22-09-2012, 02:48 PM
A TM terminal design is based on fingerprint recognition
A TM terminal design.pdf (Size: 405.44 KB / Downloads: 82)
Abstract
For the traditional ATM terminal customer
recognition systems only rely on bank cards, passwords, and
such identity verification methods which measures are not
perfect and functions are too single. For solving the bugs of
traditional ones, the author designs a new ATM terminal
customer recognition systems. The chip of S3C2440 is used for
the core of microprocessor in ARM9, furthermore, an
improved enhancement algorithm of fingerprint image
increase the security that customer use the ATM machine.
INTRODUCTION
With the development of computer network technology
and e-commerce, the self-service banking system has got
extensive popularization with the characteristic offering
high-quality 24 hours service for customer. Nowadays, using
the ATM (Automatic Teller Machine) which provide
customers with the convenient banknote trading is very
common. However, the financial crime case rises repeatedly
in recent years, a lot of criminals tamper with the ATM
terminal and steal user's credit card and password by illegal
means. Once user's bank card is lost and the password is
stolen, the criminal will draw all cash in the shortest time,
which will bring enormous financial losses to customer. How
to carry on the valid identity to the customer becomes the
focus in current financial circle. Traditional ATM systems
authenticate generally by using the credit card and the
password, the method has some defects. Using credit card
and password can not verify the client's identity exactly. In
recent years, the algorithm that the fingerprint recognition
continuously updated, which has offered new verification
means for us.
Software design
The design of software is very important for this
embedded system. The design was component of three parts
included the design of main program flow chart, the
initializing ones, and the algorithm of fingerprint recognition
flow chart.
This system of software is implemented by the steps as
follows: first of all, the Linux kernel and the File system are
loaded into the main chip. The next, the system is initialized
to implement specific task, such as checking A TM system,
GSM communication and so on, and then each module reset
for ready to run commands.
Before using A TM terminal, the password and
fingerprint is required. First need to enter owner's password,
if password is successful then the system is required the
owner's fingerprint. If all the recognition is right, the system
would enter into the waiting status.
The design offingerprint image enhancement
Fingerprint recognition module is an extremely important
part of the system, the high-quality images was the major
factors of influencing the performance in the system. There
is a lot of noise in fingerprint image, the image enhancement
was the precondition for recognition of fingerprint
characteristics. The algorithm of fingerprint recognition
based on the algorithm of Gabor and direction filter was
used. fingerprint enhancement algorithm based on Gabor
filter could be better to remove noise, strengthen the
definition between the ridge and valley
CONCLUSIONS
The design of ATM tenninal system based on fingerprint
recognition took advantages of the stability and reliability of
fingerprint characteristics, a new biological technology based
on the image enhancement algorithm of Gabor and direction
filter. Additional, the system also contains the original
verifying methods which was inputting owner's password.
The security features were enhanced largely for the stability
and reliability of owner recognition. The whole system was
build on the technology of embedded system which makes
the system more safe, reliable and easy to use.