RFID
RFID - Radio Frequency Identification
What is the usage of RFID???
RFID is a small identification device that replaces bar code reader now-a-days.
The usage of this instrument increases in the large shopping malls, super markets, etc.
If you are in a super market you have to wait in queue for billing. But by this RFID technology no need of wasting your time for waiting.
RFID will detect every item in your shopping bag and will send information of your products to the retailer and product manufacturers.
It will also get the bill amount from your bank.
No lines, no waiting, no worries..!!!
The usage of this instrument increases in the large shopping malls, super markets, etc.
If you are in a super market you have to wait in queue for billing. But by this RFID technology no need of wasting your time for waiting.
RFID will detect every item in your shopping bag and will send information of your products to the retailer and product manufacturers.
It will also get the bill amount from your bank.
No lines, no waiting, no worries..!!!
What is the working of RFID?
RFID has two parts RFID reader and RFID tag.
RFID Reader:
It is a device that is used to interrogate RFID tag.
It consists of an RF module that acts as both transmitter and receiver.
The transmitter contains a modulator to modulate the message signal with carrier signal and an amplifier to strengthen the weak signal.
The receiver contains a demodulator to extract the message signal and another amplifier again to amplify the received signal.
It consists of an RF module that acts as both transmitter and receiver.
The transmitter contains a modulator to modulate the message signal with carrier signal and an amplifier to strengthen the weak signal.
The receiver contains a demodulator to extract the message signal and another amplifier again to amplify the received signal.
RFID Tag:
It is also a small device that stores and send data to the RFID reader.
It has two types one is active tag (do not require power from reader operates in battery power) and other is passive tag (require power from reader).
Tag contains an antenna for transmitting and receiving and a chip for storage.
It has two types one is active tag (do not require power from reader operates in battery power) and other is passive tag (require power from reader).
Tag contains an antenna for transmitting and receiving and a chip for storage.
Working:
The antenna in the Tag receives the signal and processes it in the chip. Then send the data to the Reader through the antenna.
Now the transmitter in the Reader receives the data, processes it and finally stores it in the permanent memory for future use or performs any required operation.
Now the transmitter in the Reader receives the data, processes it and finally stores it in the permanent memory for future use or performs any required operation.
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