Project Head Case(Eye Pattern Detection)

Designed by

Group H

Dan Klowden, Jon Burns

Presented byRebekah Henkel, Anita Phillips, and Anh Ton

TOP SCHEMATIC

Eye_SIG

Contains:

• EYEFRM

• SIG_CTRL

EYEFRM

Functional: determines whether or not the eye is closed.

SIG_CTRL

Functional: determines if the eye has been closed for 2 sec.

Includes 5 states: Counting, EyeCWait, DoneCnt, ACKwait, and FRMwait

EYECLOSED

SIG_CTRL (Cont.)

Counting

Compare With CALIB and Return

EyeCWait

DoneCnt

ACKwait

FRMwait

CameraFrame Asserted and Count < 40

Less Than 38 / 40 EyeClosed Signals Asserted

CameraFrame Asserted

CameraFrames = 40

ACK Signal From 8051 CameraFrame Asserted

ACK Signal From 8051 & CameraFrame Not Asserted

At least 38 / 40 EyeClosed Signals Asserted

Suggestion- Add extra pins to choose which control states to switch to. (cyclic order for now)

| | | time

2sec

- After eye is closed for 2 sec, require that the eye to open before starting counting again.

Questions?