RFID is divided into low frequency (LF), high frequency (HF), ultra high frequency (UHF), microwave (MW) according to the different application frequencies. The corresponding representative frequencies are: low frequency below 135KHz, high frequency 13.56MHz, ultra-high frequency High frequency 860M~960MHz, microwave 2.4G, 5.8GRFID is divided into passive RFID, active RFID, and semi-active RFID according to the way of energy supply.Passive RFID has a short reading and writing distance and low price; active RFID can provide a longer reading and writing distance, but it requires battery power supply, and the cost is higher, which is suitable for long-distance reading and writing applications.The basic working principle of RFID technology is not complicated: after the tag enters the magnetic field, it receives the radio frequency signal sent by the reader, and uses the energy obtained by the induced current to send out the product information stored in the chip (Passive Tag, passive tag or passive tag) , or actively send a signal of a certain frequency (Active Tag, active tag or active tag); after the reader reads and decodes the information, it is sent to the central information system for related data processing.A complete RFID system is composed of three parts: reader (Reader) and electronic tag (TAG), the so-called transponder (Transponder) and application software system. Its working principle is that Reader transmits a specific frequency. The radio wave energy is given to the Transponder to drive the Transponder circuit to send the internal data. At this time, the Reader will receive the interpretation data in sequence and send it to the application for corresponding processing.In terms of the communication and energy sensing methods between RFID card readers and electronic tags, it can be roughly divided into two types: Inductive Coupling and Backscatter Coupling. Generally, low-frequency RFID mostly adopts the first type. mode, and the second mode is mostly used for higher frequencies.Retail analysts at Sanford C. Bernstein estimate that Walmart could save $8.35 billion a year by adopting RFID, much of which is in labor savings from not having to manually look at incoming barcodes.While some other analysts think the $8 billion figure is too optimistic, there is no doubt that RFID can help solve two of retail's biggest pain points: out-of-stock and attrition (product lost to theft and disrupted supply chains). , and now Walmart loses almost $2 billion a year from theft alone, and if a legitimate business can do that, it can rank 694th on the list of the 1,000 largest companies in America. .The research firm estimates that this RFID technology could help reduce theft and inventory levels by 25 percent.2. The product conforms to: EPC CLASS 1 GEN 2 and ISO18000-6C.Meet international ISO15693, ISO18000-6B, EPC G2 and other standards, using different antenna designs and packaging materials can be made into various forms of labels, such as vehicle labels, pallet labels, logistics labels, metal labels, book labels, liquid labels Tags, personnel access control tags, ticket tags, luggage tags, etc.Customers can choose or customize the corresponding electronic labels according to their needs.RFID can only play its role when there is a reading and writing device.RFID reading and writing equipment includes RFID card reader, RFID reading and writing module, etc. At present, YW-201, YW-601U and YW-601R are relatively cost-effective on the market.These devices can read or write RFID data and do well encrypted.The long-distance WV-CID1500 and WV-VID1500 can reach 1.5 kilometers.RFID ultra-high frequency (UHF) tags are sensitive to environments such as metal and liquid due to the electromagnetic backscatter (Backscatter) characteristics, which can lead to passive tags with this operating frequency. However, such problems have been completely solved with the development of technology. For example, SONTEC has developed passive tags that can be read perfectly in metal or liquid environments. products to facilitate the deployment of RFID in the above environments or application scenarios.Introduction of Phoenix New Media| Advertising Service| Recruitment Information| Privacy Protection| Disclaimer| Legal Counsel| Feedback| Site general website: Phoenix.com recommends using IE5.5 or above to browse