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How does uhf rfid tag input data?

2020-10-12

uhf rfid tag, also known as radio frequency tag, realizes the spatial (contactless) coupling of radio frequency signals through the coupling element between the electronic tag and the reader, and realizes energy transmission and data exchange according to the timing relationship in the coupling channel. So how does uhf rfid tag input data?

How does uhf rfid tag input data? The data of uhf rfid tag can be read and written effectively through the programmer. The reader/reader (reader capable of reading/writing) can also effectively read and write the data of uhf rfid tag.

RFID readers are also mobile and fixed. At present, RFID technology has been widely used, such as libraries, access control systems, and food safety traceability.

Radio Frequency Identification (Radio Frequency Identification) technology, also known as radio frequency identification, is a communication technology that can identify specific targets and read and write related data through radio signals without the need for mechanical or optical communication between the identification system and specific targets. contact.

Radio frequency is generally microwave, 1-100GHz, suitable for short-distance identification communication.

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The RFID tag is the physical carrier of the product electronic code (EPC), which is attached to the tracked item and can be circulated and read and written on a global scale.

Conceptually, RFID is similar to barcode scanning, and for barcode technology, RFID is used to attach the encoded barcode to the target and use a dedicated scanning reader to transmit the bar-shaped magnetic information to the scanning reader; RFID uses a dedicated RFID readers and special RFID tags that can be attached to the target object, through the RFID tag through the frequency signal to send information to the RFID reader.

In the technical field, the transponder originally refers to an electronic module that can transmit information and reply information. In recent years, with the rapid development of radio frequency technology, transponders have gained new ideas and meanings. Also called smart tags or tags. The RFID tag reader communicates wirelessly with the RFID tag through an antenna. RFID technology can identify high-speed moving objects and simultaneously identify multiple tags, which is fast and convenient.

The transponder is composed of an antenna, a coupling element and a chip. A tag is usually used as a transponder. Each tag has a unique electronic code and is attached to an object to identify the target object.

Reader: A device composed of antennas, coupling elements, chips, and reading (and sometimes writing) tag information. It can be designed as a handheld RFID reader/writer or a fixed reader/writer.

Application software system: It is application layer software, mainly for further processing the collected data for people to use.

The reader can be a read or read/write device depending on the structure and technology used, and it is the RFID system information control and processing center. The reader usually consists of a coupling module, a transceiver module, a control module and an interface unit. The reader and the transponder generally use half-duplex communication for information exchange, and the reader provides energy and timing to the passive transponder through coupling. In practical applications, management functions such as the collection, processing and remote transmission of object identification information can be further realized through Ethernet or WLAN. The transponder is the information carrier of the RFID system. Most of the transponder is a passive unit composed of a coupling element (coil, microstrip antenna, etc.) and a microchip.

RFID is a flexible application technology that is easy to control, simple and practical, and especially suitable for automatic control. Can work freely in a variety of harsh environments: short-distance radio frequency products are not afraid of oil stains, dust pollution and other harsh environments, and can replace barcodes, such as tracking objects on the assembly line of factories; long-distance radio frequency products are mostly used in traffic, and the identification distance can be Up to tens of meters, such as automatic toll collection or vehicle identification.

 


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