Biometric Security System
Capstone Project CDR
Mat Merkow
Tung Nguyen
Dipesh Shakya
Project Description
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Interface for secure wireless communication
Capable of connecting many sensors and devices
secure data transmission and remote device operation
Our implementation is a wireless security device giving access to
remote devices
• personally identifiable information will ever leave clients possession
Goals in Order of Importance
1. Finish boards and have secure
communication between them
a. Serial communication
b. LCD
c. Keypad
2. Bluetooth communication
3. Operation Controlled Device
4. Fingerprint/Pulse Oximeter Authentication
a. Software
System Overview
Primary Device
Clients
Interface?
Authentication
module
Interface?
HC11
Communication
module
Wireless communication
LCD
16x4
CPLD
Communication
module
Secondary Device
Controlled Device
(light, door, etc.)
Secondary
Module
Internal Communications
Data and Addr Bus
EPROM or
Memory
FingerPrint
Oximeter
Bluetooth
Serial Interfaces
Parallel Interface
LCD
16x4
Power
Switch
Data Bus
6 higher order addr
CPLD
Chip Select
To EPROM /
Memory
To PC 16552
To LCD
2xPC16552
4 Address Bit
HC11
Bus Drivers
Micro controller
Latch
FLASH EPROM
RAM (8Kx8 bits)
CPLD
• Chip Select
• Interrupt handler
• Some behavior logic
Finger Chip Module
AT77SM0101BCB02VKE
• Standalone device
with build-in CPU
Hardware Schematic
Pulse Oximeter
• 34 mm by 24mm
• Low power 29mW
• RS-232 communication
• Demonstration Software
• All Cables
• One free sensor
• Cost: $300.00 + shipping
Pulse Oximeter Data Format
BlueTooth Communication
User Interface
Communication Module
BlueTooth Tx/Rx
TDK BISM
• TDK Bluetooth Intelligence Serial Module
Wireless Medium
BlueTooth Tx/Rx
Secondary Module
Controlled Devices
• Stand alone module with integral antenna.
• Frequency: 2.4 - 2.485 GHz.
• Range: upto 100 meters.
• Physical size: 84 x 69 x 5 mm.
• Data transfer rate: upto 200 kbps.
• Cost $106
LCD INTERFACE
Features:
• 16 Characters x 4 Lines.
• 5 x 7 Dot Matrix Character + Cursor.
• Built in LCD Controller/driver,
equivalent to HD44780.
• LED Backlight version.
• Size : 87 x 60 x 13.5 mm.
• Display Area: 61.8 x 25.2 mm.
• Power Supply Voltage: 2.7V – 6.5 V.
• Power Supply Current: 0.5 – 1 mA
• LED Supply Voltage: 4.6 – 5 V
• LED Supply Current: 200 – 400 mA
• Cost: $30.04 + shipping.
ACM1604C
Progress
• Wire-Wrap board has been completed and
tested through EPROM, NOP loop runs
our system.
• Schematics have been created for HC11,
Memory, and CPLD.
• Vender for Pulse Oximeter has been
researched and selected.
Time Chart
Contingency Plans
• Unable to get Fingerprint module working
– Use keypad for authentication
• Unable to get Bluetooth working
– Use wires to connect the devices
• Unable to get PCB boards working
– Build a second wire-wrap board
Questions ?
BioSec Team
Mat Merkow
Tung Nguyen
Dipesh Shakya
Thank You !
BioSec Team
Mat Merkow
Tung Nguyen
Dipesh Shakya