EM18 RFID READER MODULE PDF

A simple RFID reader consists of an antenna, demodulator, data decoder unit and some filters. RFID Cards can be either active type or passive type. The range is typically feet or more. The required power for the operation is drawn from the electromagnetic field generated by the RFID reader. Usually, passive RFID cards are read only type i. The range is very small i.

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A simple RFID reader consists of an antenna, demodulator, data decoder unit and some filters. RFID Cards can be either active type or passive type. The range is typically feet or more. The required power for the operation is drawn from the electromagnetic field generated by the RFID reader. Usually, passive RFID cards are read only type i.

The range is very small i. The design of the circuit is described here. As Arduino is the main processing device, all the connections are the connections are explained with respect to it. As this module runs on 12V, it must be powered separately using a 12V supply.

As the reader reads the information from the card and transmits to the host device i. All the connections are shown in the circuit diagram. All the other connections with respect to LCD i.

The working of the project is explained in this section. In order to read that data, the card must be brought in proximity of the reader. The RFID reader module continuously emits electromagnetic radiation in the form of radio waves at a frequency of KHz. When a passive RFID card is brought near this field, due to the concept of mutual induction, the electromagnetic field from the reader induces a small current in the antenna coil of the card.

As a result, the IC in the card gets sufficient power from this and transmits the data through the antenna which is in turn received by the antenna of the reader. Arduino in turn displays this message on the LCD. Some of the applications are RFID based authentication system, security access system, attendance system, inventory management, livestock management etc.

Project Code.

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em18 rfid reader module

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ISO 16982 PDF

Arduino RFID Reader

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