ECE 477 DESIGN REVIEW TEAM 5 MYATM

FALL 2012

Tung Lun Loo

Yu Chen Lim

Chuan Yean TanXue Yuan Wong

OUTLINE Project overview Project-specific success criteria Block diagram Component selection rationale Packaging design Schematic and theory of operation PCB layout Software design/development status Project completion timeline Questions / Discussion

PROJECT OVERVIEW

ATM is idle when vacant Occupancy sensor detects the presence of a user ATM authentication

Facial recognition 4 digit PIN

Update cash card Deposit Withdrawal

PROJECT-SPECIFIC SUCCESS CRITERIA1. An ability to use face recognition to verify the

identity of the user. 2. An ability to use touchpad for menu

navigation.3. An ability to sense the presence of a user in

front of ATM.4. An ability to read and update the value inside a

cash card via RFID.5. An ability to use keypad to input numbers for

PIN validation and transaction purposes.

BLOCK DIAGRAM

COMPONENT SELECTION RATIONALE

At least 3 timers to support RFID (Manchester coding),

sample keypad push buttons, detect multiple pulses in

occupancy sensor

Has UART interface to communicate with Atom board

I/O pin requirements: keypads (7), PIR motion sensor

(1), RFID base station (3)

Microcontroller

PIC18F24J11 AT90PWM2B

28 pins 24 pins

Three 16-bits timers Three 8-bits timers

Supports UART Support UART

PIC18F24J11 VS AT90PWM2B

COMPUTATION DEVICE RATIONALE

Run responsive GUI on the monitor Detect user’s input from touchpad Communicate with microcontroller via COM port

(RS232) Capture images frames using webcams Process the images using face recognition

algorithm Upload the user’s account data to the server

Intel Atom N270 BeagleBoard-xM

Atom Processor 1.6 GHz ARM Cortex A8 1 GHz

512MB RAM 512MB RAM

3 USB Ports 4 USB Ports

VGA, RS232 DVI, RS232

INTEL N270 VS BEAGLEBOARD-XM

PACKAGING DESIGN

MICROCONTROLLER

KEYPAD + SENSOR

RFID CIRCUIT

CONNECTORS / HEADERS

POWER SUPPLY

PCB LAYOUT

Noise from RFID circuit

Antenna placed at the edge

Separation of digital and analog signals

Place RFID away from power supply

4.7 in × 3.1 in

Microcontroller

Power Supply

UART

RFID

Level Translator

Decoupling capacitors

40 miltrace width

Analog Ground

Digital Ground

16 mil trace width

Decoupling capacitors

40 mil traces for power and ground

Decoupling capacitors

Antenna

Antenna ground

Digital ground

SOFTWARE DESIGN/DEVELOPMENT STATUSMicrocontroller

Flag driven Occupancy sensor Keypad scanning RFID read UART read

Developed functionsRFID writeUART read and write

SOFTWARE DESIGN/DEVELOPMENT STATUS OS - Linux Mint 14 Face Recognition - OpenBR Library Graphical User Interface

QT Creator C++

Database set up on a server MySQL

Atom Board will fetch/insert data from/to the database through LAN

PROJECT COMPLETION TIMELINE

Complete RFID testing

Week 8

Full prototype testing

Week 9

Populate PCB

Week 11

Finalize microcontroller code

Week 12

Finalize server testing & software development

Week 13

Finalize packaging

Week 14

Perform complete test

Week 15

QUESTIONS / DISCUSSION