source：Industry News Popular：rfid fpc tag release time：2022-10-10 09:16:56 Article author：yu
The RFID system is introduced by the reader
RFID is divided into passive RFID and active RFID. Passive RFID generally refers to passive RFID without battery, which completely relies on receiving electromagnetic waves to drive the circuit to work, and the identifiable distance of the tag will not change. Active RFID systems generally refer to active RFID tags, whose recognizable distance will decrease as the power decreases.
ETC system using RFID technology makes the passage more convenient
Active RFID generally has a relatively long identification distance. For example, the ETC system of highway automatic toll stations and automatic parking lots generally adopts active RFID working at 2.4GHz. However, there is a battery in the ETC label. If the battery is dead, you need to replace the battery before it can work.
RFID tags
RFID tags are composed of two parts: Integrated Circuit (IC: Integrated Circuit) and antenna:
The IC is used to store and process data, modulate and demodulate the RF signal, and also need to collect energy from the signal sent by the reader to drive its own work.
The function of the antenna is to transmit and receive wireless signals.
EPC code format, EPC code may gradually replace the traditional UPC code, that is, commodity barcode
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