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What are the applications of wireless electronic tags?
There are two kinds of electronic tags commonly used in life, wireless electronic tags and wired electronic tags. So what is a wireless electronic tag and where is it used? Let's take a look together.

Wireless electronic tag, also known as smart tag, is a device with a certain storage capacity, which adopts radio frequency identification (RFID) technology. Wireless electronic tag consists of ic device, inductive antenna, communication interface and display module.

According to ISO/IEC l5693, wireless electronic tag ic uses 13.56 MHz frequency. Besides IC, there are RF circuit, electronic paper drive circuit, memory and booster circuit on the wireless tag. ISO/IEC 15693 is a communication mode to obtain voltage by electromagnetic induction. The voltage of the device developed here is+3 V. Because it needs+15 V to drive the electronic display device, a booster circuit is adopted and an independent power supply is used to supply power to the electronic paper driving module. The system hardware block diagram is shown in the figure.

Reading and writing wireless electronic tags;

The reading and writing equipment (base station) regularly radiates electromagnetic waves to the surrounding environment through the antenna, and then enters the receiving state, waiting for the electronic tag (transponder) to reply. Because RFID itself does not contain power supply, when RFID enters the electromagnetic field, it first emits electromagnetic waves through its own antenna coupling reader, and charges an internal capacitor after rectification and filtering. When the capacitor voltage rises to a certain value, the wireless electronic tag has enough energy, and then the electronic tag is started. The control device communicates with the electronic paper display module, sends some data to the electronic display module and returns a signal to the reader.

Wireless electronic tags are widely used in the management of all walks of life, such as: bank's electronic wallet, business membership card, bus card, medical insurance card, canteen meal card, access control attendance card, ID card and so on.