3 of the current version.
4. Compatible with multiple vendors. There will be good compatibility between devices from different vendors.
5. High reliability. The tags have high read rates (nearly 100% read rate when tested at longer distances).
6. Better label reading performance. Avoid double reading when scanning labels in batches.
7. "Kills". The tag can be permanently destroyed by itself after receiving the deactivation command from the reader.
8. Security. The tag has a better security encryption function to ensure that the data will not be spread out when the reader reads the information.
9. Real-time. Allowing tags to enter the reading zone after a delay and still be read is something Gen 1 cannot achieve.
10. Global frequency. Wider spectrum and radio frequency distribution improves UHF's frequency modulation performance to reduce interference with other radio equipment.
11. Reading speed. The reading rate of Gen2 tags is 10 times that of existing tags, which enables high-speed automatic operation through the application of RFID tags.