Project Description • 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 Importance1. Finish boards and have secure
communication between thema. Serial communication
b. LCD
c. Keypad
2. Bluetooth communication
3. Operation Controlled Device
4. Fingerprint/Pulse Oximeter Authenticationa. Software
System Overview
Clients Interface?Authentication
module
Interface?
HC11LCD16x4
Communication module
SecondaryModule
Communication module
Wire
less
com
mun
icat
ion
Controlled Device(light, door, etc.)
Primary Device
Secondary Device
CPLD
Internal Communications
CPLD
LCD16x4
EPROM or Memory
FingerPrintOximeterBluetooth
Pa
ralle
l In
terf
a ce
Data Bus
Se
ria
l In
terf
ace
s
HC11 Data and Addr Bus
2xPC16552
6 higher order addr Chip Select
To EPROM / Memory
To PC 16552To LCD
4 A
dd
ress
Bit
Power Switch
Pulse Oximeter
• 34 mm by 24mm• Low power 29mW• RS-232 communication
• Demonstration Software• All Cables• One free sensor
• Cost: $300.00 + shipping
User Interface
Communication Module
BlueTooth Tx/Rx
Wireless Medium
BlueTooth Tx/Rx
Secondary Module
Controlled Devices
BlueTooth Communication
• TDK Bluetooth Intelligence Serial Module• 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
TDK BISM
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.
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