Fingerprint Sensor Project
Active In SP
Joined: Oct 2009
18-10-2009, 09:11 AM
SO, here we are graduation time and we need to get our FYP complete just in time..
well, here's my idea i'd like to use fingerprint technology to give access to a car instead having the need to use a key.
the layout of the system would consist of;
LCD display/touch screen - used to program the fingerprint sensor; scan a new fingerprint, delete an old fingerprint, add another fingerprint to memory. so the the screen will have these options and you just touch it to choose it.
Fingerprint sensor - will be used to scan, or test the fingerprint.
now, what i'm currently trying to figure out is which microprocessor to use...
should i use a PIC but would it have enough RAM/ROM for the process of storing the fingerprint/s aswell as the intializations, aswell as the lcd and touch screen set up..
or should i use ARM, now i havent learned much ARM in school so alot of outside research would be needed for that. Also the fingerprint sensor would be connect via SPI, and i'm not 100% sure how i will go about connecting the LCD display/touch screen..maybe USB...
any suggestions would be appreciated,
so, this is the LCD display i was thinking of getting...any one that may have worked with this.. can i get some input?
Joined: Apr 2012
20-04-2012, 02:27 PM
Fingerprint Sensing.ppt (Size: 1.69 MB / Downloads: 69)
First used in China in 700 AD
Proposed in Europe in 1858, implemented in Germany in 1903.
Unique – So far no two prints from different fingers have been found that are identical
Capture Fingerprint image
Process image and extract features
Store data for comparison or compare with stored templates
Types of Fingerprint Sensors
Finger lies on a prism. Total internal reflection produces image of fingerprint on a camera chip
Optic Transmissive with Fiber Optic Plate
Light source illuminates through the finger
Finger lies on fiber-optic plate that transmits image data to camera chip
Pixel array measures the light reflected by the finger
Charge amp reset. Inverter O/P settles to threshold
Ref. charge applied to I/P
O/P Voltage proportional to feedback capacitance
Inverter O/P = upper saturation level if there is no feedback capacitance
Inverter O/P = close to logical threshold when feedback capacitance is large
Secure logins via keyboard modules
User identification at kiosks
Biometric door locks
Credit card security
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