The working principle of RFID is: the label into the field, if the reader receives special RF signals, can with the induction current obtained by the energy to send out the product information stored in the chips (Passive, Tag, passive tags or passive tags), or take the initiative to send a signal to send frequency (i.e. Active Tag. Active tags or active tags), the reader reads information and decoded, sent to the central information system for data processing.
RFID technology developed by the Auto-ID center, the application form for marking (tag), card and tag (label) equipment. The marking device is composed of a RFID chip and an antenna, and is divided into three types: automatic, semi passive and passive. Now the development of the market is basically a passive RFID tag, because these devices are low cost, and easy to configure. Passive marking devices operate and communicate with radio waves, which must be within the range allowed by the identifier, usually 10 feet (about 3 meters). This type of marking is suitable for short distance information identification, such as disposable razors or removable blades.
The RFID chip can be read only, but also read / write, depending on the application requirements. The passive marker equipment adopts E2PROM (electrically erasable programmable read-only memory), facilitate the use of specific electronic processing equipment to write data. The general marking device is set to read-only mode at the factory. The Auto-ID specification also contains a deadlock command to block the tracking process in the appropriate context.More information, please come to visit our website: www.qilonglotto.com