1. DoorModule and Badge 8051 RF RF XS40 FPGA 8051 XS40 (sonar) AUTH ECHO
RS232 RF
BADGEID
FPGA
8051
RS232
REQUEST
BUSY
8051
EX1
EX0
XS40
ECHO
INIT
(sonar)
AUTH

2. State Diagram of DoorModule
Detected user in a range of
6 inches to 3 feet within 0.5 second
Detecting User
Done Checking
Time out in
ID request
Requesting ID
Checking ID
Timeout = worst case: 8 * 0.32s
ID received

3. Detecting User: SonarTask
start
SEND_INIT
INIT = 1
DONE
RF_TASK
And
FPGA_TASK
WAIT_ECHO
distance++
ECHO
distance > MAX
RESET
INIT = 0
distance = 0
Time = 0.2 second/cycle
0.1ms counter => Error: +/- 0.1 ms = ft

4. Same for Both the DoorModule and the Badge:
RF Hardware
Same for Both the DoorModule and the Badge:
Virtual Wire Dev. Kit
8051
Protocol Board
RS 232
Data Board
To be deleted later!
Packet, ack, and retransmit
Sends byte

5. Protocol Board requires: Protocol Board requires:
RF Message Formats
Request
DoorModule
Badge
Response + BadgeID
Protocol Board requires:
TO/FROM
Packet #
Packet Size
Data Bytes
OutBuffer:
Request
DoorModule
InBuffer:
RESPONSE
BadgeID
Protocol Board requires:
TO/FROM
Packet #
Packet Size
Data Bytes
Request
InBuffer:
Badge
OutBuffer:
RESPONSE
BadgeID

6. Time Line 8051 (DoorModule) Sonar (DoorModule) Badge FPGA (DoorModule)
INIT
ECHO
Badge
Request
Time
Response + BadgeID
FPGA (DoorModule)
Request + BadgeID
Check BadgeID

7. Verifing User Reset 8 !Request WAIT_ID ROM (LUT) BadgeID Control BUSY
AUTH = 0
ROM
(LUT)
BadgeID
Control
BUSY
Request
Request
seconds == 4
Reset
!DB
AUTH
CHECK_ID
BUSY = 1
AUTH = 0
AUTHORIZE
BUSY = 1
AUTH = 1
Counter DB

8. Timing Diagram
CLK
BadgeID
REQUEST
BUSY
AUTH

9. Current Status Done: In progress:
Detect a user within 6 inches to 3 feet.
Detect a user within 0.5 second.
RF messaging protocol.
Built the badge.
In progress:
Debugging the badge.
Implementation and debugging of FPGA.

10. Summary Hand-free and preserve security checking.
Final technical design of the DoorModule and the Badge.
Sonar detects user intention.
RF exchanges user information.
FPGA does the checking.
Analysis/data/results show our design will meet the requirement.
Current schedule
Coming soon……
Product demo.
Hope you enjoy the presentation as much as we do. And, I am going to hand it off to our reviewer, group C. Thank you.