RFID - Paul Bui

cribabsurdΗλεκτρονική - Συσκευές

27 Νοε 2013 (πριν από 3 χρόνια και 6 μήνες)

81 εμφανίσεις

Radio Frequency
Identification
(RFID)

What does an RFID tag look like?

Photo courtesy Getty Images

radio antenna

microprocessor

Where’s the battery?!

Physics Review
-

Induction

1.
run electricity through a coil of wire

2.
an electro
magnetic

field is generated

3.
works the opposite way too!

RFID antenna


passing through an
electromagnetic radio field
powers the tag!


chip sends back a response
using the antenna


response is an ID # back to
the RFID reader

Photo courtesy Getty Images

Where do we see RFIDs?

Supply chain usage of RFID


efficiently count and track goods!

http://msdn.microsoft.com/en
-
us/library/ms954628.aspx

Other RFID uses


authentication


proximity access cards


passports


student attendance tracking


any wireless tagging