For me, working on RFID seemed too difficult in the beginning. I didn't even know how does it work. But now I have started to gather information about this thing. Its working is very simple.
RFID has two parts:-
1) An RFID reader and
2) RFID Tag.
The RFID tag are of two types:-
1) Passive Tag
2) Active Tag
The tag is what we carry with ourselves as an identification tag. Now the RFID reader is designed to radiates Electromagnetic(RF) rays in the surroundings. For a passive tag when it comes under the vicinity of the reader it will get energised as the waves radiate will couple with its LC-tank circuit. Now the tag will radiate energy back according to its "Specific Code". Hence the RFID reader can get the appropriate code of the Tag with which it is contacting.
Again, the Active tag has its own power supply to work with. Hence it can radiate its code by itself and also the distance (range) is increased.
These links may help you with the working of the RFID technology.
> General
> 125 KHz RFID
RFID has two parts:-
1) An RFID reader and
2) RFID Tag.
The RFID tag are of two types:-
1) Passive Tag
2) Active Tag
The tag is what we carry with ourselves as an identification tag. Now the RFID reader is designed to radiates Electromagnetic(RF) rays in the surroundings. For a passive tag when it comes under the vicinity of the reader it will get energised as the waves radiate will couple with its LC-tank circuit. Now the tag will radiate energy back according to its "Specific Code". Hence the RFID reader can get the appropriate code of the Tag with which it is contacting.
Again, the Active tag has its own power supply to work with. Hence it can radiate its code by itself and also the distance (range) is increased.
These links may help you with the working of the RFID technology.
> General
> 125 KHz RFID
No comments:
Post a Comment