Radio frequency identification (RFID) technology

radio frequency identification(RFID) This technology is currently being caused widespread concern. Because this technology can be used to track and manage almost all physical objects. Therefore, more and more retailers and manufacturers in the development and application of the care and support of the technology.

RFID technology developed by the Auto-ID Center, the application form for the tag (tag), card and label (label) equipment.

Marking apparatus by the RFID chip and antenna, tag types are divided into three types: automatic, semi-passive and passive. Development of the market now is basically a passive RFID tag, because such equipment is low cost, and easy to configure.

Passive tags use radio waves to operate equipment and communications, signals must be within the allowable range identifier, typically 10 feet (about 3 meters). Such markers suitable for short-distance identification information, such as disposable razors or removable insert boxes such commodity.

RFID chips can be read-only, but also read / write mode, decide on the basis of application requirements. Passive tag device uses E2PROM (electrically erasable programmable read-only memory), to facilitate the use of specific electronic processing device to write data. General marking device at the factory are set to read-only mode. Auto-ID specification also includes deadlock command to stop the tracing process where appropriate.

RFID identification works

Auto-ID Center developed the Electronic Product Code (EPC) specification to identify targets, and all the data associated with the target. EPC system to use the correct database link EPC code, manufacturers and retailers can query, manage and change operation based on permissions.

Once the tag attached to the product or equipment, RFID identifier will be able to read the data stored in the tag. Figure it works.

Auto-ID EPC system plans to become a global standard, which include: specific code to identify the target (EPC); define the data owner (EPC Manager); the rest of the custom code and tag information; the definition of goods parameters, such as SKU numbers; the EPC code into Internet address (target naming service ONS); the target is described (physical markup language PML); gather and process RFID data (expert software); specific number assigned to each type of target (string line number); the minimum specification for interoperability set (marking and identification specification).

The benefits of using RFID technology is the biggest enterprise supply chain transparent management, effectively reduce costs. At present, many users are interested in the technology used to track a variety of products, said it plans to RFID for tracking asset position within the company; the company says it will have a lot of the technology used for logistics management.